textproduct: Glasgow

KEY MESSAGES

- Midlevel clouds will increase by Thursday morning with isolated snow showers during the day.

- Milder temperatures and dry weather are expected for Friday with potentially very warm temperatures for Saturday.

- Cooler and unsettled conditions are likely late this weekend into early next week.

DISCUSSION

WEATHER PATTERN OVERVIEW:

Upper northwest flow over the region for Thursday will allow a shortwave disturbance to track southeast, resulting in increasing cloud cover while providing enough forcing for ascent for isolated snow showers.

Meanwhile, upper ridging will influence weather conditions for Friday into Saturday, with very warm temperatures expected to kick off the weekend. Latest NBM mean shows highs well into the 70s and 80s.

Late in the weekend into early next week, ensembles show growing consensus on a Pacific low pressure system and trough sending southwest upper flow over the Northern High Plains. Following initial shower and thunderstorm chances Saturday evening, look for rain at times possibly into early part of next week along with cooler temperatures following a cold front and lowering 500mb heights with the advancing trough pattern. Current NBM shows a broad 0.25 to 0.50 QPF range for much of NE Montana, with the greatest probabilities for significant rainfall amounts across the southwest zones such as Phillips, Petroleum, and Garfield Counties. FORECAST CONFIDENCE & DEVIATIONS:

NBM was largely followed this cycle given the lack of high impact weather expected over the short term, capturing broad expected trends very well. A nudge above the mean could be merited for Saturday afternoon eventually, depending on how quickly cloud cover advances later in the day which will become more apparent when higher resolution guidance become available in the short term. In short, confidence is above average on milder and drier weather unfolding through Saturday, as well as cooler and more unsettled weather to follow due to excellent ensemble consensus. However, there continues to be enough spread to confidently assess exact precipitation amounts or even thunderstorm locations on Saturday afternoon given the convective nature initially.

AVIATION

LAST UPDATE: 0400Z, Thursday April 8, 2026

FLIGHT CAT RANGE: VFR

DISCUSSION: Expect mid level clouds at times with an isolated snow shower possible on Thursday.

WINDS: Light and variable through the morning hours on Thursday, becoming northwest by 18Z at 5 to 15 kts.

GGW WATCHES/WARNINGS/ADVISORIES

None.