Identification_Information:
  Citation:
    Citation_Information:
      Originator: 
        National Oceanic and Atmospheric Administration, Tropical Prediction 
        Center/National Hurricane Center
      Publication_Date: 200509
      Title: 
        Historical North Atlantic Tropical Cyclone Tracks, 1851-2004 
      Publication_Information:
        Publication_Place: Reston, VA
        Publisher: National Atlas of the United States
      Online_Linkage: <http://nationalatlas.gov/atlasftp.html>

  Description: 
    Abstract: 
      This Historical North Atlantic Tropical Cyclone Tracks file contains 
      the six-hourly (0000, 0600, 1200, 1800 UTC) center locations and 
      intensities for all northern Atlantic subtropical depressions and 
      storms, extratropical storms, tropical lows, waves, disturbances, 
      depressions and storms, and all hurricanes, from 1851 through 2004.  
      Included are storms in the Caribbean Sea and the Gulf of Mexico.  
      This is a replacement for the January 2005 map layer distributed as 
      Historical North Atlantic Tropical Cyclone Tracks, 1851-2003.
    Purpose:
      These data are intended for geographic display and analysis at the 
      national level, and for large regional areas.  The data should be 
      displayed and analyzed at scales appropriate for 1:2,000,000-scale 
      data.  No responsibility is assumed by the National Oceanic and 
      Atmospheric Administration or the National Atlas of the United States 
      in the use of these data. 
    Supplemental_Information: 
      An ASCII format version of the Historical Atlantic Tropical Cyclone 
      Tracks file is available at 
      <http://www.nhc.noaa.gov/tracks1851to2004_atl.txt>.

      For more information on the Saffir-Simpson Hurricane Scale, please see 
      <http://www.nhc.noaa.gov/aboutsshs.shtml>.

      For more information on tropical cyclone advisories, please see 
      <http://www.nhc.noaa.gov/HAW2/english/forecast/forecast_products.shtml>.

      General information on subtropical and tropical cyclones is available 
      from the National Oceanic and Atmospheric Administration, Atlantic 
      Oceanographic and Meteorological Laboratory, Hurricane Research 
      Division FAQ page at 
      <http://www.aoml.noaa.gov/hrd/tcfaq/tcfaqHED.html>, and from the 
      National Hurricane Center Hurricane Basics page at 
      <http://www.nhc.noaa.gov/HAW2/english/basics.shtml>.

  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 18510625
        Ending_Date: 20041205
    Currentness_Reference: Ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: Annually
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -109.3
      East_Bounding_Coordinate: 13.5
      North_Bounding_Coordinate: 70.7
      South_Bounding_Coordinate: 7.2
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: Climatology/Meteorology/Atmosphere
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Hurricanes
      Theme_Keyword: Historical hurricanes
      Theme_Keyword: Hurricane tracks
      Theme_Keyword: Historical hurricane tracks
      Theme_Keyword: Tropical storms
      Theme_Keyword: Subtropical storms
      Theme_Keyword: Subtropical depressions
      Theme_Keyword: Tropical depressions
      Theme_Keyword: Tropical disturbances
      Theme_Keyword: Tropical waves
      Theme_Keyword: Tropical lows
      Theme_Keyword: Extratropical storms
      Theme_Keyword: Major hurricanes
      Theme_Keyword: Intense hurricanes
      Theme_Keyword: Tropical storm tracks
      Theme_Keyword: Historical tropical cyclone tracks
      Theme_Keyword: Tropical cyclones
      Theme_Keyword: Subtropical cyclones
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: United States
      Place_Keyword: Atlantic
      Place_Keyword: North Atlantic Basin
      Place_Keyword: Gulf of Mexico
      Place_Keyword: Caribbean Sea
      Place_Keyword: Alabama
      Place_Keyword: Alaska
      Place_Keyword: Arizona
      Place_Keyword: Arkansas
      Place_Keyword: California
      Place_Keyword: Colorado
      Place_Keyword: Connecticut
      Place_Keyword: Delaware
      Place_Keyword: District of Columbia
      Place_Keyword: Florida
      Place_Keyword: Georgia
      Place_Keyword: Hawaii
      Place_Keyword: Idaho
      Place_Keyword: Illinois
      Place_Keyword: Indiana
      Place_Keyword: Iowa
      Place_Keyword: Kansas
      Place_Keyword: Kentucky
      Place_Keyword: Louisiana
      Place_Keyword: Maine
      Place_Keyword: Maryland
      Place_Keyword: Massachusetts
      Place_Keyword: Michigan
      Place_Keyword: Minnesota
      Place_Keyword: Mississippi
      Place_Keyword: Missouri
      Place_Keyword: Montana
      Place_Keyword: Nebraska
      Place_Keyword: Nevada
      Place_Keyword: New Hampshire
      Place_Keyword: New Jersey
      Place_Keyword: New Mexico
      Place_Keyword: New York
      Place_Keyword: North Carolina
      Place_Keyword: North Dakota
      Place_Keyword: Ohio
      Place_Keyword: Oklahoma
      Place_Keyword: Oregon
      Place_Keyword: Pennsylvania
      Place_Keyword: Rhode Island
      Place_Keyword: South Carolina
      Place_Keyword: South Dakota
      Place_Keyword: Tennessee
      Place_Keyword: Texas
      Place_Keyword: Utah
      Place_Keyword: Vermont
      Place_Keyword: Virginia
      Place_Keyword: Washington
      Place_Keyword: West Virginia
      Place_Keyword: Wisconsin
      Place_Keyword: Wyoming
      Place_Keyword: Puerto Rico
      Place_Keyword: U.S. Virgin Islands

