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Pacific Storm and Surf Forecast
Updated: Tuesday, November 6, 2018 3:35 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
2.0 - California & 1.0 - 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 11/5 thru Sun 11/11

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   

Windswell Prevails
Possible Gulf Gale Forecast

BUOY ROUNDUP
On Tuesday, November 6, 2018 :

  • Buoy 233 (Pearl Harbor Entrance)/Buoy 239 (Lanai): Seas were 2.9 ft @ 6.9 secs with swell 2.3 ft @ 6.5 secs from 157 degrees.
  • Buoy 106 (Waimea): Seas were 5.0 ft @ 11.8 secs with swell 2.4 ft @ 11.7 secs from 307 degrees.
  • Buoy 46025 (Catalina RDG): Seas were 3.0 ft @ 12.0 secs with swell 1.6 ft @ 12.9 secs from 188 degrees. Wind at the buoy was northeast at 10-14 kts. Water temperature 68.2 degs. At Ventura (Buoy 111) swell was 2.1 ft @ 9.3 secs from 261 degrees. At Santa Monica (028) swell was 1.4 ft @ 12.8 secs from 226 degrees. At Camp Pendleton (043) swell was 1.4 ft @ 14.6 secs from 214 degrees. Southward at Pt Loma (191) swell was 1.7 ft @ 13.3 secs from 193 degrees.
  • Buoy 46012 (Half Moon Bay)/029 (Pt Reyes): Seas were 10.3 ft @ 9.1 secs with swell 7.5 ft @ 8.8 secs from 312 degrees. Wind at the buoy (013) was northwest at 6-10 kts. Water temp 55.8 degs (042).

See Hi-Res Buoy Dashboards (bottom of the page)

Swell Classification Guidelines

Significant: Winter - Swell 8 ft @ 14 secs or greater (11+ ft faces) for 8+ hours (greater than double overhead).
Summer
- Head high or better.
Advanced: Winter - Swell and period combination capable of generating faces 1.5 times overhead to double overhead (7-10 ft)
Summer - Chest to head high.
Intermediate/Utility Class: Winter - Swell and period combination generating faces at head high to 1.5 times overhead (4-7 ft).
Summer
- Waist to chest high.
Impulse/Windswell: Winter - Swell and period combination generating faces up to head high (1-4 ft) or anything with a period less than 11 secs.
Summer
- up to waist high swell. Also called 'Background' swell.

Surf Heights for Hawaii should be consider 'Hawaiian Scale' if period exceeds 14 secs.

PACIFIC OVERVIEW
Current Conditions
On Tuesday (11/6) in North and Central CA locally generated northwest windswell was producing waves at chest to shoulder high on the sets and warbled and soft with northwest lump in the water. It looks like summer. Protected breaks were waist to chest high and mushed with a little warble intermixed but with clean surface conditions. At Santa Cruz surf was waist high or so on the sets and a bit warbled and mushed and unremarkable. In Southern California/Ventura surf was waist high and clean and semi-lined up but weak. In North Orange Co waves were waist high and breaking on the beach from tide and a bit textured from light south wind. South Orange Country's best breaks were chest high on the sets and soft and textured from light south wind. In North San Diego surf was waist high and clean and mushy. Hawaii's North Shore was getting minimal windswell with waves maybe chest high on the sets a top break and pretty warbled from northeast wind. The South Shore was flat to thigh high and clean. The East Shore was getting east windswell with waves thigh high and heavily textured from modest east-northeast trades.

See QuikCASTs for the 5 day surf overview or read below for the detailed view.

Meteorological Overview
On Tuesday (11/6) no real swell of interest was hitting California or Hawaii. But modest locally generated northwest windswell was hitting California at exposed breaks and north windswell was hitting exposed north facing shores in Hawaii. In all surf was unremarkable in the Pacific especially given the time of year. A weak gale developed while moving through the Western Gulf of Alaska on Fri (11/2) with seas building to 25 ft Sat (11/3) and then faded while pushing into the Northeastern Gulf on Sun (11/4). That swell is hitting exposed breaks in North CA now but is buried in local windswell. After that a gale is forecast developing in the Northwestern Gulf of Alaska falling southeast on Mon-Tues (11/13) with seas building to 30 ft. But odds are very low of this outcome. Otherwise virtually no swell producing fetch is forecast for the next 7 days. This poor pattern is being driven by a neutral ENSO pattern and the Inactive Phase of the MJO.

