Sault Ste. Marie, MI Severe Weather Alertstar_ratehome

...WATER LEVEL FLUCTUATIONS ON THE ST. MARY'S RIVER...

Water level gauges at Point Iroquois and Southwest Pier on the St.
Mary's River have completed one rise/fall cycle since 1030 AM EDT,
and are currently undergoing the second rise/fall cycle. The
rise/fall amplitude at Southwest Pier was approximately 5.8 feet.
The trough at Southwest Pier is currently about 599 ft, higher than
the previous trough of about 596 ft at Noon. Thus, there is a
dampening of the rise/fall cycle. At Point Iroquois the total water
level change was 3.8 feet, with the current trough about a foot
higher than it was at its peak just before Noon.

Water levels are anticipated to undergo the rest of the rise/fall
cycle through approximately 600 PM EDT. Water levels are likely to
be dampened over the next few hours based on current data...with a
return to more normal levels, or not as significant fluctuations,
after 6 to 8 PM.

Water level changes below the Soo Locks have been around one-half
foot so far this afternoon and that is not likely to change.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Water level fluctuations of this magnitude can impact navigation
through the upper portions of the St. Mary's River...particularly
for large freighters.  Mariners should be aware of the rapidly
rising and falling water levels...particularly for operators above
the Sault locks.  Be sure to monitor marine radio for information on
this situation.

&&

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

* WHAT...Highest gusts up to 25 kts from the south.

* WHERE...St. Marys River Point Iroquois to E. Potagannissing
Bay.

* WHEN...From noon today to 8 PM EDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&