Area Forecast Discussion
Issued by NWS Rapid City, SD

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144
FXUS63 KUNR 221731
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
1131 AM MDT Mon Apr 22 2019

.DISCUSSION...(Today Through Sunday)
Issued at 341 AM MDT Mon Apr 22 2019

Upper level analysis has strong shortwave shifting east of the
area with ridging off the West Coast. Another weak closed low is
spinning across the Desert Southwest. Skies are mostly cloudy
across the Northern Plains with some light rain and rain showers
across south central SD at the moment. At the surface, low
pressure is located across western Iowa and high pressure has
settled across Montana. Temperatures at 4am are in the 30s and 40s
with light and variable winds.

Upper shortwave over eastern Nebraska will continue to shift east
today, with precip over south central SD diminishing through the
rest of the morning. Mostly cloudy skies should become partly
sunny across far northern SD by late morning, with partly sunny
conditions working south through the day. High temperatures will
be near seasonal averages, in the 50s to lower 60s. Skies will
continue to clear late today into tonight, with surface high
pressure settling into the area. Lows will fall into the 30s.

Ridging shifts into the Northern Plains for midweek as upper low
slides across the Desert Southwest. Dry conditions are expected
through early Wednesday afternoon with temperatures rising to
above average levels. Shortwave energy in west to northwest flow
will squash the ridge and allow for near daily chances for showers
and a few thunderstorms to cross the area late in the week.
Temperatures will cool slightly towards the end of the week with
the active flow. Near average temperatures and the active weather
pattern will persist into the weekend.

&&

.AVIATION...(For the 18Z TAFS Through 18Z Tuesday)
Issued At 1129 AM MDT Mon Apr 22 2019

Local MVFR ceilings will be found across portions of northeast
Wyoming and the Black Hills this afternoon.  Isolated showers are
possible over and near the Black Hills this afternoon. Otherwise
VFR conditions are expected.

&&

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

$$

DISCUSSION...15
AVIATION...7



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