"Norman Lynagh" wrote in
message ...
In message , Philip Eden wrote:

You should also bear in mind that you may have had 0.2mm sitting
in bucket (topped up with the odd dribble of dew or fog-drip)
since the last time it rained. I occasionally notice that a heavy
dew will tip the bucket at the AWS at Hampstead for this very
reason ... one of the many small disadvantages of AWSs.

There was a genuine 0.3 mm here yesterday evening, both in the manual
gauge and in the Davis VP. I had checked the manual gauge yesterday
morning. The drizzle was quite wetting for at least three hours. Roads
were wet, not damp.

Wasn't trying to suggest there wasn't some real drizzle ... merely
to point out this particular mini-flaw in tipping-bucket gauges.

Philip Eden