Sail-World.com : Audi Hamilton Island Race Week Day 5

News Home

Cruising

Photo Gallery

Video Gallery

Sail-World.com : Audi Hamilton Island Race Week Day 5 - Weather forecast

Audi Hamilton Island Race Week Day 5 - Weather forecast

'surface chart 23rd August - Audi Hamilton Island Race Week 2013'

Audi Hamilton Island Race Week Day 5 - Weather forecast issued by Kenn Batt at 0615hr for Friday 23rd August 2013.

Nil Warnings current.

Synoptic Discussion:
A weak ridge of high pressure persists over the race area.

Observations:
At 0600hr the surface wind at Hamilton Island was 160 deg at 7kn, gusting 9kn (temp 18C, pressure 1018hPa). At Hardy Reef (further offshore at 19.7S 149.2E) the wind was 110deg at 07kn.

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

0800:MD150 DR(170-130) MS08 SR05-12kn
1000:MD130 DR(150-110) MS10 SR06-14kn
1200:MD110 DR(130-090) MS11 SR07-15kn
1400:MD100 DR(120-080) MS12 SR08-16kn
1600:MD090 DR(110-070) MS14 SR09-17kn
1800:MD080 DR(100-060) MS12 SR08-15kn

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 23rd August - Audi Hamilton Island Race Week 2013 -

Discussion
All the computer models that count are in good agreement.

The gradient wind is expected to change from about 160deg at 10kn this morning to lighter and more variable this afternoon. As such the surface wind is expected to commence from 150deg and trend left during the day under the influence of the sea breeze component.

The difficult questions are still however:
1. How far left? The weak sea breeze component should assist the left trend. For your racing period a max left of 060deg is possible.
2. How quickly will the direction trend left? I’m happy with forecast above however there is a 65% chance that the direction shifts more slowly than above.
3. How strong the winds? Pretty happy with the wind ranges above, however there is a 85% chance that the wind speeds could be about 2kn stronger from mid-afternoon? The sea breeze component will again assist here.

Wind direction and speed is expected to be more variable than forecast above over parts of the race course (especially within the general Whitsunday Passage area) due to changing topographical profiles i.e. wind speed enhancement (+2 to 5kn) 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
Dry and sunny.
Maximum land temperature at Hamilton Island: 23 degrees. Proserpine: 26deg
Sea Temperature: about 22 degrees.

Wind Waves:
0.2 to 0.6 metres.
Heights less in lee of land and more when wind wave opposes tidal current.
(Wave heights quoted are Significant wave heights).

Tidal Current: A strong flood first up this morning followed by slack water and then a strong ebb developing this afternoon.

Be extremely careful in narrow 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:
Low 0.38m at 0601hr, High of 3.10m at 1211hr, and Low 0.52m at 1802hr. (know your time offsets for other locations around the race courses)

Outlook
Saturday: Light and variable at first becoming SE to E at 8 to 14 kn (ave) during the late morning and afternoon. Dry and sunny.

by Kenn Batt

Tweet

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

http://www.sail-world.com/index.cfm?nid=113533

9:24 PM Thu 22 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:

23 Aug 2013	Audi Hamilton Island Race Week - Full results for day 4
23 Aug 2013	Hamilton Island Race Week - Latecomer stuns in non-spinnaker div 1
22 Aug 2013	Morning lottery leads into magic at Audi Hamilton Island Race Week
22 Aug 2013	Audi Hamilton Island Race Week - No stopping Nessie
22 Aug 2013	Audi Hamilton Island Race Week - Holy Cow, the whales are back !
22 Aug 2013	Audi Hamilton Island Race Week - Lay day cartoon series
22 Aug 2013	Audi Hamilton Island Race Week - Cartoon series by Mark O’Brien
21 Aug 2013	Audi Hamilton Island Race Week - Cartoon series by Mark O’Brien
21 Aug 2013	Audi Hamilton Island Race Week - Full results for day 3
21 Aug 2013	Audi Hamilton Island Race Week - Day 3 images by Andrea Francolini

MORE STORIES ...

