Many offices of the Weather Service see five or more tornado days in the average year.
Past forecasts from the Storm Prediction Center offer many clues. A visual examination of the data back to 2002.
May is by far the favorite in total counts. April leads for strong tornadoes.
While outbreak details evolve into the day one happens, there are a number of large scale pattern hints to look…
We can get an idea of the tornado forecasting normal by looking at past data.
A quick look at when the first and last violent tornado of the year typically happens, and some potential trends…
All states have had a big tornado day, and many have come in recent decades.
Chasing prizes often come down to persistence, but there are ways to play the odds.
Simple ways of defining tornado days leave a lot to be desired.
Here's a concise look at the official tornado record.