Area Forecast Discussion
Issued by NWS La Crosse, WI

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FXUS63 KARX 250536
AFDARX

Area Forecast Discussion
National Weather Service La Crosse WI
1136 PM CST Fri Feb 24 2017

.UPDATE...
Issued at 1136 PM CST Fri Feb 24 2017

Accumulating snow has moved east into southwest and central
Wisconsin with a return to dry conditions farther west. As a
result, cancelled the Winter Weather Advisory for all of southeast
MN and northeast IA, as well as Buffalo and Trempealeau Counties
in WI. Roads likely to remain snow covered and slick overnight, so
motorists should continue to use caution if traveling tonight.

&&

.SHORT TERM...(This evening through Saturday)
Issued at 314 PM CST Fri Feb 24 2017

At 3 PM, a 960 mb surface low was located near Benton Harbor
Michigan. The deformation band with this system is currently
moving east across southeast Minnesota and northeast Iowa.
The 29.12z models are in good agreement that this snow band will
move east across the area tonight and it will likely exit the
area by 3 AM Saturday morning. Additional snow amounts will be up
to 2 inches.

With the surface pressure gradient looking less tight and the low
level lapse rates not as steep tonight, lowered the sustained wind
speeds into the 15 to 25 mph range and wind gusts into the 25 to
35 mph range. This will cause some blowing and drifting snow. As a
result...kept the Winter Weather Advisory going tonight.

.LONG TERM...(Saturday night through Friday)
Issued at 314 PM CST Fri Feb 24 2017

On Saturday night and Sunday, a weak short wave trough will move
quickly through the region. With limited moisture across the
area, any snow accumulations will be very light. At this time,
only anticipating up to a half inch of snow north of Interstate
90.

On Tuesday, another quick moving low pressure system will move
through the region. Warm air advection ahead of this system will
provide just enough warming in the atmospheric column for a rain
south of Interstate 90. Elsewhere the precipitation will be a mix
of rain and snow. QPF amounts look to be up to a quarter of an
inch.

On Thursday and Thursday night, a clipper system will move
southeast through norther Minnesota and northern Wisconsin. With
the best moisture transport and lift north of the area. Not
anticipating any impacts from this system at this time.

&&

.AVIATION...(For the 06Z TAFS through 06Z Saturday night)
Issued at 1136 PM CST Fri Feb 24 2017

Accumulating snowfall has moved east of TAF airfields allowing for
improved visibility. KLSE could still see an hour or two of MVFR
ceilings, but otherwise VFR clouds will be the rule overnight and
through the rest of the period. Breezy north-northwest wind
overnight will gradually diminish through the period and turn to
the west-southwest by Saturday afternoon.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...Winter Weather Advisory until 6 AM CST Saturday for WIZ017-029-
     034-041>044-053>055-061.

MN...None.
IA...None.
&&

$$

UPDATE...Rogers
SHORT TERM...Boyne
LONG TERM...Boyne
AVIATION...Rogers



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