IWX issues Area Forecast Discussion (AFD) at Dec 25, 3:46 AM EST174
FXUS63 KIWX 250846
AFDIWX
Area Forecast Discussion
National Weather Service Northern Indiana
346 AM EST Wed Dec 25 2024
.KEY MESSAGES...
- Remaining cloudy with areas of drizzle or light rain accompanied
by patchy fog into Thursday.
- Several quick moving systems along with periods of rain will
track across the area from Friday through next Wednesday.
- Temperatures will be much above normal, especially Friday
through Sunday when highs will reach into the 50s.
&&
.DISCUSSION...
Issued at 221 AM EST Wed Dec 25 2024
A weak upper level system was just south of the forecast area.
The GFS isentropic 300K surface showed weak lift today into
tonight with reasonable saturation over southern areas. Dual-
pol radar showed the melting/freezing layer from about 4K to 7K
feet which matches the HRRR sounding near Logansport. An AWOS
reported light snow according to the sensor, but indications are
precipitation should be either drizzle or more probable...
light rain. Surface temperatures have dipped below freezing over
northern Indiana early this morning with Angola falling well
below freezing with some breaks in the clouds there. Can not
rule out a brief instance of freezing rain, but have kept just
rain or drizzle in the forecast for now. No weather related
travel issues are expected and even the fog is not expected to
become widespread or dense.
Otherwise, mild air will continue to spread over the forecast
area from the southwest causing temperatures to rise much above
normal. Several weaker systems in the large scale flow are
expected to bring subsequent rounds of rain through the end of
the year next Wednesday.
&&
.AVIATION /00Z TAFS THROUGH 00Z THURSDAY/...
Issued at 1201 AM EST Wed Dec 25 2024
Weak srn stream sw disturbance over the lower MS valley early this
morning will shear out newd into the wrn OH valley late tonight.
Meager forcing present as this occurs but decent low level
moisture return noted in cross sections which should promote
some chance for drizzle/fog by mid to late aftn. Thus widespread
MVFR presently is expected to deteriorate further by aftn into
widespread IFR and likely LIFR in time given increasing
saturation depths and moist e-serly flow.
&&
.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...None.
&&
$$
DISCUSSION...Skipper
AVIATION...T
Source:
IWX issues Area Forecast Discussion (AFD) at Dec 25, 3:46 AM EST---------------
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