Surf temps at Cocoa Beach are in the low 70's which means we are experiencing a cold water upwelling. So I asked Randy Lascody, the local NOAA marine expert for some help in understanding this...
What causes the upwelling?
Many years during the summer (especially July) there is a period of upwelling that lowers temperatures over the near shore waters. This is a result of the persistent south/southeast wind flow caused by the nearly stationary Bermuda high pressure ridge. Water transport in the upper oceanic layers is 90 degrees to the right of the wind flow (known as Ekman Transport) , which is directly away from the coast when the winds are predominantly south/southeast. Therefore colder water from below must upwell.
Periodic meandering of the Gulf Stream also occurs and induces upwelling. This may be due in part to the atmospheric forcing (high pressure ridge position/strength).
How long does it usually last?
The upwelling usually subsides during August due to an overall diminishing of the winds (high pressure ridge sets up across the area).
Normally sea breeze intensity wanes by this time of year. Will the cooler inshore water temps give a boost to sea breeze wind strength because of the improved temperature gradient?
There may be some correlation to the cooler near shore waters and increased intensity of afternoon thunderstorms. This would mainly be due to a slight increase in the strength of the winds behind the sea breeze boundary, which produces stronger convergence with the west coast sea breeze boundary.
Would the cooler inshore waters dampen the wind strength of any potential hurricane as it moved inland?
The cooler waters would have no appreciable impact on a tropical cyclone. The reason for this is that a tropical cyclone covers hundreds of miles and the cooling near shore is on a much smaller scale.
Any online reference material for the cold water upwelling?
A notable cold water episode occurred in the summer of 2003. It is documented at:
Caught about 45 minutes of wind before the crazy stuff started. Thankfully, made it back before the off shore windshift. Fun while it lasted.
The iWindians have added the KSC Mesonet to their vast empire of wind data. Why is this noteworthy? Because we now have daily data records via their graph system for the regular 6 minute Tower updates. Wind readings from the Towers are 56 feet up and in knots.
Where did you go? I sailed BRR for a couple of minutes again on Sunday
but not much wind.
----- Original Message -----
From: Clyde <clydepeggy@...>
Date: Sunday, July 30, 2006 8:00 pm
Subject: [ecfw] Oh What a Relief It Was
To: ecfw@yahoogroups.com
> Just enough wind to keep me scooting around on a 6.4. No thunder, no
> lightning and no complaints. The sea breeze had legs and delivered a
> good couple of hours of some much needed water time. Made a couple of
> downwind 360's just to add to the nice Sunday afternoon.
>
Long chest high surf. Side shore breeze. 7.4 and Kona grabbed 100 or
so waves in very light wind. Rode most stem to stern. Sometimes for
up to a hundred yards or so, first backside then front on most. Great
day to be in the waves.
BTW, the water was refreshingly cool by comparison to yesterday's
Kelly Park sesh. No weeds either.
Just enough wind to keep me scooting around on a 6.4. No thunder, no lightning and no complaints. The sea breeze had legs and delivered a good couple of hours of some much needed water time. Made a couple of downwind 360's just to add to the nice Sunday afternoon.
Yes... occasionally there are a few days this time of year the
seabreeze will kick in. I was sitting behind my home last Friday
being teased by the swaying trees in the late afternoon.
I drove out to BRR on a hunch and as luck would have it, found there
was enough wind to at least get some baord time. Sailed around
Patrick AFB and all the way to the Pineda Cswy and back. My
claculations say 9 miles. 30% of the trip was on plane and the rest
close to it. Prodigy w/6.9M. I was sore when I woke up on Saturday
but satisfied. A couple ibuprophen fixed it.
--- In ecfw@yahoogroups.com, johni952004 <no_reply@...> wrote:
>
> What? Where's the forecast? How come? The heat, man, the heat.
Do
> your own due diligence. Forecasters help in the fall thru spring,
and
> fall on their faces during the thermal season. Just too micro-
climate
> for them, methinks.
>
> Bottom line, wanna sail? Pay attention to some sensors on or
about
> noon to one or so. It was 96 degrees in north Cocoa at 12:30
Sunday.
> There's a sensor at 528 and US1 that shows wind and temps on URL
> www.dugong....etc. It's on the links page.
>
What? Where's the forecast? How come? The heat, man, the heat. Do
your own due diligence. Forecasters help in the fall thru spring, and
fall on their faces during the thermal season. Just too micro-climate
for them, methinks.
