Hottest air in more than 9 months arrives Tuesday
While not everyone will see rain or storms today, some areas will see locally heavy downpours and frequent lightning. Where it’s not raining and the sun is out temperatures will warm quickly into the 80s.
The Muggy Meter will be in the oppressive range and make for uncomfortable conditions, as dew points hover around 70 degrees or higher the rest of the week.
Don’t cancel any plans this afternoon or evening but keep tabs on Live Doppler 13 with isolated chance of a storms or shower moving overhead.
Any precipitation is driven by daytime heating and will quickly diminish after sunset. Prepare to sweat it out early Tuesday, with muggy morning lows in the 70s.
Elevated humidity teams up with our hottest air of the year Tuesday and Wednesday to produce heat indices near triple digits at times. This will be the first 90 degree day in Indianapolis in over 9 months but comes near the climatological average for the first 90 degree day of the season (June 14th).
Within the “hot dome” central Indiana will essentially be rain-free after today, but vigorous storms will erupt on the edge of the “capped” atmosphere to our north and northeast… where severe storms will be likely the next three days. This is is similar to steam spewing out around the edges of “capped” saucer of boiling water on the stove.
An outbreak of severe storms, including strong tornado potential, in the upper Mississippi River Valley on the nose of a warm air advection. This complex will ride northeastward through the western Great Lakes.
By Wednesday the risk of severe storms flirts with our far northern viewing area, and storm chances return Wednesday night into Thursday.
There will be a daily chance of rain and storms heading into the weekend. We may have to wait until Sunday evening for relief from the stuffy air. Have a great day – Sean Ash