Area Forecast Discussion
Issued by NWS Glasgow, MT

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000
FXUS65 KGGW 280255 AAA
AFDGGW

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE GLASGOW MT
855 PM MDT SUN JUL 27 2014

.SHORT TERM...FOR NORTHEAST MONTANA...TONIGHT THROUGH TUESDAY...

GOES SATELLITE IMAGERY SHOWS THE SCATTERED CUMULUS BECOMING FEW
EARLY THIS EVENING. THEREFORE LOWERED SKY COVER. OTHERWISE WITH
NORTHWEST FLOW ALOFT AND A SURFACE HIGH OVER THE AREA...FEW
CHANGES WERE NEEDED TO THE QUIET FORECAST. SCT

PREVIOUS DISCUSSION...
HIGH PRESSURE HAS MOVED INTO THE REGION AT THE SURFACE AND CALMED
WINDS COMPARED TO PREVIOUS DAYS. THIS HIGH PRESSURE IS EXPECTED
TO SLIDE OFF TO THE EAST OVERNIGHT AND SET UP A SLIGHT SOUTHEAST
WIND WHICH SHOULD MAINTAIN THROUGH THE MAJORITY OF THE SHORT TERM.

A RIDGE WILL BUILD OVER THE WESTERN THIRD OF THE CONUS. THIS WILL
PLACE NORTHEAST MONTANA IN NORTHWEST FLOW ALOFT AND SLOWLY
INCREASE THICKNESS HEIGHTS AND 850 MB TEMPERATURES... WHICH IN
TURN... SHOULD SLOWLY RAISE SURFACE TEMPERATURES OVER THE NEXT FEW
DAYS. STABLE CONDITIONS AND NO FRONTS ON THE HORIZON SHOULD
PRECLUDE MOST RAIN SHOWERS OVER THE NEXT SEVERAL DAYS.

GAH


.LONG TERM...TUESDAY NIGHT THROUGH SUNDAY...
GOING FORECAST LOOKED GOOD. TWEAKED SKY UP SLIGHTLY LATE IN THE WEEK
AS LOW LEVEL MOISTURE INCREASES A BIT UNDER THE UPPER RIDGE.  TFJ

PREVIOUS DISCUSSION...
BLOCKING PATTERN DEVELOPING AS UPPER LOW LINGERS OVER NORTHERN
QUEBEC WITH DEEP TROF OVER THE EASTERN STATES. IN THE WEST AN
UPPER RIDGE BUILDS NORTHWARD EARLY IN THE EXTENDED PERIOD.

POSITION OF THE RIDGE WILL PULL MONSOONAL MOISTURE ACROSS THE
GREAT BASIN AND INTO SOUTHWEST MONTANA. HOWEVER NORTHWEST FLOW
ACROSS EASTERN MONTANA WITH RIDGE AXIS TO THE WEST WILL DEFLECT
MOISTURE KEEPING CWA DRY THROUGH MOST OF THE WEEK. HIGH PRESSURE
OVER THE NORTHERN PLAINS WILL KEEP MOST OF THE HEAT AT BAY WITH
TEMPERATURES NEAR NORMAL EARLY IN THE PERIOD.

RIDGE BEGINS SHIFTING EAST BY THE END OF THE WEEK...WHICH SHOULD
BRING MOISTURE AND HOTTER TEMPERATURES INTO EASTERN MONTANA.
POSITION OF THE RIDGE AXIS STILL NOT FAVORABLE FOR THUNDERSTORMS
SO WILL KEEP FORECAST DRY. EBERT


&&

.AVIATION...
VFR.

CLOUDS: CUMULUS IS EXPECTED TO GRADUALLY DISSIPATE THIS
EVENING...LEAVING CLEAR SKIES OVERNIGHT TONIGHT INTO MONDAY.

WINDS: WILL REMAIN LIGHT AND VARIABLE TONIGHT EXCEPT FROM THE EAST
AT KGGW. TFJ


&&

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

&&

$$

WEATHER.GOV/GLASGOW





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