Area Forecast Discussion
Issued by NWS Rapid City, SD

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000
FXUS63 KUNR 280515
AFDUNR

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
1115 PM MDT SAT JUN 27 2015

.SHORT TERM...THIS EVENING THROUGH SUNDAY NIGHT
ISSUED AT 217 PM MDT SAT JUN 27 2015

STRONG UPPER RIDGING CONTINUES ACROSS THE WRN THIRD OF THE
CONUS...WITH NWRN FLOW OVER THE NRN PLAINS. A STRONG UPPER WAVE IS
CROSSING FAR SRN CNDA JUST MOVING INTO ERN ND/NRN MN. A WEAK
FRONTAL BOUNDARY IS MOVING SOUTH ACROSS THE WRN SD PLAINS. VIS SAT
SHOWS LINE OF CU DEVELOPING ALONG THE BOUNDARY. TEMPS HAVE REACHED
THE MID TO UPPER 80S...WITH WINDS INCREASING BEHIND THE BOUNDARY.
CLOUDS WILL DISSIPATE EARLY THIS EVNG WITH CLEAR SKIES OVERNIGHT.
SUNNY SKIES ARE EXPECTED SUNDAY WITH SURFACE HIGH REMAINING ACROSS
THE AREA. TEMPS WILL BE SIMILAR TO TODAY. NRLY WINDS ARE EXPECTED
ACROSS THE WRN SD PLAINS...WITH LIGHT/VRB WINDS OVER NE WY/BLKHLS.

.LONG TERM...MONDAY THROUGH SATURDAY
ISSUED AT 217 PM MDT SAT JUN 27 2015

AN UPPER LEVEL RIDGE WILL BE IN PLACE OVER THE ROCKIES INTO THE
PLAINS FOR MONDAY. THE RIDGE WILL SLOWLY FLATTEN TUESDAY INTO
WEDNESDAY AS A SERIES OF SHORTWAVES SCOOT ACROSS SOUTHERN
CANADA/NORTHERN ROCKIES/NORTHERN PLAINS. SEVERAL WEAK COOL
FRONTS/TROUGHS WILL DROP INTO THE CWA BRINGING A CHANCE OF
TSRA...ESPECIALLY TUESDAY AND THURSDAY. FRONTS WILL LAY OUT WEST
TO EAST OVER THE CWA AS UPPER FLOW BECOMES MORE ZONAL SUGGESTING
EACH BOUNDARY MAY STALL CREATING TEMPERATURE FORECAST
UNCERTAINTIES. UPPER RIDGE REBUILDS OVER THE WESTERN CONUS BY
FRIDAY INTO NEXT WEEKEND WITH DRIER NORTHWEST FLOW ALOFT.
TEMPERATURES WILL BE WARMEST TUESDAY AND THEN COOL TO NEAR NORMAL
FOR THE REST OF THE WEEK.

&&

.AVIATION...FOR THE 06Z TAFS THROUGH 06Z SUNDAY NIGHT
ISSUED AT 1114 PM MDT SAT JUN 27 2015

VFR CONDITIONS WITH MAINLY CLEAR SKIES WILL CONTINUE THROUGH
SUNDAY EVENING.

&&

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

$$

SHORT TERM...13
LONG TERM...HELGESON
AVIATION...10



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