See all the details below...

 

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

North Pacific

Overview
Jetstream
On Tuesday AM (11/6) the jetstream was incoherent, weak and ill formed pushing east off the area from Japan to the North Kurils tracking over the dateline and then to the Gulf getting somewhat more consolidated while ridging northeast up into the Northeastern Gulf and then pushing into North Canada with no troughs indicated and offering no support for gale development. Over the next 72 hours no change is forecast with the jet fragmented, weak and ill formed. Beyond 72 hours starting Sat (11/10) the jet is to get somewhat better organized but still well split with the northern branch running generally east on the 50N latitude line and the southern branch down on the 27N latitude line with winds supposedly building to 120 kts over the dateline starting to fall southeast towards the Gulf but with no troughs indicated yet. a very weak jetstream flow is to be in control with no well defined flow indicated and that pattern is to hold through Sat (11/10). No support for gale development is indicated. But by Sun (10/11) that pocket of wind energy is to build to 130 kts falling hard southeast and carving out a steep trough over the Northwestern Gulf of Alaska offering some support for gale development. The trough is to push east into Tues (11/13) over the Northeastern Gulf while weakening with winds down to 100 kts with support for gale development fading. Back to the west a more consolidated jet flow is forecast pushing off Japan lifting gently east-northeast but still split and weak offering no support for gale development, but far better organized than the week earlier. In short, the Inactive Phase of the MJO is to suppressing wind energy injection into the jetstream and making for an environment not supportive of gale development, but the Inactive Phase is to be weakening.

Surface Analysis
On Tuesday AM (11/6) some swell was arriving in Hawaii and California from a gale previously in the Gulf (see Gulf Gale below).

Over the next 72 hours no swell producing weather systems are forecast.

 

Gulf Gale
A weak and ill formed gale/low pressure system developed in the Northwestern Gulf of Alaska on Thurs PM (11/1) generating west winds at 30-35 kts over a fragmented area with seas starting to build. On Fri AM (11/2) winds built to 35 kts from the west-southwest just south of the Eastern Aleutians with seas building to 23 ft at 50N 165W aimed east. In the evening fetch built some more at 40 kts while holding position with seas 25 ft over a building area at 50N 164W aimed northeast. On Sat AM (11/3) 35 kt west winds were holding in the same area with seas holding at 25 ft at 51N 162W aimed east-northeast. In the evening the gale is to push east with winds fading from 35 kts and seas 25 ft at 52N 155W aimed east (316 degrees NCal). The gale is to continue tracking east while slowly fading from there and outside of the swell window for anywhere but the Pacific Northwest and points north of there. There are some odds of sideband swell possible for Hawaii and a bit more for the US West Coast.

Hawaii: Residuals fading Tues (11/6) from 2.5 ft @ 11-12 secs early (2.5 ft). Swell Direction: 315 degrees

North CA: Swell arrival on Tues (11/6) building mid-day to 4.9 ft @ 14-15 secs (7.0 ft) and shadowed in the SF Bay Area. Swell fading Wed AM (11/7) from 4.7 ft @ 12 secs (5.5 ft) and buried in local windswell. Swell Direction: 306-315 degrees

 

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

 

Tropical Update
No tropical weather systems of interest are forecast.

California Nearshore Forecast
On Tuesday (11/6) high pressure at 1026 mbs was centered 500 nmiles west of Southern Oregon ridging east generating a pressure gradient and producing north winds at 25-30 kts between Cape Mendocino and Pt Arena but with light winds south of there nearshore down to Pt Conception. Windswell was being generated. Wednesday (11/7) the gradient is to hold while lifting north some with north winds 25 kts over North CA and 10-15 kts for Central CA with more windswell being produced. Thurs (11/8) north winds to be 25+ kts over all of North California but 10-15 kts south of there with windswell production continuing. Friday (11/9) high pressure is to hold at 1030 mbs off Oregon with north winds 20-25 kts off Cape Mendocino with light winds from Pt Arena southward. Windswell still being produced but less than days past. More of the same on Sat (11/10). Then on Sun (11/11) low pressure is to be building in the Gulf with a front 900 nmiles off Central CA and a weak wind pattern over and off the entire US West Coast. No windswell production is expected. The front is to lift northeast and push into the Pacific Northwest with a weak wind pattern holding over California and offering no windswell production potential. A weak pressure and wind pattern is to hold on Tues (11/13).

