Re: [Paddlewise] more like "wave heights" but was pressurize the boat

From: Dave Kruger <kdruger_at_pacifier.com>
Date: Tue, 03 Apr 2007 18:57:11 -0700
mike dziobak wrote:

> Check out this forecast for the inshore waters south shore Lake
> Superior:

> NATIONAL WEATHER SERVICE MARQUETTE MI 533 PM EDT TUE APR 3 2007 FOR
> WATERS WITHIN FIVE NAUTICAL MILES OF SHORE LSZ241-242-040600- .WED...N
> GALES TO 40 KT. SNOW SHOWERS. WAVES BUILDING TO 20 TO 25 FT. .WED
> NIGHT...NW GALES TO 35 KT. SNOW SHOWERS. WAVES 20 TO 25 FT.

> I can't find my wind speed/wave height tables but is this even possible 
> with only 40 kt gales?

Yes.  With sufficient fetch, the "observed average" produced by a sustained 
35 knot gale runs about 20 ft [Bascom; Waves and Beaches; 1980 version; 
page 48].  I suspect the "observed average" relates closely to the 
"significant wave height" figure given by the buoy reports.

-- 
Dave Kruger
Astoria, OR
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Received on Tue Apr 03 2007 - 18:57:16 PDT

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