489
FXUS63 KIWX 200841
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
341 AM EST Thu Nov 20 2025

.KEY MESSAGES...

- Areas of drizzle and fog this morning.

- Areas of rain Friday and Friday night.

- Highs 40s and 50s, then turning much colder for Thanksgiving.

&&

.DISCUSSION...
Issued at 200 AM EST Thu Nov 20 2025

Mild air was gradually spreading over a cooler layer above the
ground. This scenario was causing fog and patchy light drizzle
to form. As of 3 AM EST, all reporting stations in the forecast
area were above 1 mile. BUFKIT soundings show the lower layers
drying out by late morning. Conditional climatology strongly
favors the low clouds hanging on through the morning, so have
the visibilities improving but the skies remaining cloudy to
mostly cloudy. Temperatures are expected to stay above freezing
the rest of the night. Hillsdale should drop to about 35 degrees
but BUFKIT profile stays too mild to support snow.

Temperatures should stay above normal into early next week with
highs mostly in the 50s. Another upper level system will eject
east Monday and Monday night. More light rain is expected with
this system. Boundary layer temperatures will initially continue
to stay too mild to support snow. Much colder air is expected
to arrive just before Thanksgiving bringing the chance for a
rain and snow mix starting next week Wednesday night.

&&

.AVIATION /06Z TAFS THROUGH 06Z FRIDAY/...
Issued at 1214 AM EST Thu Nov 20 2025

Weak warm advection over a saturated inversion may allow for
times of drizzle and visibilities reduced to 1-2 miles this
morning, mainly at KSBN. Light winds and cigs generally IFR to
low MVFR otherwise through much of the period as pesky low
clouds likely persist.

&&

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

&&

$$

DISCUSSION...Skipper
AVIATION...Steinwedel