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Ground swells
#112118
11/12/2016 11:18 AM
11/12/2016 11:18 AM
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Joined: Jul 2005
Posts: 256 42.99N 76.46W
jmon
OP
Traveler
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OP
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Joined: Jul 2005
Posts: 256
42.99N 76.46W
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Does anyone know of a reliable way to predict ground swells in CGB or CIBC short of waking up at 2AM and saying, "they're here!"? <img src="http://www.traveltalkonline.com/forums/images/graemlins/duh.gif" alt="" />
Jeff Tug William B
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Re: Ground swells
[Re: Kmon]
#112121
11/12/2016 02:23 PM
11/12/2016 02:23 PM
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Joined: Nov 2014
Posts: 1,049
StormJib
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The forecasts above should give you warning many hours before any swell coming from hundreds if not thousands of miles away. You also can give yourself greater buffer from real harm and risk of damage by never putting yourself as the inside row of boats. Deeper water provides a buffer, distance also provides you a buffer against a sudden change to a lee shore. I have never been in CGB when a sudden set of unsafe swell or surf showed up. I was in Salt Whistle Bay , Mayreau when the swell and surf showed up instantly. Most of the cats closest to the shore in shallow water ended up on the beach in single digit minutes. Middle of the afternoon! Several boats with the crew on the boats were incapable of saving themselves. The swell simply came in and put the boats on the beach. The boats in the middle of the bay where safe. I have been in White Bay shortly after a sudden storm where a boat was up on the rocks or beach. If any anchorage is wide open. You should always asked yourself why? If you see a sandy beach. Surf threw that sand up there. Someday the wind and waves will come along a throw a boat up there just like the sand.
Last edited by StormJib; 11/12/2016 02:49 PM.
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Re: Ground swells
[Re: StormJib]
#112122
11/12/2016 02:49 PM
11/12/2016 02:49 PM
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Joined: Feb 2006
Posts: 928
Fletch
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Posts: 928
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Re: Ground swells
[Re: Fletch]
#112123
11/12/2016 03:01 PM
11/12/2016 03:01 PM
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Joined: Nov 2014
Posts: 1,049
StormJib
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Here is a simple chart of Cane Garden Bay with North marked. One location in this anchorage may be the safest place to be with a sudden North swell. That same mooring or anchor spot could be a disaster if the swell shows up from a storm to the south or the west. Note: Settled weather so often referenced in the cruising guide does not translate to "good weather" or "favorable weather" it means conditions that will not change for the period in question. I edited this to try and be more clear. Local Sailor is correct in many of his statements. I was just trying to be clear in my personal experience. CGB is not protected. It is never the place to be in a North Swell. Some spots will give you more time to recover than others is my point. As to the buoy referenced. That single device will give you a heads up to a North Swell, But not a west or south swell from a different storm in a different location. Again my point is to give yourself space to recover from a change in conditions. The closer to the sand, the closer to the rock, the shallower the water. The less time your crew will have to recover to a change in conditions.
Last edited by StormJib; 11/12/2016 05:41 PM.
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Re: Ground swells
[Re: LocalSailor]
#112126
11/12/2016 06:05 PM
11/12/2016 06:05 PM
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Joined: Sep 2006
Posts: 5,678 An island state of mind
tradewinds
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Traveler
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Posts: 5,678
An island state of mind
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LocalSailor said: I disagree most wholeheartedly that Cane Garden Bay :
" A location in this anchorage may be the safest place to be with a sudden North swell."
That is contrary to my experience of 40 years of sailing here.
"I have never been in CGB when a sudden set of unsafe swell or surf showed up."
I certainly have and it is NOT a pleasant anchorage at that point. I wholeheartedly agree. CGB is one of the last places I want to be in a North swell.
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Re: Ground swells
[Re: wmangum]
#112129
11/13/2016 08:03 AM
11/13/2016 08:03 AM
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Joined: Jul 2005
Posts: 256 42.99N 76.46W
jmon
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OP
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Posts: 256
42.99N 76.46W
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<img src="http://www.traveltalkonline.com/forums/images/graemlins/Clapping.gif" alt="" />Thanks everyone - great advice. Gotta love TTOL
Jeff Tug William B
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