News - USA and the World

Rolex Big Boat Series - Golden Jubilee to take place this September by Barby MacGowan,

One hundred and sixty-five years after a flood of fortune seekers headed to San Francisco in search of riches during the Gold Rush of 1849, a new generation of prospectors will be panning for treasure during the 50th anniversary 'Golden Jubilee' edition of the Rolex Big Boat Series (RBBS) scheduled for September 11-14 at the St. Francis Yacht Club on the Marina.... [more]

DH Pacific Cup - Running with the pack + Video by Erik Simonson,

Bill and Melinda Erkelens complete their second DH Pacific Cup, this time aboard the borrowed Donavan 30' Wolfpack, built in the 1980's to the 1/4 ton rule. Bill explains how their second go around went, how the boat performed and why sailing with Melinda makes things easy!... [more]

Six Metre European Championship - Day 4 by Fiona Brown,

2014 International Six Metre European Championship - After a two-day hiatus, the fourth day of the Six Metre European Championship in Falmouth finally produced a much-needed third race for the twenty-seven competing teams. The wind failed to cooperate for much of the day and it wasn't until 17.30 that the race finally started in a rainy nine knots from the northeast.... [more]

BIC Techno 293 Worlds 2014 - Day 4 by Patrik Pollak,

2014 Techno World Championships - No problem!!! We had cart world championship with some very, very attractive prizes. Some exercise, lot of fun, lot of smiles.... [more]

Women's Match Race Golfe du Morbihan - Testing day in Vannes by WIM Series,

Starting with a totally calm and sunny morning, and finishing the day in thunderstorms and heavy rain, the Women’s Match Race Golfe du Morbihan in Vannes, France, put the sailors to the test on the first day of racing. Four teams stay undefeated, with home sailor Anne-Claire Le Berre and Dutch veteran Klaartje Zuiderbaan sharing the top spot on four victories.... [more]

International Moth Worlds: Outteridge charges into the lead + Video by Mark Jardine / YachtsandYachting.com,

An earlier start allowed the Gold fleet to get a full four races on the penultimate day of the International Moth World Championships at Hayling Island, with the Silver fleet once again getting in three. The breeze was a gusty and shifty 8-13 knots, which dropped off during the final race as it shifted round to the East. Once again racing was held in scorching temperatures under a cloudless sky.... [more]

Marina Rubicón Round Canary Islands Race - First blood to Team Brunel by Volvo Ocean Race,

Team Brunel claimed pole position in the first competitive meeting of the new Volvo Ocean 65s, as the inaugural edition of the Marina Rubicón Round Canary Islands race took place in Lanzarote this week. 'The race was really fun, with various conditions,' said Team Brunel’s Lithuanian crew member Rokas Milevi?ius.... [more]

ISAF Youth Match Racing Worlds - Competition heats up on day 2 by ISAF,

The ISAF Youth Match Racing World Championship on water action matched the warm climate as the competition heated up on day two in Helsinki, Finland. Temperatures in Helsinki reached a new summer high but that not did stop the on-water action with 12 more flights completed. The situation is incredibly tight ahead of the last ten flights.... [more]

Laser Radial World Championships - Competition aplenty on day 3 +Video by SailingNet,

Day three at the Laser Radial World Championship was different. The sailors were greated by a beautiful, blue sky, light wind and sunny weather. Everybody was asking one question: where is the fog? From the beginning of the championships misty mornings started to be something usual for us.... [more]

Extreme Sailing Series - Penultimate Act to take place in Nice by Extreme Sailing Series,

Extreme Sailing Series organiser OC Sport has now confirmed the bustling Mediterranean city of Nice as the Host Venue for the penultimate Act of the 2014 season, to be held 2-5 October. Hosted by Ville de Nice, the Extreme Sailing Series has been a regular feature on the city’s sporting calendar since 2011.... [more]

Leukemia Cup - Images by Leighton O'Connor by Leighton O'Connor,

The Leukemia Cup took place July 19-20, 2014 in Atlantic City, New Jersey. Check out these images by photographer Leighton O'Connor.... [more]