  Access_Constraints: None
  Use_Constraints:
    None.  Acknowledgement of the National Oceanic and Atmospheric 
    Administration, Tropical Prediction Center/National Hurricane Center, the 
    NOAA Coastal Services Center and (or) the National Atlas of the United 
    States of America would be appreciated in products derived from these 
    data. 
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: NOAA Coastal Services Center
      Contact_Position: Clearinghouse Manager 
      Contact_Address:
        Address_Type: Mailing and physical address
        Address: 2234 South Hobson Avenue
        City: Charleston
        State_or_Province: SC
        Postal_Code: 29405-2413
        Country: USA
      Contact_Voice_Telephone: 843-740-1200
      Contact_Facsimile_Telephone: 843-740-1315
      Contact_Electronic_Mail_Address: clearinghouse@csc.noaa.gov
      Hours_of_Service: Monday - Friday 8:00 AM - 5:00 PM Eastern Time
  Native_Data_Set_Environment: Formatted ASCII text file
  Cross_Reference:
    Citation_Information:
      Originator:
        National Oceanic and Atmospheric Administration, Tropical 
        Prediction Center/National Hurricane Center
      Publication_Date: 200509
      Title: 
        Historical North Atlantic Hurricane Tracks - Major Storms with 
        Landfall in the United States, 1851-2004
      Publication_Information:
        Publication_Place: Reston, VA
        Publisher: National Atlas of the United States
      Online_Linkage: <http://nationalatlas.gov/atlasftp.html>
  Cross_Reference:
    Citation_Information:
      Originator:
        National Oceanic and Atmospheric Administration, Tropical 
        Prediction Center/National Hurricane Center
      Publication_Date: 200509
      Title: 
        Historical Eastern North Pacific Tropical Cyclone Tracks, 1949-2004 
      Publication_Information:
        Publication_Place: Reston, VA
        Publisher: National Atlas of the United States
      Online_Linkage: <http://nationalatlas.gov/atlasftp.html>

Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: 
      Specific accuracy information can be found in Neumann, C.J., B.R. 
      Jarvinen, C.J. McAdie and G.R. Hammer, 1999: Tropical Cyclones of 
      the North Atlantic Ocean, 1871-1999 (fifth revision).  NCDC/NHC 
      Historical Climatology Series 6-2, pp.11-14.  Similar standards 
      and techniques were applied to the post-1999 data.
  Logical_Consistency_Report:
    Over-water portions of storm tracks before 1944 are subject to 
    considerable uncertainties.  Aircraft reconnaissance of storms near 
    critical areas was introduced in 1944, and continuous weather 
    satellite surveillance was introduced in the mid-1960s.  These two 
    developments mean that more recent storm records have a higher 
    degree of accuracy than those prior to 1944.  No tests for logical 
    consistency have been performed on this map layer.
  Completeness_Report: 
    This map layer includes all known Atlantic Basin (Gulf of Mexico, 
    Caribbean Sea, and North Atlantic Ocean) tropical cyclones between 
    1851 and 2004.  The term tropical cyclone as used here refers to 
    subtropical depressions and storms, tropical depressions and 
    storms, and all categories of hurricanes from Category 1 to 
    Category 5.  This map layer also includes hybrid systems such as 
    tropical lows, waves, and disturbances, as well as extratropical 
    storms. 
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: 
        Over-water portions of storm tracks before 1944 are subject to 
        considerable uncertainties.  Aircraft reconnaissance of storms 
        near critical areas was introduced in 1944, and continuous 
        weather satellite surveillance was introduced in the mid-1960s.  
        These two developments allow a high degree of probability that 
        more recent storm center locations were determined with a 
        reasonable degree of accuracy.

  Lineage:
    Source_Information: 
      Source_Citation: 
        Citation_Information: 
          Originator: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center 
          Publication_Date: 200503 
          Title: Atlantic Tracks File 1851-2004
          Edition: 2004
          Geospatial_Data_Presentation_Form: Map 
          Publication_Information: 
            Publication_Place: Miami, FL 
            Publisher: NOAA National Hurricane Center 
          Online_Linkage: <http://www.nhc.noaa.gov/pastall.shtml> 
      Type_of_Source_Media: Online 
      Source_Time_Period_of_Content: 
        Time_Period_Information: 
          Range_of_Dates/Times: 
            Beginning_Date: 1851 
            Ending_Date: 2004 
        Source_Currentness_Reference: Ground condition 
      Source_Citation_Abbreviation: ATL_2004
      Source_Contribution: Spatial and attribute information. 

    Process_Step:
      Process_Description: 
        Historical track information was downloaded from the National 
        Hurricane Center's Web site.  The ASCII text file was formatted 
        into an Arc/INFO table using AML.  The INFO table was then processed 
        into a generate file and an attribute table that were converted into 
        an attributed cover.  

        Location points are recorded every 6 hours.  Each recorded point was 
        associated with a unique line that extends from that point to the 
        next recorded point.  Small line segments, approximately 0.0001 
        degree long, were added to the end of each storm track to retain the 
        final collection point's information.  In the source data, tracks 
        that crossed the 0-degree longitude line had negative longitude 
        values even in the eastern hemisphere.  These longitude values were 
        converted to the corresponding positive longitude values.

        A limit in the processing software will not allow duplicate points, 
        so where a storm stood still longer than the six-hour collection 
        interval, the next location point was offset approximately 0.0001 
        degrees to retain relevant information.  

        The cover was converted into a shapefile and an SDTS-formatted file.
      Source_Used_Citation_Abbreviation: ATL_2004
      Process_Date: 200508

Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: String
      Point_and_Vector_Object_Count: 37706

Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution: 0.1
      Longitude_Resolution: 0.1
      Geographic_Coordinate_Units: Decimal degrees
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: GRS1980
      Semi-major_Axis: 6378137.0
      Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: 
        Subtropical and tropical cyclone tracks (described by huralll020.dbf)
      Entity_Type_Definition: 
        The path followed by the center of a subtropical or tropical cyclone 
        or related storm.  A subtropical cyclone is a low pressure system 
        that develops over subtropical waters and that initially has a non-
        tropical circulation but in which some elements of tropical cyclone 
        cloud structure are present.  Subtropical cyclones can evolve into 
        tropical cyclones.  A tropical cyclone is a warm-core, non-frontal 
        low-pressure system that develops over tropical or subtropical 
        waters, covering a large region and with organized convection (i.e. 
        thunderstorm activity) and definite cyclonic (counter-clockwise 
        circular) surface wind circulation.  Related storms are those that 
        develop into subtropical or tropical cyclones or develop from them, 
        such as tropical disturbances, lows, waves, and extratropical storms. 
      Entity_Type_Definition_Source: 
        National Oceanic and Atmospheric Administration, Tropical Prediction 
        Center/National Hurricane Center
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: National Atlas of the United States 
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: PolyLine
          Enumerated_Domain_Value_Definition: 
            1-dimensional element that may or may not surround a 2-
            dimensional element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Fnode#
      Attribute_Definition: Internal sequence number of the from-node.
      Attribute_Definition_Source: National Atlas of the United States
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Tnode#
      Attribute_Definition: Internal sequence number of the to-node.
      Attribute_Definition_Source: National Atlas of the United States
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Lpoly#
      Attribute_Definition: Internal sequence number of the left polygon.
      Attribute_Definition_Source: National Atlas of the United States
      Attribute_Domain_Values: 
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Rpoly#
      Attribute_Definition: Internal sequence number of the right polygon.
      Attribute_Definition_Source: National Atlas of the United States
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Length
      Attribute_Definition: 
        The length of the line in coverage units.  In the distributed file, 
        coverage units represent decimal degrees.
      Attribute_Definition_Source: National Atlas of the United States
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.000
          Range_Domain_Maximum: 11.180
    Attribute:
      Attribute_Label: Huralll020
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: National Atlas of the United States
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 37706
    Attribute:
      Attribute_Label: Year
      Attribute_Definition: 
        The year of the storm advisory, in the format yyyy.  Advisories are 
        issued for storms that have attained at least tropical depression 
        status, and are issued every six hours, at 0000, 0600, 1200, and 1800 
        hours.  Tropical Prediction Center/National Hurricane Center 
        advisories are discontinued once a storm makes landfall and all storm 
        warnings are dropped, or when the wind speed drops below 30 knots or 
        35 mph.  The records for each date are listed in order. 
      Attribute_Definition_Source: 
        National Oceanic and Atmospheric Administration, Tropical Prediction 
        Center/National Hurricane Center 
      Attribute_Domain_Values: 
        Range_Domain: 
          Range_Domain_Minimum: 1851 
          Range_Domain_Maximum: 2004
    Attribute: 
      Attribute_Label: Month
      Attribute_Definition: 
        The month of the storm advisory.  Advisories are issued for storms 
        that have attained at least tropical depression status, and are 
        issued every six hours, at 0000, 0600, 1200, and 1800 hours.  
        Tropical Prediction Center/National Hurricane Center advisories are 
        discontinued once a storm makes landfall and all storm warnings are 
        dropped, or when the wind speed drops below 30 knots or 35 mph.  The 
        records for each date are listed in order. 
      Attribute_Definition_Source: 
        National Oceanic and Atmospheric Administration, Tropical Prediction 
        Center/National Hurricane Center 
      Attribute_Domain_Values: 
        Range_Domain: 
          Range_Domain_Minimum: 1 
          Range_Domain_Maximum: 12 
    Attribute: 
      Attribute_Label: Day 
      Attribute_Definition: 
        The day of the storm advisory.  Advisories are issued for storms that 
        have attained at least tropical depression status, and are issued 
        every six hours, at 0000, 0600, 1200, and 1800 hours.  Tropical 
        Prediction Center/National Hurricane Center advisories are 
        discontinued once a storm makes landfall and all storm warnings are 
        dropped, or when the wind speed drops below 30 knots or 35 mph.  The 
        records for each date are listed in order. 
      Attribute_Definition_Source: 
        National Oceanic and Atmospheric Administration, Tropical Prediction 
        Center/National Hurricane Center 
      Attribute_Domain_Values: 
        Range_Domain: 
          Range_Domain_Minimum: 1 
          Range_Domain_Maximum: 31
    Attribute:
      Attribute_Label: Btid
      Attribute_Definition: 
        The unique event identifier.  Identifiers are sequential, starting 
        with 1 in June, 1851 and ending with 1325 in December, 2004.
      Attribute_Definition_Source: 
        National Oceanic and Atmospheric Administration, Tropical Prediction 
        Center/National Hurricane Center
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 1325
    Attribute:
      Attribute_Label: Name
      Attribute_Definition: 
        The given name of a storm.  Storms are named if they are true 
        tropical storms and attain a sustained wind speed of at least 39 mph.
      Attribute_Definition_Source:
        National Oceanic and Atmospheric Administration, Tropical Prediction 
        Center/National Hurricane Center
      Attribute_Domain_Values:
        Codeset_Domain:
          Codeset_Name: World-Wide Tropical Cyclone Names
          Codeset_Source: World Meteorological Organization
      Attribute_Domain_Values:
        Enumerated_Domain:

