Area Forecast Discussion
Issued by NWS Sioux Falls, SD

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FXUS63 KFSD 271730

Area Forecast Discussion
National Weather Service Sioux Falls SD
1230 PM CDT Mon Mar 27 2017

.SHORT TERM...(Today and Tonight)
Issued at 308 AM CDT Mon Mar 27 2017

While we`ll still be dealing with cloud cover today, it`s promising
that most areas will see sun to start the new work week.   Stratus
lingering over the CWA this morning will hold on into the mid-day
hours, but will slowly dissipate through the afternoon. There
remains a few areas where fog has developed this morning as skies
temporarily cleared. Limited coverage however, has not warranted any
advisory at this time.

Mid-level clouds associated with a shortwave moving through the
Dakotas early today will linger across the region into the afternoon
hours. With the thinning stratus and a bit more cloud cover,
temperatures should finally climb back into the 50s in most areas.

Light winds and partly cloudy skies persist overnight. Winds will be
quite light once again, but with clouds hanging around, temperatures
may only cool towards the lower to middle 30s.

.LONG TERM...(Tuesday through Sunday)
Issued at 308 AM CDT Mon Mar 27 2017

The focus in the medium range continues to be on the two slow moving
systems that affect the region mid-week and then again next weekend.
Water vapor shows the first of the two systems currently along the
west coast.  This system is expected to deepen and shift east into
the plains on Wednesday.  Models have come into better agreement on
the track of this system, and it appears that the forecast area will
be on the northern edge of the precipitation shield.  Have kept the
pops fairly high along and south of I-90 with this system, with much
lower pops to the north. With cold core system, expect temperatures
to remain below normal on Wednesday and Thursday.  As the
precipitation shifts east on Thursday, will see temperatures start
to rebound as skies partially clear.

Surface ridge builds into the Northern Plains Thursday night into
Friday morning ahead of a second large upper level low that works
into the plains over the weekend.  This system seems to favor a
slightly more southerly track compared to the first system, making
precipitation far from certain this far north. Still appears as
though this system will try and link with northern stream energy,
but influence of the northern stream wave still seems to be a little


.AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon)
Issued at 1227 PM CDT Mon Mar 27 2017

KSUX at Sioux City should gradually erode their MVFR ceiling
afternoon. Otherwise KFSD and KHON will likely remain VFR this
afternoon and evening. Reformation of fog could occur again
tonight. At this time, there could be fog development actually
between Sioux Falls and Sioux City very late tonight and early
Tuesday. Sioux Falls being on the northern edge of the fog could
experience some MVFR visibility for a short time early Tuesday.




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