Monday, April 25, 2016

A few strong storms possible Monday


A strong cold front is currently west of northern Illinois, in western Iowa. Ahead of the cold front, northern Illinois and southern Wisconsin are situated in the 'warm - sector ' of the system. Allowing for strong southerly winds to boost temperatures into the upper 70's and low 80's, along with increasing moisture/dewpoints into the mid and possible upper 50's.

Despite some cloudiness this morning, clouds have cleared a bit and this will add to the instability in the atmosphere, needed for thunderstorms. The more sun we see, the more instability we will gain. Other thunderstorms parameters are in place this afternoon, as the cold front sinks closer to the Stateline.

Most of the day will be dry, but once we get closer to 4pm, this is the best timing for a broken line of storms to fire up and head southeastward through northern Illinois and southern Wisconsin. The Storm Prediction Center has outlined the area under a Slight Risk for strong to severe thunderstorms. The best timing of these would be between 4-8pm and the primary concerns in any of these storms would be large hail and damaging winds. With the area under a slight risk, do think one or two storms will be on the stronger side, but not all.



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