Area Forecast Discussion
Issued by NWS Rapid City, SD

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FXUS63 KUNR 161703

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
1003 AM MST Tue Jan 16 2018

Issued at 1001 AM MST Tue Jan 16 2018

Wind chill temperatures continue to slowly improve late this
morning. Per collaboration with neighbors will drop the wind
chill headlines. Readings from zero to -20F expected through early
afternoon over the plains east of the Black Hills, so still


.DISCUSSION...(Today Through Monday)
Issued at 235 AM MST Tue Jan 16 2018

Current surface map shows arctic high across the eastern Dakotas.
Clear skies across the forecast area with very cold temperatures,
with teens below zero across northwest South Dakota. For today,
high will drop southeast with return flow across the forecast
area. Highs will climb into the 30s for portions of northeast
Wyoming and the Black Hills, while highs only get into the teens
for northwest South Dakota.

Fast moving shortwave will move along the Canadian border
Wednesday with upper level ridge shifting into the northern plains
Thursday. Warm and dry conditions expected Wed-Thur with
temperatures 10-15F above average. May be some light precipitation
across northeast Wyoming late Friday.

Upper trof crosses the Rockies and into the plains for the
weekend. This will result in cooler temperatures for the
weekend. Models still remain uncertain with strength/track of
upper low with ensemble members show wide spread in precipitation


.AVIATION...(For the 12Z TAFS Through 12Z Wednesday Morning)
Issued At 341 AM MST Tue Jan 16 2018

VFR conditions are expected through the forecast period.




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