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Question · Geographic area

Tornado occurrence climatology

How frequently have tornadoes of stated intensity occurred in this area?

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Question SRC SPC Severe Weather… SRC NOAA NCEI Storm Ev…

The data that answers it

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NOAA National Weather Service Primary fit
SPC Severe Weather Database

The official open 1950–2025 tornado archive supplies dates/times, F/EF magnitude, start/end coordinates, path dimensions, jurisdiction keys, segment controls, and raw versus de-segmented tracks with dated release and rating-era caveats. Synthetic GIS endpoints are not observed extent.

Free Full file National US 10 fields
NOAA National Centers for Environment… Supporting fit
NOAA NCEI Storm Events Database

Open event/location files support tornado occurrence counts by area/window; no tornado-intensity scalar is claimed from the current Feature inventory.

Free Full file Multi-country 8 fields

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