textproduct: Glasgow

DISCUSSION

KEY MESSAGES: - Band of snow will exit the region by early evening today.

- Dangerous cold wind chills as low as 35 below tonight into Sunday morning. Cold Weather Advisory for all of northeast Montana in effect through 11 AM Sunday.

- Return to seasonable temperatures Tuesday. WEATHER PATTERN OVERVIEW:

Gusty northwest winds following this morning's cold front will continue through tonight. Snow is expected to taper off in eastern Montana early this evening, with total accumulations for the day less than 1". With the higher winds, blowing snow may impact travel.

Temperatures behind the front are much colder as arctic high pressure descends into the northern plains. Today's high temperature of 32 was actually just shortly after midnight last night. Wind chills Sunday morning will be bitterly cold as low as -35 and some isolated regions approaching -40.

An upper ridge rebounds quickly to the west and a chinook develops, pushing temperatures back toward normal for next week. Fry weather is expected through the end of the forecast cycle.

FORECAST CONFIDENCE & DEVIATIONS:

Blended HRRR and NBM90 for day 1 winds, and 50% NBM90 for wind gusts. Blend of HiRes models for day 2 winds. Blended 50% NBM25 day1 min temps, 25% NBM25 day 2 max temps, 25% NBM25 day 2 min temps.

Low confidence in visibilities impacted by freezing fog, low stratus, blowing snow.

Today through tonight precip and temperatures: High confidence. Tomorrow through mid week temperatures: High confidence. Tomorrow through mid week precip: High confidence.

AVIATION

Expected Flight Category: As low as LIFR

Synopsis: Low stratus, patchy freezing fog, and blowing snow will continue at times throught the TAF cycle. Snow is expected to linger through the early hours of the evening. Intermittent reductions in visibility as low as 1/4SM are possible.

Winds: Northwest winds 20 - 30 kts will begin to lighten after 10Z. Light and variable winds are expected by 0Z Sunday.

GGW WATCHES/WARNINGS/ADVISORIES

Cold Weather Advisory until 11 AM MST Sunday for Central and Southeast Phillips-Central and Southern Valley-Daniels-Dawson- Eastern Roosevelt-Garfield-McCone-Northern Phillips-Northern Valley-Petroleum-Prairie-Richland-Sheridan-Southwest Phillips- Western Roosevelt-Wibaux.