textproduct: Glasgow

KEY MESSAGES

- Scattered showers continue through tonight near the North Dakota border. - Warmer temperatures are expected beginning Friday with 80s and 90s for highs from Sunday through Tuesday.

- Chances for thunderstorms return by Tuesday.

DISCUSSION

WEATHER PATTERN OVERVIEW: An upper trough in NW flow has moved into the area, and is most prominent over the far east with the boundary nearly stalled. The western edge of shower activity is slowly moving into North Dakota, but will continue to straddle the border at times until Friday evening where an additional wetting rain is likely.

On Friday into the holiday weekend, an upper level ridge will build in to bring mostly clear and warm to hot conditions as high as the 90s on Memorial Day and Tuesday. There are elevated fire weather concerns at times starting Sunday based on winds coinciding with the hot/dry conditions. Considering the increase in recreation during this time, will consider messaging the relative heat and fire risk. Ensemble cluster analyses continue to differ on thunderstorm chances associated with some breakdown of the ridge by the middle of next week.

FORECAST CONFIDENCE & DEVIATIONS: Blended in short-term guidance for winds and precipitation chances through tonight.

Confidence is low for thunderstorms to occur until Tuesday, while high for the warmer than normal pattern starting Saturday.

AVIATION

LAST UPDATED: 1830Z

FLIGHT CAT RANGE: VFR.

DISCUSSION: A deck of broken mid level clouds is over the area, and is more focused over KSDY and KGDV which are just above MVFR at times with some -RA continuing prior to 09Z tonight. While the broken clouds remain over KSDY and KGDV most of Friday, clearing will occur to the west.

WIND: Northwest at 5 to 10 knots, light/variable at times overnight.

EQUIPMENT: KSDY obs are unavailable and will be AMD NOT SKED.

GGW WATCHES/WARNINGS/ADVISORIES

None.