300 
FXUS63 KUNR 261925
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
125 PM MDT Sat Sep 26 2020

.DISCUSSION...(This Evening Through Saturday)
Issued at 111 PM MDT Sat Sep 26 2020

Water vapor shows upper trof over the northwestern and north
central CONUS, with low center moving eastward over southern SASK.
Cold front now well east of the CWA with very gusty west/northwest
winds. -Shra continue across northwest SD into parts of northeast
WY, with drier air beginning to move in from MT.

Rain showers from northeast WY through northwest SD have delayed
the onset of any Red Flag conditions thus far today. However,
drier air over southeast MT with low/mid 20s dewpoints will allow
RH to drop by later in the afternoon into early evening. Will
leave Red Flag Warning in place with quick drying of fine fuels
expected.

Next wave drops through late tonight and Sunday with another round
of strong northwest winds. Will allow evening/night shift to
consider further wind highlights once today's winds have subsided.
Best chance for showers and higher elevation snow will be across 
our southwestern zones with this wave.

Deep upper trof sets up over the eastern CONUS for much of next
week with upper ridge along the west coast. Periodic dry cold 
fronts with gusty northwest winds will lead to elevated fire 
weather conditions at times. Temperatures will be near to slightly
below average.

&&

.AVIATION...(For the 18Z TAFS Through 18Z Sunday)
Issued At 1200 PM MDT Sat Sep 26 2020

Gusty NW winds will also continue this afternoon. Winds will 
diminish this evening, but start to increase again early Sunday 
morning.

&&

.FIRE WEATHER...
Issued at 111 PM MDT Sat Sep 26 2020

Rain showers from northeast WY through northwest SD have delayed
the onset of any Red Flag conditions thus far today. Drier air 
over southeast MT with low/mid 20s dewpoints will shift into the
region later this afternoon and early evening and will allow RH to
drop down into the 20s. Fine fuels should dry quickly once the
showers end, so will allow the Red Flag Warning to continue.

Another round of strong northwest winds expected on Sunday. Dry
and relatively cool conditions expected through the week with
periodic dry cold fronts and bouts of gusty northwest winds.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...Red Flag Warning until 8 PM MDT /9 PM CDT/ this evening for 
     SDZ323-324-327>334.

     Wind Advisory until 8 PM MDT this evening for SDZ001-002-012>014-
     025-026-031-032-043-072-073.

WY...Red Flag Warning until 8 PM MDT this evening for WYZ314-316.

&&

$$

DISCUSSION...Johnson
AVIATION...13
FIRE WEATHER...Johnson