          Enumerated_Domain_Value: NOT NAMED
          Enumerated_Domain_Value_Definition: 
            There is no given name for the storm.  Prior to 1950 storms were 
            not named.  Later storms that were not recognized as tropical 
            storms or hurricanes at the time of their occurrence are also not 
            named.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: SUBTROP
          Enumerated_Domain_Value_Definition: 
            There is no given name for the storm because it was classified as 
            a subtropical depression or subtropical storm. 
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: SUBTROP1
          Enumerated_Domain_Value_Definition: 
            There is no given name for the storm because it was classified as 
            a subtropical depression or subtropical storm.  Subtrop1 is the 
            first subtropical cyclone for a given year.  A storm may 
            initially be identified as Subtrop1 but then be given a name if 
            it develops into a tropical storm; in this case there will be no 
            storm identified as Subtrop1 for the year even though there may 
            be a storm identified as Subtrop2.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: SUBTROP2
          Enumerated_Domain_Value_Definition: 
            There is no given name for the storm because it was classified as 
            a subtropical depression or subtropical storm.  Subtrop2 is the 
            second subtropical cyclone for a given year.  A storm may 
            initially be identified as Subtrop2 but then be given a name if 
            it develops into a tropical storm; in this case there will be no 
            storm identified as Subtrop2 for the year even though there may 
            be a storm identified as Subtrop3.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: SUBTROP3
          Enumerated_Domain_Value_Definition: 
            There is no given name for the storm because it was classified as 
            a subtropical depression or subtropical storm.  Subtrop3 is the 
            third subtropical cyclone for a given year.  A storm may 
            initially be identified as Subtrop3 but then be given a name if 
            it develops into a tropical storm; in this case there will be no 
            storm identified as Subtrop3 for the year even though there may 
            be a storm identified as Subtrop4.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: SUBTROP4
          Enumerated_Domain_Value_Definition: 
            There is no given name for the storm because it was classified as 
            a subtropical depression or subtropical storm.  Subtrop4 is the 
            fourth subtropical cyclone for a given year.  A storm may 
            initially be identified as Subtrop4 but then be given a name if 
            it develops into a tropical storm; in this case there will be no 
            storm identified as Subtrop4 for the year.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
    Attribute:
      Attribute_Label: Category
      Attribute_Definition: 
        The intensity classification of the storm.  Hurricanes are classified 
        according to the Saffir-Simpson Hurricane Scale.
      Attribute_Definition_Source: 
        National Oceanic and Atmospheric Administration, Tropical Prediction 
        Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: D
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a tropical disturbance at the time of 
            the advisory.  A tropical disturbance is a discrete tropical 
            weather system of apparently organized convection (i.e. 
            thunderstorm activity), which is generally 100 to 300 nautical 
            miles in diameter.  It originates in the tropics or subtropics, 
            has a nonfrontal migratory character, and maintains its identity 
            for 24 hours or more.  It does not necessarily exhibit 
            circulation, but may develop into a tropical cyclone.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: E
          Enumerated_Domain_Value_Definition: 
            The storm was classified as Extratropical at the time of the 
            advisory.  Extratropical is a term used in advisories and 
            tropical summaries to indicate that a cyclone has lost its 
            tropical characteristics.  The term implies both that the cyclone 
            has moved out of the tropics and that the energy source driving 
            the storm has changed.  While tropical cyclones derive their 
            energy from the convection of warm, moist air, extratropical 
            storms derive their energy from the temperature contrast between 
            warm and cold air masses.  It is important to note that cyclones 
            can become extratropical and still retain winds of hurricane or 
            tropical storm force.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: H1
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a Category 1 hurricane at the time of 
            the advisory.  A Category 1 hurricane is a tropical cyclone with 
            maximum sustained surface (10 meter) winds of 64 knots/74 mph to 
            82 knots/95 mph, inclusive.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: H2
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a Category 2 hurricane at the time of 
            the advisory.  A Category 2 hurricane is a tropical cyclone with 
            maximum sustained surface (10 meter) winds of 83 knots/96 mph to 
            95 knots/110 mph, inclusive.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: H3
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a Category 3 hurricane at the time of 
            the advisory.  A Category 3 hurricane is a tropical cyclone with 
            maximum sustained surface (10 meter) winds of 96 knots/111 mph to 
            113 knots/130 mph, inclusive.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: H4
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a Category 4 hurricane at the time of 
            the advisory.  A Category 4 hurricane is a tropical cyclone with 
            maximum sustained surface (10 meter) winds of 114 knots/131 mph 
