Area Forecast Discussion
Issued by NWS Rapid City, SD

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FXUS63 KUNR 192314
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
514 PM MDT MON SEP 19 2016

.SHORT TERM...(This Evening Through Tuesday Night)
Issued at 301 PM MDT Mon Sep 19 2016

Water vapor shows zonal flow acrs the nrn tier with an embedded
short wave moving into the nrn rockies. At the sfc...a high is
located over wrn SD.  Mostly sunny skies and warm temps acrs the
cwfa early this aftn.

Tonight...aforementioned short wave may bring a few -shra to areas
of north of I-90.  A sfc low developing in response to the short
wave will track ewd acrs ern WY and wrn SD and may bring a period
of gusty south winds late tonight across swrn/scntrl SD.

Tuesday...Upper ridge will amplify slightly into the nrn plains
behind the departing short wave. This will allow temps to warm
another 5 to 10 degrees from today...with some readings into the 90s
south and east of the Blkhls.  Dry conditions expected through the
day...but another short wave may bring a few overnight -shra to
nwrn SD.

.LONG TERM...(Wednesday Through Monday)
Issued at 301 PM MDT Mon Sep 19 2016

Surface low over NE with ridging pushing south across SD gives
much of forecast area easterly flow Wed, which could mean cooler
temperatures and some localized showers, especially along the
eastern foothills. Upper low deepens over Pacific NW Wed and
Thurs, with southwest flow over the western U.S. bringing moisture
and increasing precipitation to the forecast area. Low tracks
northeastward into the northern Plains, with showers continuing
through Saturday. Upper ridge builds Sunday for a return of warmer
and drier conditions.

&&

.AVIATION...(For the 00Z TAFS Through 00Z Tuesday Evening)
Issued At 512 PM MDT Mon Sep 19 2016

vfr conds expected through the period. another weak impulse will
bring sct-isold showers across the northern half. an isold ts is
also possible this evening over ne wy.

&&

.UNR Watches/Warnings/Advisories...
SD...None.
WY...None.
&&

$$

SHORT TERM...Johnson
LONG TERM...55
AVIATION...JC



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