This dataset represents data that was compiled from the United States severe report database (tornadoes 1950-2015).

This map layer shows tornado tracks in CONUS, Alaska, Hawaii and Puerto Rico, from 1950 to 2015. Statistical data were obtained from the National Weather Service, Storm Prediction Center (SPC).

Map displaying total tornadoes by county across the state of Tennessee from 1950 to present. This file may not always reflect the current count across the state but will be updated periodically to ensure it remains as updated as possible.For more information, please reach out to sam.shamburger@noaa.gov or sr-ohx.webmaster@noaa.gov.

This is a database of tornadoes that have affected the Huntsville Forecast area this year. National Weather Service Storm Survey information regarding the tornadoes that occurred so far in 2025 within the NWS Huntsville County Warning Area (CWA). Included are storm survey damage points with pictures where available, tornado damage paths, and estimated damage swath information where applicable.

A database of verified tornado tracks across Canada has been created covering the 30-year period from 1980 to 2009. The tornado data have undergone a number of quality control checks and represent the most current knowledge of past tornado events over the period. However, updates may be made to the database as new or more accurate information becomes available. The data have been converted to a geo-referenced mapping file that can be viewed and manipulated using GIS software.

This historical static map of tornado tracks in Alabama documents the historic tornado outbreak that occurred on April 27, 2011.

Historical tornado records for Muskegon County, Michigan from 1950 to present.

Historical tornado records for Erie County, Pennsylvania from 1950 to present.

Map displaying total tornadoes by county across the state of Florida from 1950 to present. This file may not always reflect the current count across the state but will be updated periodically to ensure it remains as updated as possible.For more information, please reach out to brendan.schaper@noaa.gov.

Detailed information, maps, and pictures from significant Arkansas tornadoes and tornado outbreaks utilizing the Damage Assessment Toolkit (DAT) database are provided here. Scroll down to view all tornado events or use the navigation above to jump to a particular tornado event. Note that this is NOT a comprehensive database of all Arkansas tornado events, but serves to highlight the significant events in recorded history, by not just the North Little Rock Forecast Office, but all NWS Offices who serve portions of the state of Arkansas, including NWS Tulsa, NWS Memphis, NWS Shreveport, and NWS Jackson.This database documents several Arkansas significant events within the DAT database, but not all events are represented. Map features including damage points, tracks, and swaths are interactive, and can be clicked within the map to see details, including damage pictures for some locations.

Historical tornado records for Madison County, Alabama from 1950 to present.

This map shows the tornado tracks in central and eastern Oklahoma from June 8, 1974.

Historical tornado records for Utah from 1950 to present.

This is a georeferenced raster image of a printed paper map of the Tornado Mountain, Alberta / British Columbia region (Sheet No. 082G15), published in 1960. It is the first edition in a series of maps, which show both natural and man-made features such as relief, spot heights, administrative boundaries, secondary and side roads, railways, trails, wooded areas, waterways including lakes, rivers, streams and rapids, bridges, buildings, mills, power lines, terrain, and land formations. This map was published in 1960 and the information on the map is current as of 1955. Maps were produced by Natural Resources Canada (NRCan) and it's preceding agencies, in partnership with other government agencies. Please note: image / survey capture dates can span several years, and some details may have been updated later than others. Please consult individual map sheets for detailed production information, which can be found in the bottom left hand corner. Original maps were digitally scanned by McGill Libraries in partnership with Canadiana.org, and georeferencing for the maps was provided by the University of Toronto Libraries and Eastview Corporation.

A web map detailing the tornado tracks of a historic state outbreak of deadly tornadoes in Arkansas on March 1, 1997. This was produced by the National Weather Service Office in Little Rock, Arkansas.

Maps and details of the deadly tornadoes that struck eastern Oklahoma and western Arkansas on April 12, 1945. The maps were re-created from historical accounts of the tornadoes may not necessarily reflect the precise locations where damage occurred in some cases.

Historical tornado records for Crow Wing County, Minnesota from 1950 to present.

