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fxus63 kfsd 160941 

Area forecast discussion
National Weather Service Sioux Falls South Dakota
341 am CST Mon Dec 16 2019

Short term...(today and tonight)
issued at 337 am CST Mon Dec 16 2019

Very quiet forecast from the next seven days with dry
forecast expected. Patches of stratus is expected to shift south and
east throughout the day today leading to partial clearing, but weak
flow and snow cover should limit mixing. Have forecast highs mainly
in the 20s today.

Weak west to east winds remain tonight. Clouds could hang tough
east of I-29, while better clearing develops across South Dakota
overnight. Lows will generally be in the teens.

Long term...(tuesday through sunday)
issued at 337 am CST Mon Dec 16 2019

West to northwest flow aloft remains through mid week, but with the
jet positioned well to the south of the forecast area, will be a
struggle to warm substantially. Have nudged temperatures up a bit
closer to mean amongst the various model solutions, as the National
blend has been erring on the cool side of things as of late. Weak
cool front works through the area Tuesday afternoon with the crux of
the cooling focused to the east across the upper Midwest. Potential
for a cool night across the area on Tuesday night, however, models
are suggesting a fair amount of high clouds across the area Tuesday
night limiting cooling potential.

Northern branch of the upper level jet tries to reestablish across
the northern plains, mainly north of the forecast area. A weak and
very moisture starved trough works through the region Thursday night
into Friday morning, otherwise, upper level ridging should lead to
continued dry conditions. With low level flow out of the south or
west, expect temperatures to return to at or above normal levels.
Potential for fog with melting snow cover late in the week, but will
work on timing as time draws near.


Aviation...(for the 06z tafs through 06z Monday night)
issued at 1035 PM CST sun Dec 15 2019

The main concerns for this set of tafs are areas of fog and low
clouds/stratus developing over the region. Stratus currently over
east-central South Dakota will continue to move east-southeast into the
I-29 corridor overnight into Monday morning. This will result in
MVFR to IFR conditions persisting through most of the day.
Additionally, areas of fog are expected to develop along the
Missouri River into northwest Iowa, where IFR to occasional LIFR
conditions are possible.


Fsd watches/warnings/advisories...
South Dakota...none.


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