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Hazardous Seas Warning
ActiveColumbia River Bar
Starts
Ends
Issued
Severity
Moderate
Urgency
Expected
Certainty
Likely
Details
* WHAT...For the Gale Warning, seas around 14 ft at 12 seconds and south winds 25 to 30 kt with gusts up to 40 kt. For the Hazardous Seas Warning, very steep and hazardous seas 14 to 15 ft at 14 seconds and south winds 20 to 30 kt with isolated gusts up to 35 kt expected.
* WHERE...In the Main Channel of the Columbia River Bar.
* WHEN...Gale Warning, until 4 PM PST this afternoon. Hazardous Seas Warning, from 4 PM this afternoon to 4 AM PST Thursday.
* IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.
* ADDITIONAL DETAILS...Ebb current of 2.98 kt at 528 AM Wednesday. Seas 12 to 13 ft. Strong ebb current of 5.66 kt at 531 PM Wednesday. Seas 13 to 17 ft. Ebb current of 2.71 kt at 605 AM Thursday. Seas 12 to 13 ft.
Instructions
A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels. It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions.
Data from the National Weather Service
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