textproduct: Glasgow

DISCUSSION

KEY MESSAGES: - Although many locations are climbing out of the subzero temperatures, a few northern areas still have a Cold Weather Advisory in effect through 7 AM Monday.

- A weak ridging pattern is expected to bring temperatures near normal from Tuesday onward. WEATHER PATTERN OVERVIEW: The upper low over western North Dakota will slowly move eastward, so cloud cover and light snow shower activity is expected to exit by 6 PM tonight. A ridging pattern is expected to push into the area by Tuesday to bring temperatures above zero. A shortwave trough to the northeast of the area may come close enough to bring light snow to the far northeast on Wednesday into Thursday, but little to no snow accumulation is expected. Dry conditions are expected after Thursday as the ridge slowly breaks down.

FORECAST CONFIDENCE & DEVIATIONS: Increased winds with NBM90 in parts of Day 1 and Day 2. Increased PoPs slightly upward on Wednesday in the northeast part of the area.

There is moderate confidence in wind chills in the northern zones to stay around 25 below zero through 7 am. There is moderate to high confidence in temperatures through Friday. There is low confidence on light snow occurring on Wednesday in the northeast part of the area.

AVIATION

Expected Flight Category: VFR and MVFR

Synopsis: A low stratus deck over KSDY and KGDV are producing light snow showers with MVFR ceilings. As the low pressure system moves east, skies are expected to clear out and bring VFR conditions after 00Z for all TAF sites. This will continue throughout the entire TAF cycle.

Winds: Northwest winds 10 to 20 knots, becoming light and variable after 02Z. For KGGW after 02Z, southeast at 6 to 11 knots, becoming northwest at 5 to 10 knots after 20Z Monday.

GGW WATCHES/WARNINGS/ADVISORIES

Cold Weather Advisory until 7 AM MST Monday for Daniels-Northern Valley-Sheridan.