Late night storms signal onset of the hottest of the season; Much of the weekend will be dry

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Dry time will hold early Thursday evening but showers and storms will develop later tonight.  A late night jet stream combined with an approaching warm front should set things in motion later tonight and created some gusty t-storms and bring locally heavy rainfall.  The Northwest to southeast cluster of storms will be prolific rain makers and produce vivid lightning and some locally gusty winds through daybreak Friday.  Location is the key!  Current trends bring the storms into north central to east central Indiana.  Some areas could receive upward of 1 to 2 inches of rain while other locations receive none.  Be sure to check on air on Fox 59 for the latest location of the storms later tonight.  I'm posting the most current radar forecast for 3 AM Friday below.

ADI 18z RPM 4km-12km 72hr


Temperatures are set to surge to near or above 90 degrees starting Friday and potentially hold into early next week.  Hottest day still looks to be Saturday with a temperature of 93° and a heat index nearing 100°.  Those sensitive to poor air quality should reduce time spent out doors Friday and Saturday.  A KNOZone action day has been declared by the city of Indianapolis and the EPA for Friday and Saturday afternoons.

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The combination of very high moisture in the atmosphere (dew point) and the hot temperatures will produce a heat index nearing 100° Saturday afternoon.  This will be the hottest air since early September last year.  There is a potential of reaching 90° each of the next 4 days.  Be sure to stay cool!  Take may breaks, drink plenty of water and keep your pets cool as well.

Regional 18z RPM 12km Dew Point

ADI 18z RPM 4km Temperature


We are working on clearing much of the weekend form the train threat.  After overnight and early storms Friday morning, the rain threat looks small until later Monday into Tuesday.  A wind shifting,  dew point reducing front may be enough to produce a scattered shower or a few scattered storms late Saturday night into Sunday morning.  Beyond that threat, most areas will remain rain free until showers and storms arrive Tuesday and most likely Wednesday of next week.

Regional 18z RPM 4km-12km 72hr