Denver, Indiana Weather Forecast Discussion

297
FXUS63 KIWX 170454
AFDIWX
Area Forecast Discussion
National Weather Service Northern Indiana
1254 AM EDT Wed Sep 17 2025
.KEY MESSAGES...
- Remaining warm and dry through Friday with highs in the mid to
  upper 80s.
- Rain shower chances (20-40%) arrive this weekend into early
  next week.
&&
.DISCUSSION...
Issued at 205 PM EDT Tue Sep 16 2025
Expansive upper level ridge to gradually shrink overhead through the
remainder of the week as northern stream shortwave energy through
Ontario/Quebec eventually absorbs a Mid-Atlantic closed low up the
East Coast. The dry and stable column under this upper ridge will
continue to ensure more warm and dry weather locally through Friday.
Some weak moisture flux off Lake Erie in weak easterly flow may once
again support patchy fog/stratus formation toward daybreak along and
east of the Ohio border early Wednesday morning.
The ridge breaks down this weekend into early next week as an upper
trough approaches from the Central US and moisture attempts to
stream northward pre-frontal. This will bring periodic/low
shower chances (20-40%), and non-zero chances for an isolated
storm, back into the fold during this time, with mean ensemble
solutions favoring Sunday into Monday for slightly better rain
prospects (mainly light).
&&
.AVIATION /06Z TAFS THROUGH 06Z THURSDAY/...
Issued at 1251 AM EDT Wed Sep 17 2025
High pressure remains in place over the easter Great Lakes.
Overall, this will provide VFR conditions and wind this
afternoon less then 10 knots. Early this morning, however,
there continues to be the concern for BR at KFWA. Fog is already
seeping in from Lake Erie. Compared to previous nights,
forecast soundings show a strong surface inversion which
increases forecast confidence. Will amend should IFR conditions
become likely.
&&
.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...None.
&&
$$
DISCUSSION...Steinwedel
AVIATION...Brown

NWS IWX Office Area Forecast Discussion