mini-tornados at Coyote Pt...

From: Bob Prevett (prevett@shredder.esd.sgi.com-DeleteThis)
Date: Mon Mar 27 1995 - 11:19:10 PST


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From: "Bob Prevett" <prevett@shredder.esd.sgi.com-DeleteThis>
Message-Id: <9503271119.ZM10547@shredder.esd.sgi.com-DeleteThis>
Date: Mon, 27 Mar 1995 11:19:10 -0800
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To: wind_talk@opus.hpl.hp.com-DeleteThis
Subject: mini-tornados at Coyote Pt...
Cc: prevett@shredder.esd.sgi.com-DeleteThis
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This saturday at around 5pm I was cruising along on a starboard reach about
halfway in from the orange cone marker at Coyote when out of the corner of my
eye I see a bunch of spray kick up. Two little whirlwinds, each about 30 feet
tall and 10 feet wide were spinning around, were sucking up spray from the
waters' surface. They were moving about 10mph downwind on a collision course
with me! My first instinct was to unhook and prepare to get launched, but then
I realized I had enough speed to get by them. So, I rehooked and bore off on
broad reach and went past the little twisters. About 20 seconds later they
fizzled out.

My theory is that the whirlwinds were caused by a large plane that had just
landed about a minute before I saw them. Horizontal turbulence vortices from
the wing may had turned vertical and touched down.

Has anyone else ever experienced this phenomenon at Coyote Pt?

BobP

-- 
Bob Prevett (prevett@esd.sgi.com-DeleteThis)	Silicon Graphics Computer Systems
(415) 390-5315				M/S 2U-923



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