textproduct: Grand Rapids

KEY MESSAGES

- Warm and Dry Much Of The Week, Elevated Fire Danger Through At Least Monday

- Shower and Thunderstorm Chances Return Friday

DISCUSSION

Issued at 238 AM EDT Sun May 31 2026

- Warm and Dry Much Of The Week, Elevated Fire Danger Through At Least Monday

A dry ambient airmass and surface ridging will continue to promote dry conditions across the area for much of the week. Models suggest high confidence in this through Thursday with little spread in guidance. While 850mb temps cool to near 8C with the passage of a trough early in the week, highs in the 70s will start the week, warming into the 80s late week as 850 mb temps climb to the mid teens. Winds will gust up to 15-25 mph at times. This will lead to increased fire danger. See the Fire Weather section for more details.

- Shower and Thunderstorm Chances Return Friday

The arrival of a low pressure system, and passage of a cold front across the Central Great Lakes, will bring showers and thunderstorms into the forecast. This will be aided in the upper-levels by the breakdown of the omega block pattern across the area of late, resulting in shortwaves driving forcing across the area. At least marginal MUCAPE supports a thunder risk, though uncertainty as to the timing/placement of frontal features supports some variance in forecast solutions by late week.

AVIATION /12Z TAFS THROUGH 12Z MONDAY/

Issued at 626 AM EDT Sun May 31 2026

No significant changes to the going forecast. Predominantly light and variable winds are expected beginning later this morning. By early afternoon, winds will become westerly at MKG as a lake breeze develops, increasing to around 10 knots. Only high clouds are expected through the TAF period, with high confidence in VFR given the dry ambient airmass.

MARINE

Issued at 238 AM EDT Sun May 31 2026

Weak, primarily lake breeze driven, winds are expected today with hazardous winds and waves not expected. Short range model guidance suggests winds to 15-20 knots are possible, particularly near the points. Wind direction does not appear favorable for advisory level waves at this time. High pressure overhead then tempers winds going into mid- week.

FIRE WEATHER

Issued at 238 AM EDT Sun May 31 2026

Elevated fire danger conditions are expected at least Sunday and Monday. Wind gusts of 15-25 mph along with MinRHs in the 20s will support an increased concern for wildfires. The greatest risk will be across the conifer forests of Central Lower Michigan, along and north of a Muskegon to Clare line. Given no rainfall is expected until at least Friday, elevated fire danger conditions may continue into mid-week.

GRR WATCHES/WARNINGS/ADVISORIES

MI...None. MARINE...None.