Claypool, Indiana Weather Forecast Discussion

599
FXUS63 KIWX 251819
AFDIWX
Area Forecast Discussion
National Weather Service Northern Indiana
219 PM EDT Thu Sep 25 2025
.KEY MESSAGES...
- Slight chance (20%) for an isolated shower this afternoon into
  early this evening.
- Patchy fog, locally dense, possible early Friday morning.
- Extended period of dry weather and sunshine Friday through at
  least the middle of next week.
&&
.DISCUSSION...
Issued at 218 PM EDT Thu Sep 25 2025
Upper trough swinging through in cyclonic flow will generate a few
showers this afternoon into early this evening given lingering
boundary layer moisture and weak diurnal instability. This trough
axis exits off to the east tonight into Friday with heights on the
rise with a drier/subsident air mass filtering in. Otherwise,
clearing skies and light winds may allow for some patchy
fog/stratus to develop overnight into early Friday as the near
sfc layer will be slower to dry out.
A stretch of pleasant (dry/warmer) weather then settles in Friday
through at least the middle of next week. Upper ridging building
east from the Canadian Prairies/Northern Plains to the Great
Lakes and Ontario in a pseudo omega block pattern will provide
this quiet wx pattern locally.
&&
.AVIATION /18Z TAFS THROUGH 18Z FRIDAY/...
Issued at 148 PM EDT Thu Sep 25 2025
Northwest winds 7-10kts through the afternoon with occasional
passing showers through sunset. Overnight, MVFR/IFR conditions
will be possible for much of the area as patchy fog develops.
Lower confidence near SBN and areas west, so have left that out
of this TAF package for now. Once fog burns off through daybreak
tomorrow, VFR prevails under mostly clear skies and light winds.
&&
.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...None.
&&
$$
DISCUSSION...Steinwedel
AVIATION...Norman

NWS IWX Office Area Forecast Discussion