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.

..Heat this Week

In addition to thunderstorms, heat will be a concern heading into the upcoming week. Monday will likely bring the highest heat indicies as dew points in the 70s are advected into much of the FA. We cool down a bit on Tuesday, but persistent southerly flow will keep temperatures and dew points elevated all week, slowly rising each day from Wednesday through Saturday. at this time, ares in southeastern ND and west central MN have the highest chance of seeing heat advisory level impacts (heat indicies of 100 degrees or higher). It should be noted that even if afternoon temperatures barely reach criteria, overnight lows in the upper 60s to low 70s will likely provide very little relief from the heat.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 1252 PM CDT Sat Jun 27 2026

Thunderstorms will drive impacts throughout the TAF period. This afternoon, spotty thunderstorm activity will continue. However probabilities for impacts at any one TAF site were too low to include any PROB30s. As we go into tonight, a complex of thunderstorms will track from west to east across the region. This complex of storms will bring MVFR to potentially IFR ceilings, and a prolonged period of TS. Additional storms may form ahead of this complex, especially at KBJI, which makes the timing of thunderstorm activity more uncertain. Thunderstorms should clear out Sunday morning, but there is uncertainty in how long this activity lingers. In addition, even after TS clears, ceilings will likely remain mired in MVFR (a low chance of a few pockets of IFR as well). Additional thunderstorms may develop Sunday afternoon just beyond the end of this TAF period.

Of other importance to note, winds out of the southeast will gust up to to just over 30 knots for a few hours this afternoon at KFAR and KGFK. Winds will decrease after sunset. The complex of thunderstorms overnight may bring high winds, especially at KDVL and KGFK, but timing of this activity is very uncertain, along with the potential magnitude of the wind. Therefore, did not add a mention into this set of TAFs yet. It is likely that once predictability increases, a brief period of higher winds from the west will need to be added to a few terminals for some period of time between midnight and sunrise, especially at KDVL and KGFK.

FGF WATCHES/WARNINGS/ADVISORIES

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