Area Forecast Discussion
Issued by NWS La Crosse, WI

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FXUS63 KARX 120750

Area Forecast Discussion
National Weather Service La Crosse WI
150 AM CST Mon Feb 12 2018

.SHORT TERM...(Today through Tuesday Night)
Issued at 150 AM CST Mon Feb 12 2018

High pressure building into the area early this morning. Clear skies
and light winds allowing temperatures to slide into the single
digits as of 1 am.

Main concern will be impact of weakening mid-level trough ejecting
out of the Rockies into the Upper Mississippi River Valley region
tonight into Tuesday. Main impact will be an increase/thickening in
high and mid level cloudiness. Weak warm air advection with the wave
also expected to produce highs in the middle 20s to lower 30s, which
is near normal. Increasing south/southwest flow Tuesday night in
warm sector of Canadian low will produce overnight lows in the teens
to lower 20s.

.LONG TERM...(Wednesday through Sunday)
Issued at 150 AM CST Mon Feb 12 2018

Warmup on tap for Wednesday as the area will be in warm sector of
low pressure moving into Ontario Canada. Southwest surface flow,
mostly sunny skies, and 925mb temperatures warming into the +1 to
+6C range are expected to push highs into the upper 30s to middle

A cold front pushes south into the area Thursday as weak area of low
pressure moves into IA/IL for increasing clouds and a chance of rain
and snow. Look for highs Thursday in the 30s and lows Thursday night
dropping into the single digits/lower teens.

Friday through Sunday looking dry for now but may have to watch
Saturday as a mid-level trough drops southeast out of Canada into
the Great Lakes region. Right now, it appears pops will remain north
of the area. Otherwise, plan on highs Saturday in the upper 20s to
middle 30s and middle 30s to lower 40s for Sunday.


.AVIATION...(For the 06Z TAFS through 06Z Monday night)
Issued at 1130 PM CST Sun Feb 11 2018

VFR conditions will continue at TAF airfields through 13.06Z as
surface high pressure builds across the region. Mostly clear/sunny
skies into Monday morning will gradually give way to increasing
high clouds through the day. Winds will be light (12 kts or less),
favoring a northwest direction through much of Monday, becoming
light and variable Monday evening.




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