Moreau, South Dakota Weather Forecast Discussion

789
FXUS63 KUNR 260818
AFDUNR
Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
218 AM MDT Fri Sep 26 2025
.KEY MESSAGES...
- Dry conditions and above average temperatures into next week
- Gusty northerly winds behind cool front today with smoke
  possible
- Elevated fire weather conditions at times
&&
.DISCUSSION...(Today Through Thursday)
Issued at 215 AM MDT Fri Sep 26 2025
08z surface analysis had low over southern SK with cool front
into western MT and a pre-frontal trough into eastern WY. Water
vapour loop had upper trough zipping across the northern Rockies
as upper ridge starts to flatten as it shifts eastward. Clear
skies over the CWA per nighttime microphysics RGB. Main concern
this forecast is cool front.
Today/tonight, upper trough races eastward taking surface low across
southern Canada which will drag dry cool front through the CWA.
Behind it, 2-3mb/3hr pressure rises forecast with 20-35kt boundary
layer winds. Cold air advection fairly weak with forecast Bufkit
soundings supporting a 3-6 hour period of gusty northerly winds,
perhaps gusting to 30-40mph from K2WX-KRAP per probabilistic
guidance. HREF/NBM has 

NWS UNR Office Area Forecast Discussion