myiW Current Conditions and Forecasts Community Forums Buy and Sell Services
 
Hi guest · myAccount · Log in
 SearchSearch   ProfileProfile   Log in to check your private messagesLog in to check your private messages   RegisterRegister 
Imagery: NPH ridge, eddy & SW flow today and tomorrow.

 
Post new topic   Reply to topic    iWindsurf Community Forum Index -> Southwest USA, Hawaii, Mexico
View previous topic :: View next topic  
Author Message
windfind



Joined: 18 Mar 1997
Posts: 1899

PostPosted: Sun Jul 23, 2017 10:29 am    Post subject: Imagery: NPH ridge, eddy & SW flow today and tomorrow. Reply with quote

Hi Gang,

Below is a quick image of the factors behind the wind pattern today and tomorrow. The image is for Monday but today this pattern is already spinning up.

Notice huge North Pacific High lording over the Pacific with clockwise winds spiraling out from the high pressure.

Also note that extension coming from the North Pacific High pointing towards the Pacific Northwest and Canada. The shape of this ridge distorts the ocean winds west of the Bay Area so they are NNW rather than the typical NW.

This NNW flow, along with low pressure aloft, induces the counter-clockwise spinning Golden Gate Eddy you see in the imagery. And this in turn pushes SW wind into the Bay Area. And once it enters the Bay Area local topography and features like the pressure gradient to Sacramento or the Palo Alto Eddy will cause the wind to turn more SW or more WNW. But the overall flow is SW along the coast.

Mike Godsey
iwindsurf.com/ikitesurf.com
Weatheflow.com



nphEddy.jpg
 Description:
 Filesize:  183.99 KB
 Viewed:  6396 Time(s)

nphEddy.jpg


Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    iWindsurf Community Forum Index -> Southwest USA, Hawaii, Mexico All times are GMT - 5 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum

myiW | Weather | Community | Membership | Support | Log in
like us on facebook
© Copyright 1999-2007 WeatherFlow, Inc Contact Us Ad Marketplace

Powered by phpBB © 2001, 2005 phpBB Group