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Old 09-09-2019, 17:43   #1
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Hurricane Dorian probably whipped up a 100-foot rogue wave near Newfoundland

Anyone hear about this? You'd think with this happening so close to shore, someone might have seen its impact.

https://www.washingtonpost.com/weath...-newfoundland/
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Old 10-09-2019, 05:56   #2
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Re: Hurricane Dorian probably whipped up a 100-foot rogue wave near Newfoundland

"Dorian whipped up a 100-foot rogue wave. A buoy owned and operated by the Marine Institute at Memorial University of Newfoundland recorded the monster wave Saturday night, while winds gusting above 60 mph struck the area. ... A 100-foot wave is taller than an eight-story office building."
all over google search... sources everywhere. wapo places a restriction on their posts, so i google. wapo provided graph, also, but it doesnot cut n paste to here. oopsy.
https://www.niagarafallsreview.ca/ne...-newfoundland/
dorian a cane to remember.
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Old 10-09-2019, 06:19   #3
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Re: Hurricane Dorian probably whipped up a 100-foot rogue wave near Newfoundland

Its unlikely that wave made it to shore, or even existed for very long. Rogue waves form when multiple smaller waves combine into a monster - but the constituent parts are not moving at the same speed or direction, so they don't tend to last long.

Bad luck is being in your boat where one forms up...


These waves have likely always been around, but the increasing numbers of buoys with the ability to sense them means we're just now finding out how common they really are.


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Old 10-09-2019, 15:58   #4
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Re: Hurricane Dorian probably whipped up a 100-foot rogue wave near Newfoundland

[QUOTE=Hartleyg;2973598]Its unlikely that wave made it to shore, or even existed for very long. Rogue waves form when multiple smaller waves combine into a monster - but the constituent parts are not moving at the same speed or direction, so they don't tend to last long. /QUOTE]

The article says that the rogue wave you're referring to when multiple waves combine into one large wave is called interference. There's no way to know but this one might have been created by both bathymetry (typical for natural big wave area) and interference. The article says:

"Given how relatively close this measurement was recorded to shore, odds are that this wave may have been helped along by two processes: bathymetry and interference. “The Cabot Straits bathymetry is varied, with the Laurentian Channel creating a deep trench through its metre,” explained Walsh, “and comparatively shallow coastal waters closer to Newfoundland and Cape Breton Island.” While these conditions are impossible to validate, Walsh said that these conditions have been known to foster the development of these rare rogue waves before.

In which case, I'd expect that someone standing on shore would have noticed....
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Old 10-09-2019, 17:21   #5
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Re: Hurricane Dorian probably whipped up a 100-foot rogue wave near Newfoundland

Quote:
Originally Posted by gamayun View Post

In which case, I'd expect that someone standing on shore would have noticed....
I don't know what the population density is for that particular part of the Newfoundland coastline, but i doubt anyone would have been standing on the shoreline in that weather at around midnight....



As Hartleyg says, waves like that don't usually maintain that height for long and i doubt it would have been near 100ft by the time it reached shore, if it even did, there is no information contained in the article on which way it was travelling...
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Old 11-09-2019, 03:23   #6
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Re: Hurricane Dorian probably whipped up a 100-foot rogue wave near Newfoundland

Dorian kicks up more than one monster wave near Port aux Basques
Several waves exceeded 25 metres (82 feet), and many more which broke 20 metres in height (65 feet), about 2.4 kilometres off of the Newfoundland coast at Port aux Basques. (SW tip of NL)
https://www.cbc.ca/news/canada/newfo...wave-1.5277354


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