Southern Hemi Swell

Discussion in 'Mid Atlantic' started by parippa, Aug 13, 2012.

  1. parippa

    parippa Well-Known Member

    58
    Mar 20, 2012
    I recently read an article about the elusive southern hemi swells that reach the mid atlantic.. dont remember if it was here or MSW. Theres currently a large area of strong north fetch pretty close to western south africa. Sure, i can wait a few days and see what the wave models have in store for us, but in the meantime, anyone think a bit of refraction is possible around those outer carribbean islands that could pull this 18 second swell into the pristine and breathtaking shorelines of New Jersey?
     
  2. apbb

    apbb Well-Known Member

    97
    Jun 2, 2012
    18 second?

    *dies*
     

  3. gallerysurfboards

    gallerysurfboards Well-Known Member

    79
    Aug 12, 2011
    It's not so much the island blockage that we suffer from, but the continental shelf. Longer period swells need deeper water to survive traveling that far. This is probably the biggest reason we are less consistent than the west coast. The west coast shelf is much shorter. However, occasionally southern hemi swells have just enough energy to push through and usually show up as a small pulse on our beaches. I've never seen one greater than waist high.
     
  4. SkegLegs

    SkegLegs Well-Known Member

    513
    Feb 8, 2009
    I'd say usually once a year we see them. On it's own it's noticable, but hardly worth surfing, but if you're lucky and it combos in with a typical shot of south wind swell, it can make it quite a bit better than your average summer crap.

    Off the top of my head I remember last 4th of july being a really fun day of south windswell mixed with southern hemi long period.

    *edit*
    Wow, just looked at the models and that is a very rare one, It looks like the rotation is going to be far enough north so that actual fetch will be pointed towards us,not just swell refracting , it is pretty much clear of brazil. It's rare that they go that far north. We will definitely see something from that, your guess is as good as mine if it's going to be surfable.
     
    Last edited: Aug 13, 2012
  5. Ryan7

    Ryan7 Well-Known Member

    300
    Jun 1, 2011

    https://www.fnmoc.navy.mil/wxmap_cg...ww3_s_atl&prod=swlwvht&dtg=2012081312&set=All
     
  6. beach bum

    beach bum Member

    10
    Aug 30, 2010
  7. takklz

    takklz Member

    22
    May 19, 2010
  8. ewwoodsurf

    ewwoodsurf Well-Known Member

    65
    Oct 23, 2007
    I was not able to open this page. I read the article in obxsurfinfo, and that was very interesting. I'm going down there next week. Would love to see some of that long period southern hemi swell!
     
  9. ND081

    ND081 Well-Known Member

    900
    Aug 7, 2010
    how long would it take for that to reach us?
     
  10. Swellinfo

    Swellinfo Administrator

    May 19, 2006
    Ya, we do get these occasionally, but the set up off Northern Africa, doesn't look like its going to send anything to the East Coast... It looks like Canada could see these swell, but there's not enough East in it to reach the Mid Atlantic or Northeast from what I see.

    Go to Swellinfo wave period maps, and zoom out to the North Atlantic, and you will be able to see the long period swells coming from the Southern Hemi.
     
  11. Swellinfo

    Swellinfo Administrator

    May 19, 2006
    Looking at it a bit further, there is a small to moderate sized storm sitting off of Brazil that is sending fetch in our direction, but It doesn't look like a big enough fetch to provide us anything of significance.
     
  12. Mitchell

    Mitchell Well-Known Member

    Jan 5, 2009
    Looks like most of its energy is focused on the eastern north atlantic[​IMG]
     
    Last edited: Aug 13, 2012
  13. still stoked

    still stoked Well-Known Member

    162
    Aug 10, 2011
    Completely agreed. As noted this doesn't happen very often, but if 2 ft of this southern stuff escapes the S Atlantic and heads our way and it arrives when there is 2 ft of local chop, you could have chest high sets.
     
  14. Ryan7

    Ryan7 Well-Known Member

    300
    Jun 1, 2011

    Impressive South Atlantic Satellite Loop with this storm throwing energy northward:


    http://www.eldoradocountyweather.com/current/satellite/eastern-atlantic-ocean-ir-satellite-loop.html

    looks like the center is heading towards Cape Town, but the outer rim extends outward almost across the whole south Atlantic. Northeast and Atlantic Canada will likely get some of this energy mid week next week.
     
  15. Bronze Whaler

    Bronze Whaler Well-Known Member

    269
    Aug 22, 2009
    We got swell in the carolinas from a similiar system right before bert I think it was that rendered some of the longest waves I've ever ridden at a certain SC spot w/ amazing but rarely realized potential
     
  16. Ryan7

    Ryan7 Well-Known Member

    300
    Jun 1, 2011
    [​IMG]

    Greenland? Anyone? Bueller? Bueller?
     
    Last edited: Aug 16, 2012
  17. Mitchell

    Mitchell Well-Known Member

    Jan 5, 2009
    Ha ha that looks so amazing...all that 17-18-19 second energy headed north....with Greenland and Iceland are in these little pockets of energy.

    Kind of snaps you back to reality when you look at the actual swell heights...

    less than a foot to around one foot @ 18 seconds is probably not worthy of a road trip...and probably wont really translate to anything but who knows....

    The NOAA WW3 output for next thursday the 23rd for the offshore Cape Cod / Long Island area when it peaks out at a whopping: 0.27 @ 17.5. and thats in meters and seconds!

    But its still a cool curiousity and maybe the models just arent that good at predicting the size of these things and it will actually be more than what they are predicting.
     
    Last edited: Aug 16, 2012
  18. parippa

    parippa Well-Known Member

    58
    Mar 20, 2012
    Thanks for finding that article on THE PREMIER obx report. The guys that run that site are pretty cool. So its the bathymetry that is going to screw us.. I didnt realize 20sec swell can hit bottom in 600 ft of water.
    perhaps a giant floating portable beach to tow out to the shelf may be in order. maybe if we all pitch in like ten bucks..
     
  19. havanasand

    havanasand Well-Known Member

    231
    Aug 9, 2011

    hmm...I've heard much worse ideas.
     
  20. parippa

    parippa Well-Known Member

    58
    Mar 20, 2012
    I just counted 18 sec between two of the biggest waves I've seen in a while.. this sucka has arrived.