“Spring Weather” in December brings thunderstorms

Dec. 22, 2015: This month is currently on track to be the warmest December on record for Rockford! 2015 is currently nearly 4° warmer for average temperature than the top spot holder, December 1923. One of the side effects from such a warm winter month is that we’ve had plenty of rain, but not much snow so far this month.

The warm weather also means that when a storm system slides through the region, we may see more thunderstorms instead of snow storms.  That will be the case for tomorrow afternoon (head’s up holiday travelers!).

futuretrack 2

Futuretrack for tomorrow afternoon (dated 12/22)

An area of low pressure brings in a lot of warm air, then quickly moves in colder conditions. Thunderstorms will pop up from the clash between the two air masses.  With plenty of moisture to work with, these showers and storms may produce heavy rain at times.  Most of this rain arrives in the afternoon.


We could see up to an inch of rainfall tomorrow.  Watch out along small streams and rivers- there could be some minor flooding between tomorrow’s rain and all of the rain that’s fallen recently. Remember to not set your cruise control during heavy rain, because your vehicle won’t react well to water over the roads and you may hydroplane out of control.


There is even a risk for severe weather, thanks to the warm and humid air moving into the region. While the risk is higher south and east of Peoria, we can’t fully rule out strong to severe thunderstorms south and east of Rockford.


Damaging winds is the main threat from any strong storm tomorrow, but an isolated tornado cannot be ruled out either.  Most of the rain should be leaving the area by tomorrow evening.


In addition to all of the stormy weather, the winds will be strong as well, gusting over 35 mph for much of the day. Have a firm grip on the steering wheel if you are traveling tomorrow!


Overall, make sure you and anyone that you know that is traveling in the region tomorrow is weather aware.  Stay up to speed on the weather forecast, especially during the afternoon when thunderstorms are possible.  Have multiple ways to get weather information and alerts, including your weather radio. Hopefully we won’t have to worry about severe weather, but be on guard just in case!  The weather will be a lot quieter by Christmas Eve.



Posted under weather

This post was written by Alex Kirchner on December 22, 2015

1 Comment so far

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