Maxi Yacht Rolex Cup - Meeting of the grand designs by KPMS,

Maxi Yacht Rolex Cup 2014 - Owned and helmed by individuals accustomed to success outside of sport, sailed by outstanding professional talent and designed by architectural visionaries, the world’s most impressive monohull yachts - known in the sailing community as Maxis - are admired for their speed, power and elegance.... [more]

29er North American Championship - Final series kicks off by Marianne Davis,

Today kicked off the final series of the 29er North American Open, in which competitors are competing for the North American, United States and Canadian Championships. Competition is strong in the final series, with the fleet now split into gold and silver.... [more]

29er World Championship 2014 set to start in Kingston, Ontario by Jerelyn Biehl,

The Cork facilities in Kingston, Ontario, Canada will play host to 102 teams representing 14 nations for the 2014 29er World Championship. Participants will include 10 ISAF Youth World teams fresh from Tavira, Portugal including gold medalists Brice Yriex and Loic Fischer-Guillou (FRA) and silver medalist crew Riley Gibbs (USA).... [more]

Barcelona and Parnu chosen for 2015 ORC championship events by ORC,

Joaquín Barenys, Vice Commodore of RCNB and Chairman of the Organizing and Events Committee of the 2015 ORC World Championship, expresses the satisfaction for RCNB to host this major intercontinental sailing event: 'For the Real Club Náutico de Barcelona it is a great satisfaction for us to be the organizer of the 2015 ORC World Championship.'... [more]

2014 Race for Rady Yacht Race - Benefiting Rady Children’s hospital by Mari Hamlin Fink,

Race for Rady is a benefit for Rady Children’s Hospital Peckham Center for Cancer and Blood Disorders and will be held on Saturday, September 20 - Sunday, September 21... [more]

CMRC Summer Invitational Series - Doubleheader events start tomorrow by Dobbs Davis,

Tomorrow the Chicago Match Race Center (CMRC) will host two consecutive Grade three match race regattas in the CMRC Summer Invitational series, with 10 teams from as far away as Singapore coming to compete for one or both of these two-day events... [more]

BIC Techno 293 Worlds 2014 - Day 3 by Patrik Pollak,

2014 Techno World Championships - They fight hard on the race course but have a lot of fun at the same time. Like today third day of racing at the 2014 World championships.... [more]

Sailing through STEM Night at California YC by Jake Fish,

US Sailing has partnered with the United Sates Optimist Dinghy Association (USODA) and the California Yacht Club (CYC) in Marina del Rey to create new pathways for our youth sailors in STEM (Science, Technology, Education, Math) education. The CYC is hosting the 2014 USODA National Championships for youth sailors aged 10 to 15 from all over the country on July 19-27.... [more]

Six Metre European Championship - High temps and little wind on day 3 by Fiona Brown,

The forcast for the third day of the Six Metre European Championship was for strong sun, high temperates and little or no wind, and unfortunately it was not wrong! Despite everyone's best efforts no racing was possible for the second day running.... [more]

Women’s Match Race Golfe du Morbihan - Light wind opener in Vannes by WIM Series,

The Women’s Match Race Golfe du Morbihan, the second stage of the 2014 Women’s International Match Racing Series, started Wednesday with a practise session followed by the official opening ceremony in Vannes.... [more]

International Moth Worlds: Rashley ahead as Aussies close in by Mark Jardine / YachtsandYachting.com,

The Moth Worlds fleet woke up to a glorious day at Hayling Island. The wind was blowing a steady 15 knots, the sun was shining and it was 23 degrees by 10am - perfect sailing conditions. The Gold fleet went out into Hayling Bay, while the Silver fleet headed off East to Bracklesham Bay.... [more]

ISAF Youth Match Racing Worlds - American unbeatable on day 1 by ISAF,

America's Nevin Snow was unbeatable on the opening day of the ISAF Youth Match Racing World Championship in Helsinki, Finland as he stormed to five victories. The day started sunny with some light breeze present. The Race Committee was able to complete the first two flights before the forecasted wind direction change took place.... [more]