 

South Pacific

Overview
Surface Analysis  
On Tuesday (11/6) no swell of interest was in the water.

Over the next 72 hours no swell producing weather systems of interest are 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 a small gale is to develop over the Eastern Aleutians Sun AM (11/11) producing northwest winds at 30 kts starting to get some traction on the oceans surface there. In the evening northwest winds to build to 40 kts pushing southeast with seas building to 22 ft at 50N 168W. On Mon AM (11/12) 40 kt west winds are to be over the Central Gulf with seas building to near 30 ft at 49N 160W aimed southeast at mainly the US West Coast. In the evening fetch is to be fading at 30-35 kts but broad in coverage with seas to 28 ft at 47N 152W aimed east. The gale to fade from there. If it actually forms, maybe some swell to result. Something to monitor but odds are low of this actually happening.

 

South Pacific

Beyond 72 hours no swell producing weather systems of interest are forecast.

 

MJO/ENSO Forecast

 

ENSO Neutral Conditions Prevail - MJO Continues Inactive

The Madden Julian Oscillation is a periodic weather cycle that tracks east along the equator circumnavigating the globe. It is characterized in it's Inactive Phase by enhanced trade winds and dry weather over the part of the equator it is in control of, and in it's Active Phase by slackening if not an outright reversing trade winds while enhancing precipitation. The oscillation occurs in roughly 20-30 day cycles (Inactive for 20-30 days, then Active for 20-30 days) over any single location on the planet, though most noticeable in the Pacific. During the Active Phase in the Pacific the MJO tends to support the formation of stronger and longer lasting gales resulting in enhanced potential for the formation of swell producing storms. Prolonged and consecutive Active MJO Phases in the Pacific help support the formation of El Nino. During the Inactive Phase the jet stream tends to split resulting in high pressure and less potential for swell producing storm development. Wind anomalies in the Kelvin Wave Generation Area (KWGA) are key for understanding what Phase the MJO is in over the Pacific. The KWGA is located on the equator from 135E-170W and 5 degs north and south (or on the equator from New Guinea east to the dateline). West wind anomalies in the KWGA suggest the Active Phase of the MJO in the Pacific, and east anomalies suggests the Inactive Phase. In turn the Active Phase strengthens and the Inactive Phase weakens the jetstream, which in turn enhances or dampens storm production respectively in the Pacific.The paragraphs below analyze the state of the MJO in the Pacific and provide forecasts for MJO activity (which directly relate to the potential for swell production).

Overview: La Nina started developing in early 2016, but westward displaced and generally weak. And by March 2017, it was gone with suspicious warming developing along South America and over the Galapagos to a point south of Hawaii. By May the atmosphere returned to a neutral configuration but then in July east anomalies started building in the KWGA and have not stopped, with cold water upwelling over the the Nino1.2 and 3.4 areas, indicative of La Nina. A double dip La Nina was in control and continued through the Winter of 2017-2018. But warming started building along the South and Central American coast in early March 2018 associated with two upwelling Kelvin Waves, and continued trying to build over equatorial waters over the Summer and beyond, but could not sustain itself, suggesting the demise of La Nina but not yet turning towards El Nino.

LONG-RANGE PACIFIC STORM AND SWELL GENERATION POTENTIAL FORECAST
Fall/Winter 2018 = 6.5 (California & Hawaii)
Rating based on a 1-10 scale: 1 being the lowest (small and infrequent surf conditions), 5 being normal/average, and 10 being extraordinary (frequent events of large, long period swells)

Rationale: Assuming the PDO has moved to the warm phase and that El Nino develops as forecast, and assuming and an ocean-atmospheric coupling becomes established in the Sept timeframe and ocean temperature anomalies in Nino3.4 build to the +1.0 deg range, there is good probability for enhanced storm production in the North Pacific starting in the late Nov timeframe (specifically the Gulf of Alaska and Dateline regions) with an increased intensity in number of storm days and storm intensity, resulting in increased odds for larger than normal swell, with increased duration and higher than normal period.