(Summary adapted from the WW2010 Home Page)

    April 19, 1996: One of the most memorable tornado outbreaks in
    Illinois history. During the day, 33 tornadoes touching down as
    supercells errupted during the afternoon and evening hours. Winds were
    estimated in excess of 170 mph during some of the stronger
    tornadoes. One of the strongest passed through nearby Ogden, IL.

    This case study provides in depth resources related to the April 19th
    outbreak. The Weather World 2010 offers a large data base of archived
    images with a close examination of the meteorological features
    associated with these storms. Images captured from live video footage
    of selected tornadoes and a summary of the prestorm atmospheric
    conditions are included. In addition, you will find up close and
    personal photographs of the damage the twisters left behind.

    This case study is available via World Wide Web from The Weather World
    2010 Home Page.
    Link to: "http://ww2010.atmos.uiuc.edu/(Gh)/arch/cases/960419/home.rxml"

Case 025 represents one of the most devastating weather events in Utah's history. On August 11th 1999 a tornado moved through downtown Salt Lake City between 18:45 and 18:55 UTC. The tornado damage was rated as F2 on the Fujita scale, and was resonsible for the first recorded tornado death in the state's history and dozens of injuries. Hail up to 1.5 inches in diameter was also reported from this storm. In addition, on the East Coast, flash floods impacted Long Island. Between 13Z and 17Z on August 11, clusters of thunderstorms formed along a warm front. As they moved very slowly east, they produced heavy rain that caused flash flooding from Deer Park to Manorville, NY. Rainfall rates estimated at 1 to 2 inches per hour for up to 3 hours generated rainfall totals from 3 to 5 inches. Water, rapidly accumulating in low-lying areas, swept cars away and trapped people in their vehicles.

For more information, see: http://data.eol.ucar.edu/codiac/projs?COMET_CASE_025

This interactive map shows the tracks of the October 6, 2010 tornadoes in the Flagstaff area. The October 2010 tornado outbreak was the largest in Arizona history and was also notable for producing the highest count of tornadoes ever in a single event that took place west of the Continental Divide. At least nine tornadoes were recorded during the morning hours of October 6, 2010. The most active time was from 4:00 AM - Noon MST. The National Weather Service office in Flagstaff issued 28 Tornado Warnings, 25 Severe Thunderstorm Warnings, and 1 Flash Flood Warning during this event. Multiple tornadic storms repeatedly developed over the same locations in north-central Arizona, keeping the small area under a constant tornado threat for several hours. Large hail (up to baseball-sized) was reported. The duration, intensity, and number of tornadoes distinguished this event apart from any other event in history west of the Continental Divide and in Arizona.For a full event summary visit our event summary page: https://www.weather.gov/fgz/TornadoesOct2010 Sources: NCDC Storm Datahttps://www.ncdc.noaa.gov/stormevents/choosedates.jsp?statefips=4%2CARIZONA

This interactive map shows the tracks of the October 6, 2010 tornadoes in the Flagstaff area. The October 2010 tornado outbreak was the largest in Arizona history and was also notable for producing the highest count of tornadoes ever in a single event that took place west of the Continental Divide. At least nine tornadoes were recorded during the morning hours of October 6, 2010. The most active time was from 4:00 AM - Noon MST. The National Weather Service office in Flagstaff issued 28 Tornado Warnings, 25 Severe Thunderstorm Warnings, and 1 Flash Flood Warning during this event. Multiple tornadic storms repeatedly developed over the same locations in north-central Arizona, keeping the small area under a constant tornado threat for several hours. Large hail (up to baseball-sized) was reported. The duration, intensity, and number of tornadoes distinguished this event apart from any other event in history west of the Continental Divide and in Arizona.For a full event summary visit our event summary page: https://www.weather.gov/fgz/TornadoesOct2010Source: NCDC Storm Datahttps://www.ncdc.noaa.gov/stormevents/choosedates.jsp?statefips=4%2CARIZONA