"Hugh Newbury" wrote in message
...

They say that prevention is better than cure, but in this case I agree
with Trevor. I expect your AWS has a way of correcting readings, so you
can archive a proper value for the rainfall. You can check the AWS reading
for rainfall by running a raingauge using a funnel/bottle arrangement and
working out the value from the diameter of the funnel.

A worse aberration of the AWS is one that happens every so often when you
get a sudden downpour that overwhelms the AWS. This happened recently to
me when we had a deluge of several mm in 20 minutes. The AWS registered
zero! When I went to look at it, I found the tipping bucket was
horizontal, and the first input from the storm had stopped it tipping more
than halfway. This of course is easy to correct using your finger on the
tipping bucket, if you know what the rainfall really was!

Have a look at my website (in my sigfile) to see the comparison I've been
running between the AWS and a standard gauge for over a year now.

Hugh


I'm running two software packages for this. The Cumulus Tool Box refuses to
start correctly on this computer, for what reason I have no idea. And I
tried editing the files from Easy Weather once, with disastrous results, so
am a bit disinclined to try it again. I'm not really too fussed at the
moment anyway, since I am probably going to dump all the records to date
when I reposition everything, due to some weird and wonderful high
temperature readings I've been getting recently. Like today, a high of
+38.6C!!! (See the 'Techy Question' thread about that.)

jim, Northampton