The Weatherzone forum has now closed and is in read-only mode until the 1st of November when it will close permanently. We would like to thank everyone who has contributed over the past 18 years.

If you would like to continue the discussion you can follow us on Facebook and Twitter or participate in discussions at AusWeather or forums.

Topic Options
#246771 - 01/02/2009 20:01 Recent King Tide question
DamianTheOmen Offline

Registered: 31/12/2006
Posts: 218
Loc: East Brighton
On Monday the 12th of jan 2009 we had a 2m king tide,
a number of years ago I sat as a youngster on a beach in port phillip bay melbourne waiting for the cool change and accompaying SW winds so that I could surf. It was hot and there was no sign of the change coming but suddlenly swell popped up out of no where and there was small 1.5-2ft waves breaking for a 30min period - perfectly with an "offshore" wind, not the normal SW wind.

My question is this - when there is a substantial difference between high and low tide ie- king tide would this produce the waves that I surfed that day and how would one be able to predict this

I would really appreciate some imput on this as I struggle to get down the coast now with kids and work commitments but can sneak out for a quick baywave without much drama

cheers in advance


#246772 - 09/02/2009 21:25 Re: Recent King Tide question
ozthunder Offline
Weatherzone Addict

Registered: 23/09/2001
Posts: 3346
Loc: Mt Warrigal, NSW, Australia
My best guess is that a SW wind was blowing at the other end of the bay.

If wind waves are running against the tidal direction the resistance will make them higher.

I once surfed a local beach here in Shellharbour, it was a lovely 3ft and offshore, and just like you experienced it jumped, in my case to a consistent 4-5ft set after set. 30 mins later a howling SE change came through.

I also surfed a beach at Yamba back in 1970 something and the surf over 3 hours jumped from 4-5ft to 6-8ft then finally to big, but the culprit was an intense ECL spinning up offshore, still I'm 52 and have not seen surf build so quick since.
Michael Thompson

#246773 - 02/09/2009 22:34 Re: Recent King Tide question
SBT Offline
Meteorological Motor Mouth

Registered: 07/02/2007
Posts: 14286
Loc: Townsville Dry Tropics
From out of the depths of my old surfing memories of 30 years ago we used to say that 40 minutes either side of a major tide change can have the same effect. Up here where we only get surf in a cat 2 or higher cyclone you can still see the change when out fishing on the reef.
785mm Jan
799mm Feb
130 March
2019 Total 1714mm
2018 Total 822mm


Who's Online
0 registered (), 40 Guests and 2 Spiders online.
Key: Admin, Global Mod, Mod
Today's Birthdays
Billies ride, Jayson Black, NeedMoreLightning, slipperyfish, supercellwish1
Forum Stats
29947 Members
32 Forums
24194 Topics
1529247 Posts

Max Online: 2985 @ 26/01/2019 12:05
Satellite Image