01/03/2025
SPRING TORNADO ACTIVITY FORECAST:
Meteorological spring is here, and the question on many weather-savvy minds is “how active will this spring be for tornadoes?”. After taking into account climatological data, relevant global circulations, and thoughts of fellow meteorologists, here is my tornado activity forecast for the April-March timeframe.
MARCH: I expect March to end up near or above average in tornado count across the country, with hotspots of tornado activity in the South and mid-Mississippi valley. An outbreak of tornadoes may be possible as well. March may start off slow and colder in some areas, but I expect a ramp up in tornado activity around mid-late March. An increase in troughing in the west would lead to storm chances increasing, especially for the south. Locally in IL, we would see a cold side and a warm side of the system, with the cold side potentially bringing snow. The overall storm track (track of the low pressure system) should change to being more northerly, which would set up complicated forecasts for snow on the cold side and severe weather on the south side. Northern IL may yet see a few more snows before April, where I expect a massive increase in activity.
APRIL: I expect this April to be very active, likely ending up above average in tornado count. April is typically the sweet spot for powerful synoptic scale systems (troughs and ridges) and abundant moisture from the gulf. Coupled with a shift of what is known as the MJO (Madden-Julian oscillation, a global oscillation that has big effects on our severe weather), the stage could be set for big time tornado outbreaks in April. The hotspots of tornado activity would be focused on the Midwest/Ohio valley, as well as the south. April has been particularly active over the last couple years, and I expect that trend to continue. Be on the lookout for multiple opportunities for tornadoes across the state this April.
One massive driver for tornado activity is ENSO (El Nino Southern Oscillation), and this year we expect a transition from La Niña to Neutral conditions, which typically increases tornado and severe activity in the Midwest. Be sure to stay safe this spring!