Downpours on the way to open Summer’s final weekend; Late season heat coming

MILDER THURSDAY

The east wind blowing Thursday delivered a milder brand of air for most of central Indiana Thursday, however the front has stalled.

The spread in temperatures from northeast to southeast isn't all that dramatic but the lack of humidity is.  Note the spread in dew point temperatures at 4 PM.

The drier air is holding but will give way as winds chance direction later tonight.

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100th 80° DAY OF 2016

To date 2016 has produced 100 80 degree days, equaling all of 2015's.  We average 100 per year with the average date of the last 80° day October 7th.

The years of 2007 and 2010 produced the most 80 degree days (135) and the latest 80° came November 1st 1950.

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RAINFALL TO RETURN

The forecast of showers and thunderstorm holds for the final weekend of summer but the timing is now coming into focus and it is promising!

Scattered showers and a few storms are possible as early as late afternoon Friday.  The coverage in rainfall will increase during the overnight hours into Saturday morning.  Locally heavy downpours are possible but are expected to scatter and diminish before sunrise Saturday.

We are expecting many extended rain-free hours with only a brief burst of scattered showers and a few thunderstorms again later Saturday afternoon and evening.  With the passage of a cold front later Saturday night, Sunday is looking dry.  We will monitor the trends and update!

RPM model forecast radar 8 PM Friday

RPM model forecast radar 8 PM Friday

LATE SEASON HEAT

We haven't had a 90° day past September 15th in 6 years and that could change later next week.  A warmer pattern will take hold to end summer and to open the astronomical open to fall next Thursday.  An upper level, late season heat dome overhead will bring very warm temperatures for much of the eastern U.S.  We could reach the 90° Thursday and Friday next week.

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