Area Forecast Discussion
Issued by NWS Glasgow, MT

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000
FXUS65 KGGW 282022
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
222 PM MDT Thu Mar 28 2024

.DISCUSSION...
Afternoon Discussion:
Today through Friday:
A shortwave trough will move through the area today, and finally
push the stationary front over central MT eastward. Temps are
attempting to creep closer to average area-wide for the rest of
today. Rain showers are already developing in Petroleum, Phillips,
and Garfield county, which will continue to push eastward as the
evening progresses. There is high confidence (70 percent) that
rain will change to mixed precipitation (including freezing rain)
by 00Z north of the Hi- Line, and 06Z for the rest of the area. By
15Z, this wave should be nearly into ND. As temps drop, some areas
of moderate rain may help create icy conditions by morning.
Although there are probabilities south of HWY 2 for freezing rain
accumulation, more accumulation is possible north of HWY 2. There
is moderate to high (50 to 70 percent) confidence of ice
accumulating more than 0.01" along the Hi-Line northward.

Friday night through Saturday night:
Another shortwave trough will glance the area from Saskatchewan.
There is low to moderate (30 to 50 percent) confidence of
accumulating snowfall occurring with this system. A rain/snow mix
is expected south of Fort Peck Lake.

Sunday onward:
A warming trend is in store for northeast MT, with temps much
closer to average expected by Tuesday with a positively tilted
ridge building in. A drop in temps on Wednesday includes
precipitation probabilities, but there is still too much
uncertainty to make out details for precip accumulation.

-Stoinskers

&&

.AVIATION...
Updated: 2000Z

Flight Conditions: VFR through 03Z, becoming MVFR/IFR

Discussion: High clouds will eventually be replaced with MVFR
ceilings in rain, and then mixed precipitation after 03Z. With
scattered probabilities of ice forecast, runways may become slick
within the heaviest precipitation regions. Ceilings are expected
to drop below 4000 ft msl by 04Z for KGGW, and 05Z for other TAF
sites. There is high confidence (70 percent) ceilings will drop
below 3000 ft msl by 06Z for KGGW and KOLF, and 10Z for KSDY and
KGDV as a mix of freezing rain/snow fills into the area.

Winds:
For KSDY, KOLF, and KGDV: Southeast at 5 to 15 kts, becoming
northwest at 5 to 15 kts after 06Z.

For KGGW: Southeast at 5 to 15 kts, becoming northwest at 5 to 15
kts after 03Z

-Stoinskers



&&

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

&&

$$

weather.gov/glasgow


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