This Historical North Atlantic Tropical Cyclone Tracks file contains the 6-hourly (0000, 0600, 1200, 1800 UTC) center locations and intensities for all subtropical depressions and storms, extratropical storms, tropical lows, waves, disturbances, depressions and storms, and all hurricanes, from 1851 through 2005.
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 in the use of these data.
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publication date
THE DATA INCLUDED IN FGDL ARE 'AS IS' AND SHOULD NOT BE CONSTRUED AS LEGALLY BINDING. THE UNIVERSITY OF FLORIDA GEOPLAN CENTER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED AS A RESULT OF USING, MODIFYING, CONTRIBUTING OR DISTRIBUTING THE MATERIALS A note about data scale: Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data. 1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: http://geoplan.ufl.edu/education.html
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GeoPlan relied on the integrity of the attribute information within the original data.
An ASCII format version of the Historical Atlantic Tropical Cyclone Tracks file is available at <http://www.nhc.noaa.gov/pastall.shtml>. 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.
This data is provided 'as is'. GeoPlan relied on the integrity of the original data layer's topology
This data is provided 'as is' by GeoPlan and is complete to our knowledge.
This data is provided 'as is' and its horizontal positional accuracy has not been verified by GeoPlan
This data is provided 'as is' and its vertical positional accuracy has not been verified by GeoPlan
Spatial and Attribute Information
Historical track information was downloaded from the National Hurricane Center's Web site. The textual information was formatted using a PERL script written by the NOAA Coastal Services Center. The file was then brought into ArcGIS as a table and converted to a shapefile with attributes using a custom Visual Basic extension.
GeoPlan downloaded this dataset from the site "http://hurricane.csc.noaa.gov/hurricanes/download.html" and performed the following: -Projected to FGDL Albers HPGN. -Clipped to the State of Florida. -UPCASED attribute table. -Added fields 'DESCRIPT' and 'FGDLAQDATE'.
Internal feature number.
ESRI
Feature geometry.
ESRI
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 6 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.
NOAA
The month of the storm advisory. Advisories are issued for storms that have attained at least tropical depression status, and are issued every 6 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.
NOAA
The day of the storm advisory. Advisories are issued for storms that have attained at least tropical depression status, and are issued every 6 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.
NOAA
The storm advisory time. Times are in Zulu (a.k.a., Universal Time-UTC, Greenwich Mean Time-GMT) starting with 0000Z and ending with 1800Z.
NOAA
The unique event identifier. Identifiers are sequential, starting with 1 in June, 1851 and ending with 1320 in December, 2004.
NOAA
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.
NOAA
There is no given name for the storm. Prior to 1950 storms were not named.
There is no given name for the storm because it was classified as a subtropical depression or subtropical storm.
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.
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.
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.
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.
Storms from 1950 or later may be unnamed if they were not recognized as tropical storms or hurricanes at the time of their occurrence.
The latitude measurement of the storm's center, in tenths of decimal degrees.
NOAA
The longitude measurement of the storm's center, in tenths of decimal degrees.
NOAA
The measured or estimated windspeed at the time of the advisory, in whole knots.
NOAA
The measured or estimated barometric pressure at the time of the advisory, in millibars. A value of 0 indicates the barometric pressure is unknown.
NOAA
The intensity classification of the storm. Hurricanes are classified according to the Saffir-Simpson Hurricane Scale.
NOAA
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Oceanic basin where the storm occurred.
NOAA
Based on 'NAME' field.
GeoPlan
Date FGDL aquired the data from source.
GeoPlan
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