            to 135 knots/155 mph, inclusive.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: H5
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a Category 5 hurricane at the time of 
            the advisory.  A Category 5 hurricane is a tropical cyclone with 
            maximum sustained surface (10 meter) winds greater than 135 
            knots/155 mph.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: L
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a tropical low at the time of 
            the advisory.  A tropical low indicates low pressure at the 
            surface, but no other characteristics of a tropical cyclone are 
            present.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values: 
        Enumerated_Domain: 
          Enumerated_Domain_Value: SD 
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a subtropical depression at the time 
            of the advisory.  A subtropical depression is a subtropical 
            cyclone with maximum sustained surface (10 meter) winds of less 
            than 34 knots/39 mph. 
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/ National Hurricane Center 
      Attribute_Domain_Values: 
        Enumerated_Domain: 
          Enumerated_Domain_Value: SS 
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a subtropical storm at the time of 
            the advisory.  A subtropical storm is a subtropical cyclone with 
            maximum sustained surface (10 meter) winds of 34 knots/39 mph or 
            greater. 
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/ National Hurricane Center 
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: TD
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a tropical depression at the time of 
            the advisory.  A tropical depression is a tropical cyclone with 
            maximum sustained surface (10 meter) winds of less than 34 knots/
            39 mph.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: TS
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a tropical storm at the time of the 
            advisory.  A tropical storm is a tropical cyclone with maximum 
            sustained surface (10 meter) winds of 34 knots/39 mph to 64 
            knots/73 mph, inclusive.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: W
          Enumerated_Domain_Value_Definition: 
            The storm was classified as a tropical wave at the time of the 
            advisory.  Tropical waves occur in the trade-wind easterlies, 
            moving to the west with a wave-like motion.  They show a 
            detectable shift in wind direction, which  may not be detectable 
            at the surface but may be seen in the middle atmosphere.  A 
            tropical wave may develop into a tropical cyclone.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
    Attribute: 
      Attribute_Label: Long 
      Attribute_Definition: 
        The longitude of the starting point of the storm track segment, in 
        tenths of a degree.  Storm center positions are collected every six
        hours, and each storm center position is represented by a longitude-
        latitude coordinate pair.  When a storm stood still longer than the 
        six-hour collection interval, the next location point was offset 
        approximately 0.0001 degrees to retain relevant information.  Any 
        variation in longitude smaller than 0.1 degrees should be assumed to 
        be an introduced offset from the originally recorded point.
      Attribute_Definition_Source: National Atlas of the United States
      Attribute_Domain_Values: 
        Range_Domain: 
          Range_Domain_Minimum: -109.3000000
          Range_Domain_Maximum: 13.5000000
    Attribute: 
      Attribute_Label: Lat 
      Attribute_Definition: 
        The latitude of the starting point of the storm track segment, in 
        tenths of a degree.  Storm center positions are collected every six 
        hours, and each storm center position is represented by a longitude-
        latitude coordinate pair.  When a storm stood still longer than the 
        six-hour collection interval, the next location point was offset 
        approximately 0.0001 degrees to retain relevant information.  Any 
        variation in longitude smaller than 0.1 degrees should be assumed to 
        be an introduced offset from the originally recorded point.
      Attribute_Definition_Source: National Atlas of the United States
      Attribute_Domain_Values: 
        Range_Domain: 
          Range_Domain_Minimum: 7.2000000 
          Range_Domain_Maximum: 70.7000000 
    Attribute:
      Attribute_Label: Wind_kts
      Attribute_Definition: 
        The measured or estimated wind speed at the time of the advisory, in 
        whole knots.
      Attribute_Definition_Source: 
        National Oceanic and Atmospheric Administration, Tropical Prediction 
        Center/National Hurricane Center
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 10.0
          Range_Domain_Maximum: 165.0
    Attribute:
      Attribute_Label: Pressure
      Attribute_Definition: 
        The measured or estimated barometric pressure at the time of the 
        advisory, in millibars.
      Attribute_Definition_Source: 
        National Oceanic and Atmospheric Administration, Tropical Prediction 
        Center/National Hurricane Center
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: 
            The barometric pressure is unknown.
          Enumerated_Domain_Value_Definition_Source: 
            National Oceanic and Atmospheric Administration, Tropical 
            Prediction Center/National Hurricane Center
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 888
          Range_Domain_Maximum: 1024
    Attribute:
      Attribute_Label: Wind_mph
      Attribute_Definition: 
        The measured or estimated wind speed at the time of the advisory, 
        rounded to the nearest 5 miles per hour
      Attribute_Definition_Source: 
        National Oceanic and Atmospheric Administration, NOAA Coastal 
        Services Center 
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 10.0
          Range_Domain_Maximum: 190.0

