textproduct: Grand Forks

KEY MESSAGES

- There is a high chance for soaking rainfall late Sunday night into Monday across the region which could impact outdoor activities.

UPDATE

Issued at 403 AM CDT Sat Sep 12 2026

Expect a BKN CU deck to develop today with daytime heating in the northeast half of the fcst area where 850 mb moisture today will be higher. Northwest winds today 10-20 kts sustained gusts 25 kts. Highs in the 60s. Rain arrives overnight Sunday night into Monday as it moves in from the southwest. QPF probs from the NBM and WPC indicate chances for 0.50 inch or more at 70 percent or higher 00z Mon to 00z Tue. With clear sky much of Sunday night in parts of northwest MN (around Lake of the Woods and Red Lakes, did follow DLH and lowered lows a few degrees as some upper 30s in those areas are likely as winds will be calm.

..Late Weekend into Early Next Week Rainfall

A large upper low over the Pacific Northwest will propagate eastward towards the Northern Plains late Sunday into Monday. Very little instability appears in place, therefore severe weather is not expected. However, as the low tracks from southwest to northeast across the Northern Plains and Canadian Prairies, rainfall will overspread the region from west to east Sunday night, lasting into Monday. While there remains uncertainty in where the deformation band and heaviest rainfall will set up, with NBM probabilities for a half inch of rain is about 60 percent across the entire FA.

AVIATION /12Z TAFS THROUGH 12Z SUNDAY/

Issued at 619 AM CDT Sat Sep 12 2026

Northwest winds pickup pretty quickly today with mixed layer up to around 6000 ft agl where winds of 20-25 kts will mix down. 850 mb moisture and forecast soundings indicate a BKN CU field today north and east parts of the fcst area. Southern fcst area will see some CU but more in the way of altocu mid clouds. Winds diminsh quickly early this evening and become light overnight.

FGF WATCHES/WARNINGS/ADVISORIES

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