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Video: why the unending June Gloom in August?

 
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windfind



Joined: 18 Mar 1997
Posts: 1243
PostPosted: Mon Aug 05, 2013 1:26 pm    Post subject: Video: why the unending June Gloom in August? Reply with quote
Hi Gang,

If you are a Sherman Island, Berkeley, Pt. Isabel or Treasure Island kiter or sailor you are loving the frequent winds the last 10 days.

But if you are a Waddell, Crissy, Coyote & 3rd sailor or kiter you may have noticed the frequent lack of quality wind.

So I made this video blog explaining what is happening to our wind and weather.

http://blog.weatherflow.com/?p=14369

Mike Godsey
iwindsurf.com

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victor



Joined: 03 Aug 1998
Posts: 580
PostPosted: Mon Aug 05, 2013 9:47 pm    Post subject: Reply with quote
keep it coming. I've been on the water every day except one since july 3rd

i coulda been out the day i skipped.
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2bluehawaiins



Joined: 07 Mar 2002
Posts: 186
PostPosted: Mon Aug 05, 2013 10:26 pm    Post subject: why the unending June Gloom in August? Reply with quote
So why isn't the Delta blowing with all the fog?
Did it get to cold in the Sacramento valley?

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windfind



Joined: 18 Mar 1997
Posts: 1243
PostPosted: Tue Aug 06, 2013 9:15 am    Post subject: Re: why the unending June Gloom in August? Reply with quote
2bluehawaiins wrote:
So why isn't the Delta blowing with all the fog?
Did it get to cold in the Sacramento valley?


Short answer: There was a Golden Gate eddy yesterday and sometimes it pushes the surface wind SW deep into the Bay and over San Pablo Bay into the Delta which favors Sherman Island. Other times the eddy pushes the wind SSW which shunts much of the wind into Napa Valley stealing Sherman Island of its thunder.

Yesterday was weird since the eddy winds was SW at dawn so Sherman Island blew. Then mid morning the eddy winds turned SSW at San Pablo Bay and Sherman winds faded away. If you compare the wind graphs for Sherman Island and San Pablo Bay you can easily see the correlation.

At this point I can usually forecast the development of the Golden Gate eddy 12 hours in advance which tells you there is a good chance of Sherman Island winds. But so far I cannot determine if its winds will be SW or SSW. So your best bet before making the drive is looking at: 1. satellite imagery and see if there is a finger of fog moving into the Napa Valley... if so abort. 2. Look at the San Pablo Bay sensor graph is holding SW or showing SSW shifts. If it is SW you are probably safe to make the drive.

Mike Godsey
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