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
- Dry and warmer through Wednesday
- Chance of rain Thursday/Saturday, Mild
DISCUSSION
Issued at 254 AM EST Sun Nov 15 2026
- Dry and warmer through Wednesday
Latest IR loop shows most of the Lower Peninsula covered in a stratocu deck; 00Z raobs reveal a stout inversion around h85 that is trapping moisture underneath. Across the UP and southern Canada, drier air was working south skies were clearing. As the upper low to the east moves away, high pressure over the MS Valley will move over the Great Lakes and we'll see decreasing clouds this afternoon.
Temperatures will be on the upswing this week due to increasing heights aloft. H8 temperatures near -4c this morning will rise to +8 by Thursday. This will result in highs climbing from the mid 40s today to upper 50s by Thursday.
- Chance of rain Thursday/Saturday, Mild
The next chance (around 30 percent) of rain arrives Thursday as a weak cold front moves through. There's virtually no cold air behind this front and the low associated with it is north of Lake Superior. Thus, that 30 PoP over the northwest CWA Thursday may be generous.
The larger focus comes over the weekend, when a high amplitude trough over the West Coast move east. That wave is progd to phase with a short wave dropping south from Canada and producing a deeper low over the upper MS Valley. The cold front associated with that low will then move east late Saturday. That means a very mild day Saturday...highs in the lower 60s, before showers move through ahead of the front.
AVIATION /06Z TAFS THROUGH 06Z MONDAY/
Issued at 1240 AM EST Sun Nov 15 2026
IR loop shows abundant clouds across the region, but some clearing near the lake shore. 00Z raobs indicate a pronounced inversion around h85 that is trapping moisture below it which is leading to a bkn/ovc MVFR deck.
The large upper low is slowly moving east, but still has a firm grip on cloud cover across the terminals. Look for MVFR cigs into the afternoon before clearing late in the day.
GRR WATCHES/WARNINGS/ADVISORIES
MI...None. MARINE...None.
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