Area Forecast Discussion
Issued by NWS Rapid City, SD

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FXUS63 KUNR 221131

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
531 AM MDT Sat Apr 22 2017

.SHORT TERM...(Today Through Sunday Night)
Issued at 333 AM MDT Sat Apr 22 2017

Upper level analysis has a rex block across the central CONUS with
ridging across the Great Basin area. Skies are partly to mostly
cloudy across the Northern Plains with the light shower activity
diminished over the last two hours. At the surface, weak high
pressure is located across the Dakotas. Temperatures at 3 am are
in the 30s and low 40s with light and variable winds.

An upper ridge will bring mild weather for the weekend. Other than
some light showers over the Hills this afternoon, conditions will
be dry until the next system moves in Sunday night. Highs will be
in the upper 50s to upper 60s today, warming to the mid 60s to
mid 70s on Sunday. Upper flow will become southwesterly by Sunday
night ahead of the approaching trough, and southwesterly winds
will become breezy across south central SD on Sunday.

.LONG TERM...(Monday Through Friday)
Issued at 333 AM MDT Sat Apr 22 2017

Unsettled weather returns for the upcoming week as a series of
shortwaves begins to cross the region. Daily chances for rain and
rain showers are expected in most areas. Colder air could bring
some overnight/early morning snow to higher elevations depending
on the timing of the systems. At this point, the best windows for
wide spread precipitation look to be Monday night into Tuesday
morning, and again Wednesday night into Thursday. Near average
temperatures are expected for Monday, with below average highs in
the 40s and low 50s for the rest of the week.


.AVIATION...(For the 12Z TAFS Through 12Z Sunday Morning)
Issued At 526 AM MDT Sat Apr 22 2017

Low clouds will linger in the Black Hills and across northeastern
Wyoming this morning creating areas of MVFR/IFR ceilings and
visibilities. Clouds will lift and the fog will burn off by mid
morning. Isolated showers are possible this afternoon across the
Black Hills. Otherwise, expect VFR conditions to prevail.




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