Area Forecast Discussion
Issued by NWS Rapid City, SD

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
FXUS63 KUNR 091713

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
1013 AM MST Sat Dec 9 2017

.DISCUSSION...(This Afternoon Through Friday)
Issued at 1011 AM MST Sat Dec 9 2017

Strong north-northwest flow continues over the northern plains
between a ridge to the west and a trough to the east. Under mostly
clear skies, winds are northwesterly around 10 kts, and
temperatures are in the mid 20s to mid 30s.

Another day of gusty winds is expected today, especially just east
of the Black Hills as the pressure gradient tightens over the Hills
and 30-40 kt winds mix down in the afternoon. Have issued a Wind
Advisory for that area. Northwestern SD will also be breezy, but
below advisory criteria for the most part. Black Hills pressure
gradient could cause continued breezy winds over the northeastern
foothills tonight. Temperatures today will warm into the mid 40s
to mid 50s. Even warmer air moves into the region for Sunday, with
highs in the 50s to lower 60s.

The Sunday night/Monday morning clipper will slide east of the CWA,
but cooler temps and strong winds are still expected across the area
Monday. Temperatures will rebound Tuesday, before another clipper
brings gusty winds and cooler temperatures for Wednesday; however,
models disagree on the track, timing, and intensity of that system.
Dry weather is expected through the week, with the next chance for
precipitation towards the end of the week and into the weekend.


.AVIATION...(For the 18Z TAFS Through 18Z Sunday)
Issued At 1011 AM MST Sat Dec 9 2017

Gusty west/northwest winds will continue through the period,
especially on the northeast/east slopes of the Black Hills. VFR
conditions will continue. LLWS will develop over much of western
South Dakota around 00Z this evening and will continue until
around 12Z on Sunday morning.


SD...Wind Advisory until 5 PM MST this afternoon for SDZ026-031-072-



AVIATION...10 is the U.S. government's official web portal to all federal, state and local government web resources and services.