Robert Wilson wrote:
Or indeed a Femto or Atto one.

cupra wrote:

Jonathan Stott wrote:

cupra 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.

arrrgghh! the 'm' word!

Better than a nanotornado I guess


or a pico one!


An Atto-tornado, is me turning around while farting ! ;-)

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.

Those are remarkable figures! I would imagine others on the ng will be
interested in this one. Any chance of a look at the data online?

BTW I fear there could be more interest in your adjective "mini" than
the actual event, sadly.

Ken
Copley, nr Barnard Castle, Teesdale, County Durham
http://copley.mysite.orange.co.uk

I must say I was far more impressed with the stats, if correct, than the
semantics.

brian
aberfeldy



Ken Cook 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.

Those are remarkable figures! I would imagine others on the ng will be
interested in this one. Any chance of a look at the data online?

BTW I fear there could be more interest in your adjective "mini" than
the actual event, sadly.

Ken
Copley, nr Barnard Castle, Teesdale, County Durham
http://copley.mysite.orange.co.uk

Brian Blair wrote:
I must say I was far more impressed with the stats, if correct, than
the semantics.

brian
aberfeldy


Therein lies the problem - the use of the word 'mini' doesn't relate to
anything quantifiable. The 'public' would probably give a dozen different
interpretations of a 'mini' tornado.....

ps - my original reply to the OP was tongue in cheek and not intended to
belittle his observations.

cupra wrote:

Brian Blair wrote:
I must say I was far more impressed with the stats, if correct, than
the semantics.

brian
aberfeldy


Therein lies the problem - the use of the word 'mini' doesn't relate to
anything quantifiable. The 'public' would probably give a dozen different
interpretations of a 'mini' tornado.....


On Radio 5 Breakfast programme this morning, they had someone on who'd
experienced the tornado. He said the wind had started NE and then switched
to SW. He went outside and saw the funnel cloud moving away and
dissipating. He mentioned the Fujita scale and said this was an F1 tornado.
He also pointed out how common tornadoes are in the UK compared with the
US.

I can't guarantee I've remembered what he said correctly, or who he was, as
I hadn't been paying much attention at the start but I think he was a
teacher.

--
Graham Davis
Bracknell

Graham P Davis wrote:

snips

On Radio 5 Breakfast programme this morning, they had someone on who'd
experienced the tornado. He said the wind had started NE and then switched
to SW.
--
Graham Davis
Bracknell

Hi, Graham,

The wind directions you mention are similar to the Copley event as I
reported yesterday. The wind direction at 2000ft remained NE'ly even
though there was a F5 W'ly blowing at the surface.

Ken
Copley, nr Barnard castle, Teesdale, County Durham

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.

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

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