There will be a White Weekend Before Christmas, at least. Snow Friday morning and midday will pile up an inch or two from around Muncie north and eastward. And inch or less is expected elsewhere. Expect a sometimes-slippery Friday morning commute.
That snow-producing clipper is on the map in the Dakotas Thursday morning.
Long-term technical discussion, via the NWS Indianapolis:
Some lake effect snow showers may dip into northwestern portions of
the area Friday night, with some flurries across portions of the
northern half of the area.
Saturday into Sunday night will be quiet across central Indiana with
surface high pressure in control. By Sunday, some upper ridging will
move in briefly as well, keeping conditions quiet. Temperatures will
be below normal, with temperatures getting as cold as the teens for
much of the area for early Sunday morning.
Monday through Christmas and beyond gets more complicated. A series
of upper troughs in both northern and southern streams will impact
the area through this period, providing for frequent chances for
precipitation. Many questions remain on timing and any phasing that
will occur, which leads to lower confidence in details.
What is known that cold air will be bottled up to the northwest of
the area, which will lead to rain as the precipitation type for most
of the period. Temperatures may be cool enough Monday for a period
of mixed precipitation. Otherwise, temperatures will be above normal
for late December.
The 00Z operational GFS still keeps over an inch of rain in southern
portions of the area by the end of Christmas Day, The 00Z ECMWF has
around an inch as well but farther north. Ensembles have come
northward a bit with the rain axis as well. Their values are lower
given that it includes the members that have lower amounts.
Uncertainty is high enough that no mention of locally heavy rain
will be given, but will have to keep an eye out with later forecasts.
INDY SEVEN DAY FORECAST
Today: Mostly cloudy. High 39.
Tonight: Cloudy, with some light snow possible after midnight. Low 30.
Friday: Morning light snow. Less than an inch. High 35.
Friday Night: Partly cloudy. Low 23.
Saturday: Mostly cloudy. High 32.
Saturday Night: Partly cloudy. Low 19.
Sunday: Mostly sunny. High 32.
Sunday Night: Mostly clear. Low 21.
Monday: Clouds increase. Afternoon rain showers, possibly mixed with snow. High 38.
Monday Night: Rain and light snow. Low 35.
Tuesday: Scattered rain showers. High 42.
Christmas Eve: Scattered showers. Low 36.
Christmas Day: Cloudy, with more scattered showers. High 45.






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