KWGA/Equatorial Surface Wind Analysis & Short-term Forecast:
Analysis (TAO Buoys): As of Mon (11/5) 5 day average winds were solid from the east over the Eastern equatorial Pacific fading while pushing towards the dateline, then light east over the KWGA. Anomalies were neutral over the East and Central equatorial Pacific, then turning light easterly over the dateline and into the KWGA.
1 Week Forecast (GFS Model): On (11/6) moderate east anomalies were fading over the Western KWGA with neutral anomalies over the Eastern KWGA. The forecast has East anomalies fading and all but gone in the Western KWGA by 11/9 with western anomalies building to modest strength in the Eastern half of the KWGA on 11/8 and holding through the end of the model run on 11/13 but with east anomalies possibly building then on the dateline. This easterly wind event was previously not on any of the longer range models and suggests that El Nino is not developing as solidly as once predicted.

Kelvin Wave Generation Area wind monitoring model: West and East

Longer Range MJO/WWB Projections:  
OLR Models: (11/5) A moderate Inactive Phase of the MJO was over the West Pacific/KWGA. The Inactive Phase is to push east and slowly fade nearly east of the KWGA at day 8, then gone at the end of the model run at day 15 with the Active Phase of the MJO moving into the West Pacific. The statistical model depicts a variation on the same theme but with the Active Phase dissipating before reaching the West Pacific at the end of the model run. The 2 models are mostly in sync.
Phase Diagrams 2 week forecast (ECMF and GEFS): (11/6) The ECMF model depicts the Active Phase of the MJO was moderately strong over the West Indian Ocean and is to quickly fade to weak status 1 day out and track steadily east moving over the Maritime Continent reaching the West Pacific 2 weeks out. The GEFS model depicts a variation on the same thing. The 2 models are generally in sync.
40 day Upper Level Model: (11/6) This model depicts a moderate plus strength Inactive/Dry signal over the East Pacific and is to be pushing east into the Eastern equatorial Pacific and into Central America on 11/13. A very weak Active Phase is to push over the West Pacific 11/21 fading while pushing to the East Pacific and Central America on 12/6. After that a weak Inactive Phase is to again set up over the West Pacific on 12/6 and track to the Central PAcific at the end of the model run on 12/16.
4 Week CFS Model (850 mb wind): (11/5) This model depicts east anomalies were centered over the core of the KWGA and filling it. East anomalies are to retrograde west and out of the KWGA on 11/8 while moderate west anomalies rebuild in the core of the KWGA by 11/7 holding in strength through 11/25. Perhaps east anomalies to move into the far Western KWGA on 11/17, but make no further eastward progress. West anomalies are to hold in the KWGA through the end of the model run on 12/3. This run suggests some sort of weak El Nino is developing, but not as strong as previous runs.
3 Month CFS Model (850 mb wind): (11/6) This model depicts weak east anomalies were barely over the KWGA today with no clearly defined MJO signal present. East anomalies are to be gone by 11/6. After that weak west anomalies are to build modestly in the heart of the KWGA with no discernible MJO Phase present. West anomalies are to holding for the foreseeable future through 2/3/19. The MJO is to remain weak throughout. The low pass filter indicates a low pressure bias is fully in control of the KWGA reaching east over California to 115W and forecast holding beyond. A 4th contour line previously forecast to to develop in the 12/22-1/21/19 period is no longer depicted and we doubt it will return. We're beginning to think this whole El Nino setup is a bit overblown on this model and that it will not develop, or develop only weakly. The atmosphere and ocean are theoretically slowly becoming coupled towards an El Nino bias in the Pacific Ocean, but there's no objective evidence of it. If it hasn't happened yet (by Nov 1), it's doubtful there will be significant weather influence even if it does develop. Still this pattern is slowly becoming more favorable to support storm production in the Pacific regardless of whether El Nino develops, especially compared to the 2 previous years given that we're still moving towards Winter and La Nina is gone. Our assumption is a normal Winter pattern will result, but nothing more.

