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Banner image showing a few highlights from the year



2020 was a relatively average year overall by the numbers. However, there were anomalies within the overall average numbers. Most notable was the lack of strong and violent tornadoes during the May/June time period. This period of very few strong and violent tornadoes led to the first May without a moderate or high risk convective outlook issued and the fewest May tornado watches on record. Despite much below normal tornado activity in May and June, total tornado fatalities (76) were well above normal. 71 of these 76 fatalities occured from January 10 to April 22 with only 5 fatalities during the rest of the year.

2016-2020 Tornado Fatalities

1991-2020 Tornado Fatalities

2016-2020 Tornado Fatalities
1991-2020 Tornado Fatalities

Map showing all the severe weather reports during 2020

2020 Report Summary

Total Reports:21,878
Most active severe month:July
Most active hail month: June
Most active tornado month:April
Additional monthly and yearly report statistics can be found here.



These filtered reports and fatalities are prelimilary data collected from NWS LSR's. Official storm data will be published in NCEI Storm Data.
2020 SPC Watches
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Tornado Watches
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Fewest May Tornado Watches on Record

There were only 10 tornado watches issued during the month of May. This was the fewest number of tornado watches issued in the month of May since records began in 1970.




Yearly May Tornado Watches
Year Watches
2020 10
2018 12
2014 15
2012 18
2005 21





Top 5 Largest Watches
RankDateSize (sq km)Watch #
Top 5 Watch Count Days
RankCountDate
Highest Daily Outlook Probability (2020)
  # of Outlooks Largest Risk Area Jump to Day

General Statistics

  • 356 days (97%) had thunder probabilities.

  • 267 days (73%) had severe weather probabilities.

  • 64 days (17%) had a maximum category of Enhanced or greater.




No Moderate or High Risk in May

There was no moderate or high risk issued in May for the first time in the history of SPC convective outlooks.
Calendar of May showing there were no moderate or high risk days

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Highest Daily Fire Outlook Probability (2020)
  # of Outlooks Largest Risk Area Jump to Day

General Statistics

  • 281 days (77%) had fire weather probabilities in 2020.

  • 92 days (25%) had a maximum category of critical/scattered or greater.





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