Area Forecast Discussion
Issued by NWS Glasgow, MT

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FXUS65 KGGW 300818
AFDGGW

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
218 AM MDT WED JUL 30 2014

.SHORT TERM...FOR NORTHEAST MONTANA...TODAY THROUGH FRIDAY...
AN UPPER RIDGE WILL REMAIN OVER THE AREA THE NEXT FEW DAYS
BRINGING SUMMERLIKE WARMTH. 850 MB TEMPERATURES OF 20-25C WILL
ALLOW FOR HIGHS IN THE 90S IN MOST AREAS. LOOK FOR DRY WEATHER
WITH MOSTLY CLEAR SKIES MOST OF THE TIME. THERE WILL BE A WEAK
SHORTWAVE MOVING ACROSS THE NORTHEAST CORNER OF THE STATE TONIGHT
THAT COMBINED WITH UNSTABLE AIR COULD BRING A SLIGHT CHANCE OF
THUNDERSTORMS TO THE NORTHEAST ZONES. ANOTHER SHORTWAVE ON FRIDAY
COULD BRING ANOTHER SLIGHT CHANCE OF THUNDERSTORMS ALONG THE
CANADIAN BORDER FRIDAY AFTERNOON. FORRESTER

.LONG TERM...FRIDAY NIGHT THROUGH WEDNESDAY...
THE EXTENDED PERIOD BEGINS FRIDAY NINTH WITH A LARGE UPPER LEVEL
RIDGE ACROSS THE WESTERN U.S. AND A TROUGH ACROSS THE GREAT LAKES
REGION. THIS PLACES THE REGION UNDER NORTHWEST FLOW ALOFT AS A
DEPARTING UPPER SHORTWAVE PUSHES EAST INTO NORTH DAKOTA/SOUTHERN
MANITOBA. WILL KEEP SLIGHT CHANCE MENTION PRIMARILY ALONG THE
INTERNATIONAL BORDER AS THIS SYSTEM PUSHES AWAY. ADDITIONAL
SHORTWAVES WILL RIDE THROUGH THE RIDGE THROUGH THE WEEKEND WHICH
WILL MAINTAIN SLIGHT CHANCES FOR SHOWERS AND THUNDERSTORMS. WITH
THE RIDGE LARGELY IN PLACE...DO EXPECT CONTINUED SUMMERTIME
TEMPERATURES WITH HIGHS NEAR 90 THROUGH THE WEEKEND.

ENHANCED MONSOONAL FETCH OF MOISTURE MAY PRODUCE BETTER CHANCES
FOR SHOWERS OR THUNDERSTORMS HEADING INTO EARLY NEXT WEEK IF
TIMING AND TRACK OF SHORTWAVES IS FAVORABLE. FOR NOW MAINTAINED
SLIGHT CHANCES THROUGH THE PERIOD UNTIL MODEL CONSENSUS BETWEEN
THE ECMWF AND GFS IMPROVES WITH REGARD TO THESE DETAILS. THESE
SHORTWAVES MAY ALSO KNOW DOWN THE RIDGE ALLOWING FOR SOMEWHAT
COOLER TEMPERATURES AS THE EXTENDED PERIOD COMES TO A FINISH
ALTHOUGH HIGHS SHOULD GENERALLY STILL REACH THE 80S. MALIAWCO


&&

.AVIATION...
EXPECT VFR CONDITIONS ACROSS THE TERMINALS. PREVAILING LIGHT
SOUTHEAST WINDS WILL PERSIST THROUGH TONIGHT. MALIAWCO

&&

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

&&

$$

WEATHER.GOV/GLASGOW





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