Climatology

Annual and monthly tornado day averages by NWS forecast areaAnnual and monthly tornado day averages by NWS forecast area

Annual and monthly tornado day averages by NWS forecast area

Many offices of the Weather Service see five or more tornado days in the average year.

3 years ago
Maximum tornado probabilities by month and yearMaximum tornado probabilities by month and year

Maximum tornado probabilities by month and year

Past forecasts from the Storm Prediction Center offer many clues. A visual examination of the data back to 2002.

3 years ago
Early May tends to be feast or famine for tornadoesEarly May tends to be feast or famine for tornadoes

Early May tends to be feast or famine for tornadoes

Even though May is the peak of tornado season, a lull to start the month is not as unusual as…

9 years ago
Here’s where tornadoes typically form in September across the United StatesHere’s where tornadoes typically form in September across the United States

Here’s where tornadoes typically form in September across the United States

Tornado territory begins to noticeably shrink as fall arrives across the country. Tropical systems can spell big trouble.

10 years ago
Here’s where tornadoes typically form in August across the United StatesHere’s where tornadoes typically form in August across the United States

Here’s where tornadoes typically form in August across the United States

The heart of tornado season is always in retreat by August. That said, it's kind of like a quiet July…

10 years ago
Here’s where tornadoes typically form in July across the United StatesHere’s where tornadoes typically form in July across the United States

Here’s where tornadoes typically form in July across the United States

Tornado numbers begin their typical decline in July. It can be rapid some years, but given it's the peak heating…

10 years ago
Here’s where tornadoes typically form in June across the United StatesHere’s where tornadoes typically form in June across the United States

Here’s where tornadoes typically form in June across the United States

June is typically the final month of peak tornado activity in any given year. What it often lacks in huge…

10 years ago
Here’s where tornadoes typically form in May across the United StatesHere’s where tornadoes typically form in May across the United States

Here’s where tornadoes typically form in May across the United States

May is typically the peak of the peak of the tornado year. Maps show the spots most at risk based…

10 years ago
The month with the most tornadoes by countyThe month with the most tornadoes by county

The month with the most tornadoes by county

Tornadoes occur throughout the year. Find out when your county's peak month is.

10 years ago
Here’s where tornadoes typically form in April across the United StatesHere’s where tornadoes typically form in April across the United States

Here’s where tornadoes typically form in April across the United States

The typical three-month peak of the tornado year begins in April. And April's fury often targets population.

10 years ago
Here’s where tornadoes typically form in March across the United StatesHere’s where tornadoes typically form in March across the United States

Here’s where tornadoes typically form in March across the United States

While March is not a peak month, an awakening from the tornado slumber in winter is often quite evident.

10 years ago
Here’s where tornadoes typically form in February across the United StatesHere’s where tornadoes typically form in February across the United States

Here’s where tornadoes typically form in February across the United States

Once February is here, spring is right around the corner. And although it's another winter month, tornadoes can be expected…

10 years ago
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