IWX issues Area Forecast Discussion (AFD) at Jul 20, 7:27 PM EDT
360
FXUS63 KIWX 202327
AFDIWX
Area Forecast Discussion
National Weather Service Northern Indiana
727 PM EDT Sun Jul 20 2025
.KEY MESSAGE...
- Hot and humid conditions will develop Wednesday and persist
through Friday with highs in the lower 90s and heat indices
from 100 to 105.
&&
.DISCUSSION...
Issued at 136 PM EDT Sun Jul 20 2025
Early this afternoon, a cold front had moved south into the
forecast area. An area of rain with a few embedded thunderstorms
was moving east across northern Indiana into Ohio. The strongest
storms have congealed just south of the forecast area where the
airmass was much more unstable. Given the stability of the
airmass over the forecast area with cloud cover and rain cooled
air, heavy rainfall is no longer expected. Patches or areas of
light rain should persist into Monday evening mainly south of
Highway 30. Conditions from Monday evening into Thursday should
be mainly dry.
Hot and humid conditions are ahead this upcoming week. The hot
weather will return by Wednesday and persist through the
weekend. High temperatures are expected to be around 90 degrees
into the lower 90s with heat indices from 100 to 105. Heat
headlines are likely to eventually be issued.
&&
.AVIATION /00Z TAFS THROUGH 00Z TUESDAY/...
Issued at 723 PM EDT Sun Jul 20 2025
Rain chances are ending as a stationary front drops south of the
terminals and into central IN. As skies gradually clear,
radiation fog is possible tonight. The probability for MVFR (or
lower) conditions at KFWA is greater than KSBN per the in-house
blend. Forecast soundings do depict a somewhat stronger
inversion and low-level inversion at KFWA than KSBN. Given the
inherited TEMPO BR, I've opted to keep this. Dry weather is
favored for Monday with wind at or below 10 knots.
&&
.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...None.
&&
$$
DISCUSSION...Skipper
AVIATION...Brown
Source: IWX issues Area Forecast Discussion (AFD) at Jul 20, 7:27 PM EDT (https://mesonet.agron.iastate.edu/p.php?pid=202507202327-KIWX-FXUS63-AFDIWX)
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