Storm chance late tonight and Wednesday

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Updated: .
Sean Ash

We’re sweating through an oppressive Muggy Meter today in central Indiana with hot, hazy conditions. Afternoon temperatures will be in the mid to upper 80s with heat indices firmly in the 90s.


Patience is required if you’re not a fan of the sticky air, but will be rewarded Wednesday afternoon and evening.


There is a chance of some storms late tonight (after midnight) and toward sunrise Wednesday and northwestern Indiana is under a Slight Risk for severe weather. But I have serious doubts there will be much storm coverage due to a warm air “lid” over central Indiana.

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Expect very humid conditions to start tomorrow, but drier air arrives in the afternoon after the passage of a cold front around midday. The transition keeps storm chances in play for areas along, and especially south of I-70.

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You should notice a refreshing breeze kicking in later in the day that drag in pleasant air for late week.

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Thursday looks like a fine day with sunshine and highs in the mid-70s, which is perfect timing for the beginning Brickyard 400 festivities at IMS. Expect plenty of sun and comfortable conditions.

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Our coolest temperatures happen Thursday night into Friday morning when many drop into the 50s. Friday will be warmer as highs near 80.



Latest model trends point toward a potentially active set up this weekend in central Indiana… with multiple storm complexes possible on the edge of the hot dome centered to our west. There is much uncertainty on timing and coverage at this point, but know that the first complex may arrive Friday night into Saturday morning. This set up could have big implications on weekend plans and Brickyard 400 festivities. Check back for updates.


As this blog has addressed for several days now, all signs lead to another impressive bout of unseasonably cool air next week… beginning Monday and lasting into the first week of August.


There is general consensus in modeling of a high amplitude trough over the eastern US that would deliver an air mass capable of 10 to 20 degree temperature anomalies. So we’ll go from near 90 degrees today to highs in the lower to mid 70s this time next week.


Notice in the image above (GFS ensemble data provided be the stretch of lows in the 50s beginning Tuesday and lasting for several days. This will allow for a nice stretch of A/C free conditions. However we do need some rain and hopefully your backyard gets some Wednesday or this weekend.

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Thanks for visiting the blog and have a great evening – Sean Ash