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Area forecast discussion for western South Dakota and northeastern Wyoming 
National Weather Service Rapid City South Dakota
1127 am MDT Monday Mar 30 2015

Short term...today through Tuesday night
issued at 240 am MDT Monday Mar 30 2015

Current surface map places weak trough across the western Dakotas.
Warm and dry the next couple of days...with fire weather the main
concern.

Upper level ridge builds across the northern plains today...and
remain across the area for Tuesday. Temperatures near high end of
guidance. Gusty northwest winds across the South Dakota plains
today...with gusty southwest winds across northeast Wyoming for
Tuesday.

Long term...Wednesday through Sunday
issued at 240 am MDT Monday Mar 30 2015

A strong shortwave trough will cross the northern
plains on Wednesday...but moisture is very limited...and little
precipitation is expected. A surface cold front will accompany this
upper disturbance...bringing slightly cooler temperatures and gusty
northwest winds to the area. A secondary trough will cross the
Central Plains towards the end of the week. Model solutions now
showing the best band of rain/snow south of the forecast
area...across southern Wyoming...northern Colorado...and Nebraska.
Highs for the end of the week will

&&

Aviation...for the 18z tafs through 18z Tuesday
issued at 1126 am MDT Monday Mar 30 2015

VFR conditions will continue through Tuesday morning. Northwest
wind of 15 to 25 knots...with higher gusts...will continue through
the afternoon from northwest to south central South Dakota...including krap.

&&

Fire weather...
issued at 240 am MDT Monday Mar 30 2015

Deep mixing will allow gusty northwest winds to develop on the
western South Dakota plains north and east of the Black Hills.
With minimum relative humidity of 15-20 percent and 20-30 miles per hour
winds...grassland fire danger index is in the extreme category.
Will issue red flag warning for South Dakota fire zones
261-264-265-266.

Warmer temperatures for Tuesday...with minimum relative humidity
of 10 to 15 percent. Gusty southwest winds will develop across northeast
Wyoming. With combination of very low humidity and gusty
winds...will issue red flag watch Tuesday for Wyoming fire zones
259-297-298. Grassland fire danger index will be in the extreme
category for western and south central South Dakota on Tuesday.

&&

Unr watches/warnings/advisories...
South Dakota...red flag warning until 7 PM MDT this evening for sdz261-264>266.

Wyoming...Fire Weather Watch from Tuesday afternoon through Tuesday
evening for wyz259-297-298.

&&

$$

Short term...7
long term...15
aviation...26
fire weather...7

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