I thought tornados rated F1 to F5 ?????????????

is this another Imperial vs Metric type battle?

Keith Wassell wrote:
I thought tornados rated F1 to F5 ?????????????

is this another Imperial vs Metric type battle?

http://www.torro.org.uk/TORRO/severeweather/tscale.php

Keith Wassell wrote:
I thought tornados rated F1 to F5 ?????????????
is this another Imperial vs Metric type battle?

T comes from the Latin "tinius" which means "mini".

*ducks*

Richard

cupra wrote:
Keith Wassell wrote:
I thought tornados rated F1 to F5 ?????????????

is this another Imperial vs Metric type battle?

http://www.torro.org.uk/TORRO/severeweather/tscale.php


Ta for that !.... most informative.... where did last years brum
tornado clock in on that scale?

Keith Wassell wrote:
cupra wrote:
Keith Wassell wrote:
I thought tornados rated F1 to F5 ?????????????

is this another Imperial vs Metric type battle?
http://www.torro.org.uk/TORRO/severeweather/tscale.php


Ta for that !.... most informative.... where did last years brum
tornado clock in on that scale?

That was a T4-5 ISTR - and was a tornado spawned by a thunderstorm which
had supercell characteristics which the London one wasn't (updraught
tightening in a squall - see Will Hand's piece in the tornado - nw
london thread).

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

Hi Les

Les Crossan wrote:
Keith Wassell wrote:
cupra wrote:
Keith Wassell wrote:
I thought tornados rated F1 to F5 ?????????????

is this another Imperial vs Metric type battle?
http://www.torro.org.uk/TORRO/severeweather/tscale.php


Ta for that !.... most informative.... where did last years brum
tornado clock in on that scale?

That was a T4-5 ISTR - and was a tornado spawned by a thunderstorm which
had supercell characteristics which the London one wasn't (updraught
tightening in a squall - see Will Hand's piece in the tornado - nw
london thread).

I read that, and it agrees with what I saw, only thankfully the
'rollng' bit was well high up when it crossed us, I quote from a
yesterday post:-

Clive wrote:
Hello, the weather in Dartford at 11 Am was a mixture of thunder, hail and
followed by a heavy downpour.


Indeed, I live up high near Death Valley hospital, and it was
impressive over london when the tornado hit - Blacker than the ace of
spades!! . I had a look out the windows, and the front of the system as

it hit us had lots of greenish grey cloud ' rolling' along, I thought
it looked ominous at the time..... only counted three flashes of
lightning during the whole event . Before the rain started could hear a

deep rumbling/roar sound i've not hear before, wasn't a plane
though............. as we are 25miles from the event don't know if it
was related.. be interested to know from any stormchasegeeks if thats
normal!. Rain p'eed down followed by a brief hail event, nothing big,
2-3mm diameter stuff. Whole thing was past in 15 mins