Area Forecast Discussion
Issued by NWS Rapid City, SD

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
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

000
FXUS63 KUNR 312029
AFDUNR

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
229 PM MDT FRI OCT 31 2014

.SHORT TERM...THIS EVENING THROUGH SATURDAY NIGHT
ISSUED AT 220 PM MDT FRI OCT 31 2014

UPPER LEVEL ANALYSIS HAS RIDGE MOVING ACROSS THE ROCKIES INTO THE
GREAT PLAINS. AT THE SURFACE...CANADIAN HIGH PRESSURE IS LOCATED
ACROSS THE EASTERN DAKOTAS WITH LOW PRESSURE OVER THE NORTHERN
ROCKIES. TIGHT PRESSURE GRADIENT PERSISTS BETWEEN THESE TWO
FEATURES. SKIES ARE PARTLY CLOUDY ACROSS MUCH OF THE AREA..
TEMPERATURES AT 2 PM ARE IN THE 40S AND 50S WITH GUSTY SOUTH TO
SOUTHEAST WINDS.

TONIGHT...GUSTY SOUTHERLY WINDS WILL DIMINISH AFTER SUNSET...BUT
STILL REMAIN BREEZY AT TIMES. TEMPERATURES WILL FALL INTO THE 20S
ACROSS CENTRAL SOUTH DAKOTA...AND INTO THE 30S AND 40S ACROSS
WESTERN SOUTH DAKOTA AND NORTHEAST WYOMING.

UNSEASONABLY MILD TEMPERATURES WILL RETURN TO MOST AREAS FOR
SATURDAY...WITH HIGHS RANGING FROM THE MID 50S TOWARD NORTH-
CENTRAL SD TO THE MID 70S OVER NORTHEAST WYOMING AND MUCH OF THE
FAR SOUTHWESTERN SD PLAINS. MOSTLY SUNNY SKIES ARE EXPECTED...WITH
SOME INCREASE IN CLOUDS LIKELY IN THE AFTERNOON AND EVENING. WINDS
WILL BE FROM THE SOUTH AND SOUTHWEST OVER NORTHEAST WY AND
SOUTHWEST SD...WITH BREEZY SOUTH TO SOUTHEAST WINDS OVER SOUTH
CENTRAL SD. GUSTY SOUTHWEST WINDS WILL DEVELOP OVER NORTHEAST WY
SATURDAY NIGHT AHEAD OF AN APPROACHING COLD FRONT THAT WILL PASS
THROUGH ON SUNDAY.

&&

.LONG TERM...SUNDAY THROUGH FRIDAY
ISSUED AT 220 PM MDT FRI OCT 31 2014

THE MODELS REMAIN IN GENERALLY GOOD AGREEMENT THROUGH EARLY NEXT
WEEK. SPLITTING UPPER TROF SLIDES THROUGH THE PLAINS
SUNDAY/MONDAY...WITH BEST FORCING NORTHWEST AND SOUTH OF FORECAST
AREA. MAY BE SOME LIGHT SHOWERS SUNDAY NIGHT ALONG FRONTAL
BOUNDARY ACROSS SOUTH CENTRAL SOUTH DAKOTA. DRY NORTHWEST FLOW
ALOFT EXPECTED FOR FIRST HALF OF NEXT WEEK. MODELS DIVERGE FOR THE
END OF THE WEEK...WITH ECMWF HINTING AT MORE RIDGING ALOFT VERSUS
COOLER NORTHWEST FLOW FROM GFS.

&&

.AVIATION...FOR THE 00Z TAFS THROUGH 00Z SATURDAY AFTERNOON
ISSUED AT 220 PM MDT FRI OCT 31 2014

VFR CONDITIONS EXPECTED THROUGH SATURDAY MORNING. GUSTY SOUTH
WINDS WILL DECREASE THIS EVENING.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...WIND ADVISORY UNTIL 6 PM MDT THIS EVENING FOR SDZ001-002-012>014-
     026-031-032-072-073.

WY...NONE.
&&

$$

SHORT TERM...15
LONG TERM...7
AVIATION...7






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