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Pacific Storm and Surf Forecast
Updated: November 13, 2008 8:32 PM
Buoys: Northern CA - Southern CA - Hawaii - Gulf of Alaska - Pacific Northwest
Buoy Forecast:
Northern CA - Southern CA - Hawaii - Gulf of Alaska - Pacific Northwest
Pacific Links:  Atmospheric Models - Buoy Data - Current Weather - Wave Models
Forecast Archives: Enter Here
A chronology of recent Mavericks Underground forecasts. Once you enter, just click on the HTML file forecast you want to review (e.g. 073199.html equals July 31, 1999). To view the maps that correspond to that forecast date, select the html file labeled 073199 maps.html
Swell Potential Rating = 3.5 - California & 3.0 - Hawaii
Using the 'Winter' Scale
(See Swell Category Table link at bottom of page)
Probability for presence of largest swells in near-shore waters of NCal, SCal or Hawaii.    
Issued for Week of Monday 11/10 thru Sun 11/16
Swell Potential Rating Categories
5 = Good probability for 3 or more days of Significant swell
4 = Good probability for 1-2 days of Significant swell
3 = Good probability for 3 or more days of Intermediate/Advanced swell
2 = Good probability for  1-2 days of
Intermediate/Advanced swell
1 = Good probability for 3 or more days of Impulse or Windswell
0 = Low probability for 1-2 days of Impulse or Windswell   

Dateline Swell Hits Hawaii
Moving Towards California

 

New Swell Classification Guidelines (Winter)

Significant: Swell 8 ft @ 14 secs or greater (11+ ft faces) for 8+ hours (greater than double overhead)
Advanced: Swell and period combination capable of generating faces 1.5 times overhead to double overhead (7-10 ft)
Intermediate: Swell and period combination generating faces at head high to 1.5 times overhead (4-7 ft)
Impulse/Windswell: Swell and period combination generating faces up to head high (1-4 ft) or anything with a period less than 11 secs.

PACIFIC OVERVIEW
On Thursday (11/13) North/Central California was getting a 1-3 ft overhead raw mix of local windswell and background swells coming from the Gulf of Alaska. Southern California continued getting a minimal mix of northwest swell in the waist high range and southern hemi background swell about the same size with great conditions. Hawaii's North Shore was solid swell from a storm that passed over the dateline earlier in the week with waves 10+ ft on the face. The South Shore was flat. The East Shore report was not available.

For Central California more northwest mid-period swell from the Gulf of Alaska is expected through Friday with size in the 2-3 ft overhead range. Southern CA to see a fraction of that same Gulf swell into early Saturday. The North Shore of Hawaii is getting real swell originating from a gale that passed over the dateline Sunday/Monday with 40 kt winds and 32 ft seas. Size to slowly trickle off through the weekend. The South Shore of Hawaii is flat with no change forecast. The East Shore to continue seeing easterly windswell in the 4.0-4.5 ft on the face for Thursday through Saturday then dropping off. Longterm no clear indications of a significant swell event is in sight. There's hints of a gale building in the Gulf of Alaska (east of the Hawaiian swell window) mid next week, but that's purely a guess by the models. Looking kinda slow after swell already in the water fades out. Make the most of what you can get now.

 

 

SHORT- TERM FORECAST
Current marine weather and wave analysis plus forecast conditions for the next 72 hours

North Pacific

Overview
On Thursday (11/13) the North Pacific jetstream continued to have a fair amount of energy dropping southeast from the dateline forming a trough that was bottoming out 900 nmiles northwest of Hawaii, then lifting sharply northeast forming a ridge off the US West Coast supporting high pressure there and pushing over Central Canada. 160 kts winds were on either flank of the trough offering some support for gale development there. Over the next 72 hours that trough is to quickly loose energy (by Friday afternoon) loosing all it;s potential and only 90 kt winds to be left by Saturday flowing into the trough, and even it is to be loosing it's definition. By Sunday this week flow is to be starting to pull apart off the Kuril Islands, likely splitting. Beyond 72 hrs a big ridge is forecast developing over the West Pacific, with the north part of the split flow quickly blasting north of even the Bering Sea and the southern branch getting all the energy and ridging hard north with 190 kts winds projected pushing up to the intersection of the dateline and the Aleutians. But interestingly, it's to be falling hard south into a very steep trough just west of Hawaii by Thursday (11/20), rising some then forming another modest trough in the eastern Gulf with 150 kt winds pushing into and over Cape Mendocino CA. Maybe all hope is not lost, at least for the Eastern Pacific. Limited support for gale development near the Hawaiian trough and more-so for the trough off the Pacific Northwest.

