Area Forecast Discussion
Issued by NWS La Crosse, WI

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FXUS63 KARX 131033

Area Forecast Discussion
National Weather Service La Crosse WI
530 AM CDT Tue Mar 13 2018

.SHORT TERM...(Today through Wednesday Night)
Issued at 228 AM CDT Tue Mar 13 2018

GOES-East Water Vapor showing a mid-level vorticity maximum rotating
southeast through western Lake Superior. This was producing some
altocumulus cloud cover east of the Mississippi River but no
precipitation falling out of it so far per latest surface
observations. Temperatures across the area as of 2 am were mainly in
the middle/upper 20s with northwest winds generally 10 mph or less.

The mid-level vorticity maximum will continue to rotate southeast of
the area this morning with cooler cyclonic flow lingering across the
region. Expecting some higher based cumulus development today mainly
east of the Mississippi River in this flow with temperatures topping
off in the upper 20s to the middle 30s. So a bit chillier today with
northwest winds in the 10 gusting 20 mph range adding a little bite
to the air.

Surface ridge of high pressure builds into the area tonight for
mostly clear skies and light winds. This will allow temperatures to
drop into the teens to near 20 degrees.

A mostly sunny, milder day is on tap for Wednesday. Warm air
advection ahead of a weak cold front is expected to push highs into
the upper 30s to near 50 degrees. High pressure builds in again
Wednesday night for mostly clear skies and lows in the upper teens
to middle 20s.

.LONG TERM...(Thursday through Monday)
Issued at 228 AM CDT Tue Mar 13 2018

Quiet/mostly clear period continues Thursday right through the
weekend as high pressure dominates the Upper Mississippi River/
Great Lakes Regions. Plan on highs in the middle 30s to lower 40s
with lows in the teens/lower 20s Thursday and Friday, warming a few
more degrees Saturday and Sunday.

A chance of rain moves in Monday as a weak area of low pressure
drifts out of the Rockies into our region.


.AVIATION...(For the 12Z TAFS through 12Z Wednesday morning)
Issued at 530 AM CDT Tue Mar 13 2018

Cigs/WX/Vsby: upper level disturbance drops southward across eastern
WI today, while high pressure influences in the west. Some potential
for sct-bkn 3-4 kft at KLSE. Overall, anticipate VFR through
today/tonight with no wx/vsby impacts.

Winds: mostly northwest today, becoming light southwest/vrb tonight.




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