Similar to Monday, Tuesday will feature a chance for scattered thunderstorms with the heating of the day late in the afternoon and evening.
Cloud cover continues to clear us to the east this morning with temperatures falling into the low 50s. It's a cool start this morning with a lighter wind, but the northwest breeze will increase during the afternoon, gusting around 25 mph. Another low-pressure system moving in from the northwest will bring with it scattered thunderstorms for the late afternoon and evening. While an isolated shower or two can't be ruled out early in the afternoon, thunderstorm coverage should increase after 5pm.
Instability won't be quite as high as it was Monday afternoon but colder temperatures aloft with the incoming low will cause the air mass to quickly rise from the surface. This will help generate some of the thunderstorms, even without the presence of higher instability. This type of low is known as a 'cold core low'.
The strongest storms will be capable of producing penny to quarter sized hail, along with wind gusts to 60 mph. This is why the Storm Prediction Center has placed southern Wisconsin and northern Illinois under a marginal risk for isolated severe storms Tuesday. Remember, when you see lightning or hear thunder you need to head indoors!
Storm coverage will come to an end after sunset. Skies will remain partly cloudy with overnight lows falling into the low 50s.
No comments:
Post a Comment