sail-world.com
 
 
News Home Cruising Australia Cruising USA Cruising Canada Boats for Sale Sail-World Racing Photo Gallery FishingBoating
Photo Gallery FishingBoating Video Gallery Newsletters
Sail-World.com : How to predict combination afternoon breezes
How to predict combination afternoon breezes

'Coastal sailing - how will I know what the wind will do this afternoon?'    .    Click Here to view large photo

How can you predict the effects of a sea breeze when combined with a coastal wind? Will this mean sail reefing this afternoon or a wind light enough to fly a spinnaker? Learn how to forecast coastal wind effect with these sailing secrets from John Jamieson (Captain John):

Winds caused by pressure differences create prevailing winds. After blowing for several hours, a prevailing wind aligns itself in a direction, parallel the coastline.

If local sea breezes are strong enough, they can modify the direction and speed of the prevailing coastal wind.

These effects might not be included in a marine weather forecast. Use these easy steps to make your own sailing weather forecast:

What causes a sea breeze? -  .. .  
1. Listen to the forecast prevailing wind

Tune in to the closest weather channel on your marine radio. Copy down the forecast coastal winds direction and speed.

For example, let's say that a northerly wind has been blowing for several hours along the coast. The marine forecast calls for northerly winds at 15 knots this afternoon.

2. Estimate the afternoon sea breeze

Make a determination as to whether to modify the forecast based on cloud cover. Cloudless days mean stronger afternoon sea breezes. Partly cloudy or overcast days indicate lighter sea breezes. In our example, you observe a cloudless sky, so you should expect a strong easterly sea breeze to fill in by early afternoon.

3. Combine directions and speeds

In the afternoon, the prevailing wind and sea breeze will combine to produce an average direction--northeasterly in the example. The strong sea breeze could increase the prevailing wind speed by 50%, or up to 22 1/2 knots.

Whether the winds increase that much depends on meteorological conditions, but you and your sailing crew will be ready in any case.

John Jamieson (Captain John) with 25+ years of experience shows you the no-nonsense cruising skills you need for safer sailing worldwide. Visit his website at www.skippertips.com and sign up for his FREE highly popular Sailing Tip of the Week. Discover how you can gain instant access to hundreds of sailing articles, videos, e-Books and more!


by John Jamieson

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=102775

6:04 AM Wed 10 Oct 2012GMT


Click here for printer friendly version
Click here to send us feedback or comments about this story.


Related News Stories:

21 Sep 2012  Seven annual sailing season inspections to save you money!
17 Sep 2012  Singapore Sailing Federation: Sail in the City
15 Sep 2012  Classic Asymmetric Sail Mistakes - And How to Avoid Them
26 Jul 2012  Loving your dinghy - Tips in dinghy dexterity
25 Jul 2012  Flotilla Sailing Holiday increases the sailing skills
23 Jul 2012  Boat Docking Classic event attracts the champions
20 Jul 2012  Jackstays and Jacklines: The options for the cruising sailor
06 Jul 2012  Ambition to be a serious boat builder? Here's your chance
03 Jul 2012  Long Distance Sailing Seminar, 18th August, London
13 Jun 2012  Medical Management for Mariners - new course starting
MORE STORIES ...






Sail-World Cruising News - local and the World











World ARC crews in Bali by World Cruising Club,




Could your sailing navigation use a tune-up? by Captain John Jamieson, Florida










The Boat Cookbook by BoatBooks,










World ARC fleet now arriving in Bali by World Cruising Club,
















Pack this sailing gear for 'hands-free' lighting by Captain John Jamieson, Florida
















Africa Europe Challenge introduces 'Spectator's Package'
Wanted youth circumnavigators on a 'Voyage of Imagination'
Niagara-on-the-Lake, a popular cruising destination in Canada
The crowd-pleasing comforts of catamaran cruising
Death by Dinghy
'Sailing Stones' of Death Valley seen in action for the first time
Coast Guard searching for two boaters near St. Petersburg
20 coral species listed as threatened under the Endangered Species Act
Shanghai to San Francisco in under 2 hours via supersonic sub
PSP Southampton Boat Show 2014 - 2 for £24 ticket offer ends soon
A case of crossed wires? A shocking situation!
How amazingly awe-inspiring the Arctic really is
New atlas provides thorough audit of marine life in the Southern Ocean
European Odyssey boats arrive in Lanzarote + Video
Multiagency rescue at Dunraven Bay + Video
Canal Boating in the Alsace with the Galley Guys
World ARC fleet arrives in Darwin
Dangers of the Dinghy trip back to your boat
European Odyssey visits Porto
Timeless Tonga - Charter sailing in a Polynesian paradise *Feature
A fine conclusion to the ARC Baltic 2014   
Where in the world are our strongest corals?   
Baltic 4 Nations fleet arrive into Stralsund City Marina   
Huff of Arklow nearing completion, expected on the water next month   
Incredible efforts to save yacht from being lost at sea   
ARC Baltic fleet visit six countries and six capitals in six weeks   
Helen Island, Palau -a beautiful and unique place   
Bart's Bash: Over 2300 entered from 588 yacht clubs - Join here   
Barnacle Busting   
From Penguins to Polar Bears   
Cornell turns back from the North West Passage   
A cruising guide to the ABC Islands - Spanish Edition   
Missing German tourists in the hands of Abu Sayyaf Group   
NCI granted dedicated VHF Channel   
Positive news for cruising boats in Greece   
Bivalves' ability to clean chemicals from waterways   
Are You Sailing with 'Weak Links' in your sailing rigging?   
Week-long cruise turns into 16-year round-the-world voyage   
World ARC fleet cruising the Coral Coast   
Four rescued after narrow boat collides with houseboat   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph, contact the photographer directly.
XLXL NEW CRU NH
LocalAds   DE  ES  FR  IT