Area Forecast Discussion
Issued by NWS Rapid City, SD

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FXUS63 KUNR 090516

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
1016 PM MST Fri Dec 8 2017

.DISCUSSION...(This Evening Through Friday)
Issued at 219 PM MST Fri Dec 8 2017

Strong upper ridging persists across the western CONUS with deep
upper trough across the eastern half of the country. Surface low
sits over northern MN with a strong pressure gradient continuing
across western SD. Winds across the area are generally northwest 20
to 30 mph with gusts to 40 mph. The exception is across the plains
just east of the Black Hills where winds obs show 25 to 40 mph with
gusts up to 55 mph. Winds will decrease over the next two hours as
the overnight inversion begins to set up. Upper ridging over the
next several days will move very little...resulting in not much
change in the weather pattern through much of next week. The
baroclinic zone will stay east of the area with temperatures
generally in the 40s to near 50. However warmer temps are still
progged to push into the region through Saturday and Sunday...with
highs in the 50s (possibly even low 60s Sunday). Winds will also be
persistent through the next several days. Breezy northwest winds
will continue through the weekend. A clipper system will cross the
area Monday driving in colder temps in the 30s and 40s...along with
strong northwest winds. It looks like winds Monday could reach
advisory criteria...and possibly high wind warning. Will have to
keep an eye on models trends for that system. Rest of the week will
be quiet with highs in the 40s and not-as-breezy winds. Next chance
for snow showers will be toward the end of the work week.


.AVIATION...(For the 06Z TAFS Through 06Z Saturday Night)
Issued At 1012 PM MST Fri Dec 8 2017

Gusty west/northwest winds will continue through the period, esp
around the eastern Black Hills. Otherwise, VFR conditions will




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