242
FXUS63 KUNR 232355
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
555 PM MDT Mon Sep 23 2024

.KEY MESSAGES...

-Aside from a few sprinkles today, dry weather with temps slowly
 warming back up this week, warmest Thursday

-Elevated fire conditions at times this week, especially
 Wednesday and Thursday

&&

.DISCUSSION...(This Evening Through Monday)
Issued at 1249 PM MDT Mon Sep 23 2024

Fairly quiet pattern this week as the western NOAM ridge rebuilds
and supports warmer temps with mainly dry weather. Upper trough
currently advecting across the region today, supporting clouds
and a few sprinkles/showers. This system continues to fight a lot
of dry air, but will have a enough lift to support isolated
afternoon/evening showers/sprinkles across mainly the central SD
plains. Any precip amounts will be very light. Cool front will
shift through the region supporting a period of breezy NW winds
this afternoon, esp on the NW SD Plains. After today, 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 early next week as a potent upper trough moves
into the Northern Plains, with a plethora of different solutions
as to how this system evolves. This will likely hinge on the
location of the expected closed low over the Midwest and its
effects on flow blocking. Some forecast models suggest it will be
cold enough for some light snow across the higher elevations of
northeast WY and western SD early next week. Much to work out
until then.

&&

.AVIATION...(For the 00Z TAFS Through 00Z Tuesday Evening)
Issued At 553 PM MDT Mon Sep 23 2024

Breezy northwest winds will diminish through this evening. Some
light showers are occurring along the front over the western SD
plains and will move out of the area this evening as well.
Otherwise expect VFR conditions through the TAF period.

&&

.FIRE WEATHER...
Issued At 1249 PM MDT Mon Sep 23 2024

Temperatures will warm back up through the week as an upper ridge
builds back, resulting in continued elevated fire weather
conditions at times. Near critical conditions are expected
Wednesday and Thursday as RH falls below 20 percent with gusty
winds. After today, no precipitation chances are expected through
the week.

&&

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

$$

DISCUSSION/KEY MESSAGES...JC
AVIATION...Dye
FIRE WEATHER...JC