Bottom line, wanna sail? Pay attention to some sensors on or about
noon to one or so. It was 96 degrees in north Cocoa at 12:30 Sunday.
There's a sensor at 528 and US1 that shows wind and temps on URL
www.dugong....etc. It's on the links page.
If you have been missing your favorite webcams for our local beaches,
they are still there, just different addresses. The Cocoa Beach cams,
including Jetty Park, The Pier and the 2 cams a little further south
are now at http://www.orlandosclosestbeach.com/ As far as I
understand it, you have to go to their website first and then clik on
the webcam you want.
For the cams from Boardwalks to Sebastian Inlet go to
http://www.surfguru.com/surfcams.asp . This site(formerly Brevards
Best Beaches) has been taken over
by Surf Guru but the cams are free even though you have to put up with
a little advertising before the cams are available. They have added a
streaming feed with controls for Boardwalks.
Webcams in the Links section on the ECFW has been updated with this
new info. http://sports.groups.yahoo.com/group/ecfw/
For anyone who'd interested, I've got a photo album from an early July
trip to the Gorge I took with ecfw member Bruce Thomas and a bunch of
other people. I've got a bunch of good sailing shots, mostly of
Bruce, which I think are some of the best sailing shots I've ever
taken. The locals were telling us we caught the best wind of the
summer. It was definitely windy. At times too windy. For example,
there was one day at Doug's when I didn't see any sail on the water or
the beach bigger than a 3.7. We sailed another day at the Hatchery
where I was wildly overpowered on a 4.0!
Dave O
http://community.webshots.com/album/552204301zBRGpr
Try the KSC Radar at
http://science.ksc.nasa.gov/shuttle/countdown/video/
Clik on Weather Stream and wait for the radar to loop into view.
May take a couple of loops to remember all that you see as the
segments are rather quick.
Was good to get on the water for sure. Passed ove some sites on the
way back home from Palm Bay. Have a better idea where Scurrah's is
now. The wind looked lightish when I crossed the Indian R. mid
afternoon. And, there was a large black thing immediately west of
Melbourne...
Just a reminder, that occasionally we do get wind here in east central
Florida in the summer. Missed the early afternoon stuff but
perservered and got some of the table scraps after 6:00. Wished you
all were there.
Ponce inlet, 13-20 mph winds, overhead waves, Exo-Wave 105 and the 7.4
Cuben. Life is really good when it all comes together like yesterday.
Rides were easier early on. Sideshore winds helped, so did a slack
tide. Stayed overpowered for max drive on frontside wave rides when
the wind turned sideon and picked up.
Sailing overpowered really helps in onshore conditions. Doing
frontside rides makes one lose alot of ground, downwind. Getting back
upwind is easier when overpowered. Got tons of rides. The glassiness
of the waves on the New Smyrna side of the inlet was amazing. Jetty
manifests that too, but Ponce really delivers some perfectly smooth
waves, nice.
Looked promising when I got to Scurrah's rigged up and made one planing run and the wind dropped below the ol' threshold so schlogged around for awhile and came back in. Meanwhile a few kiters came, talked a bunch and left around 6:15. Just had a hunch that the sea breeze would fill back in as soon as that big TS to the NW played out or died. And my patience was rewarded with an 1.5 hours of lit up 18 to 20 ish rock solid, spanky old sea breeze from 6:30 to 8:00. Sailed non stop and left satiated and tired with that warm fuzzy feeling you get in the afterglow from a good sesh. Wished you all were there.
Yes it was real nice. I was on 11.7 fully powered @ Kelly park. Got
lucky because I had a limited time window to sail and the wind was 2 to
4 knots when I rigged. As soon as I hit the water the first puff came
and I pretty much never lost the plane after that! It makes-up for a
few times when the wind died as I rigged this winter....
Seems that others caught some waves and that overall a lot got some
fun time on the water. That is good!!
The shuttle launch was nice, it was my first.
Vincent.
--- In ecfw@yahoogroups.com, dfink2@... wrote:
>
> 2 hours board time at BRR. Stopped to watch shuttle launch. What a
> spectacular sight!! No better day than the 4th to have a launch as
> luck would have it.
>
> ENE winds increased after shuttle launch.. occasional up on plane.
> Sailed 6.9m w/Prodigy.
> Fun!!
