textproduct: Grand Rapids

KEY MESSAGES

- Severe chances through this evening

- Light freezing rain possible early Thursday

- Additional storm chances Thursday and Saturday

DISCUSSION

Issued at 303 PM EDT Tue Mar 31 2026

- Severe chances through this evening

Still keeping an eye on a line of storms just working into the northern part of the county warning area this afternoon. This line will slowly work south and east over the next few hours. Winds and hail continue to be the main threats for this afternoon and evening - with the threat being mostly over by 8-9pm or so for west Michigan.

- Light freezing rain possible early Thursday

Big weather maker works through the western Great Lakes Region late Wednesday with southern lower Michigan remaining mainly in the warm sector Wednesday night into Thursday. Recent model trends have been pulling this low track a little further to the northwest with the colder air having a harder time getting into central Michigan. This would keep the greatest impacts in Wisconsin and the Upper Peninsula with an overall decreasing trend in potential for freezing rain in the CWA compared to yesterday. Some light ice accumulation may still occur in our far northern counties...especially the slightly higher terrain in Osceola and Clare Counties and maybe even eastern Lake County...so that will have to be watched for a potential winter weather advisory for late Wednesday night into early Thursday. Would expect brief impacts mainly between 4am and 11am Thursday if ice materializes before temperatures warm through the day.

- Additional storm chances Thursday and Saturday

Active pattern continues into the weekend - with additional chances for storms Thursday and Saturday. Some severe weather possibilities exist for both days with Saturday starting to look like a potentially greater risk than late Thursday.

Storms aside - there will be a decent amount of rain this week between today and Saturday. This should result in some rises on area rivers and potentially some minor flooding in trouble spots late this weekend into early next week.

AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/

Issued at 154 PM EDT Tue Mar 31 2026

Latest radar has storms streaming across the region with periods of TSRA expected at all TAF sites this afternoon. The best chance for storms will be at MKG, GRR, BIV and BTL. There remains a chance for showers and storms at LAN and JXN, however it will be slightly more scattered as the line moves into central Michigan. Expect periods of IFR and lower cigs and vsbys with wind gusts of 30 to 40 kts in and around thunderstorms. Have adjusted tempo groups for the TAF sites to adjust for latest timing of storms. The main line will move eastward between 00Z to 02Z. Have Prob30's for LAN, JXN for this time. IFR ceilings will be most dominant between 00z and 04z. Overnight a slight improvement to MVFR will likely occur.

MARINE

Issued at 302 AM EDT Tue Mar 31 2026

Hazardous winds and waves for small craft are expected much of this week. The current SCA goes through 12Z Wednesday. There will be a possible lull on Wednesday. Winds and waves will pick up again Wednesday night and persist into the weekend,

GRR WATCHES/WARNINGS/ADVISORIES

MI...None. MARINE...Small Craft Advisory until 8 AM EDT Wednesday for LMZ844>849.