textproduct: Grand Rapids

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

- Lake Effect Rain and Snow Showers

DISCUSSION

Issued at 208 AM EST Thu Nov 12 2026

- Lake Effect Rain and Snow Showers

Cyclonic flow continues across Lower Michigan through Saturday as an amplified omega block forms over the CONUS with upper troughing to the east and a sharp ridge to the west. Lake effect rain and snow showers will be confined to mostly near and off the Lake Michigan coast in north flow. Some light snow accums are possible across the northwest zones.

The blocking regime breaks down over the weekend and showers end as heights rise. The amplified riding flattens as it moves east bit should bring dry and mild weather into the middle of next week.

AVIATION /06Z TAFS THROUGH 06Z FRIDAY/

Issued at 208 AM EST Thu Nov 12 2026

MVFR with patchy IFR conditions can be expected overnight and into Thursday as low stratus clouds move through with lake effect showers mostly remaining over Lake Michigan. North to northeast winds around 10 knots overnight with some gusts to 20 knots on Thursday afternoon.

GRR WATCHES/WARNINGS/ADVISORIES

MI...None. MARINE...Small Craft Advisory until 7 PM EST Friday for LMZ844>849.

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