Area Forecast Discussion
Issued by NWS Sioux Falls, SD

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FXUS63 KFSD 110436

Area Forecast Discussion
National Weather Service Sioux Falls SD
1036 PM CST Sat Feb 10 2018

.SHORT TERM...(This evening through Sunday)
Issued at 300 PM CST Sat Feb 10 2018

Quiet weather ahead to finish the weekend. Abundant sunshine today
has not really helped warm the surface air mass under a strong
arctic high pressure with temperatures inly in the single digits. A
weak system will move through Nebraska this evening and could bring
some flurries or patchy light snow to the Sioux City area, but not
expecting accumulations. Otherwise fairly clear with high pressure
shifting south. This should keep some wind through the night,
especially north of Interstate 90. Regardless, it will be cold with
lows of 5 to 10 below. With the wind we will touch 20 below on the
wind chill but not going to issue an advisory.

While Sunday will not be as cold as today, highs will still be about
10 degrees below normal, ranging from the teens in northwest IA to
the mid 20s in south central SD.

.LONG TERM...(Sunday night through Saturday)
Issued at 300 PM CST Sat Feb 10 2018

Sunday night into Monday will see a reinforcing shot of Arctic
air as a northwest flow upper level wave drops southeast. Lows
will be back below zero again with highs of about 10 to 15

By Monday night into Tuesday warm advection is expected to develop
ahead of some warmer air aloft. This may bring some light snow to
the area but timing challenges and marginal confidence will still
keep lower chances in place.

Upper level flow will turn west northwest Wednesday through
Saturday which will keep temperatures a little warmer, but still
mainly below normal. The exception will be on Wednesday where above
normal temperatures will be possible as warm air aloft spreads
through. One caveat to this will be the potentials for fog as the
inversion strengthens which would limit temperatures a bit.
Otherwise highs Thursday through Saturday in the 20s with lows about
5 to 15.


.AVIATION...(For the 06Z TAFS through 06Z Sunday night)
Issued at 1035 PM CST Sat Feb 10 2018

VFR through the TAF period.




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