South Bend, Indiana 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

221
FXUS63 KIWX 092357 CCA
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
756 PM EDT Wed Apr 9 2025

.KEY MESSAGES...

- Widespread light to moderate rain continues this evening and
  overnight, with light snow across far northern areas along
  the IN/MI state line into northwest OH.

- A gradual warming trend is expected through the remainder of
  the week into the weekend, with temperatures returning back to
  above normal by Sunday.

&&

.DISCUSSION...
Issued at 244 PM EDT Wed Apr 9 2025

A broad area of rain (and perhaps a rain/snow mix for some areas)
will continue to expand in coverage and intensity through the late
afternoon and evening hours, courtesy of substantial isentropic lift
on the 290k surface ahead of a fast moving, shallow short wave
trough poised to track across the area overnight. As the isentropic
upglide weakens, strengthening PVA aloft will maintain precipitation
chances through the night as the trough axis translates eastward
across the CWA. In general, expect precipitation to primarily be
rain as thermal profiles appear quite marginal for snow, but cannot
entirely rule out a brief mix especially along the IN/MI state line
into northwest OH where temperatures may drop into the middle 30s
tonight. Any accumulations would likely be insignificant, with
perhaps a couple tenths of an inch possible on grassy or elevated
surfaces should a heavier snow shower move overhead. Rain chances
should decrease markedly by 09-12z Thursday on the back side of the
trough as a much drier air mass moves in, along with some larger
scale subsidence. There will be some potential for patchy fog around
this general time frame as gradients weaken given the recent
widespread precipitation and lowering inversions, but at this time
do not expect widespread dense fog. In general, expect Thursday to
be mainly dry but did maintain some low-end (~15%) PoPs as some
light instability driven showers cannot be entirely ruled out. The
best chance for anything measureable should remain along/south of US-
24. A gradual warming trend can be expected through the weekend as
upper-level ridging builds back into the region, with widespread 60s
returning by Sunday.

&&

.AVIATION /00Z TAFS THROUGH 00Z FRIDAY/...
Issued at 738 PM EDT Wed Apr 9 2025

Deteriorating flight conditions throughout the remainder of the
evening and overnight hours as light rain (mixture of rain/snow
closer to the MI/IN border and into MI) impacts the area. Rain
should exit the area by 06-07 UTC but IFR/LIFR ceilings and
visibilities will persist through the early morning hours as fog
moves in.


&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...None.

&&

$$

DISCUSSION...
AVIATION...Norman