At the surface today a high pressure regime was getting control of the entire North Pacific. One high was centered 600 nmiles west of Pt Conception at 1028 mbs ridging northeast into the Pacific Northwest setting up a building pressure gradient along the entire Central Ca coast generating north winds at 20 kts there. Weak low pressure was west of it and a bit north of Hawaii, generating no real fetch of interest. Another high was building just west of the dateline at 1028 mbs pushing a modest fetch of 20 kt north winds 900 nmiles northwest of Hawaiian Islands towards them, likely generating some 9 sec period windswell. These two high were effectively filling the North Pacific and locking down any chance for gale development. Over the next 72 hours a small short-lived gale is to wrap up off the northern Canadian coast Friday (11/14) generating 45 kt west winds targeting the Central Canadian coast, but totally outside the US swell window and moving inland within 12 hours of forming, offering no potential. A weak gale is try and build at the intersection of the Aleutians and the dateline Sunday (11/16) tracking east, but half of it is to be over the Aleutians and obscuring any fetch. A second 12-18 hr gale is forecast building off Vancouver Island on Monday (11/17) pushing 40 kt winds and 23 ft seas towards Oregon and Washington, but nothing further south. It is to inland late Monday. In all a quiet pattern is forecast.

 

Another Weak Gulf Gale
Secondary fetch off the leading edge of the Dateline Gale (below) was pushing into the CA swell window Monday PM (11/10) at near 40 kts racing east and nearly gone by Tuesday evening but not before generating 21 ft seas at 40N 160W (Tues AM) and near 21 ft seas in the evening at 43N 143W 1000 nmiles from North CA. Possible swell for NCal starting Thursday 5 PM at 6.1 ft @ 13 secs (8.5 ft faces) holding into Friday AM.

 

Dateline Gale
A gale pushed off Japan moving just west of the dateline by Monday AM (11/10) generating 35-40 kts fetch all the while. By Monday AM (11/10) a broad area of 35 kt northwest winds were in-place at 39N 170E generating 32 ft seas at 39N 172E aimed right at Hawaii down the 310 degree great circle path. This fetch held at 35-40 kts in the evening at 39N 178E with 29 ft seas modeled at 38N 178E, 1700 nmiles from HI and 2800 from NCal (292 degrees). Fetch was fading Tuesday AM (11/11) from 30-35 kts with 25 ft seas at 37N 175W aimed at Hawaii down the 315 degree path. Fetch was gone after that with 20 ft seas Tues PM at 39N 165W targeting the US west coast better. Swell hit Hawaii as forecast first light Thursday AM (11/13) at 7.9 ft @ 15 secs (14 ft faces). Energy to be seeping into NCal by Saturday AM (11/15) at 5.2 ft @ 15 secs (7-8 ft faces) from 292 degrees.

 

North Pacific Animations: Jetstream - Surface Pressure/Wind - Sea Height - Surf Height

 

California Nearshore Forecast
On Thursday (11/13) high pressure at 1028 mbs remained centered 60 nmiles west of Pt Conception o ridging northeast into the Pacific northwest generating a pressure gradient and north winds from San Francisco south into Pt Conception. Chop was building. This gradient to lift north with the vector turning more towards and northeasterly flow at the surface by mid-Friday offering the possibly of a glass off from Bodega bay southward. And by Saturday the gradient to be gone with light offshores expected through the weekend, over the entire state and slowly moderating through Tuesday of next week (11/18). A weak secondary high is to try and set up later Tuesday bringing north winds to Cape Mendo, but it's to be gone by Wednesday AM while low pressure sets up off the Pacific Northwest and strong high pressure builds north of Hawaii pushing hard into Southern CA, likely setting up a northwest winds event later in the week. Enjoy the calm wind while you can.

Tropics
No tropical activity of interest was occurring.

 

South Pacific

Overview
At the oceans surface no swell producing fetch was occurring aimed at US targets. Over the next 72 hours no change is forecast.

 

South Pacific Animations: Jetstream - Surface Pressure/Wind - Sea Height - Surf Height

 

QuikCAST's

 

LONG-TERM FORECAST
Marine weather and forecast conditions 3-10 days into the future

North Pacific

Beyond 72 hours the gale at the intersection of the dateline and the Aleutians to track east and then drop south into the Gulf of Alaska on late Monday (11/17) into Tuesday with 35-40 kts northwest winds and seas at 23-24 ft aimed at the Pacific northwest down into Central CA. This low to fade Wednesday with winds 30 kts moving towards Oregon and impacting the coast there on Thursday (11/20) with 20 ft seas forecast pushing towards Cape Mendocino. Will believe it when it happens.

Also some form of cutoff low is forecast forming just northwest of the Hawaiian Islands on Wednesday lifting northeast with up to 35 kt winds aimed south. Possible larger windswell moving towards Hawaii if this occurs, a pure leap of faith at this early date.


