Area Forecast Discussion
Issued by NWS Rapid City, SD

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000
FXUS63 KUNR 120842
AFDUNR

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
242 AM MDT FRI SEP 12 2014

.SHORT TERM...TODAY THROUGH SATURDAY NIGHT
ISSUED AT 231 AM MDT FRI SEP 12 2014

WATER VAPOR SHOWS STRONG UPPER LOW OVER THE NRN PLAINS...WITH
SHORT WAVE RIDGING BUILDING INTO THE NRN ROCKIES. NEXT UPPER WAVE
IS NOTED DIVING SEWD ACRS BC. AT THE SFC...HIGH HAS SETTLED INTO
ERN WY/WRN SD. TEMPS HAVE FALLEN INTO THE 20S TO LOWER 30S ACRS
NERN WY AND FAR WRN SD AND CURRENT FREEZE/FROST HEADLINES LOOK
GOOD. CLOUDS ARE QUICKLY DECREASING ACRS FAR WRN SD PER IR
IMAGERY...ALTHOUGH LOW STRATUS IS HANGING TOUGH ACRS NERN WY.

FOR TODAY...CLOUDS WILL CONTINUE TO DECREASE EARLY THIS MRNG WITH
ANY LINGERING LOW STRATUS DISSIPATING BY MID/LATE MRNG. SFC HIGH
WILL SHIFT INTO THE CNTRL PLAINS WITH RETURN FLOW ACRS NERN WY AND
FAR WRN SD...ALLOWING TEMPS TO WARM INTO THE 50S MOST PLAINS LOCATIONS.

TONIGHT...CLEAR SKIES EXPECTED. LEE TROF WILL ADVANCE EWD INTO ERN
MT/ERN WY WITH INCREASING LLJ ACRS THE CWFA. TEMPS WILL BE QUITE
COLD ONCE AGAIN...ALTHOUGH FROST SHOULD REMAIN PATCHY GIVEN
EXPECTED MIXING.

SATURDAY...UPPER TROF PUSHES THROUGH THE DAKOTAS WITH WINDS
SHIFTING TO THE NW BY AFTN. MOISTURE WILL BE SCARCE SO NOTHING
MORE THAN A FEW CLOUDS EXPECTED. TEMPS SHOULD WARM INTO THE 60S
MOST PLAINS LOCATIONS.

&&

.LONG TERM...SUNDAY THROUGH THURSDAY
ISSUED AT 231 AM MDT FRI SEP 12 2014

MAINLY DRY WEATHER AND A SLOW WARMING TREND WILL
CONTINUE FROM SUNDAY INTO EARLY NEXT WEEK AS AN UPPER RIDGE BUILDS
ACROSS THE WESTERN STATES AND EVENTUALLY MOVES INTO THE PLAINS.
TEMPERATURES WILL RISE BACK TO NEAR AVERAGE LEVELS EARLY NEXT WEEK.
AN EXCEPTION TO THE DRY WEATHER WILL BE ON SUNDAY AND SUNDAY NIGHT.
ISOLATED SHOWERS ARE POSSIBLE MAINLY OVER FAR SOUTH CENTRAL SD AS A
DISTURBANCE CROSSES THE AREA.

&&

.AVIATION...FOR THE 06Z TAFS THROUGH 06Z FRIDAY NIGHT
ISSUED AT 231 AM MDT FRI SEP 12 2014

MVFR/IFR CONDITIONS WILL PERSIST ACROSS NORTHEAST
WYOMING...PARTS OF THE BLACK HILLS...AND FAR SOUTHWEST SOUTH DAKOTA
THROUGH MID MORNING. ACROSS THE SOUTH DAKOTA PLAINS...AREAS OF MVFR
CEILINGS WILL SHIFT EAST BY 12Z WITH MAINLY VFR CONDITIONS EXPECTED
TODAY.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...FROST ADVISORY UNTIL 8 AM MDT THIS MORNING FOR SDZ014-032-043-
     044.

     FREEZE WARNING UNTIL 8 AM MDT THIS MORNING FOR SDZ001-002-012-
     013-025>027-030-031-041-042-072>074.

WY...FREEZE WARNING UNTIL 8 AM MDT THIS MORNING FOR WYZ054>056-058-
     071.

&&

$$

SHORT TERM...JOHNSON
LONG TERM...15
AVIATION...15







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