In uk.sci.weather on Sun, 15 Oct 2006, Ian Currie
wrote :

The 17:00 rainfall radar
http://www.met-office.gov.uk/weather...dar/index.html showed some
bright echos moving across Penzance, but so far (at 17:35) only around
1.5mm of rain has fallen.

There was some heavy rain at around that time in St Ives too, but of
course I had no way of measuring totals. No thunder though.
--
Paul,
I think quite a few observers over the years can make a fairly accurate
assessment of the amount of rain from various pointers in the vicinity. For
instance 1 or 2mm of rain does not usually wet the ground under trees and it
takes at least 5mm or so to drip through.

I can indeed make that sort of estimate here in Cheltenham, but I'm not
familiar enough with how St Ives looks with various amounts of rain to
make an assessment. Graham would be the one to ask about that.

Or how much rain it takes to wet
the soil or make the gutters flow? I would make a temporary gauge from old
bottles or tin cans when on holiday when I was a lad etc.

I'd have had nowhere to place one - only a very sheltered tiny inner
courtyard.
--
Paul Hyett, Cheltenham (change 'invalid83261' to 'blueyonder' to email me)