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 20, 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.
LIMNOS. Report: 9-20-2026 07:11 (source time). Reported location: Detour. Reported direction: Upbound. Estimated arrival: 9-20-2026 12:43 (source time; unconfirmed).
JOSEPH L BLOCK. Report: 9-20-2026 05:30 (source time). Reported location: Detour. Reported direction: Upbound. Estimated arrival: 9-20-2026 09:10 (source time; unconfirmed).
MOLLY M 1. Report: 9-20-2026 05:28 (source time). Reported location: Detroit River Light. Reported direction: Upbound. Estimated arrival: 9-20-2026 16:46 (source time; unconfirmed).
CSL NIAGARA. Report: 9-20-2026 07:29 (source time). Reported location: Detroit River Light. Reported direction: Upbound. Estimated arrival: 9-20-2026 15:06 (source time; unconfirmed).
ONTARIO VENTURE. Report: 9-20-2026 07:10 (source time). Reported location: Downbound 11 and 12. Reported direction: Downbound. Estimated arrival: 9-20-2026 12:22 (source time; unconfirmed).
ALGOMA HARVESTER. Report: 9-20-2026 07:23 (source time). Reported location: Algonac. Reported direction: Downbound. Estimated arrival: 9-20-2026 10:09 (source time; unconfirmed).
BBC BASEL. Report: 9-20-2026 07:27 (source time). Reported location: Port Weller. Reported direction: Inbound. Estimated arrival: 9-20-2026 07:27 (source time; unconfirmed).
ALGOSOLIS. Report: 9-20-2026 05:42 (source time). Reported location: Port Weller. Reported direction: Outbound. Estimated arrival: 9-20-2026 05:42 (source time; unconfirmed).
PEARL MIST. Report: 9-20-2026 07:01 (source time). Reported location: Straits of Mackinac. Reported direction: Eastbound. Estimated arrival: 9-20-2026 07:01 (source time; unconfirmed).
PAUL R TREGURTHA. Report: 9-20-2026 06:47 (source time). Reported location: Straits of Mackinac. Reported direction: Westbound. Estimated arrival: 9-20-2026 06:47 (source time; unconfirmed).
BLUE HERON. Report: 9-20-2026 05:48 (source time). Reported location: Bark Point. Reported direction: Upbound. Estimated arrival: 9-20-2026 09:57 (source time; unconfirmed).
FRONTENAC. Report: 9-20-2026 06:38 (source time). Reported location: Bark Point. Reported direction: Upbound. Estimated arrival: 9-20-2026 09:30 (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: 1.299 ft above local Low Water Datum. NOAA station 9076027; observed 2026-09-19 23:54 local standard time.
Chicago, Lake Michigan: 2.113 ft above local Low Water Datum. NOAA station 9087031; observed 2026-09-19 23:54 local standard time.
Harbor Beach, MI, Lake Huron: 1.821 ft above local Low Water Datum. NOAA station 9075002; observed 2026-09-19 23:54 local standard time.
Cleveland, Lake Erie: 2.864 ft above local Low Water Datum. NOAA station 9063053; observed 2026-09-19 23:54 local standard time.
Rochester, NY, Lake Ontario: 2.772 ft above local Low Water Datum. NOAA station 9052030; observed 2026-09-19 23:54 local standard time.
Station levels do not establish channel depth, vessel clearance or cargo capacity.
Lake Superior, NWS issued 2026-09-20T08:01:00+00:00. Source excerpt: Today and Monday, a 30.2 inch high over Manitoba builds to 30.4 inches as it moves into northwestern Ontario. This high pressure center slowly builds to 30.5 inches as it shifts into Quebec by midday Tuesday, trailing a 30.4 inch ridge over Lake Superior. The high builds further to 30.6 inches Wednesday as it progresses eastward. The high, still ov
Lake Michigan, NWS issued 2026-09-20T08:13:00+00:00. Source excerpt: Low pressure around 29.8 inches will move from southeast Iowa into the Ohio Valley today into Monday. Meanwhile, high pressure around 30.4 inches will strengthen and move east into Ontario today into Monday, then into Quebec for Monday night into Wednesday. Gusty northeast winds are expected today into tonight, becoming east and remaining gusty Mon
Lake Huron, NWS issued 2026-09-20T07:02:00+00:00. Source excerpt: A weak low pressure system follows a stalled front from the central Plains into the Ohio Valley this weekend. A broad area of high pressure then builds into northern Ontario and the northern Great Lakes Sunday into Monday.
Lake Erie, NWS issued 2026-09-20T07:44:00+00:00. Source excerpt: A low pressure system 29.90 inches will move along a stalled boundary today, moving a strong cold front southeast through the area. The lake will then remain between cool high pressure 30.40 inches to the north and a trough averaging 29.90 inches over the Ohio Valley through the middle of the week.
Lake Ontario, NWS issued 2026-09-20T08:02:00+00:00. Source excerpt: An 29.9 inch inverted trough draped from the Ohio Valley to New York State will drift southeastward and away from the lake this afternoon and tonight as a 30.4 inch high builds southeastward across Ontario Province. This high will then strengthen to 30.6 inches as it slowly drifts across Quebec through Thursday.