Area Forecast Discussion
Issued by NWS Sioux Falls, SD

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FXUS63 KFSD 081744
AFDFSD

Area Forecast Discussion
National Weather Service Sioux Falls SD
1144 AM CST Fri Dec 8 2017

.SHORT TERM...(Today and Tonight)
Issued at 302 AM CST Fri Dec 8 2017

Warming thermal profiles will lead to much milder temperatures for
today, with highs climbing a good 10 degrees over Thursday. This
will play out to readings around 30 from the Interstate 29 corridor
and eastward, to near 40 over south central SD. It will be a cloudy
day with models in agreement on low clouds to the north streaming
southward across the area. It will also become breezy in the
afternoon in a tightening gradient as surface low pressure winds up
over the Upper Mississippi Valley. Related to that, the upper level
energy drops through MN and IA by this evening, and while the better
forcing with this system remains to our east, cannot rule out a few
flurries over our far southwestern MN zones. Lows tonight will again
be in the teens to lower 20s.

.LONG TERM...(Saturday through Thursday)
Issued at 302 AM CST Fri Dec 8 2017

Colder air will be drawn in behind the aforementioned system, and
highs on Saturday will notch down to the mid 20s from east central
SD into portions of northwestern IA, but remaining in the upper 30s
over south central SD. Sunday looks to be the mildest day of the
next several under a strong warm air advection regime, and highs
climbing into the 40s to lower 50s.

The uneventful weather continues into the longer range with our area
remaining in a northwesterly upper level flow through the period.
Another vort max slides across the region on Monday, and while a
risk of light precipitation cannot be ruled out, model consensus
keeps it primarily dry. Did boost wind speeds closer to CONSMOS for
Monday afternoon with Superblend guidance a little on the low side.
Temperatures through next week remain just above normal with highs
30s to lower 40s and lows in the upper teens to mid 20s.

&&

.AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon)
Issued at 1144 AM CST Fri Dec 8 2017

MVFR-locally IFR stratus will linger across the forecast area
through the afternoon. The stratus is expected to gradually erode
west of I-29 through the afternoon, allowing for a period of VFR
conditions near/west of the I-29 corridor this evening. However,
models pointing to the MVFR ceilings building back into at least
KFSD after 04Z.

&&

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

$$

SHORT TERM...JM
LONG TERM...JM
AVIATION...JH



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