Understanding sea breezes

> 10 years ago
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Harrow
Harrow
NSW
4521 posts
NSW, 4521 posts
13 Oct 2006 1:53pm
I don't get why some days you get a howling NE'er on the bay and other days you get stuff all? Often a similar synoptic, and a bloody hot day, but the outcome can vary from a 30 knot howler to maybe only 10 knots. Can someone please enlighten me.
mkseven
mkseven
QLD
2315 posts
QLD, 2315 posts
13 Oct 2006 8:49pm
You dont happen to work for the BOM do you harrow?
Gestalt
Gestalt
QLD
14968 posts
QLD, 14968 posts
13 Oct 2006 10:26pm
hi harrow,

i have noticed with seabreezes, the earlier in the day the stronger they get.

up here the seabreeze starts to drop off around 5pm and then picks up again towards dark.

don't know why?
matcham
matcham
NSW
49 posts
NSW, 49 posts
14 Oct 2006 8:21am
mkseven that's the funniest comment I've heard in ages.
Harrow
Harrow
NSW
4521 posts
NSW, 4521 posts
14 Oct 2006 1:29pm
Jethrow, I always knew about the thermal stuff, but always wondered why it was NE in Sydney instead of just E. (Or SW in Perth instead of just W). But Coriolis forces explains it all. Thanks for the link!

mkseven, that was hilarious. All the more funny because I had to think about it for a moment or two.
Jethrow
Jethrow
NSW
1282 posts
NSW, 1282 posts
15 Oct 2006 11:08am
Hi Harrow

I did a weather course one year for my yachting and the dude said that if you were sailing in a strange place and wanted to know where the sea breese would come from, stand facing offshore with your arms pointing along the average coastline direction then look slightly to your left and this is where the breeze will come from. It seems to work in the east and west but I don't know about other places
mkseven
mkseven
QLD
2315 posts
QLD, 2315 posts
15 Oct 2006 6:26pm
Sounds about right provided you are in a spot with clean wind (away from headlands etc).

Sorry Harrow had to put it in, I studied meteorology at uni and i'm almost sure that I know less about it now than I did before (and no it's not cause I did badly- quite the opposite)- with over 100 years of observations and technology it still seems like quite a imprecise science
twitchie
twitchie
WA
18 posts
WA, 18 posts
26 Oct 2006 9:25pm
If you want to understand wind get a copy of the High Performance Sailing book by frank Bethwaite. you will struggle as he goes very in depth on wind but you will pick up some thing from it, about how win d works.

greenleader
greenleader
QLD
5283 posts
QLD, 5283 posts
26 Oct 2006 11:34pm
just trust your instincts young skywalker.
Pugwash
Pugwash
WA
7733 posts
WA, 7733 posts
26 Oct 2006 10:07pm
...wind comes from beans Baked beans

Made some good guesses this week... Decided not to sail yesterday after work - turned out to be no wind Decided to sail today and got about 2.5 hrs in after work
sonic
sonic
QLD
756 posts
QLD, 756 posts
27 Oct 2006 7:53am
Spend a few hours with the chair police and all the facts and possibilities will be covered,cloud,tide,temp,history....apparently it was always windy 30 years ago.......
Very smart comment about BOM.
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