Scientific Forecaster Discussion
fxus65 kggw 241037
Area forecast discussion
National Weather Service Glasgow Montana
337 am MST Fri Nov 24 2017
Short term...for northeast Montana...today through Sat...
A few showers still moving across the region early this morning as
cold air begins filtering south. Wind gusts of 50 to 70 mph
occurred with the stronger showers behind the frontal passage
with the strongest winds near the Little Rockies. Pressure rises
and weak cold air advection, but with the diminishing showers, not
expected as strong of wind gusts for the remainder of the morning.
Therefore have cancelled the High Wind Warning for southwest
Phillips County. Winds continue to be strong enough for lake Wind
Advisory so have kept that in place.
Winds will continue to diminish through the day as shortwave moves
to the east. Inflow of cold air not from the Arctic but enough to
push readings back closer to normal but still warm.
Upper ridge axis remains to the west into the weekend. Low sun
angle and poor mixing will keep temperatures fairly steady into
Long term...Sat night through Fri...
The upper ridge shifts eastward on Sunday in response to a trof
digging south from the Gulf of Alaska. Warm front lifts across
eastern Montana with low again forming in southern Alberta. Models
continue to split the upper trof as it moves out of the Pacific,
digging the southern portion into the desert SW states, and taking
the precipitation southward. Still could see a little rain across
southern Montana with the cold front on Monday.
A second trof moves out of the Pacific on Wednesday and could have
enough moisture for showers but mainly will bring a reinforcing
shot of cooler air. This will keep temperatures slightly above
normal for most of the week. Ebert
VFR flight conditions today and tonight. Showers will be moving
out of the state this morning but could see strong wind gusts in
the vicinity of the showers until mid morning.
lake Wind Advisory until 6 PM MST this evening for Fort Peck
Lake for central and southeast Phillips...central and southern