Marine Weather Statement

Water level gauges on the St. Mary's River are indicating rapidly changing water levels due to thunderstorms in the vicinity of Whitefish Bay and the SOO locks.

Several cycles of water level falls and rises are likely between 10:30 PM and at least 2:30 AM perhaps longer. Largest changes in water levels...up to 3 feet or more...can be expected on upper portions of the river from Point Iroquois to the locks at Sault Ste. Marie. Water level changes up to one foot can be expected from below the Soo Locks to Munuscong Lake.

Mariners should be aware of rapidly rising and falling water levels...particularly for operators above the Soo Locks. Be sure to monitor marine radio for information on this situation.