Area Forecast Discussion
Issued by NWS Rapid City, SD

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FXUS63 KUNR 120946

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
246 AM MST Sun Nov 12 2017

.DISCUSSION...(Today Through Saturday)
Issued at 235 AM MST Sun Nov 12 2017

Current surface map places high pressure across the eastern
Dakotas. Area of fog from southwest South Dakota around the west
side of the Black Hills into northwest South Dakota. Fog will
dissipate this morning with mostly sunny skies. Temperatures
similar to yesterday.

Warm and dry conditions expected early this week with flat upper
ridge overhead. Most areas will reach well into the 50s/lower 60s
on Monday. Next weak upper trof works through the Northern Plains
on Tuesday with breezy west-northwest winds. Moisture is limited,
but a few isolated showers possible across portions of northeast
Wyoming into northwest South Dakota. Another trof will then work
through the area late Thursday/Friday. Breezy west winds with
lower relative humidity on Thursday will result in elevated fire
conditions. Some rain/snow showers possible with the trof, but
precipitation amounts will be light. Temps will remain above
average into the weekend.


.AVIATION...(For the 06Z TAFS Through 06Z Sunday Night)
Issued At 1041 PM MST Sat Nov 11 2017

Scattered light rain and snow showers will lead to localized MVFR
visibilities across southwest/south central SD over the next few
hours. These should exit the area by 12z, giving way to VFR
conditions for the remainder of the period across western SD.
Subsidence and drying across northeastern WY will lead to gradual
erosion of reduced visibilities and ceilings through the early
morning hours. VFR conditions should prevail across all areas
around daybreak and continue through the remainder of the period.




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