Received: from opus.hpl.hp.com by jr.hpl.hp.com with ESMTP (1.37.109.24/15.5+ECS 3.3+HPL1.1) id AA189536831; Wed, 30 Jun 1999 22:27:11 -0700 Return-Path: <geohaye@hotmail.com-DeleteThis> Received: from hplms26.hpl.hp.com by opus.hpl.hp.com with ESMTP (1.37.109.24/15.5+ECS 3.3+HPL1.1) id AA243766824; Wed, 30 Jun 1999 22:27:04 -0700 Received: from hotmail.com (law2-f249.hotmail.com [216.32.181.249]) by hplms26.hpl.hp.com (8.9.1a/HPL-PA Relay) with SMTP id WAA03943 for <wind_talk@opus.hpl.hp.com-DeleteThis>; Wed, 30 Jun 1999 22:27:04 -0700 (PDT) Received: (qmail 93884 invoked by uid 0); 1 Jul 1999 05:26:06 -0000 Message-Id: <19990701052606.93883.qmail@hotmail.com-DeleteThis> Received: from 209.244.99.95 by www.hotmail.com with HTTP; Wed, 30 Jun 1999 22:26:05 PDT X-Originating-Ip: [209.244.99.95] From: George Haye <geohaye@hotmail.com-DeleteThis> To: wind_talk@opus.hpl.hp.com-DeleteThis Subject: Playing TWISTER at Coyote Date: Wed, 30 Jun 1999 22:26:05 PDT Content-Type: text/plain; format=flowed
One of the things Ken Poulton added to the list of impacts of the SFO
Airport exansion was:
> Occasional violent turbulence (small 40+ knot "twisters") at water
>level.
I have witnessed these several times at Coyote and not everyone even
believes me when I tell them. Basically, the twister just leaves the airport
area and works it's way downwind -- a swirl of blasting winds, probably
40-50 mph, maybe more. I've been completely wasted by these things a couple
of times. The sail just rips out of your hands and you get thrashed. And,
you can't always be looking over your shoulder to see if a twister is coming
-- that's no way to windsurf!
Has anyone else had experience with these at Coyote? And, Ken and whoever
else, what exactly causes them do you think? Is it planes firing the engines
on full to speed up for take off, or what? Is it somehow related to
landings? (If that's the case, the runway expansion could in turn extend the
"tornado alert zone" to include the channel out from Seal Point.)
-George
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