sail-world.com
 
 
News Home Video Gallery Photo Gallery
Sail-World.com : Audi Hamilton Island Race Week Day 2 - Weather forecast
Audi Hamilton Island Race Week Day 2 - Weather forecast


'Surface chart 19th August - Audi Hamilton Island Race Week 2013'   

Audi Hamilton Island Race Week Day 2 - Weather forecast issued by Kenn Batt at 0630hr for Monday 19th August 2013.

A weak high [1019 hPa] over the southern Coral Sea is expected to move slowly eastwards, maintaining a weak ridge onto the tropical east coast of Queensland. A surface trough of low pressure lies to the west of the area. This trough is expected to cross the coast early tomorrow morning.

Observations:

At 0600hr the surface wind at Hamilton Island was 270 deg at 3kn, gusting 4kn (temp 20C, pressure 1017hPa). At Hardy Reef (further offshore at 19.7S 149.2E) the wind was 090deg at 3kn.

Forecast Winds for Surprise Rock (to E of Hamilton Island) (Read Discussion below)

1000:MD060 DR(040-090) MS03 SR01-07kn could be light and variable?
1200:MD060 DR(040-090) MS05 SR02-10kn could be light and variable?
1400:MD050 DR(030-080) MS08 SR03-12kn
1600:MD050 DR(030-070) MS10 SR05-14kn
1800:MD030 DR(360-050) MS09 SR04-13kn

Note: The wind in the Whitsunday Passage is expected to commence as340-360deg at 2-6kt (ave) this morning before slowly shifting right to be 360-040deg at 6-10kn (ave) by mid-afternoon.

Key: First column is mean wind direction in deg Magnetic (MD). It is the 10min average (mean) value at a height of 10m above the water leading up to the hour quoted. The second column is the directional range (DR) of the wind direction in deg Mag. This takes into account the natural oscillation of the wind and is a function of the atmospheric stability, etc. The third column is the mean speed (MS) in knots (kn) and is the average 10min value leading up to the hour quoted at a height of 10m above the water. The last column is the wind speed range (SR) in knots and is the lowest wind speed to highest wind speed in the 10min leading up to forecast hour.

Forecast chart for 4pm 19th August - Audi Hamilton Island Race Week 2013 -    

Discussion:
All models are pointing towards light synoptic NW to NE winds first up this morning tending to a pure sea breeze this afternoon.

The forecast gradient wind (wind at 900 metres) is expected to be 340-360deg at 10-15kn This scenario normally favours a sea breeze situation.

If the gradient wind increases to 15 to 20kn, then the sea breeze potential will drop to zero and a 320-340deg at 8-15kn will prevail over the race area? There is a 55% chance of this occurring?

There is also a 30% chance that the surface trough pushes east over the race area today. This would see the surface wind commence as 320-340deg at 6-12kn (ave) shifting to 260-220deg at 8-14kn (ave) then easing and shifting 140-090deg at 5-10kn (ave) behind the trough.

Wind direction and speed is expected to become more variable than forecast above over most parts of the race course due to changing topographical profiles i.e. wind speed enhancement (+3kn or so) due to funneling out of bays, some speed enhancement and wind directional changes around headlands and in passages. Lighter and more variable winds in the lee of islands, etc

Natural wind direction oscillations: around 20 to 30 deg, more/less due to topographical influences.

Weather:
Early low cloud or fog clearing to a mostly sunny day. Slight chance of a late afternoon or evening shower.
Maximum land temperature at Hamilton Island: 25 degrees.
Sea Temperature: about 21-22 degrees.

Wind Waves:
0.2 to 1.0 metres, less in lee of land, more when wind wave opposes tidal current.
(Wave heights quoted are Significant wave heights).

Current: A strong ebb this morning followed by slack water and then a strong flood developing late this afternoon/evening. Be extremely careful in channels, etc.
Remember: In general tidal currents flood to the south and ebb to the north in the Whitsundays. There are many localized variations however so be very vigilant.

Tide at Shute Harbour: High of 2.95 at 0910hr, Low 0.11m at 1458hr and High 4.00m at 2140hr.

