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Area forecast discussion for western South Dakota and northeastern Wyoming 
National Weather Service Rapid City South Dakota
500 PM MDT Monday Sep 15 2014

Short term...this evening through Tuesday night
issued at 138 PM MDT Monday Sep 15 2014

Fair weather is expected to persist through the short term. The
latest water vapor and 500-mb heights show a rather Sharp Ridge
over the western Continental U.S....with a broad/large trough over the eastern Continental U.S..
this pattern will change little the next two days as the ridge
translates very slowly eastward. Northwest flow downstream of the ridge
will bring only some middle/high clouds across the forecast area. The
exception could be some patchy fog over far southern areas of the County Warning Area
late tonight/Erly Tuesday morning where fog was present this morning.
However...expect the winds to be bit stronger tonight with more blyr
mixing as the surface high pressure moves southeast. Warm advection also
will occur overnight and Tuesday...with temperatures about 5-10 degrees
higher than today. Dry weather is expected through at least 12z
Wednesday.

&&

Long term...Wednesday through Monday
issued at 138 PM MDT Monday Sep 15 2014

An upper level ridge of high pressure will build across the
western Continental U.S. Through Thursday...bringing dry conditions and near
to above average temperatures. Upper ridge axis slides across the
County Warning Area and begins to break down on Thursday. With thermal ridge over
the area...will see the warmest temperatures of the week. A weak upper
trough and cool front will slide through the northern plains late
Thursday into Friday. This will bring slightly cooler temperatures
and a chance for showers and thunderstorms Friday into early
Saturday. The western ridge then reforms and builds again on
Sunday...resulting in dry conditions for the forecast area into
early next week.

&&

Aviation...(for the 00z tafs through 00z Tuesday evening)
issued at 459 PM MDT Monday Sep 15 2014

VFR conditions are expected through the forecast period.

&&

Unr watches/warnings/advisories...
South Dakota...none.
Wyoming...none.
&&

$$

Short term...bunkers
long term...mls
aviation...Johnson

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