"Will Hand" wrote in message
...
Inversion at 2500 feet meant air was trapped going over Dartmoor, hence a
very
windy day.
Lee wave activity too leading to strong lee gustiness in Exeter.

Max wind was at 1150 with a measured 10 minute mean speed at 3m agl of SW
18
knots gust 43 knots.
This converts to SW 31 knots gust 56 knots (64 mph) at 10m agl.
That fits in nicely with surrounding data and a force 7 at my house
(sheltered
from SW) was consistent with other evidence. Full blown gale/severe gale
on open
moor earlier in morning with several small trees and branches snapped off
in the
part of Haytor adjacent to open exposed moorland.

This is my highest recorded gust at this station since I started wind
observations in Jan 2005.

Will.
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A COL BH site in East Dartmoor at Haytor, Devon 310m asl (1017 feet).

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www:
http://www.lyneside.demon.co.uk/Hayt...antage_Pro.htm

DISCLAIMER - All views and opinions expressed by myself are personal
and do not necessarily represent those of my employer.
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Hi Will, I know you bin anything I write, but this is a serious question,
what causes gustiness, why don't the wind just blow, without all the stop
go.
Joe