National Oceanic and Atmospheric Administration Coastal Services Center 20140902 vector digital data Asheville, NC National Oceanic and Atmospheric Administration Coastal Services Center North Atlantic https://www.ncdc.noaa.gov/ibtracs/index.php?name=ibtracs-data The International Best Track Archive for Climate Stewardship (IBTrACS) dataset was developed by the NOAA National Climatic Data Center, which took the initial step of synthesizing and merging best track data from all official Tropical Cyclone Warning Centers (TCWCs) and the WMO Regional Specialized Meteorological Centers (RSMCs) who are responsible for developing and archiving best track data worldwide. In recognizing the deficiency in global tropical cyclone data, and the lack of a publically available dataset, the IBTrACS dataset was produced, which, for the first time, combines existing best track data from over 10 international forecast centers. The dataset contains the position, maximum sustained winds, minimum central pressure, and storm nature for every tropical cyclone globally at 6- hr intervals in UTC. Statistics from the merge are also provided (such as number of centers tracking the storm, range in pressure, median wind speed, etc.). The dataset period is from 1848 to the present with dataset updates performed annually in August. The dataset is archived as netCDF files but can be accessed via a variety of user-friendly formats to facilitate data analysis, including netCDF, Shapefile, and CSV formatted files. The update to version 3 data includes new data sources, bug fixes, shapefile-support, discontinued support of ASCII and new variables. The major constraint in improving scientific understanding of the observed trends and variability of tropical cyclone activity has been a lack of accurate, quality controlled best track data for all tropical cyclone basins globally. 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>. 18510625 20131207 publication date Complete As needed -147.729778 50.860550 90.000000 -13.630566 None Major hurricanes Tropical disturbances Tropical cyclones Tropical depressions Tropical lows Extratropical storms Hurricane tracks Hurricanes Tropical storm tracks Intense hurricanes Historical hurricanes Historical tropical cyclone tracks Subtropical depressions Historical hurricane tracks Subtropical storms Tropical storms Tropical waves IBTrACS Subtropical cyclones None ClimatologyMeteorologyAtmosphere ISO 19115 Topic Categories climatologyMeteorologyAtmosphere None Ocean Equatorial Mid-Latitude Caribbean Sea North American Basin Tropics North Atlantic Ocean United States South Atlantic Ocean Gulf of Mexico Atlantic Ocean None Users must cite this dataset as: Kenneth R. Knapp, Scott Applequist, Howard J. Diamond, James P. Kossin, Michael Kruk, and Carl Schreck (2010). NCDC International Best Track Archive for Climate Stewardship (IBTrACS) Project, Version 3. [indicate subset used]. NOAA National Climatic Data Center. DOI:10.7289/V5NK3BZP [access date]. Publications using IBTrACS should also cite the following journal article: Knapp, K. R., M. C. Kruk, D. H. Levinson, H. J. Diamond, and C. J. Neumann, 2010: The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data. Bulletin of the American Meteor. Society, 91, 363- 376. doi:10.1175/2009BAMS2755.1 NCDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NCDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. NCDC can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCDC archives. National Climatic Data Center User Engagement and Services Branch mailing and physical

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Asheville NC 28801-5001 US +1 (828) 271-4800 +1 (828) 271-4876 ncdc.metadata@noaa.gov Monday - Friday 8:00 AM - 5:00 PM Eastern Time The following organizations provided best track data which are included in the IBTrACS data set: * Australian Bureau of Meteorology * Chinese Meteorological Agency Shanghai Typhoon Institute * Hong Kong Observatory * Joint Typhoon Warning Center * RSMC Honolulu, HI, USA (NOAA Central Pacific Hurricane Center) * RSMC La Reunion * RSMC Miami, FL, USA (NOAA Tropical Prediction Center) (HURDAT) * RSMC Nadi, Fiji * RSMC New Delhi, India * RSMC Tokyo, Japan * TCWC Wellington, New Zealand Also, special thanks to * the NCDC Climate Database Modernization Program (CDMP) for digitizing hardcopies of best track data. * Charlie Neumann, for making his Southern Hemisphere dataset available for this work. Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595 GeoPlan relied on the integrity of the attribute information within the original data. 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 data set. This data set includes all known Atlantic Basin (Gulf of Mexico, Caribbean Sea, and North Atlantic Ocean) tropical cyclones between 1851 and 2013. 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 dataset also includes hybrid systems such as tropical lows, waves, subtropical depressions and storms, as well as extratropical storms. 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. This data is provided 'as is' and its vertical positional accuracy has not been verified by GeoPlan National Oceanic and Atmospheric Administration Coastal Services Center 20140902 2013 map Asheville, NC National Oceanic and Atmospheric Administration Coastal Services Center https://www.ncdc.noaa.gov/ibtracs/index.php?name=ibtracs-data 0 onLine 18510101 20130101 ground condition NOAA Spatial and Attribute Information Data were obtained from numerous sources. Upon receipt of the electronic files, data were converted to common format (netCDF). Thereafter, numerous merging procedures were implemented, including an assessment of storm position, the identification of unique storms, and an accounting for a variety of storm tracks, storm splits, and storm mergers. An automated algorithm was developed to identify storms tracked by multiple centers by sorting storms in time and space. Any observations at identical times and within 111 kilometers, were identified as identical storms. Once a TC was identified as unique, a storm serial number was created which distinctively numbers the storm. IBTrACS algorithms read all the individual storm tracks from the merged files and create one combined storm track with a single position, wind and pressure every 6 hours (at 00, 06, 12 and 18UTC). Objective automated quality control algorithms were developed and incorporated for the maximum sustained wind and minimum central pressure for each tropical cyclone and time step. These data are in netCDF, with one file per cyclone. Statistics from the merge are also provided (such as number of centers tracking the storm, range in pressure, median wind speed, etc.). Any observations at identical times and within 111 kilometers (approx. 1 degree latitude) were identified as identical storms. In order to create a dataset that was globally homogeneous, the maximum winds are standardize to a single 10-minute averaging period as it is the global standard set by the World Meteorological Organization. NOAA 20131104 National Climatic Data Center IBTrACS Dataset POC mailing and physical

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Asheville NC 28801-5001 US +1 (828) 271-4339 +1 (828) 271-4328 IBTrACS.Manager@noaa.gov GeoPlan downloaded this data on June 4, 2015 from NOAA at the following link: https://www.ncdc.noaa.gov/ibtracs/index.php?name=ibtracs-data -File name changed from Basin.NA.ibtracs_all_lines.v03r06.shp to tropc_dec13.shp -All fields uppercased -Added DESCRIPT field based on NAME -Added FGDLAQDATE based on date data was acquired from source. GeoPlan 20150612 Vector String 45329 NAD 1983 HARN Florida GDL Albers 24.0 31.5 -84.0 24.0 400000.0 0.0 coordinate pair 0.0001 0.0001 meter D North American 1983 HARN GRS 1980 6378137.0 298.257222101 TROPC_DEC13 TROPC_DEC13.dbf GeoPlan OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. year Year of the observation NCDC month Month of the storm observation NCDC day Day of month of the observation NCDC hour Hour of the observation NCDC min Minute of the observation NCDC Name Name of the storm NCDC Serial_Num Storm serial number. NCDC Season Season the tropical cyclone began. NCDC Num Number identifier of the storm in this basin NCDC Basin Basin of the storm at the current time. Basins are: NI = North Indian WP = Western North Pacific EP - Eastern North Pacific NA = North Atlantic SI = South Indian SP = South Pacific SA = South Atlantic NCDC Sub_basin Ths sub basin of the storm at the present time. This isn't usually reported except near Australia. NCDC ISO_time The time of the current storm report in ISO units and relative to UTC (Universal Time Coordinate) which is also referred to as GMT (Greenwich Mean time). NCDC Nature Storm nature: TS - storm is tropical SS - Subtropical ET - Extratropical DS - Disturbance MX - Mix of conflicting reports NR - Not Reported MM - Missing NCDC Center Agency responsible for the warning intensity for wmo_wind and wmo_pres NCDC wmo_wind Maximum sustained wind speed as reported by the official World Meteorological Organzation (WMO) agency responsible for posting warnings on the storm. NCDC wmo_pres Minimum central pressure as reported by the official World Meteorological Organzation (WMO) agency responsible for posting warnings on the storm. NCDC wmo_wind__ No description available. GeoPlan wmo_pres__ No description available. GeoPlan Track_type Storm track type: main - Storm started as cyclogenesis and ended as cyclolysis merge - Storm started as cyclogenesis but merged with another storm split - Storm split from another storm and ended as cyclolysis other NCDC HDA_grade Storm type from the HURDAT North Atlantic dataset NOAA NHC HDA_wind Maximum Sustained wind from the HURDAT North Atlantic Dataset (NOAA NHC) NOAA NHC HDA_pres Minimum central pressure reported by NOAA NHC (in HURDAT Northern Atlantic) NOAA NHC TD9_grade Storm system type TD-9636 TD9_wind Maximum sustained wind TD-9636 TD9_pres Minimum central pressure TD-9636 REU_grade Storm system type RSMC La Reunion REU_wind Wind speed assigned by RSMC La Reunion (MeteoFrance) RSMC La Reunion (MeteoFrance) REU_pres Minimum central pressure RSMC La Reunion ATC_grade Storm system type ATCF ATC_wind Maximum wind speed recorded in the ATCF system (NOAA NHC) NOAA NHC ATC_pres Minimum central pressure ATCF DSS_grade Storm system type dss824 Australian basin file DSS_wind Maximum wind speed recorded in the dss824 dataset dss824 DSS_pres Minimum central pressure (recorded in the dss824 dataset dss824 DSI_grade Storm system type dss824 Indian Ocean file DSI_wind Maximum sustained winds recorded by dss824 dataset dss824 DSI_pres Minimum central pressure (recorded by dss824 dss824 BOM_grade Storm system type Australian BoM BOM_wind Maximum sustained wind Australian BoM BOM_pres Minimum central pressure from BoM Australian BoM DSA_grade Storm system type dss824 (Australian Basin) DSA_wind Maximum sustained wind dss824 Australian basin file DSA_pres Minimum central pressure recorded by dss824 Australian basin dss824 JTS_grade Storm system type JTWC Southern Hemisphere JTS_wind Wind speed assigned from JTWC (Southern Hemisphere) JTWC JTS_pres Minimum central pressure JTWC Southern Hemisphere basin file JTW_grade Storm system type JTWC (Western Pacific basin) JTW_wind Maximum sustained wind assigned by JTWC (Western Pacific) JTWC JTW_pres Minimum Central Pressure JTWC Western Pacific TD5_grade Storm system type TD9635 TD5_wind Maximum sustained wind TD-9635 dataset TD5_pres Minimum central pressure TD-9635 DSW_grade Storm system type dss824 dataset (Western Pacific) DSW_wind Maximum sustained wind dss824 Australian basin file DSW_pres Minimum central pressure dss824 Western Pacific file JTI_grade Storm system type JTWC Indian Ocean basin file JTI_wind Maximum Sustained Wind assigned by JTWC (North Indian Ocean) JTWC (North Indian Ocean) JTI_pres Minimum central pressure JTWC Indian Ocean basin file CMA_grade Storm System Type CMA CMA_wind Maximum sustained wind assigned by CMA CMA (Chinese Meteorological Administration) CMA_pres Minimum central pressure reported by CMA CMA HDE_grade Maximum sustained wind assigned by NOAA NHC (HURDAT Eastern Pacific) NOAA NHC HDE_wind Maximum sustained wind assigned by NOAA NHC (HURDAT Eastern Pacific) NOAA NHC HDE_pres Minimum central pressure HURDAT Eastern Pacific file JTE_grade Storm system type JTWC Eastern Pacific basin JTE_wind Maximum sustained wind as assigned by JTWC (Eastern Pacific) JTWC JTE_pres Minimum central pressure JTWC East Pacific basin file DSE_grade Storm type reported by dss824 dataset (East Pacific) dss824 DSE_wind Maximum sustained wind dss824 Eastern Pacific file DSE_pres Minimum central pressure dss824 Eastern Pacific basin file JTC_grade Storm system type JTWC Central Pacific basin file JTC_wind Maximum sustained wind assigned by JTWC (Central Pacific) JTWC JTC_pres Minimum central pressure reported by JTWC (Central Pacific basin) JTWC JMA_grade Storm system type JMA JMA_wind Maximum sustained wind JMA JMA_pres Minimum central pressure reported by JMA JMA NEU_grade Storm type reported in the Neumann Southern Hemisphere dataset Neumann dataset NEU_wind Maximum