136
FXUS65 KGGW 200927
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
327 AM MDT THU SEP 20 2018
DISCUSSION
RAIN, STEADY AT TIMES, WILL CONTINUE TODAY WITH PATCHY FOG A
CONCERN AS WELL. ALL TOLD, MUCH OF THE CWA REMAINS ON TRACK TO
PICK UP BETWEEN 0.25" AND 0.75" OF QPF IN GENERAL BEFORE
PRECIPITATION WINDS DOWN FROM WEST TO EAST THIS EVENING AND
TONIGHT. AS THIS WEATHER SYSTEM MAKES PROGRESS DOWNSTREAM OF THE
CWA, TEMPERATURES MAY COOL ENOUGH ALONG THE IMMEDIATE CANADIAN
BORDER FOR A MIX WITH SNOW, THOUGH DO NOT EXPECT ACCUMULATIONS
WITH WARM GROUND TEMPERATURES.
FRIDAY AND SATURDAY WILL OFFER DRY BUT CONTINUED COOL WEATHER
CONDITIONS AS AN UPPER RIDGE BUILDS ACROSS THE REGION. EXPECT THAT
THE NEXT UPPER LEVEL DISTURBANCE WILL APPROACH ON SUNDAY WITH A
CHANCE FOR SHOWERS ACROSS MOST OF NORTHEAST MONTANA. AT THIS TIME,
IT DOES LOOK AS THOUGH THERE WILL BE MORE LIMITED MOISTURE
AVAILABLE WITH THIS SECOND SYSTEM, BUT SOME PLACES COULD PICK UP
ON EITHER SIDE OF 0.10" QPF WHERE THE STEADIEST SHOWERS OCCUR.
FOLLOWING THE WEEKEND, THE 00Z MODELS OFFER THEIR USUAL GROWING
DIFFERENCES AT LARGER TIME SCALES. THUS, TRENDED THE FORECAST
TOWARD CONSENSUS BLENDS FOR NOW. MALIAWCO
AVIATION
FLIGHT CATEGORY: MVFR TO IFR CIGS AND VSBYS ARE EXPECTED TO
PREVAIL, ESPECIALLY WITH THE STEADIEST RAINFALL.
DISCUSSION: RAIN WILL CONTINUE, STEADY AT TIMES TODAY. ASSOCIATED
LOW CEILINGS AND REDUCED VISIBILITY COULD IMPACT FLIGHT
CONDITIONS. PATCHY FOG COULD ALSO LEAD TO REDUCED VISIBILITY, EVEN
AT TIMES WHEN THE RAINFALL LETS UP IN INTENSITY.
WIND: EAST TO NORTHEAST WINDS WILL GENERALLY RANGE BETWEEN 5 AND
15 KTS.
MALIAWCO
GLASGOW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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