404
FXUS63 KIWX 251820
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
220 PM EDT Wed Sep 25 2024

.KEY MESSAGES...

* Isolated showers possible this afternoon.

* Rain showers associated with a tropical system enter the
  forecast late Friday afternoon through the weekend.

* Seasonable temperatures are replaced by a temporary dose of
  fall by the middle of next week.

&&

.DISCUSSION...
Issued at 220 PM EDT Wed Sep 25 2024

Isolated showers will remain possible near a weak trough axis across
northern IN and srn MI this afternoon given sufficient boundary
layer moisture and diurnal heating. This trough washes out tonight
into tomorrow with drier easterly winds developing on the southern
fringe of a low level anticyclone building northeast into the Great
Lakes. Clearing and winds becoming light/variable for a time later
tonight may allow for some patchy ground fog to develop across
mainly nw IN and portions of southern MI.

Main focus into Friday and the weekend will turn to Hurricane Helene
remnants being absorbed into a leftover upper low over the western
TN Valley. Friday likely remains dry with northeast winds becoming
breezy in response to the sfc low center pivot north-northwest into
Kentucky for a time. A few bands of light rain may clip the area on
the northern fringe later Friday into Saturday, best chances south
of US 30/24. Seasonable temperatures expected otherwise before a
cold front brings a shot of fall-like temps by the middle of next
week.

&&

.AVIATION /18Z TAFS THROUGH 18Z THURSDAY/...
Issued at 1216 PM EDT Wed Sep 25 2024

Stratocu expected to mix into VFR at or shortly after issuance
this afternoon. Isolated showers are also possible near a weak
trough axis this afternoon, though point chances remain too low
to include in the TAF. Drier air infiltrates the area later
tonight into tomorrow as high pressure develops toward the Great
Lakes region. Low xover values and light/variable winds under a
clearing sky does hint at the risk for shallow BR/FG formation
later tonight at KSBN otherwise.

&&

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

&&

$$

DISCUSSION...Steinwedel
AVIATION...Steinwedel