textproduct: Grand Forks

KEY MESSAGES

- Areas of fog today and Thursday morning.

- There is a 20% chance for advisory impacts from a wintry mix Thursday into Friday.

- A more active pattern may continue into next week bringing additional opportunities for winter impacts over parts of the region. Predictability in impacts remains very low beyond Friday.

..The Weekend and Beyond

Southwesterly flow brings another wave into the Upper Midwest Friday/early Saturday. The GFS and its ensemble members remain further north and stronger with this system, while the Canadian and European ensemble suites are further south/weaker. The most likely area to see any impacts would be our southern FA Friday afternoon into the overnight, but at this time there remains significant uncertainty in where/if any will occur. Behind this system, a return to zonal flow brings a surge of warmer Pacific air. A few weak waves are shown by various model guidance early in the week, but there is little agreement in each features placement/timing/strength. There is broader agreement in a larger system within our region towards the middle of next work week. However, there remains considerable spread in potential scenarios regarding the systems final evolution.

AVIATION /18Z TAFS THROUGH 18Z THURSDAY/

Issued at 1143 AM CST Wed Mar 4 2026

Significant aviation impacts are anticipated over the next 24 hours. Fog, low visibilities and low ceilings will all result in periods of IFR/LIFR. FZFG has been persistent at KDVL, KTVF and KGFK this morning. Prevailing to periods of FZFG will continue through the early to mid afternoon hours. As FZFG improves at northern terminals this afternoon into the evening, ceilings will remain at IFR. Further south, KFAR and KBJI, where its currently VFR, will see IFR to LIFR fill back in after sunset. This IFR/LIFR period will continue through the end of the TAF period (potentially even longer at some terminals), as fog will be slow to burn off/clear out. Visibilities below airfield minimums are possible early Thursday at all TAF sites. This persistent pattern of LIFR/IFR will likely continue into the end of the work week.

FGF WATCHES/WARNINGS/ADVISORIES

ND...Dense Fog Advisory until 3 PM CST this afternoon for NDZ014>016-026-027-029-030-054. MN...Dense Fog Advisory until 3 PM CST this afternoon for MNZ001- 007-008-013-014.