FKA Kiteboarding Forums  

Go Back   FKA Kiteboarding Forums > SE Florida And The Keys Forum > What's happening?
Connect with Facebook

Thread Tools Display Modes
Old 06-04-2007, 10:57 PM
RickI's Avatar
RickI RickI is offline
Site Admin
Join Date: Jul 2004
Location: Florida
Posts: 8,564
Default T H E R M A L Wind!

Wow, it really went off today across most of SE Florida. It started up slowly starting at midday and boosted with gusts approaching 25 mph late sideshore from the SSE.

A plot from Delray's Windomatic

Then around an hour before sunset it was if someone hit a switch and the thermal wind vanished in minutes to be replaced with the forecast offshore westerly flow the day started out with.

Gusts recorded at Delray

Look at the air temperature. Right around the time of the sideshore from offshore wind direction shift it plunged 5 degrees and at the time the wind ended it boosted right back up. The thermal winds are largely a product of air temperature differentials and related pressures between the land and sea.

The thermal winds extended over most of SE Florida as opposed to other instances were it can be fairly localized. Here is a plot from Key Biscayne.

Here is a plot from further north at Jupiter. Note the violent wind direction changes and gust spike indicative of a squall. The wind stabilized a bit later than further south and lasted about a half hour longer.

Thermal winds aren't always that easy to predict for a given area however if conditions are clear and sunny the odds improve for thermals to turn on. NOTE: regional winds were OFFSHORE today but coast conditions were governed by sideshore thermals for a while. ONCE the conditions ended the wind shifted offshore. If you were out once the wind died and shifted away from land you might fall into some trouble. Guys have lost boards before and it conceivable that some riders might get lost themselves if far enough offshore once the shift comes.

It wouldn't surprise me to see this happen a few more days this week. Keep your eyes peeled and if it comes on lets us know with a post on "HOWZAWIND?"

Rideable conditions continue, fingers crossed.
FKA, Inc.

transcribed by:
Rick Iossi
Reply With Quote
Old 06-04-2007, 11:30 PM
Posts: n/a
Default Thermal

got it from 5:30 to 7:30 hope it happens tomorrow
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -5. The time now is 09:35 PM.

Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.

Do not advertise outside of [COM] Forums.
Do not show disrespect for others in your postings.
Users can be denied access to this Site without warning.
FKA, Inc., it’s officers and moderators are not responsible
for the content of the postings and any links or pictures posted.

Report Problems by PM to “administrator” or via email to

Copyright FKA, Inc. 2004, All Rights Reserved.