Annual Dry Thunderstorm Days (Fire Weather Outlook) on a density map since 2015

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Annual Dry Thunderstorm Days

Annual Dry Thunderstorm Days / Fire Weather Outlook since 2015
NWS SPC fire weather outlooks archived and accessed via IEM/Iowa State
Data analysis based on Storm Prediction Center outlooks from April 2015 to April 2025.
Graphic created by Joseph Patton (UMD/ESSIC/CISESS)

Density map showing the average number of annual dry thunderstorm days in the Day 1 Fire Weather outlook from the Storm Prediction Center (NWSSPC). The areas that stick out are southeastern Oregon and northern Nevada which experience on average more than 20/year.