A few mates and I headed up there today we were actually conveying on the matter on the drive homein the car. It was saying 30 knots I was on my 10 and if didn't fell like 30 the bar did not have grunt in the upper 1/3. Some dude was on an 11m shooting to the moon. So I would think maybe the meter is on or near that Island to the north ? Further out with no wind restrictions ?

August does the same it's up on the light house at the point.

The Safey Bay meter is known to always over read by 5+ Knots. Not sure why but there must be a technical explanation to this. Use the Garden Island meter for a more accurate reading

Christian

Hey guys, the meter is on top of my place across the road from the jetty (blue house). Since we went up a storey the readings have jumped up 5kn on a SW. I think it is due to the wind gaining velocity as it goes over the house. Have been thinking about a higher mast to get cleaner air. Or alternatively just recharacterising the meter readings. If anyone has an old windsurf mast and some excess line/wire rope drop it by.

SimonM said..
Hey guys, the meter is on top of my place across the road from the jetty (blue house). Since we went up a storey the readings have jumped up 5kn on a SW. I think it is due to the wind gaining velocity as it goes over the house. Have been thinking about a higher mast to get cleaner air. Or alternatively just recharacterising the meter readings. If anyone has an old windsurf mast and some excess line/wire rope drop it by.

The BoM use a standard height of 10m for their observations. Perhaps you could measure how high your anemometer is from ground level so a conversion to reduce the reading to roughly a 10m height can be made before it gets into seabreeze.

A good conversion to use is:
U = Ur*(10/Zr)^(1/7),
U = wind speed at 10m, Ur = your anenomometer wind speed, Zr = your anemometer height.

more info here:
en.wikipedia.org/wiki/Wind_profile_power_law

Thanks for the link mate. I've fixed up the calibration using a bunch of data points. Looked good yesterday and today.. what do u think? Will have to see more wind directions to complete the job.

Yeah sweet work dude, your number one

What'd u think of results today? First real strong day since adjustments. Didn't get a chance to get out.

My gust is based on a 20 sec rolling average of speed and direction. Then the highest occurrence of that in the 5 minute reporting window is sent as the gust.