Area Forecast Discussion
Issued by NWS Rapid City, SD

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FXUS63 KUNR 140654
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
1154 PM MST Mon Nov 13 2017

.UPDATE...
Issued at 824 PM MST Mon Nov 13 2017

Upper ridge cresting over northern Plains this evening with a
thick band of cirrus moving over forecast area ahead of upper trof
along Pacific coast. Lee trof along front range of Rockies-Big
Horn Mtns has southerly winds ahead of it. Temperatures should
remain mild overnight with cloud cover and winds keeping air
mixed. Trof will cross forecast area after midnight, with cool
front entering northwest SD early Tuesday morning.

&&

.DISCUSSION...Tuesday Through Monday
Issued at 141 PM MST Mon Nov 13 2017

Cool front moving through on Tuesday with very limited moisture
so precip not expected, but breezy northwest winds expected. Some
temps well into the 60s possible south/east of the Black Hills
ahead of the cool front. Upper ridge rebuilds for
Wednesday/Thursday, with elevated fire weather conditions expected
Thursday given very dry and gusty southwest winds and low rh`s
ahead of a cold front. Cooler conditions with gusty northwest
winds then expected on Friday behind the cold front. Could be some
light rain/snow showers late Thursday and Friday, but moisture
will remain limited. Upper ridge then rebuilds for the weekend.

&&

.AVIATION...(For the 06Z TAFS Through 06Z Tuesday Night)
Issued At 1152 PM MST Mon Nov 13 2017

VFR conditions are expected through the period. Westerly winds
will be gusty at times.

&&

.FIRE WEATHER...
Issued at 141 PM MST Mon Nov 13 2017

A cool front will cross the region early Tuesday. Ahead of the
front, there could be a period of dry Chinook winds along the
eastern foothills of the Black Hills overnight. Breezy northwest
winds with minimum RH`s down into the 20s expected on Tuesday.
Slightly cooler weather expected Wednesday. Thursday looks warm,
dry, and windy with southwest winds bringing elevated fire
conditions to the region. Gusty northwest winds will bring cooler
conditions for Friday. Chances for wetting rains will remain low
through the week.

&&

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

$$

Update...55
DISCUSSION...Johnson
AVIATION...Pojorlie
FIRE WEATHER...Johnson



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