textproduct: Grand Forks

KEY MESSAGES

- On Monday, a weak system will produce a Trace to 2 inches of snow across portions of northeastern North Dakota into northwestern MN.

- A stronger storm system arrives on Tuesday, bringing a wide range of potential winter impacts from accumulating snow and mixed precipitation to high winds.

- Much colder temperatures will arrive late week, with a 60% chance that wind chills drop to -30F or colder.

UPDATE

Issued at 928 PM CST Sun Dec 7 2025

Flurries to light snow have been observed across much of the area with patches of more moderate snowfall observed in the far south. The fast moving nature of this system pushes it out of the region within the next 3-6 hours, with clearing of precipitation from north to south. Low hanging stratus should linger overnight and limit significant drops in temperatures, although some clearing has been observed on satellite in the Devils Lake Basin. Regardless of cloud cover, impacts tonight will remain minor and tied to any light snowfall accumulations of a few additional tenths to up to an inch.

UPDATE Issued at 635 PM CST Sun Dec 7 2025

Light snow continues across eastern North Dakota and is slowly moving south-southeastward with time. Visibilities reamin above 1 mile for the most part, so impacts tonight will be mainly tied to any accumulations that develop. Accumulations are still generally expected to be at most an inch of snow, so impacts should remain fairly minor.

..Late Week Cold

The coldest air of the season will spill down from Canada to end the work week. NBM is already showing the probability for wind chills of -30F or lower (cold weather advisory criteria) at 60%. Uncertainty around where the deepest new snowpack will reside, cloud cover and winds will eventually determine how cold both temperatures and wind chills are able to fall.

AVIATION /00Z TAFS THROUGH 00Z MONDAY/

Issued at 519 PM CST Sun Dec 7 2025

Snow and low ceilings will be the primary hazards for the TAF period.

Light snow this evening may occur at DVL/FAR/GFK and briefly drop visibilities down, although light snowfall rates should prevent visibilities from falling to 1/2SM or lower. Ceilings will gradually lower overnight to at least MVFR with pockets of IFR, and will prevail there for the remainder of the TAF period. Brief rises to VFR are possible but the predominant flight category should remain MVFR/IFR.

Snow once again develops tomorrow, primarily impacting sites on the ND/MN border and eastward. Visibilities will fall to MVFR/IFR with a lower chance for LIFR at TVF/BJI depending on snowfall rates. Snow won't clear the MN TAF sites until after the end of the TAF period, but the heaviest snowfall should be east by the end of the TAF period.

Winds will shift from southerly to westerly as the snowfall ends with increases in magnitude to 10-15 knots sustained. Given the timing of the westerly winds, the expectation is for gusts to be limited since winds will increase around or after sunset.

FGF WATCHES/WARNINGS/ADVISORIES

ND...Winter Storm Watch from Tuesday morning through late Tuesday night for NDZ006>008-014>016-024-026>030-038-039-054. MN...Winter Storm Watch from Tuesday morning through late Tuesday night for MNZ001>005-007>009-013>017-022>024-027-028- 030>032.