textproduct: Glasgow

KEY MESSAGES

- Expect a scattered light wintry mix this afternoon. - Cooler temperatures are expected today with a hard freeze tonight/Friday morning.

- Mild and dry conditions look to return for the weekend with light rain/snow possible early next week.

DISCUSSION

WEATHER PATTERN OVERVIEW: With warm hot high pressure in place over the Desert Southwest, this has brought and active zonal pattern to the International border including northern Montana. The problem over the next week or so will be a lack of pacific moisture in the flow to squeeze out anything other than very light rain or flurries.

A cold front has brought scattered rain showers south of the Missouri River this early this morning. While the initial showers will exit south early, a second wave of light rain and snow is expected this afternoon. Tonight/Friday morning expect a hard freeze as the cold air behind the front settles in for about 24 hours and then leaves just as quickly Friday.

A Lake Wind Advisory has been issued again for this afternoon and evening.

Beginning on Friday, warm high pressure rebounds, and higher than normal temperatures quickly return to our region for the weekend before being knocked down again by another weak cold front Monday night. More active weather with chances 10-50%) for light rain/snow showers moves in again next work week.

FORECAST CONFIDENCE & DEVIATIONS: Main deviations this evening were to the next 24 hours in order to get hourly CAMs data into PoPs, Sky, Wind, and Wind Gusts.

There is a high in gusty winds for a Lake Wind Advisory this afternoon and evening.

There is moderate confidence in temperatures through the next 5 days. There is high confidence in a freeze occurring Thursday morning, and a hard freeze occurring tonight/Friday morning.

GAH

AVIATION

LAST UPDATE: 0700Z

FLIGHT CATEGORY: VFR - MVFR

DISCUSSION: A cold front moved through the area last night. There is low (10-40%) confidence of rain showers occurring as a result of this disturbance at KSY and KGDV and therefore much is handled with Prob30s. Low/Fuel Loading MVFR clouds will be bouncing in and out of the area through the early morning hours. A second round of precip will arrive this afternoon with slightly higher chances (20-60%) for a rain-snow mix. Precip should exit all the terminals around 02Z this evening with clearing skies into the night-time hours.

WIND: N at 10 kts or less early this morning. Backing to the E late morning. Further Backing to the W to NW and increasing to 15 to 25 gust 30 kts Friday afternoon and evening. Calming to 10 kts or less by midnight Friday night.

GAH

GGW WATCHES/WARNINGS/ADVISORIES

Lake Wind Advisory from 2 PM this afternoon to 10 PM MDT this evening for Central and Southeast Phillips-Central and Southern Valley-Garfield-McCone-Petroleum.