009
FXUS63 KUNR 011109
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
509 AM MDT Sat Nov 1 2025

.KEY MESSAGES...

-Mild and dry weather can be expected through most of next week

&&

.DISCUSSION...(Today Through Friday)
Issued at 109 AM MDT Sat Nov 1 2025

Progressive westerly Pac flow will support mild conditions
through most of the period. Sfc high over the region this morning
with light winds and clear skies most places. The exception is
toward central SD where some lower clouds are lingering. Shortwave
ridging can be expected today with WAA. This will support some
passing cirrus as well as warmer conds, esp the western third
where the warmest temps will be. However, with progressive flow,
cool fronts will move through the region about every other day,
with the first expected Sunday morning. Models have trended toward
stronger flow behind the front Sunday, esp across NW SD where adv
levels may be possible. Not much cool air with this system, just
enough to knock temps down about 10 degrees for Monday compared to
Sunday. Dry weather expected most of the period given lack of any
appreciable moisture with any of these systems. A stronger mid-
level trough will progress through the region Thur and again later
Friday into Sat. These systems may support enough lift to support
some rain or snow then, esp over the northern Black Hills.

&&

.AVIATION...(For the 12Z TAFS Through 12Z Sunday Morning)
Issued At 507 AM MDT Sat Nov 1 2025

Mainly VFR conds in the period. The exception will be lingering
high end MVFR cigs toward central SD this morning. Otherwise,
winds will become southerly today with dense passing cirrus
expected.

&&

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

$$

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