Warm weather has just kept on going these past few days and doesn't look to stop until we reach the weekend! With highs in the low 80's yesterday we hit 80° two days in a row with another two days of similar temperatures ahead!
Just like yesterday a very similar environment will be in place as daytime sunshine will build instability into the evening which may spark up a few isolated showers and thunderstorms. Once again, we're not expecting widespread rainfall but for those who may experience a brief shower or thunderstorm today a quick downpour can't be ruled out. Besides that, though, temperatures will be right back in the low 80's with a bit of humidity and mugginess sticking around!
Our main focus at this time continues to be on tomorrow as our next chance of strong to severe thunderstorms arrive with our next low-pressure system. Through the afternoon tomorrow temperatures will climb quickly while also building instability. As a cold front approaches from the west thunderstorms may begin to develop. As it stands right now, northeastern portions of the state line are under a 3/5 Enhanced Risk while areas to the southwest remain under a Slight 2/5 risk. Areas in the enhanced risk may have a bit higher of a chance to see strong to severe thunderstorms especially portions of southern Wisconsin.
Even though we're only a day out there is still a lot of unknown with our chances of severe weather tomorrow. What we do know is that the environment needed for severe storms will be there as good moisture, instability, and wind shear will be there to support strong thunderstorms. The question is will we get thunderstorms within this environment. As we've gotten closer it looks like a little more agreement has been made that a one or two of these storms may fire in Northern Illinois or Southern Wisconsin.
Areas of Southern Wisconsin still have a bit higher threat as there will be a bit more forcing along the cold front, however if storms were to form tomorrow our main concern would be large hail and damaging wind gusts as dry air above the ground will help create bigger hail and send stronger winds downward. If our dewpoint temperatures tomorrow are a few degrees higher than expected, an isolated tornado cannot be ruled out as well.
The one guarantee for tomorrow though is that it will feel HOT out there. Temperatures will make a run at 90° tomorrow and with a little extra sunshine we can very well hit 90°. Dewpoint temperatures will also be in the mid 60's through the afternoon tomorrow as well which will shoot heat indices well into the 90's. So, during the afternoon and evening tomorrow it will be a day to both keep an eye on the heat making sure to limit time outside, while also keeping up with the forecasts and paying attention to watches/warnings.
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