I have recently installed a Davis Vantage Pro2 in the harbour here in Lyme Regis. It has mostly worked very well but twice now the rain gauge has suddenly gone wild and I have been trying to find out what could be causing it. The symtoms are that suddenly the rainfall starts incrementing constantly (see chart below) at about 7"/hr. The weather station connects to the Vantage Pro console via a wireless link. The chart is actually from Weather Display live but I have checked back at the console and confirmed the same rainfall has been recorded there. After a while it suddenly goes back to normal. I will be taking a look at the rain bucket in the next few days but it's not easy to get at (mounted on the harbour master's office roof).
So I wondered if anyone else had ever experienced this before or had any ideas what I should look out for.
Of course when it goes wrong all the cumulative yearly, monthly, daily figures become skewed and it is a real pain getting them all corrected.
The weather station can be viewd at www.lymeregis.org/webcams/live-weather-station/ (there is a non-flash version for iPad etc.).
Many thanks