950 
FXUS63 KFSD 102323
AFDFSD

Area Forecast Discussion
National Weather Service Sioux Falls SD
523 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 
degrees. 

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 00Z TAFS through 00Z Sunday evening)
Issued at 520 PM CST Sat Feb 10 2018

VFR conditions through the TAF period. 

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...None.
MN...None.
IA...None.
NE...None.
&&

$$

SHORT TERM...08
LONG TERM...08
AVIATION...05