textproduct: Grand Forks
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
- Overnight temperatures could drop into the low to mid 30s west of the Red River Valley tonight, and a frost advisory is in effect. Temperatures drop again to near freezing across all of eastern North Dakota and western Minnesota Tuesday night.
..Temperatures into the 30s tonight
Continued cold air advection pushes 850mb and even 925mb temps in some areas down below 0 C tonight. While skies will remain cloudy and there will be at least a little bit of mixing from northwesterly winds, temperatures look quite cold by tomorrow morning. NBM has probabilities 80 percent and higher for temperatures to get below 36 degrees, and even the less bullish HREF has 40 to 50 percent. With the clouds and wind do not think we will get down as low as the base NBM had us, so tweaked lows up a bit. We should stay above 32, but even with not much actual frost occurring the 33 to 36 degree range west of the Red River Valley could cause some issues to sensitive plants. Went ahead and matched neighbors for a frost advisory tonight. It does look to clear out and go light for winds tomorrow night, so better chances for freeze and frost look likely Wednesday morning.
AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/
Issued at 610 AM CDT Tue May 19 2026
Aviation conditions will improve through the day today as ceilings slowly lift and skies eventually clear out towards the evening. Expect generally IFR to MVFR ceilings this morning and afternoon with intermittent drizzle for all TAF sites, with the highest chances at GFK/TVF/BJI for more sustained precipitation. This will bring visibilities to 1-4SM at times, particularly this morning. Conditions will begin to dry out this afternoon with cloud cover becoming lower and ceilings gradually lifting. However, cloud decks remain expected to at least be below 5000 feet through 00z. Clear skies will eventually settle in towards the evening and overnight hours giving way to VFR conditions.
Winds will remain northerly through the day today, with gust potential increasing towards the afternoon hours, particularly in areas that see more sun. These will begin to diminish towards 00z and become generally light and variable after sunset through the end of the TAF period.
FGF WATCHES/WARNINGS/ADVISORIES
ND...Frost Advisory until 9 AM CDT this morning for NDZ006-007-014- 015-024-026-028-029-038-049-052-054. MN...None.
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