Area Forecast Discussion
Issued by NWS Rapid City, SD

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000
FXUS63 KUNR 261953
AFDUNR

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
153 PM MDT SAT JUL 26 2014

.SHORT TERM...THIS EVENING THROUGH SUNDAY NIGHT
ISSUED AT 151 PM MDT SAT JUL 26 2014

EASTERN CONUS TROUGHING ONGOING AS A STRONG COMPACT
UPPER LEVEL LOW CONTINUES TO ADVECT SE INTO THE UPPER MIDWEST.
WESTERN CONUS RIDGE WILL REMAIN ANCHORED IN THE PERIOD WITH THE
NORTHERN PLAINS REMAINING IN THE NEUTRAL SINK ZONE. THIS WILL
SUPPORT SFC RIDGING THROUGH THE PERIOD WITH DRY WX. STACKED FAST
MOMENTUM FIELDS ON THE WESTERN EDGE OF THE ADVECTING UPPER LOW WILL
CONTINUE SUPPORT BREEZY NORTHERLY WINDS OVER THE SD PLAINS
SUNDAY...LESS SO THAN TODAY. HAVE TWEAK WINDS UP SOME FOR SUNDAY
AFTERNOON...ESP SCENTRAL SD WHERE SUSTAINED WINDS OF 15 TO 20 MPH
WITH HIGHER GUSTS ARE EXPECTED. WEAK CAA WILL CEASE TONIGHT WITH
NEUTRAL TEMP ADV THROUGH SUNDAY...SUPPORTING HIGHS A FEW DEGREES
COOLER THAN TODAY...JUST BELOW CLIMO NORMS IN THE UPPER 70S AND LOW
80S. CLEAR SKIES AND DRY AIR IN PLACE WILL SUPPORT A GOOD SETUP FOR
RADIATIONAL COOLING...WITH VALLEY AREAS ESP SEEING COOL MINS. LOWS
THE NEXT TWO NIGHTS WILL BE ON THE COOL SIDE OF NORMAL...AVERAGING
AROUND 5 DEGREES BELOW SEASONAL NORMS...ESP OVER NE WY.

&&

.LONG TERM...MONDAY THROUGH SATURDAY
ISSUED AT 151 PM MDT SAT JUL 26 2014

UPPER RIDGING WILL REMAIN OVER THE WESTERN CONUS THROUGH THE
EXTENDED PERIOD. THE MAIN AXIS IS FORECAST TO REMAIN ALONG AND WEST
OF THE CONTDVD. NW FLOW ALOFT IS EXPECTED WITH A FEW WEAK WAVES
CROSSING THROUGH...MAINLY TUESDAY THROUGH EARLY WEDNESDAY. THIS WILL
BRING A CHANCE OF STORMS TUESDAY AND WEDNESDAY. OTHERWISE AN OVERALL
DRY EXTENDED IS EXPECTED...EXCEPT FOR MAYBE ISOLATED STORMS OVER THE
BLKHLS LATER NEXT WEEK. TEMPERATURES WILL BE NEAR SEASONAL AVERAGES.

&&

.AVIATION...FOR THE 18Z TAFS THROUGH 18Z SUNDAY
ISSUED AT 151 PM MDT SAT JUL 26 2014

VFR CONDITIONS ARE EXPECTED THROUGH THE FORECAST PERIOD.

&&

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

WY...NONE.
&&

$$

SHORT TERM...JC
LONG TERM...13
AVIATION...13





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