sustained wind speed Neumann dataset for the southern hemisphere NEU_pres Minimum central pressure Neumann dataset HKO_grade Storm System type HKO HKO_wind Maximum sustained wind assigned by HKO Hong Kong Observatory HKO_pres Minimum central pressure HKO CPH_grade Storm system type NOAA CPHC CPH_wind Maximum sustained wind from the CPHC NOAA Central Pacific Hurricane Center CPH_pres Minimum central pressure as reported by CPHC NOAA CPHC NZ_grade Storm type TCWC Wellington NZ_wind Maximum sustained wind assigned by TCWC Wellington TCWC Wellington NZ_pres Minimum central pressure (reported by TCWC Wellington) TCWC Wellington IMD_grade Storm system type IMD IMD_wind Maximum sustained wind assigned by IMD Indian Meteorological Department IMD_pres Minimum central pressure reported from the IMD IMD NAD_grade Storm system type RSMC Nadi (Fiji) NAD_wind Wind speed assigned by RSMC Nadi (Fiji) RSMC Nadi (Fiji) NAD_pres Minimum central pressure RSMC Nadi (Fiji) REU_rmw Radius of maximum winds RSMC La Reunion REU_wr1_ne First wind radii for North East quadrant RSMC La Reunion REU_wr1_se 1st wind radii for the south east quandrant RSMC La Reunion REU_wr1_sw 1st wind radii for south west quadrant RSMC La Reunion REU_wr1_nw First wind radii for north west quadrant RSMC La Reunion REU_wr2_ne Second wind radii for the north east quadrant RSMC La Reunion REU_wr2_se Second Wind radii for Southeast quadrant RSMC La Reunion REU_wr2_sw 2nd wind radii for south western quadrant RSMC La Reunion REU_wr2_nw 2nd wind radii for north west quadrant RSMC La Reunion BOM_hurrad Radius of hurricane force winds BoM BOM_galrad Radius of gale force winds (reported by Australian BoM) BoM BOM_eye Tropical cyclone eye size Australian BoM BOM_roci Radius of Outermost Closed Isobar Australian BoM ATC_rmw Radius of Maximum Winds ATCF ATC_poci Pressure of Outermost Closed Isobar ATCF ATC_roci Radius of outermost closed isobar NOAA NHC ATC_eye Eye size ATCF ATC_w34_r1 34 knot wind radii for quadrant 1 ATCF ATC_w34_r2 34 knot wind radii for quadrant 2 NOAA NHC (ATCF) ATC_w34_r3 34 knot wind radii for quadrant 3 reported in ATCF NOAA NHC ATC_w34_r4 34 knot radii for 4th quadrant ATCF ATC_w50_r1 50kt radius for quadrant 1 ATCF ATC_w50_r2 50 knot wind radii for quadrant 2 reported by ATCF NOAA NHC ATC_w50_r3 50 knot wind radii for quadrant 3 ATCF ATC_w50_r4 50 knot wind radii for quadrant 4 ATCF ATC_w64_r1 64 knot wind radii for quadrant 1 ATCF ATC_w64_r2 64 knot wind radii for quadrant 2 ATCF ATC_w64_r3 64 knot wind radii for quadrant 3 ATCF ATC_w64_r4 64 knot wind radii for quadrant 4 ATCF JMA_dir50 Direction of the longest radius of 50kt winds or greater JMA 1 Northeast (NE) JMA 2 East (E) JMA 3 Southeast (SE) JMA 4 South (S) JMA 5 Southwest (SW) JMA 6 West (W) JMA 7 Northwest (NW) JMA 8 North (N) JMA 9 (symmetric circle) JMA JMA_long50 longest radius of 50kt winds or greater JMA JMA_shrt50 Shortest radius of 50kt winds or greater JMA JMA_dir30 Direction of the longest radius of 30kt winds or greater JMA 1 Northeast (NE) JMA 2 East (E) JMA 3 Southeast (SE) JMA 4 South (S) JMA 5 Southwest (SW) JMA 6 West (W) JMA 7 Northwest (NW) JMA 8 North (N) JMA 9 (symmetric circle) JMA JMA_long30 longest radius of 30kt winds or greater JMA JMA_shrt30 shortest radius of 30kt winds or greater JMA JTX_rmw Radius of Maximum Wind JTWC JTX_poci Pressure of outermost closed isobar (reported by JTWC) JTWC JTX_roci Radius of outermost closed isobar (reported by JTWC) JTWC JTX_eye Storm eye size (reported by JTWC) JTWC JTX_w34_r1 34 knot wind radii for quadrant 1 JTWC JTX_w34_r2 34 knot wind radii for quadrant 2 JTWC JTX_w34_r3 34 knot wind radii for quadrant 3 JTWC JTX_w34_r4 34 knot wind radii for quadrant 4 JTWC JTX_w50_r1 50 knot wind radii for quadrant 1 JTWC JTX_w50_r2 50 knot wind radii for 2nd quadrant JTWC JTX_w50_r3 50 knot wind radii for quadrant 3 JTWC JTX_w50_r4 50 knot wind radii for 4th quadrant JTWC JTX_w64_r1 64 knot wind radii for quadrant 1 JTWC JTX_w64_r2 64 kt wind radii for quadrant 2 JTWC JTX_w64_r3 64 knot wind radii for quadrant 3 JTWC JTX_w64_r4 64 knot wind radii for quadrant 4 JTWC DESCRIPT GeoPlan added field based on NAME GeoPlan FGDLAQDATE Date GeoPlan acquired data from the source. GeoPlan AUTOID Unique ID added by GeoPlan GeoPlan SHAPE.LEN Length in meters GeoPlan Florida Geographic Data Library (FGDL) mailing

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