How this edition was made: Every sentence is generated from a dated BoatNerd, NOAA or NWS source field and checked against those stored facts before publication. The lead was chosen by fixed rules. Estimates are marked as estimates and positions change after their report time. Verify time-sensitive details with the original provider. Report a correction.
ALGOMA NIAGARA, downbound, was reported at Downbound 11 and 12 at 11:23 a.m. ET; BoatNerd estimates it at Vantage Point / Port Huron around 12:11 p.m. ET. That time is a BoatNerd estimate, not a confirmed arrival or lock transit. The latest BoatNerd passage lists for 7 watch points held 54 distinct vessels with reports from the last 24 hours.
Soo Locks: JOSEPH L BLOCK, upbound, was reported at 9 Mile Point at 11:16 a.m. ET; BoatNerd estimates it at Soo Locks around 12:13 p.m. ET. Its AIS destination field reads MARQUETTE. BLAIR MCKEIL, downbound, was reported at Soo Locks at 11:11 a.m. ET. Its AIS destination field reads CAWND. SHIRLEY ANN, downbound, was reported at Soo Locks at 10:28 a.m. ET. Its AIS destination field reads SAULT STE MARIE.
Port Huron / St. Clair River: DEFIANCE, upbound, was reported at Stag Island Upper at 11:09 a.m. ET; BoatNerd estimates it at Vantage Point / Port Huron around 11:54 a.m. ET. Its AIS destination field reads CALCITE. RT HON PAUL J MARTIN, downbound, was reported at Vantage Point / Port Huron at 10:18 a.m. ET. Its AIS destination field reads QUEBEC. ROBERT S. PIERSON, downbound, was reported at Vantage Point / Port Huron at 10:13 a.m. ET. Its AIS destination field reads ERIE.
Detroit River: MANITOULIN, downbound, was reported at Dossin Museum / Detroit at 11:24 a.m. ET. ALGOMA COMPASS, downbound, was reported at Algonac at 11:23 a.m. ET; BoatNerd estimates it at Dossin Museum / Detroit around 2:25 p.m. ET. Its AIS destination field reads SUPERIOR. CHI-CHEEMAUN, downbound, was reported at Crib Light at 11:21 a.m. ET; BoatNerd estimates it at Dossin Museum / Detroit around 12:25 p.m. ET. Its AIS destination field reads HAMILON.
Welland Canal: FULDABORG, inbound, was reported at Port Weller at 10:45 a.m. ET. Its AIS destination field reads US GRB. FLORENCE SPIRIT, inbound, was reported at Port Weller at 9:43 a.m. ET. Its AIS destination field reads DETROIT. ALGOMA EQUINOX, inbound, was reported at Port Weller at 5:53 a.m. ET.
Straits of Mackinac: Unknown, eastbound, was reported at Straits of Mackinac at 10:50 a.m. ET. Its AIS destination field reads UNKNOWN. MISS MARGY, eastbound, was reported at Straits of Mackinac at 10:41 a.m. ET. THREE SONS, westbound, was reported at Straits of Mackinac at 10:40 a.m. ET.
Duluth / Superior: AMERICAN INTEGRITY, inbound, was reported at Duluth Piers at 4:33 a.m. ET. Its AIS destination field reads DULUTH. STEWART J CORT, inbound, was reported at Superior Entry at 10:09 p.m. ET Oct. 20. Its AIS destination field reads SUPERIOR. HELIOS, outbound, was reported at Superior Entry at 8:04 p.m. ET Oct. 20.
Saginaw: no vessel reports from the last 24 hours were returned. That does not mean the waterway is empty.
Marquette C.G. (Lake Superior), NOAA station 9099018: 0.817 ft above Low Water Datum at 11:12 a.m. ET, preliminary data.
Holland (Lake Michigan), NOAA station 9087031: 1.585 ft above Low Water Datum at 11:18 a.m. ET, preliminary data.
Harbor Beach (Lake Huron), NOAA station 9075014: 1.253 ft above Low Water Datum at 11:18 a.m. ET, preliminary data.
Essexville (Saginaw Bay, Lake Huron), NOAA station 9075035: 1.388 ft above Low Water Datum at 11:12 a.m. ET, preliminary data.
Fairport (Lake Erie), NOAA station 9063053: 2.444 ft above Low Water Datum at 11:18 a.m. ET, preliminary data.
Oswego (Lake Ontario), NOAA station 9052030: 1.913 ft above Low Water Datum at 11:12 a.m. ET, preliminary data.
Each reading is one gauge above that lake's chart datum; it does not establish channel depth or vessel clearance.
Lake Superior, NWS forecast issued 10:00 a.m. ET: "A 30.4 inch high pressure over Quebec extending 30.1 inch ridging westwards over Lake Superior weakens to 30.2 inches today over New England and the Lower Great Lakes. Meanwhile, a weak 30.0 inch trough moves over the lake."
Lake Michigan, NWS forecast issued 9:38 a.m. ET: "A ridge of 30.3 inch high pressure is centered from the Mississippi River into Ontario this morning, resulting in light south to southwest winds across the open waters. Winds will trend light and variable tonight through Thursday night as the surface ridge nudges east toward the Ohio River and Quebec."
Lake Huron, NWS forecast issued 9:35 a.m. ET: "A weak and dry cold front will track through the central Great Lakes tonight. Another large high pressure, 30.40 inches, then builds over the area Thursday and Friday."
Lake Erie, NWS forecast issued 9:59 a.m. ET: "High pressure will maintain influence over Lake Erie for the next several days. The high will weaken to 30.20 inches today and Thursday, before re-intensfying to 30.40 inches over southern Ontario Thursday night into Friday."
Lake Ontario, NWS forecast issued 10:03 a.m. ET: "A high pressure ridge averaging 30.4 inches exits slowly toward the Canadian Maritimes before a weak cold front sweeps southeastward across the lake on Thursday. Behind the front, another ridge averaging 30.5 inches affects the lake through this weekend as the embedded high pressure center moves southeastward across the Great Lakes through Friday and then moves farther southeastward to Atlantic waters near Long Island and New Jersey by this Sunday."