IWX issues Area Forecast Discussion (AFD) at Sep 25, 7:11 PM EDT688
FXUS63 KIWX 252311
AFDIWX
Area Forecast Discussion
National Weather Service Northern Indiana
711 PM EDT Thu Sep 25 2025
.KEY MESSAGES...
- 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 /00Z TAFS THROUGH 00Z SATURDAY/...
Issued at 711 PM EDT Thu Sep 25 2025
Residual near-surface moisture could support another night of
patchy fog/stratus development given mostly clear skies and
light winds. Conditions are a bit drier than previous nights
though and the signal in the model guidance is more mixed. Best
chances appear at KFWA where drier air has been slower to advect
in. MVFR is likely with periodic IFR possible roughly 09-13Z.
Otherwise expect VFR conditions with light northwest winds
backing west Friday.
&&
.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...None.
&&
$$
DISCUSSION...Steinwedel
AVIATION...AGD
Source:
IWX issues Area Forecast Discussion (AFD) at Sep 25, 7:11 PM EDT---------------
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