On Aug 13, 8:19*am, Pete L wrote:
Last night on a quiz show (Eggheads) the question was asked, 'What is
an anvil crawler?

During my 30 years plus working for the Met Office, I have never heard
'Anvil Crawler' before. Just reading about it now and it's an American
term to describe lightning forks travelling across the underside of
the thundercloud. Has anybody in UK ever heard this term mentioned?

I'd asked a question relating to this on the ng last week (6th August)
about a storm near me in Essex:

"It's just to the south & SW of me, Dave but I'm getting an excellent
view of the lightning - the best I've seen for a few years. Frequent
very intense CG & CC strikes and some of the "crawler variety" that
you see abroad, with a lot of branches off the main stroke, running
along the underside of the clouds, parallel to the ground. Saw
quite
a bit of it in Florida but not in UK. Any idea what causes it?"

- Tom
Blackmore SW Essex.