Area Forecast Discussion
Issued by NWS Rapid City, SD

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FXUS63 KUNR 122121

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
221 PM MST Mon Feb 12 2018

.DISCUSSION...This Evening Through Monday
Issued at 159 PM MST Mon Feb 12 2018

Small band of snow continues to move northward across northwestern
SD into ND and should exit forecast area by late afternoon. Cold
surface high pressure remains over MN with cold air advection
continuing over western SD as temperatures have reached only
single digits to lower teens. Another wave moving toward the
area on southwest flow aloft may produce light snow acrosss
southern SD this evening, with snow diminishing after midnight. As
cutoff low retrogrades off the coast of southern CA, upper flow
will become northwest to zonal and skies will clear early Tues.
Southeast winds will increase as warm air advection develops,
although temperatures will be limited by snow cover. Next cold
front sweeps across the northern Plains Thursday with some light
snow and gusty winds.


Issued At 159 PM MST Mon Feb 12 2018

Areas of MVFR conditions will continue into the evening, mainly
over northeast Wyoming, the Black Hills and northwestern South
Dakota, with local IFR conditions possible near the Black
Hills. Conditions will improve overnight as snow ends, with VFR
conditions expected tonight.




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