559
FXUS63 KUNR 221901
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
101 PM MDT Sun Sep 22 2024

.KEY MESSAGES...

-Warming back up this week with little to no precipitation expected
 other than some sprinkles/showers Monday

&&

.DISCUSSION...(This Evening Through Sunday)
Issued at 1259 PM MDT Sun Sep 22 2024

Fairly quiet pattern this week as the western NOAM ridge rebuilds
and supports warmer temps with mainly dry weather. The only
exception will be a passing upper trough and cool front Monday,
which could support some isolated showers. Sfc high exiting the
region this afternoon with SE return flow increasing across the
region. Upper trough will advect into the region Monday and
support increasing clouds and a few showers. This system will be
fighting a lot of dry air, but will have a enough lift to support
isolated afternoon showers/sprinkles across the SD plains. Any
precip amounts will be very light. Cool front will shift through
the region in the afternoon, supporting a period of breezy NW
winds, esp on the NW SD Plains. After Monday, mean ridging can be
expected through the rest of the week with temps trending above
normal. Temps will be back in the 80s (few 90s) most places by the
middle of the week, under dry conds. The pattern then becomes
muddled by the end of next weekend as a potent upper trough moves
into southern Canada, with a plethora of different solutions as to
how this system evolves, all likely hinging on the location of
the expected closed upper low over the SE CONUS.

&&

.AVIATION...(For the 18Z TAFS Through 18Z Monday)
Issued At 1027 AM MDT Sun Sep 22 2024

VFR conditions will prevail through the TAF period.

&&

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

$$

DISCUSSION/KEY MESSAGES...JC
AVIATION...Bunkers