Select Committee on Environment, Food and Rural Affairs Minutes of Evidence


Annex A

Table 1

COMPARISON OF WETTEST MAY-JULY COMBINED


Area (record length back to)
May-July 2007 precipitation (mm)
May-July
71-00 Average (mm)
May-July 2007
anomaly
Wettest May-July
in series
Additional Information

England & Wales (1766)
414.1
186.3
222 %
New record-2007
Previous wettest May/Jul was 349.1 mm in 1789.
Wettest 3 month period in the series is Oct/Dec 2000 with 512.3 mm.
Central England (1873)
364.2
153.9
237 %
New record-2007
Previous wettest May/Jul was 296.9 mm in 1879.
Also the wettest 3 month period in the series.
SW England & S Wales (1873)
422.1
178.3
237 %
New record-2007
Previous wettest May/Jul was 345.1 mm in 1879.
Wettest 3 month period in the series is Nov 1929/Jan 1930 with 672.7 mm.
NE England (1873)
379.2
170.2
223 %
New record-2007
Previous wettest May/Jul was 307.5 mm in 1879.
Wettest 3 month period in the series is Sep/Nov 2000 with 462.5 mm.
SE England (1873)
314.7
153.4
205 %
New record-2007
Previous wettest May/Jul was 292.5 mm in 1903.
Wettest 3 month period in the series is Oct/Dec 2000 with 442.6mm.
NW England & N Wales (1873)
386.8
197.6
196 %
New record-2007
Previous wettest May/Jul was 353.6 mm in 1920.
Wettest 3 month period in the series is Oct/Dec 2000 with 553.3 mm.


  A1.  During June, In excess of 150 mm of rain fell over most of Wales, the Midlands, northern England, Northern Ireland and parts of Scotland, with over 250 mm locally. This represents over 3 times the normal June rainfall over most of Yorkshire, Lincolnshire and the West Midlands and about 4 times the June average at places in the North York Moors and south Pennines. High anomalies were also recorded elsewhere, such as parts of Northern Ireland. In July, in excess of 150 mm of rain fell over most of Wales, the western half of England and parts of the Scottish Highlands, with over 200 mm in places. This represents over twice the normal July rainfall over large areas of England and Wales, over 3 times in most of the south Midlands and SE Wales and over 4 times the July average locally in the south Midlands.

Table 2

EXAMPLES OF WETTEST LOCATIONS IN THE UK DURING JUNE 2007


Weather Station
June rainfall (mm)
% of 1971-00 average

Emley Moor, W. Yorks
294
435
Bingley, W. Yorks
283
401
Fylingdales, N. Yorks
269
406


Table 3:

EXAMPLES OF WETTEST LOCATIONS IN THE UK DURING JULY 2007


Weather Station
July rainfall (mm)
% of 1971-00 average

Pershore College, Worcs
252
588
Great Malvern, Worcs
189
448
Little Rissington, Glos
189
378
Brize Norton, Oxon
178
438


  A2.  For the counties of Gloucestershire, Herefordshire, Oxfordshire, Radnorshire, Shropshire, Worcestershire and Warwickshire the July areal rainfalls were the highest for July in series starting in 1914 (Table 4). The July 2007 values for Warwickshire and Worcestershire were also the highest for any month and that for Gloucestershire was the second highest for any month.

Table 4:

JULY 2007 AREAL RAINFALLS FOR COUNTIES EXPERIENCING THEIR WETTEST JULY IN AREAL SERIES STARTING 1914


County
July rainfall (mm)
% of 1971-00 average

Gloucestershire
197
411
Herefordshire
189
427
Oxfordshire
150
339
Radnorshire
222
363
Shropshire
165
330
Worcestershire
208
453
Warwickshire
201
417





 
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