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Mandurah wind chart sucks something cruel !!!

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Created by sandgroper > 9 months ago, 2 Mar 2008
sandgroper
WA, 368 posts
2 Mar 2008 9:44PM
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Where the hell does this data come from - its bollocks!

It was howling down here today pumping 25-30 knots and Seabreeze didnt even show a single green arrow !!! WTF???

Its morally WRONG!

(Then again - who wants everyman and his dog down here anyhow ....
OK, Ok, just forget said anything... )

nebbian
WA, 6277 posts
3 Mar 2008 12:14AM
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sandgroper said...
It was howling down here today pumping 25-30 knots and Seabreeze didnt even show a single green arrow !!! WTF???


Bwa ha ha ha ha

Kiter knots maybe

T'was only 20 knots max at Avalon...

Charl dv
WA, 2485 posts
3 Mar 2008 12:15AM
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i was at safety bay today and i can say it wasnt that windy.. like 22 - 25 maybe.. def not 25 plus

elmo
WA, 8869 posts
3 Mar 2008 12:20AM
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The wind was very disappointing today down in Manduragh

The weather readings are taken from a channel marker outside the river mouth down by the Mandurah Marina.

It's a BOM station, It's hardly ever accurate so don't blame Loz

waveslave
WA, 4263 posts
3 Mar 2008 10:49AM
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nebbian said...

sandgroper said...
It was howling down here today pumping 25-30 knots and Seabreeze didnt even show a single green arrow !!! WTF???

---------------------------------------------------------------------
Bwa ha ha ha ha

Kiter knots maybe

T'was only 20 knots max at Avalon...



lol.
You poleys have been driving with the handbrake on for years.
Yeah, it was 15 knots in the deadmeat launch-zone.....
and 15 knots on the inside flats.....
but once I hit the reefline, the wind cooked.

If poleys could only elevate their sails up 20 metres or so, then they'd feel the juice.
*Maybe longer masts.
Surface friction really affects windspeed.

sandgroper
WA, 368 posts
22 Mar 2008 10:29AM
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Ok Here's the problem....




From the location of these stations its seems likely that:

Melville Waters readings will be spot on for Crawley. It will be too optimisic for Melville Beach during Southerly winds, but is more accurate as the wind swings West, and will be accurate for W to WSW

Mandurah readings will be too pesimistic for Avalon and the Estuary during anything that doesnt have some Northerly component (just about 99% of the time) but will be accurate if the wind swings North. In particular, for Southerlies and Easterlies, Mandurah readings could easily be pesimistic by 10 knots or more.

Choady
NSW, 72 posts
22 Mar 2008 9:12PM
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Hey Laurie - any chance of posting up maps like this with the locations of other wind stations that the seabreeze site uses around the country? Maybe as a clickable link from each states page under the forecast, synoptic chart links etc?

I find a similar thing - come home after winds real average only to see 18-22kts + on the seabreeze site when I get home !! Perhaps knowing the location of the station would let dudes put in 'fudge factors' to allow for geographic location.



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"Mandurah wind chart sucks something cruel !!!" started by sandgroper