Area Forecast Discussion
Issued by NWS Glasgow, MT

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
FXUS65 KGGW 201458

Area Forecast Discussion
National Weather Service Glasgow MT
858 AM MDT Tue Mar 20 2018

Patchy dense fog is in the Glasgow, Poplar and portions of
Sheridan County this morning that isn`t showing signs of burning
off for the next hour or two. Therefore, decided to issue a Dense
Fog Advisory till 11 am. Rest of forecast looked good, with just a
refresh of mainly clouds and wind grids. TFJ

Previous Discussion...
Weak shortwave/cold front moving through eastern Montana this
morning. A few snow showers with the system over the southeast
zones but should clear out by mid morning. Low cloud and fog
along the hi-line should also be clearing out today.

Upper ridge begins building into the state tonight. Clear skies
should result in development of a shallow inversion tonight, and
with the recent snow melt, expect another round of radiation fog.

Warming through midweek with the ridge building will accelerate
melting of the snow pack. Ice breakup on area rivers and streams
is also possible, along with ice jam flooding as ice begins to

Upper trof moving into the northern Rockies during the weekend
will bring cold and wet weather back to Montana for the end of the
week. First push will be a warm front lifting across the region
Thursday night into Friday. System has slowed slightly which now
puts the best chance for precipitation over the eastern zones
Friday morning. Temperature profiles are also warmer which would
result in a mostly rain event, with snow accumulations limited to
the far northeast corner of the state.

Uncertainty continues regarding precipitation chances for the
remainder of the weekend. Would expect some precipitation with the
upper trof moving through the region but models have not settled
on any specifics. Ebert


MVFR to VFR conditions with low clouds and fog as low pressure
system moves through eastern Montana this morning. Clearing is
expected through the day, and with snow melt, will likely lead to
the redevelopment of fog tonight under a shallow inversion.


Flood Watch through Thursday morning for Garfield...Petroleum.

Dense Fog Advisory until 11 AM MDT this morning for Central and
Southern Valley...Eastern Roosevelt...Sheridan.


$$ is the U.S. government's official web portal to all federal, state and local government web resources and services.