Thu 04 Nov, 2010 9:24 pm
Thu 04 Nov, 2010 9:50 pm
enduro wrote:when is an optimum time to go?
Fri 05 Nov, 2010 7:43 pm
Azza wrote:April and May you often get some really nice walking days where its not too hot or too cold, the only thing is the daylight hours are getting shorter.
Sat 06 Nov, 2010 7:21 am
It's a really interesting article if the weather interests you.It reaches peak intensity and moves closer to the coast in autumn and spring, intensifying the pressure gradient and strengthening the westerly winds to its north. Hence strong winds are associated with the equinoxes (misleadingly called equinoctial gales – great variations in wind speed can happen at any location within these seasons as well as from year to year).
Seasonal cycle of wind
The seasonal cycle of pressure over the Southern Ocean results in increases and decreases in the pressure gradient and the strength and latitudinal extent of the westerly winds that affect Tasmania. The westerlies are strongest in spring and autumn. In summer, the sub-tropical ridge reaches its maximum southern extent and the westerlies are not so dominant, although cold fronts regularly cross Tasmania between individual high pressure cells. These fronts are preceded by warm north to northwesterly winds and followed by cooler southwest or southerly winds. In winter, there is a noticeable ‘split’ in the westerly current over the Tasman Sea and New Zealand and the mean speed of the westerly winds in this region falls to a minimum.
Sat 06 Nov, 2010 9:34 am
Sat 06 Nov, 2010 10:43 am
Tue 09 Nov, 2010 7:14 pm
enduro wrote:...alpine walks in Western Australia...
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