textproduct: Grand Forks

KEY MESSAGES

- Heat indices low 90s to low 100s today, highest in Red River valley where a heat advisory is in effect this afternoon and early evening. - There is a level 1 out of 5 risk for severe storms Thursday, with 1 inch hail and wind gusts to 60 mph the main impacts expected.

UPDATE

Issued at 552 AM CDT Wed Jul 29 2026

One area of mid clouds in SE Manitoba generated a few t-storms that are starting to drift east over Angle Inlet so added some low pops there. Otherwise patchy ground fog but it is very patchy and low lying unlike yesterday.

Coord with WFO BIS and other offices and no changes from thinking yesterday afternoon regarding heat advisory headlines. Kept it out for the RRV Fargo on north as this is where heat indices will be confidently around 100.

..Marginal severe risk on Thursday

Many of the CAMs break out some convection along the MT/ND border Wednesday afternoon, then move it east Wednesday night. There is a low chance that some of the cells will be holding together by the time they reach far western Benson county early Thursday morning, but many of the model runs just have the convective complex decreasing in intensity. Whether we get any convective redevelopment in the afternoon along the trough axis will depend on how exactly the morning plays out. At this point, the 50th percentile has 1000-2500 J/kg of CAPE over all but our far northwestern counties Thursday afternoon, although deep layer shear is fairly mid, around 25 to 30 kts at most. Still, can't rule out some isolated severe cells so will continue with a marginal risk for Thursday.

AVIATION /06Z TAFS THROUGH 06Z THURSDAY/

Issued at 552 AM CDT Wed Jul 29 2026

Patchy ground fog around and of course it shows up at BJI AWOS. Kept low vsby there thru 13z may have to go another hour. It is low lying and will burn off quick. Otherwise scattered mid clouds today, mid level CU. Winds mainly south 5 to 15 kts into tonight, brief periods of southwest wind direction west of the valley. Chance of showers or t-storms move into DVL region midnight or so.

FGF WATCHES/WARNINGS/ADVISORIES

ND...Heat Advisory from 1 PM this afternoon to 9 PM CDT this evening for NDZ008-016-027-029-030-039. MN...Heat Advisory from 1 PM this afternoon to 9 PM CDT this evening for MNZ001>004-007.