Outlook: Tuesday: S to SE at 8 to 16 kn (ave).


by Kenn Batt

  

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

http://www.sail-world.com/index.cfm?nid=113359

12:42 AM Mon 19 Aug 2013GMT


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

Click for further information on
2013 Audi Hamilton Island Race Week 2013

Related News Stories:

19 Aug 2013  Audi Hamilton Island Race Week - Shifting winds and courses
19 Aug 2013  Audi Hamilton Island Race Week - Moran, Kwong and Bennett Takeover
19 Aug 2013  Audi Hamilton Island Race Week 2013 Day One - Full Results
19 Aug 2013  Audi Hamilton Island Race Week Day 2 Dawn and a Bundy kind of day
19 Aug 2013  Audi Hamilton Island Race Week - Landmark occasion in the Whitsundays
18 Aug 2013  Audi Hamilton Island Race Week - A gentle opening + Video
18 Aug 2013  Audi Hamilton Island Race Week - the first cartoon for 2013
18 Aug 2013  Audi Hamilton Island Race Week Weather Forecast
18 Aug 2013  Audi Hamilton Island Race Week Day One - A great day ahead
17 Aug 2013  Audi Hamilton Island Race Week- Final countdown to 30th anniversary
MORE STORIES ...






News - USA and the World

America's Cup: Expected de Ridder penalty should be reduced *Feature by Richard Gladwell/Sail-World.com/nz, Auckland, NZ


HUD Vision: An interview with Afterguard Marine’s Alex Moret by David Schmidt, Sail-World USA Editor, Seattle




























Congressional Cup - Victory for Taylor Canfield and crew by Rich Roberts (As Amended by ISAF),




2014 Halifax – Saint-Pierre Ocean Race by Patricia Nelder, Nova Scotia














Image Gallery: Stratis SL33 flies on the Waitemata by Richard Gladwell,Sail-world.com/nz,


Audi Melges 20- Sperry Topsider Charleston Race Week - Light final day by International Audi Melges 20 Class Association,
















America's Cup: Gino Morrelli outlines the new AC62 design
Doyle Sails New Zealand signs Andrew Brown as One Design Manager
America's Cup: Dean Barker's Blog - A sail with the Duke and Duchess *Feature
29er World Youth Sailing Week Easter regatta - Day 1 and 2 overall
C Thomas Clagett Jr Memorial Clinic/Regatta - Entries start to roll in
50th Congressional Cup: See the delayed coverage and media conferences
Clipper Race 10 Day 27: Closing stages - Qingdao to San Francisco
Canfield, Williams, Bruni, Swinton in Congressional Cup final four
Sperry Top-Sider Charleston Race Week - Day 2
Audi Melges 20 Charleston Race Week - Perfect conditions in Charleston
Oyster Regatta Antigua - Full on ocean conditions for day 3
PWA World Tour - A taste of things to come at La Torche + Video
Women's International Match Racing Series kicks off in June
Melges 32 Audi Tron Sailing Series - Action shots by Max Ranchi
Clipper Round the World Yacht Race - Frustrating conditions
Man rescued after falling overboard in Pacific taken to hospital
Sperry Top-Sider Charleston Race Week 2014 - Youth leading Melges 20
Congressional Cup - Canfield leads toward Congressional Cup sailoffs
Sperry Top-Sider Charleston Race Week 2014 - Perfection for Day 1
America's Cup: Coutts claims ISAF Jury on a crusade, backs Kiwi report *Feature
Clipper Round the World Yacht Race - Will light winds hamper progress?   
Les Voiles de St. Barth - Preparing to rock Saint Barthélemy waters   
Clipper Round the World Race - OneDLL and Qingdao now in San Francisco   
America's Cup: Emirates Team NZ up against funding hurdle for year *Feature   
Melges 32 Sailing Series Napoli - Day 1 images by Stefano Gattini   
50th Congressional Cup: View the Live racing here   
Melges 32 Sailing Series - Napoli action shots by Max Ranchi   
Volvo Ocean Race - Team Alvimedica launch new boat   
Emirates Team NZ: Royals duke it out on the Waitemata   
2014 Charleston Race Week - Thousands of sailors descend on Charleston   
The Congressional Cup 2014 - Williams hangs on with a classy crowd   
50th Congressional Cup: View the Live racing here   
RORC Transatlantic Race - Notice of Race now available   
Oyster Regatta Antigua - Sunshine and smiles on day 2   
Rolex China Sea Race on the horizon   
What can a boat name tell you about the person behind the helm?   
Clipper Round the World Yacht Race - Race 10 rumbles on   
SAP 5O5 World Championship - Kiel action starts August 13th   
Volvo Ocean Race - It's a family Affair   
Clipper Round the World Race - Great Britain claims line honours   


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 US