textproduct: Grand Forks

KEY MESSAGES

- After a few showers and thunderstorms on Friday, temperatures will slowly warm to near 80 by late next week.

UPDATE

Issued at 630 AM CDT Fri Jun 19 2026

Showers continue to move from west to east this morning, with temperatures in the mid to upper 50s and light winds. Additional showers and thunderstorms are expected this afternoon, with a few strong to severe storms possible. Support for severe thunderstorms is greatest in west central Minnesota, where the strongest storms could bring hazards to include 1 inch hail and wind gusts to 60 mph. A few strong storms are possible in other areas as well, with small hail and wind gusts to 50 mph possible.

..Showers and Thunderstorms Friday

A wave propagating southeastward from Saskatchewan Thursday night quickly into Minnesota by Friday afternoon will be the trigger for shower and thunderstorm development beginning tonight. As the low swings through the FA late Friday morning into the afternoon, an airmass characterized by up to 1000 J/Kg of MUCAPE and 20 to 30 knots of effective shear will allow for showers and thunderstorms to blossom. The speed at which the low tracks through the FA will determine where the strongest thunderstorms initiate. A quicker low will whisk much of the instability eastward by afternoon, leaving all but our far southeastern counties with any chance for a stronger storm. A slower system would allow instability to remain over more of the region, and storms to develop further west, probably closer to the MN side of the Red River Valley. The best overlap in shear and instability in either scenario is in west central MN (Park Rapids, Detroit Lakes, Wadena, Fergus Falls areas). If a thunderstorm were to become strong to marginally severe, it would be in this region during the mid to late afternoon hours, with just sufficient speed shear for hail to be the primary threat. Therefore, the Storm Prediction Center has placed our far southeastern counties in a marginal, level 1 out of 5 risk for severe thunderstorms Friday afternoon.

AVIATION /12Z TAFS THROUGH 12Z SATURDAY/

Issued at 630 AM CDT Fri Jun 19 2026

MVFR to VFR conditions prevail this morning across the area. Scattered showers are bringing MVFR conditions to KFAR and KDVL; however, this could extend to other sites briefly during periodic shower activity through late this morning. Additional showers and thunderstorms are expected this afternoon. Most shower and thunderstorm activity will move to the east of the area by late this evening. Winds will remain out of the west to northwest through this evening before becoming tapering off during the late evening and overnight.

FGF WATCHES/WARNINGS/ADVISORIES

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