Area Forecast Discussion
Issued by NWS Northern Indiana

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FXUS63 KIWX 222007

Area Forecast Discussion
National Weather Service Northern Indiana
307 PM EST Wed Nov 22 2017

Issued at 1240 PM EST Wed Nov 22 2017

Lake effect clouds will gradually diminish late this afternoon
into this evening. Clouds will increase again overnight into early
Thanksgiving morning as a weak system approaches for the west, but
clouds are expected to diminish again for Thanksgiving afternoon
as this system pushes eastward. Dry weather is expected for
tonight through Friday afternoon, with only a small chance of
light rain Friday night. Low temperatures tonight will drop into
the mid 20s. High temperatures on Thanksgiving afternoon will
reach into the lower 40s.


.SHORT TERM...(This Evening through Thursday)
Issued at 306 PM EST Wed Nov 22 2017

A large ridge of high pressure extended into the region this
afternoon. Subsidence associated with this system will help skies
clear temporarily over the forecast area tonight. However, a layer
of middle clouds ahead of the next system is expected to spread
across the skies overnight. Low temperatures tonight may occur
before midnight at 25 or 26 degrees ahead of the advancing cloud
layer. Dry weather will persist Thursday as temperatures start to
rebound with highs near 40.


.LONG TERM...(Thursday Night through Wednesday)
Issued at 306 PM EST Wed Nov 22 2017

A generally mild and dry pattern is ahead after Thanksgiving
through the middle of next week. Only a few small chances for
rain are in the forecast including Friday night and then Tuesday
night into Wednesday as the 3 to 4 day cycle of cold front
passages continues. These chances of rain correspond to the timing
of the fronts. There is considerable uncertainty with the timing
of the front during the middle of next week; a slower solution
would support a mild Wednesday with highs in the 50s.


.AVIATION...(For the 18Z TAFS through 18Z Thursday Afternoon)
Issued at 100 PM EST Wed Nov 22 2017

Lake effect low clouds will gradually diminish/shift east of the
terminals late this afternoon into early this evening as low
level winds back in response to departing anticyclone. Cigs with
lingering lake effect stratocu are primarily VFR. Otherwise,
departure of low clouds will be replaced by increasing mid clouds
overnight into early Thursday in response to next mid level short
wave. These clouds should exit for Thursday afternoon. Light
southwest winds will develop this evening, with diurnal mixing and
tightening gradient promoting southwest winds of 10 to 15 knots
later Thursday. Some gusts to 15 to 20 knots will also be
possible Thursday afternoon.




SHORT TERM...Skipper
LONG TERM...Skipper

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