Area Forecast Discussion
Issued by NWS Rapid City, SD

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FXUS63 KUNR 160914

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
214 AM MST Mon Jan 16 2017

.SHORT TERM...(Today Through Tuesday Night)
Issued at 212 AM MST Mon Jan 16 2017

09z surface analysis had weak trough/cold front from north
central ND into eastern WY. Upper low spinning over western OK
pushing a band of mixed precipitation to the SD border in south
central SD. Shortwave trough moving across MT will push cold front
southeast through the CWA this morning. It will bring a few breezy
spots along with weak cold air advection and a change to all snow
over far southeast portions of the CWA. Inconsequential
accumulations foreseen. Temperatures will be cooler over the
higher terrain today, but slightly warmer over the plains given
boundary layer mixing.

Tonight and Tuesday, upper ridge builds into the CWA with lovely
warm air advection. Readings over deeper snow cover will be lower
than potential, but still a nice respite from recent arctic air.

.LONG TERM...(Wednesday Through Sunday)
Issued at 212 AM MST Mon Jan 16 2017

Upper ridging will remain across the region Wednesday and
Thursday bringing the warmest days of the week. Temps are expected
to reach the 40s and 50s...and can`t rule out upper 50s across
downsloping parts of the northern and eastern foothills. Dry
weather is expected during this period. Cyclonic flow will develop
for the end of the week into the weekend. This will bring cooler
temps to the area and better chances for precip. Even with this
trough developing...pops will be minimal as the best dynamics
appear to stay south of the region. Temperatures will return to
more seasonable levels.


.AVIATION...(For the 12Z TAFS Through 12Z Tuesday Morning)
Issued At 212 AM MST Mon Jan 16 2017

MVFR/IFR conditions may reach portions of south central SD this
morning should light snow reach that area. Otherwise VFR
conditions are expected through the forecast period.




SHORT TERM...Helgeson
AVIATION...13 is the U.S. government's official web portal to all federal, state and local government web resources and services.