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Weather forecasting

Created by snapperfish snapperfish  > 9 months ago, 23 Jan 2021
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snapperfish
snapperfish

NSW

61 posts

23 Jan 2021 11:06am
I am interested in learning how to forecast the wind myself (not just relying on my apps such as willyweather) starting with analysing the current chart of the high and low pressure cells. I have a high school geography level understanding of winds going anti-clockwise round a high, clockwise round a low etc. I am mostly interested in Botany Bay winds. When I am out on the water, I am getting better at visually forecasting by looking at the clouds etc.

Apart from the barometric pressure charts, what other charts are good to use when forecasting wind?

Chees,
snapper.
FabulousPhill
FabulousPhill

VIC

321 posts

23 Jan 2021 11:31am
"Instant Weather Forecasting" book or [pdf] by Alan Watts. Apparently free online if you register- several sites.
I like this guys books because they have photos and seemed clear, but I haven't read it for years now.
There are a few similar books in BoatBooks booshop.
r13
r13

r13

NSW

1714 posts

23 Jan 2021 11:42am
Great question.

I did a google and just found this which expect would answer the question...............got a headache already..............

journals.ametsoc.org/view/journals/wefo/19/2/1520-0434_2004_019_0181_wfftse_2_0_co_2.xml

Being far more open Botany Bay winds are normally easier to predict than the harbour but of course there are challenging days. Never trust a westerly wherever you are. Southerly busters are usually easy to predict with the cloud build up - but some occur out of a clear sky........

The land thermals have an impact on light breezes - if the land thermals don't occur as predicted then the typical east coast noreaster can become "blocked". Numerous times the forecast for nw breezes to go ne have not occurred in Botany Bay - the ne has happened offshore but doesn't get into the bay.

The marine forecasts are different to general forecasts.

www.bom.gov.au/marine/wind.shtml
snapperfish
snapperfish

NSW

61 posts

23 Jan 2021 11:51am
Very interesting, thank you all!
cheerio,
snapper :)
SandS
SandS

VIC

5904 posts

23 Jan 2021 10:23pm
Select to expand quote
snapperfish said..
I am interested in learning how to forecast the wind myself (not just relying on my apps such as willyweather) starting with analysing the current chart of the high and low pressure cells. I have a high school geography level understanding of winds going anti-clockwise round a high, clockwise round a low etc. I am mostly interested in Botany Bay winds. When I am out on the water, I am getting better at visually forecasting by looking at the clouds etc.

Apart from the barometric pressure charts, what other charts are good to use when forecasting wind?

Chees,
snapper.


practice reading the four day pressure maps on BOM . It'll do you good
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