RS Feva World Championships - All set at Yacht Club de Carnac by Pip Baily,

There is less than a week to go until the 2014 Allen RS Feva World Championships held at Yacht Club de Carnac, France. 184 boats - 368 sailors and numerous parents, siblings and supporters from all corners of Europe, North America, Argentina, Russia and Hong Kong are preparing to travel to the beautiful French location for this year’s event.... [more]

ISAF Rolex World Sailor of the Year Awards - Nominations now open by ISAF,

Nominations are invited for the 2014 ISAF Rolex World Sailor of the Year Awards, the most prestigious award of recognition in the sport of sailing. Since the first Awards presentation in 1994, the nominees and winners have always included the highest achievers from all disciplines of the sport.... [more]

BIC Techno 293 Worlds - Steady winds on day 2 + Video by Techno 293,

The wind blew more steadily for the second day of the Techno 293 World Championships in Brest allowing three races for the 400 windsurfers. 2014 European Champion, Tom Monnet, representing France at the forthcoming Youth Olympic Games, is top of the youth u17 leaderboard with two firsts and a second in the blue group today.... [more]

29er North American Open Championship - Qualifying series wraps up by Marianne Davis,

The second day of the 29er North American Open brought another day of sun and a six knot breeze. Both the yellow and blue fleets completed another three races to wrap up the qualifying series. Marte and Carla Munto from Spain is leading the fleet ahead of Australias Kurt Hansen and Harry Morton. Top Canadian boat Ryan Wood and Andrew Wood from West Vancouver is third.... [more]

Opening ceremony O'pen Bic World Cup, Travemunde Week, Germany by Simon Dubbin, Travemunde

The event is part of the famous 'Travemunde Regatta Week' which is in its 125th year. Australia and New Zealand are represented with six competitors amongst a fleet of more than 130 from 11 nations.... [more]

Six Metre Europeans - Wind fails to make an appearance on day 2 by Fiona Brown,

Sadly the wind failed to make an appearance on day two of the Six Metre European Championship in Falmouth and the twenty-seven strong fleet experienced a frustrating day of waiting in vain. Initially the Race Committee held the fleet ashore for a three-hour postponement, but by early afternoon there were signs of a sea breeze so the boats set off for the race area.... [more]

Edgartown Race Weekend - Let the sailing (and good times) begin by Barby MacGowan,

It’s time again for Edgartown Yacht Club to host its annual Edgartown Race Weekend on Martha’s Vineyard. The event, for IRC, PHRF (racing spinnaker, cruising non-spinnaker) and Double-Handed sailboats, takes place this Thursday through Saturday (July 24-26), and by the looks of the entry list and schedule there will be no shortage of talent participating or fun to be had.... [more]

ISAF Youth Match Racing World Championship - Action commences July 23 by ISAF,

Two practice days are behind the competitors and racing at the 2014 ISAF Youth Match Racing World Championship is set to commence on Wednesday 23 July. Both Monday and Tuesday have been quite ideal conditions, having had nice moderate wind and sun. Only on Tuesday afternoon the wind got lighter.... [more]

International Moth Worlds - Mothballed on day 4 + Video by Mark Jardine / YachtsandYachting.com,

Tuesday was originally scheduled as a lay-day at the Moth worlds and, in the end, that's exactly what happened, via a series of postponements. Racing was originally scheduled to start at 10am, then midday, then 1pm and finally 4pm. The abandonment flag was finally raised at 15:40 as only five knots was being registered in the bay from a wide range of directions.... [more]

Spirits high as Team Alvimedica completes Transatlantic crossing by Stefano Blin,

Skipper Charlie Enright believes valuable lessons have been learned after Team Alvimedica successfully completed a second Transatlantic crossing as part of their preparations for the 2014-15 Volvo Ocean Race. The US/Turkey entry arrived in the southern England port of Southampton on Saturday (July 19), nine days after leaving Rhode Island.... [more]