On Tuesday, April 21, 2015 at 7:29:54 PM UTC+1, Nick Gardner wrote:
On 21/04/2015 17:10, Graham Easterling wrote:
Some notably low dewpoints in Cornwall.

Camborne Air Temp 16C, dew point -1C
Cardinham 17C & 0C respectively.

With unbroken sunshine and a generally F4 E wind, some very drying conditions.

Air was nowhere near as dry here Graham.

Lowest DO was 2.0C at 03:35 (RH 91%).

Highest DP was this afternoon with 9.5C and an air temperature of 19.9C
(RH 51%).

Maximum temperature was 20.5C at 15:10 and unbroken sunshine all day.

A very pleasant, near-calm evening and it doesn't seem to be going off
cool like previous ones.

(19:30), 15.0C, RH 56%, DP 6.3C, 1031 hPa, Wind 1 mph S.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalley.co.uk

Relative humidity was down to 26% at Camborne at noon, Cardinham reported 28% at 14:00, so similar across Cornwall.

Even at Sevestones buoy, well offshore in the open Atlantic, the dew point dropped to 3C @ 08:00 today, when the SST was between 10 & 10.5C and the air temperature was 11.5C.

Graham