Reports for April 2011 for the Copley sites. (Averages refer to
1971-2000)

Warm, dry and sunny. Along with 2007 this has been the warmest April
on my 40 year record and the driest and sunniest since 1990.

Copley Lead Mill 218metres asl
Temperature °C
Mean maximum 15.3 High 21.1 on 8th Low 9.2 on 13th
Mean minimum 4.1 Low -3.1 on 28th High 9.9 on 2nd
Mean screen 9.7
Air frost 3
Days snow lying 50% 09Z, 0
Max depth 09Z 0cm on 0th

Copley Met O site 253metres asl
Temperature °C
Mean maximum 14.6(+4.8) High 19.8 on 8th Low 8.8 on 13th
Mean minimum 4.8 (+2.7) Low -1.4 on 28th High 10.0 on 2nd
Mean screen 9.7 (+3.8)
Mean AWS(Davis) 9.5
Mean grass minimum -1.3 Low -8.9 on 28th
Air frost 2
Ground frost 15

Rainfall mm
Total 11.2 (19%) High 4.4 on 4th
Total AWS(Davis) 14.2mm
Rain days 6
Wet days 3
Hail 0
Thunder 1

Snow cm
Days falling 0
Days lying 50% 09Z, 0
Fresh falls 09Z 0cm
Max depth 09Z 0cm on 00th

Sunshine hr (R&D recorder)
Total 229.7 (151%) High 14.3 on 30th
Days no sun 0
Fog 09Z, 0

Wind mph (Davis recorder)
Mean SW 9.0 (-1.4) High gust 51 on 6th
Gale days 1


Ken
Copley, Teesdale
http://copley.website.orange.co.uk/