Severe weather threat over as fall arrives
The severe weather threat is over for central Indiana as the last line of storms are depart toward to the Ohio River. Less humid and stable air continues ride into the state from northwest to southeast after the passage of a cold front that triggered the storms.
This Evening: Thought it remains oppressively humid in southeastern Indiana, you can see the drier 50 degree dew points already advecting into northwestern Indiana. We’re all heading to Comfy Town tonight… so you can open the windows before bed and let the fresh air in. An isolated shower is possible but not likely.
Tonight: You’ll notice a big difference in the feel of the air by midnight and then wake up to cool, crisp conditions with lows near 60. Mostly clear conditions are expected for much of the night, but it’s possible low clouds may creep by sunrise.
Monday: The air mass overhead tomorrow will definitely have a fall feel. It marks the beginning of a three day stretch of temperatures 10 to 20 degrees below normal and near record low levels Monday afternoon into Wednesday morning.
The cold air aloft will allow intervals of low cloudiness to build with spotty afternoon showers Monday afternoon… and really every day this week. The refreshing breeze continues from the NNW at 15 to 25mph. Afternoon highs struggle into the lower 70s and set the stage for an even colder night.
We’ll continue to be on record watch Tuesday morning with lows in the 40s and lower 50s. Tuesday afternoon highs likely climb above the record low maximum… but not by much.
Record lows will again be challenged Wednesday morning with lows near 50 degrees. This stretch of unseasonably cool air ensures that July 2014 will be one of Indianapolis’ coolest on record, and August will at least start on a cooler than normal note.
Despite the daily chance I have on much of the 7 day forecast, there will be ample dry time in the days ahead. Enjoy the evening – Sean Ash