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Old September 21st 06, 12:24 PM posted to uk.sci.weather
Tim Prosser Tim Prosser is offline
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First recorded activity by Weather-Banter: Sep 2006
Posts: 2
Default wind during mini tornado leeds


Les Crossan wrote:
wrote:
hymie wrote:
Just accessed my weather station data ,high gust of 98mph ,ave 48mph for 5
mins in high ash ave, leeds 17 ,half mile from wigton Lane.



98 mph? That would seem a pretty decent tornado for this country.

Looking at all the pictures of all the blown down trees and lost slates
I'd say a T2-3 on the Torro Scale or an F1 in that old Fujita money
that's 73-114 mph or a 'moderate / strong' tornado.

The straight line winds were all over the place yesterday, don't know
about Leeds but here there was an south easterly at the surface, a NE
wind around 2000 feet up and all the midlevel cunimb (remnants here!)
were moving in rather briskly from the SW - with that kind of shear
about there's a pretty good chance that something will spin up.

Les

--
Les Crossan,
Wallsend, Tyne & Wear
54.95N 1.5W
Home of the Wallsend StormCam and the Backup USW FAQ -
www.uksevereweather.org.uk


I conducted a site survey for Torro, following the damage all the way
from south Leeds into Harrogate.

I'd be extremely interested in seeing the wind record and an exact
location (ie which end of the road!), if that is OK.

I'd definitely agree with the T2-3 assessment, which would agree nicely
with 98mph winds. Nearby Street Lane had a tree uprooted and several
shops smashed up.

Tim