On Wednesday, 25 November 2015 11:21:46 UTC, wrote:
2612 mm??? Is that all? Crikey! There are many places in the western highlands, Snowdonia and the Lake District with double that amount!

How come these places never feature in the " highest daily rainfall" stakes?

Nigel,
Many of these sites are possibly not on the MetO AWS system and report to a different department.
Our Copley MetO climat. site, for instance, reports daily to the MetO climat. section. There is an Environment Agency rain gauge here that downloads constantly to the EA and can be shared by MetO, but will never appear in the daily summaries.
The MetO real-time summaries are from just a small part of the observing network.
Ken
Copley
Teesdale