Area Forecast Discussion
Issued by NWS La Crosse, WI

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FXUS63 KARX 242335

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

.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

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

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 00Z TAFS through 00Z Saturday evening)
Issued at 535 PM CST Fri Feb 24 2017

An area of light snow will move from west to east across the area
this evening, producing reductions in visibility down to 1SM at
both KLSE and KRST. Based on latest radar trends, snow should end
at KRST by 25.02Z and by 25.05Z at KLSE. As snow ends, current IFR
visibility and MVFR ceilings will quickly improve to VFR.
Any ceilings thereafter will be above 3000 ft agl with a
scattering out by Saturday morning. Gusty northerly winds this
evening into the overnight will diminish Saturday and shift to
the west late in the period.


WI...Winter Weather Advisory until 6 AM CST Saturday for WIZ017-029-

MN...Winter Weather Advisory until 6 AM CST Saturday for MNZ079-

IA...Winter Weather Advisory until 6 AM CST Saturday for IAZ008>011-



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