>
> Dave
>
2 hours board time at BRR. Stopped to watch shuttle launch. What a
spectacular sight!! No better day than the 4th to have a launch as
luck would have it.
ENE winds increased after shuttle launch.. occasional up on plane.
Sailed 6.9m w/Prodigy.
Fun!!
Dave
sketchy NE winds and some crowds at Cherie on monday. good waves and
just enough wind to make slogging out and grabbing waves easy with the
7.4 and the S-4. tuesday was insane to get to the beach, settled for
Kelly. 9.0 and S-4 was good over 70% of the time on the water. Lots
of pumping. Good to get the shuttle out of the way. Fair winds and
following seas to their op's. Hope all is successful from here on out.
Dan S. and I got the best of the wind starting after 2:00. Sketchy from time to time, but overall glad I was there. Enough wind for the 7.2 & 6.4 and I was pretty tired after a couple of hours of the mostly east wind. The once a year park visitors made it challenging for the kiters to land their kites and not hit the tent in their landing zone and us windsurfers to just walk our gear off the water because of the crowd blocking our path.
.MARINE...EASTERLY FLOW MAY TOP OUT AS HIGH AS 15 KT TODAY AND
TONIGHT. THIS WILL RESULT IN SEAS OF 2-3 FT BUILDING TO 3-4 FT.
SUN-WED...RATHER STRONG SURFACE RIDGE WITH AXIS TO OUR NORTH WILL
MAINTAIN AN EAST/SOUTHEAST FLOW. THE LATEST GFS INDICATES GENERALLY
10-15 KNOT FLOW...BUT AT TIMES MORE LIKE A SOLID 15 KNOTS. EXPECT
THAT SEAS WILL BE 3-4 FEET WITH A 5-6 SECOND PERIOD. WITH DURATION
AND FETCH INCREASING...WILL HAVE TO WATCH FOR A LITTLE HIGHER SEAS
DUE TO A 8-9 SECOND FRESH SWELL DEVELOPING.
Hot and rainy wed-thur but just mostly hot today. Cool webcam.... now we can watch so don't do anything I wouldn't do.. on camera that is. :)
oh BTW... I was out at Howard Park again last weekend and racked up 3.5 hours board time for one day.... hands are callused and was sore for two days but smiling...
Greg.. I have been practicing on the Equipe. Fast board. Like it. Thanks.
The Windsurf Place has a new webcam. It's free. If you see some cool NP sails it's me and Greg. We have the only ones. Lately the wind has been 4.2 for me. Seems it's not so windy today. I need a rest. Heard it was hot and rainy in Florida.
http://www.bonairewebcams.com/WindsurfCam.php Beth __________________________________________________________ Check out AOL.com today. Breaking news, video search, pictures, email and IM. All on demand. Always Free.
The Windsurf Place has a new webcam. It's free. If you see some cool
NP sails it's me and Greg. We have the only ones. Lately the wind has
been 4.2 for me. Seems it's not so windy today. I need a rest. Heard
it was hot and rainy in Florida.
http://www.bonairewebcams.com/WindsurfCam.php
Beth
________________________________________________________________________
Check out AOL.com today. Breaking news, video search, pictures, email
and IM. All on demand. Always Free.
Hi, Mike.
My phone crashed in water (don't ask how...) since the last time we
talked so I lost all the numbers in memory including yours. If you
want to call me Sat, my new phone has the same number....
Best regards
Vincent.
--- In ecfw@yahoogroups.com, Michael Rayl <mrayl11@...> wrote:
>
> Hi Vincent,
> I'll be here, give me a call about sailing.
> Mike
>
> vincent_h_barre <no_reply@yahoogroups.com> wrote:
> Hi,
>
> Anyone interested in playing on Formulas this week-end? I may be
able
> to sail after the Shuttle launch this Saturday and Sunday in the
area.
>
> Best regards.
>
> Vincent.
>
>
>
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
Hi,
Anyone interested in playing on Formulas this week-end? I may be able
to sail after the Shuttle launch this Saturday and Sunday in the area.
Best regards.
Vincent.
If you want to follow Nancy's bid to make the Olympic Team, she has
started 2 personal webpages to keep us up to date. Both sites allow
her to report all that she cares to share on her travels down the
trail. Her first stop, of course is Weymouth, England this July and
then China this August.
http://360.yahoo.com/riosnadhttp://www.myspace.com/riosna
I have listed this also in the "Links" on the website under Nancy Rios.