Area Forecast Discussion
Issued by NWS Rapid City, SD

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FXUS63 KUNR 120921

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
221 AM MST Thu Jan 12 2017

.SHORT TERM...(Today Through Friday Night)
Issued at 222 AM MST Thu Jan 12 2017

Current surface map places high pressure across eastern South
Dakota into eastern Nebraska. Area of low pressure across southern
Manitoba, with reinforcing arctic cold front into northeast
Montana and southwest North Dakota. Arctic front slips into
northwest South Dakota today with a period of gusty northwest
winds. Some patchy blowing snow expected behind the front. Core of
cold air shifts eastward tonight, with low level warm advection
across the forecast area. Some light snow possible tonight across
southwest and south central South Dakota. Warmer on Friday with
some 30s in the Black Hills. However, much of northwest South
Dakota will remain in the teens.

.LONG TERM...(Saturday Through Wednesday)
Issued at 222 AM MST Thu Jan 12 2017

Temperatures will continue to warm gradually in the
absence of the arctic airmass, aided by southwesterly low-level
winds. Dry weather is also expected through the middle of next week.
A low pressure system will shift into the northern plains early next
week, but models continue to keep precipitation south and east of
the CWA.


.AVIATION...(For the 12Z TAFS Through 12Z Friday Morning)
Issued At 222 AM MST Thu Jan 12 2017

VFR conditions are expected through this evening. Some
MVFR ceilings/visibility will be possible in light snow from
southwestern into central SD, mainly after midnight.


SD...Wind Chill Advisory until 11 AM MST this morning for SDZ001-002-



LONG TERM...Pojorlie
AVIATION...Pojorlie is the U.S. government's official web portal to all federal, state and local government web resources and services.