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Area forecast discussion
National Weather Service Sioux Falls South Dakota
534 am CST Fri Nov 24 2017

Short term...(today and tonight)
issued at 302 am CST Fri Nov 24 2017

Today starts out quite mild, as light south winds keep overnight
lows well above freezing. A dry cold front will begin moving through
the region during the late morning hours. This will bring widespread
25 to 30 mph winds during the afternoon, gusting 40 to 45 mph at
times, which is plenty to blow over trash cans and other loose
objects. Along with the winds, humidities will be low, leading to
elevated fire danger, especially west of the James River. Some
mid-level cloud cover is possible with the front, but a dearth of
moisture will mean no precipitation is expected. Winds decrease
quickly around sunset as the boundary layer decouples.

Long term...(saturday through thursday)
issued at 302 am CST Fri Nov 24 2017

The weekend and week ahead continue to look mostly dry. An upper
level ridge builds for the weekend, keeping mostly clear skies and
above average temperatures. Monday looks like another exceptionally
warm day similar to Thanksgiving day, with mostly clear skies and
strong southerly warm advection. Another cold front moves through
Tuesday, bringing breezy northwest winds. A cutoff low pressure
migrates south of the area Wednesday, with most models keeping
precipitation south of the area with this system; a few bring rain
as far north as Sioux City, so this is Worth keeping an eye on for
those with plans mid-week.

For the end of the work week, a trough of low pressure will advect
cooler Canadian air in from the northwest, decreasing temperatures
closer to seasonal values, with highs Thursday and Friday in the
40s and lows in the 20s.

&&

Aviation...(for the 12z tafs through 12z Saturday morning)
issued at 533 am CST Fri Nov 24 2017

Winds will shift from southerly and southwesterly to northwesterly
later this morning as a cold front moves through the region.
Sustained winds speeds increase with the front to 20-25 kt with
gusts to 35-40 kt. These winds will be strongest in the 24/1800z to
24/2300z timeframe, quickly decreasing after sunset. Some mid-level
cloud cover is likely with the front, but precipitation chances look
to be very low, with a dry lower atmosphere. Sites such as Huron and
Brookings along the Hwy 14 corridor and northward are the locations
that have the best chance for a sprinkle through the am hours.

&&

Fsd watches/warnings/advisories...
South Dakota...none.
Minnesota...none.
Iowa...none.
NE...none.
&&

$$

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