CFSv2 3 month forecast for 850 mb winds, MJO, Rossby etc - Alternate link

Subsurface Waters Temps
TAO Array: (11/6) Today in the far West Pacific water temps are 30 degs solid steady today at 177E, having retrograded previously from 180W. The 28 deg isotherm line had retrograded west to 160W but today was moving east at 156W. The 24 deg isotherm was 125 meters deep at 140W then setting progressively shallower east of there but now pushing into Ecuador. It seems that Kelvin Wave #2 had already peaked in the West Pacific, and temps were retrograding, but today 11/6 the are surging east again. Anomaly wise warm anomalies are filling the entire subsurface Pacific with Kelvin Wave (#2) extending from 175E at +3 degs building to +4.0 degs centered at 110W down 90 meters then pushing into the coast of Ecuador. This is likely the peak of the Kelvin Wave cycle for this El Nino. The hi-res GODAS animation posted 10/30 paints the same picture with the Second Kelvin Wave starting in the West Pacific near 155E pushing down under the dateline with building temps peaking at +4.0 degs at 120W and then pushing into Ecuador. A small pocket of neutral anomalies that was in the far West Pacific just east of the Maritime Continent appears to be getting warmer with warm anomalies now positioned at 135-140E and 100 meters down. Kelvin Wave #2 was breaching the surface from 100W to 145W solidly with secondary solid warm anomalies starting to fill the entire region on the equator from 105W-165E. The GODAS animation appears to be 1 week behind the TAO data but also is more detailed and accurately modeled.
Sea Level Anomalies: (10/30) Positive anomalies were solid from north of New Guinea over the Dateline and into Ecuador and broad in coverage peaking at +10 cms from 105W-125W. This indicates that Kelvin Wave (#2) was peaking south of California and pushing quickly east. It was branching north to Baja and south to Southern Peru, a good sign.

Surface Water Temps: The more warm water in the equatorial East Pacific means more storm production in the North Pacific during winter months (roughly speaking). Cold water in that area has a dampening effect. Regardless of what the atmospheric models and surface winds suggest, actual water temperatures are a ground-truth indicator of what is occurring in the ocean. All data is from blended infrared and microwave sensors.
Satellite Imagery
Hi-res Nino1.2 & 3.4: (11/5) The latest images (1.2 3.4) indicate temps were warm in a classic Kelvin Wave pattern straddling 5 degrees north and south of the equator from Ecuador west to the dateline, with imbedded pockets of slightly stronger warming. These temps were a little warmer than days past but still limited in coverage. There was minimal slight warming along the coast of Chile up into Peru, but less so than days past and with cool waters further off the coast there. Generic warm anomalies were north of the equator from Central America and south of Mexico building out to Hawaii and the dateline. This pattern looks somewhat like El Nino, but also like La Nina with no solid warming branching north and south along the Central and South American coast, and most warming still in the West Pacific, suggesting this developing El Nino is only weakly in control at best and very fragile over the East equatorial Pacific.
Hi-res 7 day Trend (11/5): A weak warming trend was set up from Ecuador to the dateline on the equator with pockets of stronger warming imbedded west of the Galapagos. No cooling was indicated. Building warming was along the coast of Peru and Chile.
Hi-res Overview: (11/5) A pocket of weak cool water was present just off the outer coast of Chile but loosing coverage with warm water holding along the immediate coast of Peru. Otherwise moderate warm water was on the equator from Ecuador over the Galapagos building out to the dateline with a few pockets of stronger imbedded warming. There were no pockets of imbedded cool anomalies. It seems we've turned the corner to a warm regime and are no longer in a mixed pattern where La Nina cool anomalies are present intermixed with warm anomalies. But it is not at all apparent that we are in a legitimate El Nino pattern.
Nino1.2 Daily CDAS Index Temps: (11/6) Today's temps were falling fast at +0.033 degs after peaking recently at +0.507 on 11/4, after falling to -0.628 on 10/22, down from the all time high for this event on 9/25 +1.316. Two previous peaks occurred of +0.510 degs on 9/17 and +0.459 on 5/13. Otherwise temps have been steady in the -0.50 deg range.
Nino 3.4 Daily CDAS Index Temps: (11/6) Today temps were falling from +1.351 after dramatically rising from +0.471 on 10/30 to +1.450 on 11/5, beating the previous peak temps of +0.795 on 10/9, and +0.649 on 9/27, and that beating the previous peak at +0.490 on 7/2. Overall temps are noodling around at +0.5 degs above normal, but nothing more other than one reading today. 3 days is not a trend. But this adds some hope that perhaps El Nino is trying to develop, but nothing serious.

Click for Full Sized Image

CFSV2 Forecast for Nino3.4 SST Anomalies

SST Anomaly Projections
CFSv2 Uncorrected Data (11/6) The forecast calls for a slow but steady increase from here rising to +1.00 degs in mid-Nov then toggling from 0.9 to +1.10 degs from Dec into May 2019, then slowly fading through July 2019 down to +0.75 degs. This suggests that perhaps El Nino is to build through the Fall of 2018 but weaker than previous model runs. But given the weak El Nino forecast, this somewhat dampens the odds of La Nina following in Fall of 2019. Most other models are also suggesting a possible turn to weak El Nino conditions by late Fall.
IRI Consensus Plume: The mid-Oct Plume depicts temps are to slowly rise from here, to +0.90 degs in October and +0.9-+1.0 degs in Nov through March 2019, then slowly fading to 0.78 in June. See chart here - link. It looks like La Nina is fading out and there's a 76% chance of a weak El Nino developing.

