textproduct: Grand Forks

KEY MESSAGES

- Patchy fog and drizzle are expected through the early morning hours Saturday.

..Rain Today, Fog/Drizzle Tonight

Rain is slowly ending from west to east across southern reaches of the FA. In its wake, several observation sites are reporting drizzle. Soundings show saturation up to 2 Km in depth persisting into tonight with sufficient low level lift. Therefore, patches of drizzle and fog will remain a concern into Saturday morning. It is uncertain when stratus and drizzle will burn off Saturday morning, as for the most persistent locations (which are currently favored to be in far southeastern ND), it may take until the drier air behind the cold front comes through during the afternoon hours.

AVIATION /06Z TAFS THROUGH 06Z SUNDAY/

Issued at 1130 PM CDT Fri Sep 18 2026

Due to the surface pattern and light easterly BL flow tonight, continued increases in low level moisture should at least support an expansion of MVFR across the region with IFR impacts more likely at KDVL, KFAR, and KBJI. How far north and northeast IFR ceilings fill in along with coverage of fog/drizzle impacts remain much less certain tonight. KGFK and KTVF at least should see the arrival of MVFR and a low chance (30% or less) for IFR conditions.

On Saturday low level winds shift to the northeast and increase (12-15kt sustained), which should aid in clearing out/improving lower level conditions (ending any fog/drizzle). However, the cold pool aloft that will still be present should continue to support MVFR stratus or stratocumulus development and MVFR ceilings appear more likely to prevail into the afternoon Saturday before finally transitioning to VFR towards sunset.

FGF WATCHES/WARNINGS/ADVISORIES

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