Thanks for all that Chris, though the total here at my site on the NW
side of Penzance was 60mm overnight, though it was much less just to
the south over Newlyn. We've subsequently had more rain today, so the
total for the 24 hours to 21:00 this evening at my site in Penzance
looks like being around 75mm.

I think the press reports saying St Ives had 50% of their months
rainfall overnight are using the far, far lower Camborne figure.
Camborne was virtually unaffected by the storm in question, having
much of it's rain during heavy bursts of rain during the evening of
24th.

Apparently the £10m St Ives flood defence work was did 'just what it
was intended to do' http://news.bbc.co.uk/1/hi/england/cornwall/8018312.stm
I am sure the many businesses flooded, and the people evacuated from
hotels in the early hours will be reassured by that. Quite frankly,
the effect was much as the 2002 flood (when I recorded 84mm in
Penzance)

On 25 Apr, 18:59, "CHRIS KIDD" wrote:
Looking at the radar rainfall totals (Friday 12Z to Saturday 12Z) in a bit
more detail:

The area west of St Ives had typically ~170mm with a maximum of 193mm ~4km
SW of the town. Zennor had 136mm. However, very sharp E-W gradient with much
lower totals to the East of St Ives - typically no more the 25mm. Similarly
with Penzence - the centre of which the radar suggests had ~25mm, but a few
km to the west in the 80-100mm range.

The highest totals were just offshore to the NW of the coastline with up to
200mm - however, maybe brightband played a part here - this region is ~37km
from the Predannack and assuming a maximum height of the freezing level to
be ~2km puts it at the 3 degree beam elevation...

Chris