Atmospheric Coupling (Indicating the presence of El Nino in the atmosphere driven by the ocean):
Southern Oscillation Index (SOI) (negative is good, positive bad) (11/6): The daily index was rising today at +0.06. The 30 day average was rising some at +3.93 suggesting an Inactive MJO was holding. The 90 day average was rising some at -3.48 and has been essentially steady for a month now. The 90 degree average turned negative for the first time in a year on 6/30 suggesting a neutral ENSO pattern was building in the atmosphere. This is expected for a month more before falling into steady negative territory by mid August.
ESPI Index (like SOI but based on satellite confirmed precipitation. Positive and/or rising is good, negative and/or falling is bad): (11/6) Today the index was falling at -0.34, down from -0.22 the week of 10/22, after having risen to +0.39 on 10/10, the highest so far this event. This suggests the Inactive Phase of the MJO was having a negative effect and that precip and evaporation are just slightly less than normal, and not above normal as one would expect if El Nino were in play. We are in an ENSO neutral pattern. The reading from 8/14 (+0.11) was the first time it's turned positive in a year. Recent points of interest in reverse chronological order are: -1.04 on 6/5, -0.70 on 5/20, -0.60 on 5/17, -0.36 on 5/11 and -0.38 on 5/10, -0.35 on 4/26, -1.02 on 4/5, -1.13 on 3/27. The trend suggests La Nina is all but gone. This index is a forerunner of what happens in the ocean by 2-3 months in developing El Nino and La Nina situations.
Pacific Decadal Oscillation: The PDO is weakly positive, even though La Nina is in play.
Per NOAAs index recent values: June 2017 +0.21, July -0.50, Aug -0.62, Sept -0.25, Oct -0.61, Nov -0.45, Dec -0.13, Jan 2018 +0.29, Feb -0.19, Mar -0.61, April -0.89, May -0.69, June -0.85, July -0.09, Aug -0.42, Sept -0.42. This continues to look like the warm phase of the PDO, even with La Nina, because the warm PDO appears to be dampening the effects of La Nina. No consistently solid negative readings have occurred since Feb 2014
The Washington/JISAO index (Jan-Dec): June 2017 +0.79, July +0.10, Aug +0.09, Sept +0.32, Oct +0.05, Nov +0.15, Dec +0.50, Jan +0.70. Feb +0.37, Mar -0.05, April +0.11, May +0.11, June -0.04, July +0.11, Aug +0.18, Sept +0.09. No real negative readings have occurred since Dec 2013
The PDO turned from a 16 year negative run (Jan 98-Feb 2014) in early 2014 and has been positive ever since (other than a few months of negative readings in Fall 2016, the result of a turn towards La Nina). Looking at the long term record, it is premature to conclude that we have in-fact turned from the negative phase (La Nina 'like') to the positive phase (El Nino 'like'), but the data strongly suggests that could be a possibility. By the time it is confirmed (4-5 years out), we will be well into it.

See imagery in the ENSO Powertool 

****

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


Powerlinessurf Jeff Clark Inside Mavericks

Local Interest

Stormsurf Video Surf Forecast for the week starting Sunday (11/4):
https://www.youtube.com/watch?v=qw73ZRIIulU&feature=youtu.be&hd=1
For automatic notification of forecast updates, subscribe to the Stormsurf001 YouTube channel - just click the 'Subscribe' button below the video.

Powerline Productions New Movie Preimer - Next Level - Friday (11/9) at 7 PM. Details here: http://www.stormsurf.com/page2/forecast/forecast/NextLevel.html

- - -

Stormsurf and Mavericks on HBO Sports with Bryant Gumbel https://www.youtube.com/watch?v=luQSYf5sKjQ

Mavericks Invitational Pieces Featuring Stormsurf:
http://www.bloomberg.com/video/how-to-predict-the-best-surfing-waves-EsNiR~0xR5yXGOlOq2MqfA.html
http://www.cbsnews.com/videos/surfs-up-for-mavericks-invitational-in-calif/

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.

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Surf Height-Swell Height Correlation Table

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