textproduct: Glasgow

KEY MESSAGES

- Expect a hard freeze this morning with near normal temps for today.

- 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 half-week or so will be a lack of pacific moisture in the flow to squeeze out anything other than very light rain or flurries.

This morning expect a hard freeze as the cold air behind a front briefly settles in for about 12 to 24 hours and then leaves just as quickly this evening. With clear skies lows may drop slightly lower than projected along river valley bottoms.

On Saturday, warm high pressure over the desert SW 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 and snow showers moves in again during the next work week. However, ensemble groupings are focused on individual waves along the zonal flow which are all out of phase with each other. Subsequently precip appears one forecast and exist the next. Until these waves start to pin down to each other in the ensembles, confidene will be very low for any individual precip event.

FORECAST CONFIDENCE & DEVIATIONS: No Deviations this forecast cycle.

There is MODERATE confidence in temperatures through Monday.

There is LOW confidence in precip or temps Tuesday onward.

GAH

AVIATION

LAST UPDATE: 0430Z

FLIGHT CATEGORY: VFR

DISCUSSION: Skies are quickly clearing and VFR conditions are expected for the remainder of the TAF cycle once the last of the low clouds exits east from KSDY in the next few hours.

WIND: NW to W at less than 10 kts through the early morning. Light and variable mid-morning. Then becoming S at 5 to 15 kts late Friday morning through the afternoon and evening.

GAH

GGW WATCHES/WARNINGS/ADVISORIES

None.