textproduct: Grand Forks

KEY MESSAGES

- Seasonably cool and mild temperatures and mostly dry conditions are forecast through the weekend. Next appreciable chance for storms on Tuesday.

..Synopsis

Shortwave ridging dominates over our region between two upper troughs in Canada. This will keep our area under seasonably cool (but mild and comfortable) temperatures this weekend into early next week. There could be some patchy fog during the overnight/early morning periods under clear and calm conditions.

Next appreciable chance for showers and storms comes Tuesday as all ensemble guidance brings a shortwave trough through the southern tier of central Canada into Minnesota. Timing and evolution of the warm sector will dictate how strong or severe storms may be, but at this time, there are no appreciable signals for widespread severe weather.

Getting mid to late next week, upper ridging is forecast to build deeper into the Central CONUS with upper troughing in the Canadian Rockies and Northern Rockies. This will promote temperature trend back toward average to perhaps above average.

It is also worth mentioning that extended range ensemble and AI guidance migrate the aforementioned Rockies' upper trough eastward into the Northern Plains. An attendant upper jet max at the base of this trough is also expected to accompany this trough. With preceding upper ridging helping build instability and heat into the region, it is reasonable to believe that severe potential will increase, perhaps as early as next Saturday.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 349 PM CDT Sat Jun 20 2026

High confidence in VFR conditions through at least 09Z, with daytime cumulus diminishing by 01Z. There may be patchy fog that develops in northeast ND and northwest MN between 09Z-13Z Sunday morning, but confidence in impacts to TAFs are very low, and thus left it out of the TAF. Winds will be generally light, less than 10kt through the TAF period.

FGF WATCHES/WARNINGS/ADVISORIES

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