Distribution_Information:
  Distributor:
    Contact_Information: 
      Contact_Organization_Primary: 
        Contact_Organization: 
          Earth Science Information Center, U.S. Geological Survey 
      Contact_Address:
        Address_Type: Mailing address 
        Address: 507 National Center 
        City: Reston 
        State_or_Province: VA 
        Postal_Code: 20192 
      Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747) 
      Contact_Voice_Telephone: 703-648-5920
      Contact_Instructions: 
        In addition to the address above there are other ESIC offices 
        throughout the country.  A full list of these offices is at
        <http://geography.usgs.gov/esic/esic_index.html>.
    
  Distribution_Liability: 
    Although these data have been processed successfully on a computer system 
    at the U.S. Geological Survey, no warranty expressed or implied is made 
    by the U.S. Geological Survey or the National Oceanic and Atmospheric 
    Administration regarding the utility of the data on any other system, nor 
    shall the act of distribution constitute any such warranty.  No 
    responsibility is assumed by the U.S. Geological Survey or the National 
    Oceanic and Atmospheric Administration in the use of these data. 
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ESRI Shapefile
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: <http://nationalatlas.gov/atlasftp.html>
    Digital_Form: 
      Digital_Transfer_Information: 
        Format_Name: SDTS 
      Digital_Transfer_Option: 
        Online_Option: 
          Computer_Contact_Information: 
            Network_Address: 
              Network_Resource_Name: <http://nationalatlas.gov/atlasftp.html>
    Fees:
      There is no charge for the map layer.

Metadata_Reference_Information:
  Metadata_Date: 20050912
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Peg Rawson
        Contact_Organization: National Atlas of the United States 
      Contact_Address:
        Address_Type: Mailing address
        Address: 12201 Sunrise Valley Dr
        Address: MS 561
        City: Reston
        State_or_Province: VA
        Postal_Code: 20192
      Contact_Voice_Telephone: 703-648-4183
      Contact_Electronic_Mail_Address: atlasmail@usgs.gov
  Metadata_Standard_Name: 
    FGDC Content Standards for Digital Geospatial Metadata 
  Metadata_Standard_Version: FGDC-STD-001-1998 
  Metadata_Security_Information: 
    Metadata_Security_Classification_System: None 
    Metadata_Security_Classification: Unclassified 
    Metadata_Security_Handling_Description: None 

