NWS Small Craft Advisory for Lake Michigan Nearshore: Wednesday, July 22 End Times Vary by Zone (Sheboygan to Port Washington vs. North of North Point Light)
Sheboygan County Weather Watch — July 21, 2026
The National Weather Service (NWS) Milwaukee/Sullivan says the Small Craft Advisory for Lake Michigan nearshore waters continues into Wednesday, July 22, but the end time depends on your marine zone.
LMZ643-644: ends Wednesday morning (7:00 AM CDT)
For LMZ643-644 — Sheboygan to Port Washington and Port Washington to North Point Light — the advisory remains in effect until 7:00 AM CDT Wednesday, July 22. NWS warns that conditions will be hazardous to small craft.
LMZ645-646: ends Wednesday afternoon (4:00 PM CDT)
For LMZ645-646 — North Point Light to Wind Point and Wind Point to Winthrop Harbor (IL) — the advisory remains in effect until 4:00 PM CDT Wednesday, July 22. NWS also notes that conditions will be hazardous to small craft.
Practical takeaway for boaters and shoreline travelers: before you launch or plan an extended nearshore outing on Wednesday, July 22, confirm the latest NWS nearshore advisory/forecast for your exact zone—since the hazard ends at 7:00 AM CDT for LMZ643-644 and at 4:00 PM CDT for LMZ645-646.
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