textproduct: Glasgow

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

- Areas of rain lasting through tonight. Overnight temperatures tonight and Monday are expected to be at or near freezing, coldest on Monday night.

- A Lake Wind Advisory is in effect through midnight tonight.

- Warmer conditions return middle to late next week.

DISCUSSION

WEATHER PATTERN OVERVIEW:

Upper troughing over much of the western CONUS will bring well below normal temperatures and areas of precipitation through the beginning of the work week. Precipitation will push east out of the region by Monday night. While thunderstorms are unlikely with this system, there is a brief period with 10 to 15 percent chance for thunder this afternoon.

Monday will be the coldest day of the week with high temperatures generally in the 40s and lows at or below freezing. With these cooler temperatures, make sure to protect sensitive vegetation.

The upper trough will continue to remain over the area after Tuesday, although a bit weaker than this weekend. This will likely allow shortwave troughs to sneak through the overall flow, bringing some isolated thunderstorm action to the area. Current model plumes suggest weak instability in the ~300 J/kg MLCAPE range during Wednesday afternoon, but low forecast RH may suggest it as a wind event.

FORECAST CONFIDENCE & DEVIATIONS:

Blended HiRes ARW and SREF for precip through tonight. Raised winds using HRRR and NBM90 for wind gusts.

AVIATION

LAST UPDATED: 0730Z

FLIGHT CAT RANGE: MVFR, IFR after 18Z

DISCUSSION: Low overcast skies with a majority of the rain showers pushing east out of TAF sites by this afternoon. KGGW and KOLF will see lingering rain showers through this evening. The chance of seeing a weak thunderstorm this afternoon is 10 to 15 percent, opted to leave it out of TAFs at this time.

WINDS: Cyclonically shifting wind following a low pressure system moving through the region. Winds become predominantly NNW at 15 to 20 kts after 18Z today.

GGW WATCHES/WARNINGS/ADVISORIES

Lake Wind Advisory until midnight MDT tonight for Central and Southeast Phillips-Central and Southern Valley-Garfield-McCone- Petroleum.

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