Area Forecast Discussion
Issued by NWS Rapid City, SD

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000
FXUS63 KUNR 112313
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
413 PM MST Sat Nov 11 2017

.DISCUSSION...(This Evening Through Saturday)
Issued at 112 PM MST Sat Nov 11 2017

Water vapor shows upper trof working through the Rockies into the
Plains, with distinct short wave along the MT/WY border. Some pcpn
falling across North Central WY as far east as about KSHR. Cold
front has passed through most of our NE WY zones with surface low
near Lusk.

Short wave/cold front will advance eastward across the region this
evening with some associated light rain/snow showers, ending
across our eastern zones around midnight. QPF should remain
light. Some fog development possible across NE WY per hi-res
models.

Very mild and dry air expected early this week with flat upper
ridge overhead. Most areas will reach well into the 50s on Monday
with some 60s east/south of the Black Hills. Next weak upper trof
works through the Northern Plains on Tuesday with breezy NW winds,
but moisture will be quite limited. This will knock temps down a
few degrees for midweek although still above average. Another trof
will then work through in the late Thursday/Friday time frame,
with possibly a bit more moisture with it although nothing
significant expected. Temps will remain mild into next weekend
with little pattern change into the foreseeable future.

&&

.AVIATION...(For the 00Z TAFS Through 00Z Sunday Evening)
Issued At 409 PM MST Sat Nov 11 2017

Light rain showers (possibly mixed with snow) will continue to move
east across the area this evening. Mainly VFR conditions are
expected, with some local MVFR conditions in showers. A weak cold
front is expected to cross mainly northeast WY this evening. IFR
conditions and fog will be possible through the night into early
Sunday morning, mainly around the WY Black Hills and adjacent
plains.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...None.
WY...None.
&&

$$

DISCUSSION...Johnson
AVIATION...JC



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