textproduct: Grand Forks

KEY MESSAGES

- Risk for multiple rounds of severe storms starting late Saturday through at least Monday. All hazards are possible.

- Potential for heat impacts next week, including the Fourth of July weekend.

UPDATE

Issued at 642 AM CDT Sat Jun 27 2026

Showers and isolated thunderstorms are slowly moving into southeast North Dakota this morning, but is struggling to hold together as it moves into the area. We should see at least isolated shower activity later this morning through around midday as it lifts into eastern and northeastern North Dakota. Once this moves across the area, there will likely be a break in shower activity through the early to mid afternoon. Strong to severe storms are still in the forecast during the evening and overnight period. These storms will form in western and central North Dakota, then move into eastern North Dakota late this evening and overnight. The current outlook is largely consistent with previous versions, with hazards including 1 inch hail, damaging wind gusts to 75 mph, and possibly a tornado.

..Heat for the upcoming work week and holiday weekend

With upper heights rising over the Northern Plains, the ECMWF EFI shows a strong signal for above climo temperatures heading into next week. Probabilities from the NBM for highs above 90 degrees are over 70 or 80 percent for southern portions of our CWA on Monday, and chances are that high again for other days that week. Max wet bulb globe values are up into the high and extreme ranges for several days next week, and the extended range outlooks call for plenty of heat as we head into the Fourth of July weekend. Will start messaging heat impacts in our partner and public messaging.

AVIATION /12Z TAFS THROUGH 12Z SUNDAY/

Issued at 642 AM CDT Sat Jun 27 2026

VFR ceilings prevail at all TAF sites this morning, with a low chance for occasional MVFR ceilings early in response to light shower activity. VFR conditions are expected this afternoon prior to an increase in thunderstorm chances heading into the evening hours. Included a mention of thunderstorms for most sites late this evening as strong to severe storms could bring impacts to much of eastern North Dakota and portions of northwest Minnesota. Winds increase out of the southeast today, ranging from 15-20 knots sustained, with gusts up to 35 knots.

FGF WATCHES/WARNINGS/ADVISORIES

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