Area Forecast Discussion
Issued by NWS La Crosse, WI

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS63 KARX 230506
AFDARX

Area Forecast Discussion
National Weather Service La Crosse WI
1105 PM CST Mon Jan 22 2018

.SHORT TERM...(This evening through Tuesday)
Issued at 334 PM CST Mon Jan 22 2018

Hazardous travel continues over portions of southeast Minnesota
through north central Wisconsin, but conditions will improve later
tonight.

Heavy snow will start to taper off late this afternoon over portions
of southeast Minnesota through north-central Wisconsin. Further
to the south mainly drizzle or perhaps a few flurries are expected
for much of the evening hours. The deformation band of snow is
then expected to edge back into southeast Minnesota and eventually
western Wisconsin late tonight. Additional snowfall of 1 to
perhaps 3 inches is possible through tonight mainly from Dodge
County northeast into norther sections of Wabasha, Trempealeau,
and Clark Counties. Further south any additional snow
accumulations will be less that 1 inch all the way through the
overnight. Ice will be lost aloft across much of the areas except
within the deformation band. We could see some light freezing
drizzle this evening before a switch over to very light snow. Any
ice accumulation will be light, around a glaze. The storms system
will exit the region early on Tuesday. Cooler temperatures build
back into the region on Tuesday with highs mainly in the 20s.

.LONG TERM...(Tuesday night through Monday)
Issued at 334 PM CST Mon Jan 22 2018

Weak high pressure builds into the region Tuesday night into
Wednesday. Plan on lows in the single digits to teens. Another
trough dives into the western CONUS on Thursday with warm southerly
flow setting up across the region for Friday. Friday will be an
seasonably warm day across the region with highs in the 40s,
possibly creeping into the 50s. A weak cold front sweeps through
the region Friday night bringing a chance of rain or possibly a
rain/snow mix to the region. Cooler northwest flow sets up across
the region late this weekend into early next week. A weak
shortwave moving through Sunday afternoon could bring some light
snow to the region.

&&

.AVIATION...(For the 06Z TAFS through 06Z Tuesday night)
Issued at 1105 PM CST Mon Jan 22 2018

Cigs: expecting around 1 kft or less to hold fast at the TAF sites
through Tue, with potentially some improvement Tue evening. That
could be short lived as another shortwave trough is progged to drop
across the region Tue night. More ifr/mvfr favored by both the NAM
and GFS with this feature.

WX/vsby: band of snow to slide east across the TAF sites through the
overnight, weakening and diminishing in intensity and areal coverage
by 12z Tue. More restrictions in vsby in snow at KRST than KLSE, but
mostly MVFR (period of IFR possible early KRST).

Winds: tight pressure gradient persists into Tue afternoon, and
winds will stay stiff through then. Some weakening late in the day,
and then generally light Tue night under the influence of weak high
pressure.


&&

.HYDROLOGY...Through Tuesday
Issued at 348 PM CST Mon Jan 22 2018

Minor flooding across portions of northeast Iowa into far
southwest Wisconsin due to ice jamming. Rainfall amounts of 0.75
to 1.4 inch fell across these areas last night into early this
morning. The rain fell on frozen ground leading to a lot of
runoff and ponding. Be alert for rising river levels and possible
ice jam flooding. Ponding of water will continue in poor drainage
areas.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...Winter Storm Warning until midnight CST tonight for WIZ017-029-
     032>034.

     Winter Weather Advisory until midnight CST tonight for WIZ041-
     042.

MN...Winter Storm Warning until midnight CST tonight for MNZ079-
     086>088-094-095.

     Winter Weather Advisory until midnight CST tonight for MNZ096.

IA...Winter Weather Advisory until midnight CST tonight for
     IAZ008>010.

&&

$$

SHORT TERM...Wetenkamp
LONG TERM...Wetenkamp
AVIATION...Rieck
HYDROLOGY...Wetenkamp


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.