Source bulletin: Automatically assembled from dated source fields because the narrative edition was unavailable. No rejected AI draft is included. Report times and estimates are preserved; verify travel decisions with the original provider. Report a correction.
This is the September 21, 2026 source bulletin. The narrative edition did not pass its checks. These dated observations are assembled directly from source fields. Vessel positions may have changed since the listed report time; ETAs are estimates, not confirmed arrivals or lock transits.
JOHN G MUNSON. Report: 9-21-2026 00:07 (source time). Reported location: Downbound Keweenaw. Reported direction: Downbound. Estimated arrival: 9-21-2026 12:30 (source time; unconfirmed).
PEARL MIST. Report: 9-21-2026 03:10 (source time). Reported location: Detour. Reported direction: Upbound. Estimated arrival: 9-21-2026 08:17 (source time; unconfirmed).
MANITOULIN. Report: 9-21-2026 04:44 (source time). Reported location: Vantage Point / Port Huron. Reported direction: Downbound. Estimated arrival: 9-21-2026 04:44 (source time; unconfirmed).
JOHN J. BOLAND. Report: 9-21-2026 01:49 (source time). Reported location: Vantage Point / Port Huron. Reported direction: Upbound. Estimated arrival: 9-21-2026 01:49 (source time; unconfirmed).
MANITOULIN. Report: 9-21-2026 04:44 (source time). Reported location: Vantage Point / Port Huron. Reported direction: Downbound. Estimated arrival: 9-21-2026 10:20 (source time; unconfirmed).
BBC BASEL. Report: 9-21-2026 04:33 (source time). Reported location: South East Shoal. Reported direction: Upbound. Estimated arrival: 9-21-2026 08:37 (source time; unconfirmed).
VENTURE II. Report: 9-20-2026 18:00 (source time). Reported location: Port Weller. Reported direction: Inbound. Estimated arrival: 9-20-2026 18:00 (source time; unconfirmed).
SEA EAGLE II. Report: 9-20-2026 15:59 (source time). Reported location: Port Weller. Reported direction: Outbound. Estimated arrival: 9-20-2026 15:59 (source time; unconfirmed).
ALPENA. Report: 9-21-2026 04:18 (source time). Reported location: Straits of Mackinac. Reported direction: Westbound. Estimated arrival: 9-21-2026 04:18 (source time; unconfirmed).
LEE A. TREGURTHA. Report: 9-21-2026 00:46 (source time). Reported location: Straits of Mackinac. Reported direction: Westbound. Estimated arrival: 9-21-2026 00:46 (source time; unconfirmed).
POLAR BEAR. Report: 9-20-2026 17:24 (source time). Reported location: Superior Entry. Reported direction: Inbound. Estimated arrival: 9-20-2026 17:24 (source time; unconfirmed).
FRONTENAC. Report: 9-20-2026 09:47 (source time). Reported location: Superior Entry. Reported direction: Outbound. Estimated arrival: 9-20-2026 09:47 (source time; unconfirmed).
No dated vessel reports from today or yesterday were returned. This does not establish that the waterway is empty.
Sault Ste. Marie, Lake Superior: 1.329 ft above local Low Water Datum. NOAA station 9076027; observed 2026-09-20 23:54 local standard time.
Chicago, Lake Michigan: 1.995 ft above local Low Water Datum. NOAA station 9087031; observed 2026-09-20 23:54 local standard time.
Harbor Beach, MI, Lake Huron: 2.119 ft above local Low Water Datum. NOAA station 9075002; observed 2026-09-20 23:54 local standard time.
Cleveland, Lake Erie: 2.897 ft above local Low Water Datum. NOAA station 9063053; observed 2026-09-20 23:54 local standard time.
Rochester, NY, Lake Ontario: 2.779 ft above local Low Water Datum. NOAA station 9052030; observed 2026-09-20 23:54 local standard time.
Station levels do not establish channel depth, vessel clearance or cargo capacity.
Lake Superior, NWS issued 2026-09-21T08:01:00+00:00. Source excerpt: A 30.3 inch centered over southern Ontario this morning builds to 30.4 inches as it moves east toward the Ontario-Quebec border, resulting in veering flow from northeasterly to easterly of less than 20 knots over Lake Superior. The high slowly builds to 30.5 inches as it shifts into Quebec by midday Tuesday, trailing a 30.4 inch ridge over Lake Sup
Lake Michigan, NWS issued 2026-09-21T08:27:00+00:00. Source excerpt: High pressure around 30.4 inches north of Lake Superior today will shift eastward into Quebec tonight. The high will then largely remain in place through the middle of the week, while strengthening to around 30.7 inches. Gusty easterly winds are expected today into Tuesday, with east to northeast winds on Wednesday. A few gale force gusts may occur
Lake Huron, NWS issued 2026-09-21T07:04:00+00:00. Source excerpt: High pressure, 30.40 inches, over northern Ontario will build southeast early this week. This will lead to prolong moderate northeast winds over the central Great Lakes.
Lake Erie, NWS issued 2026-09-21T07:50:00+00:00. Source excerpt: Lake Erie will reside be between high pressure 30.40 inches to the north and low pressure 29.90 inches over the Ohio Valley for at least the first half of the week. High pressure 30.20 inches will expand south over Lake Erie Thursday night into Friday and persist through the weekend.
Lake Ontario, NWS issued 2026-09-21T08:02:00+00:00. Source excerpt: An expansive 30.4 inch high over Ontario Province will build east across Quebec and strengthen to 30.7 inches through Wednesday. The high will then slowly retrograde westward to the Upper Great Lakes and weaken to 30.4 inches Thursday and Friday while a 29.3 inch low develops and moves northward off the mid-Atlantic coastline.