textproduct: Grand Forks

KEY MESSAGES

- Chance for thunderstorms returns mid to late this week. This includes potential for strong to severe storms. There is a level 1 out of 5 risk for severe storms Thursday.

- Late summer heat forecast to return this weekend.

..Late summer-like heat this weekend

Ensemble guidance continues to strongly suggest in strong upper ridging into the Upper Midwest this weekend. This will promote increasing temperatures aloft, as well as the migration and pooling of moisture near the surface. This will not only allow opportunity for 90s back into the forecast, but also high humidity. As of now, Friday and Saturday look to be the days where these two may align to bring heat indices well into the 90s, and perhaps into the low 100s (20 percent chance of occurring). While Saturday looks to be hottest within the forecast period, this could also extend into Sunday, although confidence is low in this.

AVIATION /06Z TAFS THROUGH 06Z THURSDAY/

Issued at 1107 PM CDT Tue Sep 1 2026

Very little in the way of aviation impacts throughout the TAF period. However, if there were to be any impacts, they would occur Wednesday morning, as a few patches of fog may develop overnight. With high pressure creeping in, winds have already dropped below 5 knots area wide. If clouds can clear by sunrise, a few pockets of fog would not be surprising. However, confidence in where/duration of fog is low. Therefore, I did not add any mention into the TAF at this time. Beyond any fog Wednesday morning, the remainder of the morning and afternoon looks to bring beautiful flying weather, with no/few clouds, winds under 10 knots, and no wind gusts. These optimal conditions will prevail through the end of the TAF period.

FGF WATCHES/WARNINGS/ADVISORIES

ND...None. MN...None.