The Week Ahead: Quiet, Cold, But Potential Weekend Heavy Rain Maker Needs To Be Monitored

Happy Monday everyone (if there even is such a thing.) Hopefully those of you in the north are doing well after the blizzard. We'll have some followup information on that to come, but for now lets take a look at the week ahead. 

Overall it will be quiet and uneventful until the weekend when we have a potential heavy rain maker that could cause some problems. More on that in a moment. 

Tuesday through Thursday:

High pressure will settle in behind the blizzard. Tuesday will be a very cold day across the state, but dry. Temperatures will range 10-15 degrees below normal for most people. Wednesday will be a similar story, just add maybe 5-8 degrees to the high temps, so while chilly, it wont be as cold. 

Temperatures will moderate a bit on Thursday which will be the next chance for high temperatures to get above freezing for the entire state. The exception will be across northern Illinois where a deep snowpack is established. A weak impulse will move through bringing a chance for light snow - minimal accumulations at best.

Further moderation occurs on Friday, especially across southern Illinois which should warm pleasantly into the mid/upper 50s. A weak impulse ahead of a developing system over the plains brings a chance for light rain during the morning and afternoon.

That system could be a potential trouble maker for Saturday. Models are hinting at another fairly strong system to develop, only this one will not tug in as much cold air behind it. Precipitation looks to fall as mostly rain - and it could be heavy. The GFS model shows as much as 1.7 inches of rain falling over northern Illinois. On top of a deep snowpack and after a week of frozen ground this could cause some flooding problems and will need to be watched closely. No need to sound the panic alarms yet but this is easily the next period we are watching for weather concerns. 

The system will exit quickly on Sunday, followed by more quiet weather and seasonal temperatures. Early next week sees another maker potentially around Tuesday as a more active trough pattern tries to take hold, but we'll hold off on discussing that for now. 

High temperatures Thursday, not the area still below freezing over where the heaviest snowpack is currently established. 

Light Precip (probably snow) associated with weak wave that passes through on Thursday

Low pressure system moving through on Saturday along with a warm temperature profile bringing mostly rain.

24hr precip accumulation as shown by the GFS. Those values over 1 inch across northern Illinois could bring some flooding concerns on top of a deep snowpack.

There we have our upcoming week! We'll continue to monitor the precip makers and keep you all informed. Have a great week everyone!

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ALUCIO