textproduct: Grand Rapids

KEY MESSAGES

- Strong Winds subside this morning

- Showers with ligh accumulations Monday

- Warm Weather Ahead

DISCUSSION

Issued at 330 AM EST Sun Dec 21 2025

- Strong Winds subside this morning

The northwesterly flow will continue this morning. However the gradient continues to slacken as the LLJ moves eastward. Will allow Gale and wind advisory to expire at 4 AM. High pressure will build over the region today with mild warm air advection. Highs will remain in the 20s.

- Showers with ligh accumulations Monday

A warm frontal boundary tomorrow wwith a negatively tilted mid level trough will allow for enough mosture and convection for snow showers, primarily north of the I 96 corridor. Moisture is limited so accumulations will be limited to an inch or less. The highest accumulations are possible along the US 10 corridor. As the warm front continues to lift to the north the showers will transition to a wintry mix then to a chance of rain Monday night. - Warm Weather Ahead

Temperatures continue to trend warmer through the week. A large Quasi stationary high located over the Gulf will dominate the pattern this week. There remains some zonal flow late in the week, however confidence is low on timing and QPF amounts. Rain remains possible Christmas Day. Temperatures through the week continue to trend above normal. However, they are trending slightly lower in recent runs. Temps on Christmas are ranging from around 40 along US 10 to the low 50s along the I 94 corridor. That equates to 5 to 15 degrees above normal respectively .

AVIATION /06Z TAFS THROUGH 06Z MONDAY/

Issued at 1115 PM EST Sat Dec 20 2025

Strong northwest with gusts 30 to 40 knots continue to move through the area behind the front. The higher end gusts will drop off after 6Z but winds still gust in the 20 to 30 knot range into Sunday morning. Cloud cover will expand with ceilings around 3500 to 4000 feet lowering to around 2000 feet. Some light snow and flurries will be possible. Any accumulations will be light with only a light dusting expected.

Winds weaken during the late morning with clouds scattering out as we head through Sunday afternoon and evening.

GRR WATCHES/WARNINGS/ADVISORIES

MI...Wind Advisory until 4 AM EST early this morning for MIZ037>040- 043>046-050>052-056>059. MARINE...Gale Warning until 4 AM EST early this morning for LMZ844>849.