National Weather Service Text Product Display

Area Forecast Discussion
Issued by NWS Grand Forks, ND
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FXUS63 KFGF 060349
AFDFGF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND FORKS ND
949 PM CST THU DEC 5 2013

.UPDATE...
ISSUED AT 944 PM CST THU DEC 5 2013

WITH COLD AIRMASS TOUGH TO GET A GOOD HANDLE ON CLOUD COVER VIA
SATELLITE IMAGERY. APPEARS MOST PERSISTENT CLOUD COVER FROM DVL
BASIN INTO NORTHERN VALLEY. THIS REFLECTED BY WARMER TEMPERATURES.
BASED ON CURRENT TRENDS HAD TO LOWER MINIMUMS ACROSS SCATTERED
AREAS OF THE FORECAST AREA THAT HAVE BEEN UNDER SKC LONGEST. NOT
SEEING MUCH IN THE WAY OF FLURRIES SO WILL JUST MENTION REMAINDER
OF THE EVENING. ANY OTHER CHANGES WILL BE MINOR.

UPDATE ISSUED AT 625 PM CST THU DEC 5 2013

BKN CLOUD COVER ASSOCIATED WITH CANADIAN UPPER LOW CONTINUES TO
SEEP SOUTHWARD INTO NORTHERN HALF OF THE FA. THIS HAS HELD
TEMPERATURES UP SOMEWHAT HOWEVER TOO EARLY TOO TELL IF CLOUDS WILL
HAVE AN IMPACT ON MORNING LOWS SO LEFT TEMPERATURES AS IS FOR NOW.
ENOUGH MOISTURE IN CLOUDS TO SQUEEZE OUT SOME FLURRIES SO INCLUDED
MENTION FOR THE REMAINDER OF THE EVENING. NO OTHER CHANGES TO THE
FORECAST AT THIS TIME.

&&

.SHORT TERM...(THIS EVENING THROUGH FRIDAY NIGHT)
ISSUED AT 245 PM CST THU DEC 5 2013

THE MAIN CONCERN WILL BE WIND CHILL VALUES. THE WIND CHILL
ADVISORY IS IN EFFECT UNTIL NOON SATURDAY...SO NO CHANGES ARE
NEEDED FOR THIS PRODUCT. THERE MAY BE BRIEF PERIODS DURING THE DAY
WHERE VALUES ARE ABOVE ADVISORY CRITERIA...BUT WILL KEEP THINGS
SIMPLE.

THE UPPER AIR PATTERN ACROSS THE REGION WILL MAKE VERY LITTLE
CHANGE THROUGH FRIDAY NIGHT...ALTHOUGH SLIGHTLY COLDER AIR WILL
TRICKLE INTO THE REGION. MODELS ARE OVER DOING MOISTURE AND CLOUD
COVER...BUT GIVEN THE UPPER AIR PATTERN MOST AREAS SHOULD SEE AT
LEAST SOME CLEARING (EXCEPT CLOSER TO THE INTERNATIONAL BORDER).
MIXING WILL CONTINUE...AND GUIDANCE IS ALL OVER THE MAP WITH MAX
AND MIN TEMPS. WILL FORECAST SOMEWHERE IN THE MIDDLE...WHICH
APPEARS A SAFE BET GIVEN TODAYS TEMPS.

.LONG TERM...(SATURDAY THROUGH THURSDAY)
ISSUED AT 245 PM CST THU DEC 5 2013

SATURDAY-SUNDAY...THE UPPER AIR PATTERN FINALLY BEGINS TO CHANGE A
LITTLE BIT...AS AN UPPER TROUGH APPROACHES THE REGION ON SUNDAY.
THE COLD AIRMASS WILL REMAIN ACROSS THE REGION...BUT SUNDAY SHOULD
BE A BIT WARMER. 12Z MODELS INDICATE LIGHT QPF ON SUNDAY
ASSOCIATED WITH THAT UPPER TROUGH...AND SLIGHTLY INCREASED POPS
(MAYBE UP TO AN INCH OF SNOW POSSIBLE). WILL NEED TO TAKE A CLOSER
LOOK AT WIND CHILLS AND POSSIBLY EXTENDING THE WIND CHILL ADVISORY
INTO SATURDAY NIGHT ON LATER SHIFTS.

SUNDAY NIGHT-THURSDAY...A VERY COLD ARCTIC AIRMASS WILL REMAIN IN
PLACE THROUGH THE EARLY PART OF THE PERIOD. MODELS CONTINUE TO
SHOW A SYSTEM MOVE INTO THE UPPER MIDWEST SUN INTO SUN
NIGHT...ALLOWING CLOUDS TO INCREASE AS WELL AS A CHANCE OF PRECIP
IN WEST CENTRAL AND NORTHERN MN. ONCE THE SUN/SUN NIGHT SYSTEM
PULLS OUT OF THE GREAT LAKES AND A SHARP UPPER TROUGH PUSHES
THROUGH...NW FLOW WILL BRING DAYTIME TEMPS BACK BELOW ZERO FOR THE
EARLY PART OF NEXT WEEK. BOTH GFS AND ECMWF CONTINUE TO SHOW A
WEAK CLIPPER MOVE ACROSS THE DAKOTAS MON NIGHT INTO TUE. WHILE
MODELED QPF IS WEAK...12Z ECMWF IS MORE BULLISH THAN THE 12Z RUN
YESTERDAY AND CONSALL IS NOW SHOWING A SLIGHT CHANCE FOR SNOW
SHOWERS. THE GFS TRACK IS MUCH FURTHER SOUTH AND QPF CONTINUITY
SIMILAR TO YESTERDAYS 12Z RUN. TEMPS CONTINUE TO BE IN THE 15 TO
20 BELOW RANGE...WHICH INCREASED CLOUD COVER ASSOCIATED WITH THE
SYSTEM WOULD CAUSE TO BE MUCH WARMER...ESPECIALLY IF THE ECMWF IS
CORRECT. THE MID TO LATE PART OF THE WEEK SHOULD BE DRY BUT A
WARMING TREND WILL BRING MORE MILD TEMPS TO THE AREA BY THE WEEKS
END.

&&

.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z FRIDAY EVENING)
ISSUED AT 625 PM CST THU DEC 5 2013

VARYING CIG HEIGHT BETWEEN MVFR-VFR AFFECTING NORTH HALF OF FA AND
WILL LIKELY CONTINUE OVERNIGHT. UNCERTAINTY ON HOW FAR CIGS WILL DROP
INTO THE FA SO KEPT LOWER CIG MENTION CONFINED TO NORTHERN TAF
SITES. SOME RESTRICTION TO VSBY IN FLURRIES/IC BUT VERY ISOLD AND
DID NOT MENTION IN TAFS.


&&

.FGF WATCHES/WARNINGS/ADVISORIES...
ND...WIND CHILL ADVISORY UNTIL NOON CST SATURDAY FOR NDZ006>008-
     014>016-024-026>030-038-039-049-052>054.

MN...WIND CHILL ADVISORY UNTIL NOON CST SATURDAY FOR MNZ001>009-
     013>017-022>024-027>032-040.

&&

$$

UPDATE...VOELKER
SHORT TERM...TG
LONG TERM...TG/SPEICHER
AVIATION...VOELKER
National Weather Service Weather Forecast Office
