textproduct: Glasgow

KEY MESSAGES

- Seasonable temperatures and widespread rain showers with scattered thunderstorms are expected tonight and tomorrow.

- Below normal temperatures with mixed precipitation Thursday and Friday.

DISCUSSION

WEATHER PATTERN OVERVIEW:

Upper low off the northern California coast will lift through the Great Basin through the early part of the week. This will continue to push Pacific moisture into the state, with another round of showers possible tonight into tomorrow. Scattered thunderstorms producing gusty winds are possible.

The next upper trough moves into the northern Rockies on Wednesday and into the plains through Friday. This will lead to another round of showers, and with colder air with the trough, mixed precipitation is possible across much of the region Wednesday night into Thursday, particularly for elevated areas. Chances for at least 2" of snow have lowered significantly. Chances for 1" of snow are between 20 - 30% with highest chances along the Canadian border and east of Wolf Point.

FORECAST CONFIDENCE & DEVIATIONS:

Blended HRRR for day 1 winds, and 33% NBM90 for day 1-2 wind gusts. Lowered day 1 RH and raised max temperature.

Lowering confidence in snow accumulation with the colder system Wed-Fri.

AVIATION

LAST UPDATE: 2000Z

FLIGHT CAT RANGE: VFR - IFR

DISCUSSION: VFR conditions through the end of the day today with increasing low to mid level clouds ahead of a more significant round of showers tonight into tomorrow. Lightning is possible with these showers. MVFR conditions move west to east lowering KGGW after 10Z, KOLF after 13Z, and KGDV and KSDY after 14Z. IFR conditions may be met after 16Z over KGDV and KSDY.

WINDS: Gusty NW winds 15 to 20 kts slowly veer through the day today becoming east at 5 to 10 kts after 6Z.

GGW WATCHES/WARNINGS/ADVISORIES

None.