621
FXUS63 KUNR 012248
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
448 PM MDT Mon Sep 1 2025

.KEY MESSAGES...

- Mostly sunny with seasonal temperatures expected

- Cold front Tuesday night could bring isolated chances of showers
  and thunderstorms

- Second cold front on Thursday will bring cooler temperatures and
  gusty northwest winds.

&&

.DISCUSSION...(This Evening Through Monday)
Issued at 126 PM MDT Mon Sep 1 2025

After some morning fog and low clouds, much of the area has
cleared out allowing for a nice day across much of eastern Wyoming
and western South Dakota. Expecting clear skies this evening which
will make for optimal viewing of the northern lights tonight.
Heading into Tuesday night into Wednesday the first of two cold
fronts will move through the northern Plains. Some leftover
moisture across the region and modest low level shear will be
ample enough to initiate some isolated thunderstorms across
northwestern South Dakota.

The second cold front will be coming through on Thursday
night/Friday. This will be a dry frontal passage that will bring
some gusty northwest winds to the region. We will have to monitor
northwest South Dakota for potential wind advisory level wind
gusts. Temperatures will also trend cooler on Friday with highs
holding right around 70 for most locations.

&&

.AVIATION...(For the 00Z TAFS Through 00Z Tuesday Evening)
Issued At 448 PM MDT Mon Sep 1 2025

VFR conditions through the period.

&&

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

$$

DISCUSSION/KEY MESSAGES...Woodward
AVIATION...JC