Area Forecast Discussion
Issued by NWS Glasgow, MT

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FXUS65 KGGW 150916
AFDGGW

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
316 AM MDT MON SEP 15 2014

.SHORT TERM...FOR NORTHEAST MONTANA...TODAY THROUGH WEDNESDAY...

SHORT TERM FORECAST PERIOD IS VERY STRAIGHT-FORWARD AND UN-
COMPLICATED. THE RIDGE OF HIGH PRESSURE OVER THE WESTERN STATES
WILL SLOWLY MOVE EASTWARD. AS IT DOES...IT WILL BECOME SOMEWHAT
WEAKENED OR FLATTENED BY AN EMBEDDED SHORT-WAVE TROUGH RIDING UP
AND AROUND THE RIDGE CREST BY WEDNESDAY. THIS WILL LIKELY
INTRODUCE SOME MORE CLOUDINESS TO THE AREA BY MID-WEEK...BUT
NOTHING MORE.

EXPECTING SUNNY AND CLEAR SKIES TO START WITH AND NO PRECIPITATION
THROUGH THE BEGINNING OF THE WEEK. TEMPERATURES WILL CLIMB TO
NEAR NORMAL BY TUESDAY...THEN CLIMB TO ABOVE NORMAL BY WEDNESDAY.
THIS WEATHER PATTERN WILL PROVIDE NORTHEAST MONTANA WITH A VERY
COMFORTABLE AND NEARLY UN-NOTICEABLE TRANSITION INTO AUTUMN.
WINDS WILL ALSO BE LIGHT AND VARIABLE IF NOT CALM. BMICKELSON

.LONG TERM...WEDNESDAY NIGHT THROUGH MONDAY...

PRETTY GOOD MODEL AGREEMENT THROUGH THE EXTENDED PERIOD WITH A
FAIRLY PROGRESSIVE PATTERN. UPPER RIDGE OVER THE ROCKY MOUNTAIN
STATES MIDWEEK EXPECTED TO GRADUALLY FLATTEN AS TROF OFF THE WEST
COAST MOVES INLAND. AFTER WELL ABOVE NORMAL TEMPERATURES ON
THURSDAY...A COOLING TREND WILL OCCUR INTO THE WEEKEND WITH THE
SUPPRESSION OF THE RIDGE. WESTERN TROF SPLITS ITS ENERGY AS IT
MOVES ONSHORE WITH THE SOUTHERN BRANCH DIGGING INTO THE DESERT
SOUTHWEST AND KEEPING MOST OF THE MOISTURE. NORTHERN STREAM WAVE
MUCH FLATTER AND WEAKER AS IT TRACKS ALONG THE INTERNATIONAL
BORDER ON FRIDAY. MODELS DRYING OUT THE AIR MASS WITH DEEP WESTERLY
DOWNSLOPE FLOW SO HAVE LOWERED POPS FOR THE END OF THE WEEK.

RIDGE REBOUNDS OVER THE NORTHERN ROCKIES FOR EARLY NEXT WEEK WITH
MORE DRY WEATHER AND WARMING TEMPERATURES. EBERT

&&

.AVIATION...

CLEAR SKIES AND LIGHT WINDS EXPECTED AS HIGH PRESSURE MOVES
THROUGH THE NORTHERN PLAINS.


&&

.GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE.

&&

$$

WEATHER.GOV/GLASGOW





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