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 28 29
000
FXUS65 KGGW 220115 AAA
AFDGGW

Area Forecast Discussion...UPDATED
National Weather Service Glasgow MT
715 PM MDT Sat Apr 21 2018

.DISCUSSION...
Update:

The cold front is continuing to push across the area this evening.
The radar show the progression fairly well. Updated wind since it
is a bit higher than expected. Otherwise only minor adjustments
made to the ongoing forecast for the overnight hours.   Proton

Previous Discussion:

Cold front and/or surface trough has moved into the western zones
this afternoon. Prefrontal compressional warming have boosted
temps this afternoon above guidance numbers, with 70s into the
northern zones. Some areas in the east only reached the upper 60s.

Main concern this evening will be winds with the cold frontal
passage. With strong Cold Air Advection, winds will be higher than
median guidance numbers and thus weighed heavily on GFS 1 hour
guidance.

Afterwards, the next system will be on Monday with a system
brushing the southern zones. Peak QPF a couple tenths of an inch
and there is a slight concern for snow, especially for the Big
Sheeps in Prairie County. TFJ

The remainder of the week is expected to feature an upper ridge
building over the west. Another cold front will drop across the
region in the northwest flow on Wednesday, with gusty winds
possible. Ebert


&&

.AVIATION...
VFR.

Winds will be the main concern for this evening as a cold front
moves through. Look our for an increase in speed shortly after
winds turn to the NW with the frontal passage. Highest winds may
be just off the surface. TFJ

&&

.HYDROLOGY...
Flood warnings remain in effect for the Milk River and its
tributaries until further notice.

The Milk River continues to slowly rise from Dodson through
Nashua. The main concern is from Saco to Glasgow where Moderate
Flood Stage is expected to hold into next week.

The Frenchman Creek has been rising and a Flood Advisory has been
issued for this in northeast Phillips County.

Some country roads in southern Sheridan County have been flooded
and are closed. Water levels on Big Muddy Creek have risen at
Antelope. A Flood Advisory is in effect until Saturday evening
April 21st.

A Flood Advisory will be allowed to expire in Petroleum County.
TFJ

To monitor river stage readings, go to our Advanced Hydrologic
Prediction Service (AHPS) page at www.weather.gov/glasgow then
click on "Rivers and Lakes" then "River Observations". Data for
this page are provided by the USGS.

&&

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

&&

$$

weather.gov/glasgow



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