textproduct: Grand Forks

KEY MESSAGES

- Isolated strong thunderstorms may develop late Sunday afternoon and evening, with small hail and gusty winds the main threats.

- Well above normal temperatures arrive next week, with highs near daily records Monday and Tuesday.

- There is a chance for isolated strong thunderstorms each afternoon Monday through Wednesday.

UPDATE

Issued at 625 AM CDT Sun May 24 2026

Isolated thunderstorms are moving across parts of northwest Minnesota this morning, with patchy fog observed in the Red River Valley and areas to the west. Temperatures are in the upper 30s to upper 40s, with our warmest temps in the southern Red River Valley. CAMs and high resolution ensembles still show very little agreement regarding thunderstorm development this afternoon and evening; however, with good low to mid level lapse rates, as well as afternoon highs near the convective temps, isolated storms cannot be ruled out.

..Hot/summer-like temperatures early next week

There is minimal spread in guidance regarding highs with even the 25th percentile of NBM guidance in the middle to upper 80s Monday and Tuesday. 50th percentile values are already within a few degrees of daily records on Memorial day and on Tuesday are at or above (daily records generally 90-93F). Temperatures remain well above average through the rest of the week, though not quiet as warm late week (increasing spread due to less certainty of ridge strength).

AVIATION /12Z TAFS THROUGH 12Z MONDAY/

Issued at 625 AM CDT Sun May 24 2026

Patchy and intermittent fog and mist are being observed this morning, especially at KGFK and KDVL. KFAR could see a period of lower visibility as well during through around 14Z. Heading into midday, VFR conditions prevail at all TAF sites; however, there is a low chance for isolated thunderstorms this afternoon and evening. Confidence is quite low regarding where these storms could form in relation to the TAF sites. Spatial guidance is all over the map when looking at high resolution models, with some showing little to no chances for precip at all, and others developing storms across parts of eastern North Dakota and northwest Minnesota. Overall, risk remains low, but it is worth watching for amendments heading through the afternoon.

FGF WATCHES/WARNINGS/ADVISORIES

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