Received: from zonker-fddi.hpl.hp.com by opus.hpl.hp.com with SMTP (1.37.109.8/15.5+ECS 3.3+HPL1.1) id AA18110; Fri, 8 Jul 1994 00:05:00 -0700 Return-Path: <poulton@zonker.hpl.hp.com-DeleteThis> Received: by zonker.hpl.hp.com (1.37.109.8/15.5+ECS 3.3+HPL1.1) id AA11619; Fri, 8 Jul 1994 00:04:50 -0700 Date: Fri, 8 Jul 1994 00:04:50 -0700 From: Ken Poulton <poulton@zonker.hpl.hp.com-DeleteThis> Message-Id: <9407080704.AA11619@zonker.hpl.hp.com-DeleteThis> To: wind_talk@opus.hpl.hp.com-DeleteThis Subject: Re: Coyote / 3rd
> Today (Thursday), I left 3rd at 400 pm with fairly marginal wind near shore
> to find solid 5.0 conditions at Coyote. It stayed steady until about 715
> when I left.
I sailed 3rd from about 4:00. I sailed 5.7/9'0 and had to slog all the
way to the channel to find planing wind. The wind stayed marginal until
5:00, when it picked up to maybe 5.2 and filled in all the way to the
shore. The wind direction was very northerly - I figure from my map
about 330. In fact, that's what SFO had:
1150 SFO 63 51 350 14 . 11 29.95 clr /few st f bnk w/
1250 SFO 64 51 330 18 . 20 29.93 clr /f bnk sw-nw/
1350 SFO 66 51 320 20 . 45 29.91 clr /f bnk sw-nw/ 814/
1451 SFO 65 51 330 20 . 45 29.9 clr /f bank nw/
1551 SFO 65 51 330 19 . 45 29.88 clr /f bank nw/st nw-n bases 7hnd
1650 SFO 63 51 330 22 . 40 29.87 clr /f bank nw/st nw-n/ 715 1600
1751 SFO 61 51 330 23 . 40 29.86 clr /f bank nw/st nw-n/
1850 SFO 59 52 340 19 . 40 29.87 6 sct /vsby lwr nw f/
Looking at my map, 330 blows from the San Bruno gap, over SFO and onto
the beach at Coyote. Did anyone at Coyote find northerly wind on the
beach and *less* wind a mile or two outside?
Figuring wind directions from the San Bruno gap, it appears that the San
Bruno stream is on shore by the time you get to 3rd, and maybe what we
had in the channel was coming from the Candlestick gap?? Was
Candlestick blowing?
I think I've seen this once before (a northerly direction at SFO causing
lousy wind at 3rd). Is this a known pattern? Something to keep in mind.
Ken Poulton
poulton@opus.hpl.hp.com-DeleteThis
"It is also a good rule not to put too much confidence in experimental
results until they have been confirmed by theory."
--Sir Arthur Eddington
This archive was generated by hypermail 2b29 : Mon Dec 10 2001 - 02:27:48 PST