MJO/ENSO Update (reference): As of Thursday (11/13) the Madden Julian Oscillation (MJO) was moving into the Active Phase. The Daily SOI index was way up to 27.55, erasing any previous gains into negative territory. The 30 day average was holding at 13.98 and the 90 day average was up a tick to 14.05, the highest in the past 30 days. This remains symptomatic of a weak La Nina. Winds anomalies at the surface and the 850 mb level (approx 1000 ft up) indicated east winds over the Eastern equatorial Pacific looking more like the Inactive Phase. The leading edge of the Active Phase of the MJO was trying to push east over the Philippines but making zero headway. This active phase is expected to continue into the third week in November (11/20), but dissipating all the while and completely gone by December 1. The Active Phase is to slightly enhance storm development in the Northern Pacific over the coming week or so, but not much of that is expected given this weak strength projection for the Active Phase (above).

South Pacific

No swell producing fetch forecast for the next 7 days.

Details to follow...

****

External Reference Material: El Nino Southern Oscillation (ENSO), Madden Julian Oscillation (MJO), Pacific Decadal Oscillation (PDO), Southern Oscillation Index (SOI), Kelvin Wave

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MAVERICKSSURF MAVFILM MAVSURFER SURFPULSE Inside Mavericks Randy Cone Surfboards

Local Interest

Friday Night - Surfing on TV: Rumor has it that some semi-serious surfing will be the subject of the long running network drama 'Numbers' this Friday night (11/14). Several of the Mav's crew including videographers, writers, forecasters contributed to this episode. Runs at 10 PM. See local listing for details.

Help Out a Fellow Mavericks Surfer: Our friend Christy Davis is going through some tough times. His 14 year old daughter was recently diagnosed with leukemia and she is currently undergoing chemotherapy. The prognosis is good but we'd all like to help him out with medical expenses not covered by insurance and a new Mav's gun. Randy Cone has offered to provide the board, we just need to get the funds together. If you would like to donate, send an email to us here or talk to Randy directly.

Pictures from Swell #1 - The first real significant class swell of the season produced a bit of action at Mavericks. See pictures here http://www.mavsurfer.com

Big Surf Up North - the First swell of the Fall 2008/2009 season brought a few large raw waves to the North CA Coast. Check out the details here: http://www.towsurfer.com/default.asp

The Kelly Slater Project - A group of dedicated surfers from Cocoa Beach are working to construct a statue of the the home town legend and set it up for all to enjoy near the break where Kelly grew up surfing. Take a look at the statue and read all about it here: http://www.thekellyslaterproject.com/

STORMSURF Local Wave Models Upgraded - We significantly upgraded the local waves models on Sunday (6/8). All now utilize our newly developed high-resolution 3D shaded relief topography for mapping landmasses. Coastlines are now accurate down to the individual pixel providing near photographic realism. Mountains and hills are all shaded and accurate to within the same single pixel specification. Cities are overlaid as before, but now we've added major highways and rivers too (for many locations). Some good examples of this new technology can be viewed here:
- View the reefs north of Tahiti and notice their contribution to the 'Swell Shadow' relative to California - Tahiti
- Notice the detail of the coast in and around Vancouver Islands and Washington State - Pacific Northwest
- See the details of inland waterways of the US Northeast Coast - Virginia
- Details of the Mentawai Island and Nias

And all the local models can be found either on our homepage or from the wavemodel page (bottom half of the page).

Time Zone Converter By popular demand we've built and easy to use time convert that transposes GMT time to whatever time zone you are located. It's ion left hand column on every page on the site near the link to the swell calculator.

Mavericks Contest 2008: View all the action from the 2008 Maverick Surf Contest from Powelines Productions here: http://www.youtube.com/watch?v=9o5lj9CUpCc

Need Chiropractic Help? Visit our friends at Darrow Chiropractic. Not only will Dr. Darrow fix you up, he might give you some big wave surfing tips too! See more here: http://www.darrowchiropractic.com/

Stormsurf Google Gadget - Want Stormsurf content on your Google Homepage? It's simple and free. If you have Google set as your default Internet Explorer Homepage, just click the link below and a buoy forecast will be added to your Google homepage. Defaults to Half Moon Bay CA. If you want to select a different location, just click on the word 'edit', and a list of alternate available locations appears. Pick the one of your choice. Content updates 4 times daily. A great way to see what waves are coming your way!
http://www.google.com/ig/add?moduleurl=http://www.stormsurf.com/gadget/stormsurf .xml

Free Stormsurf Stickers - Get your free stickers! - More details Here

Read all the latest news and happenings on our News Page here

Surf Height-Swell Height Correlation Table

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