2011 - rainfall accumulations for the year
#62
Posted 26 September 2011 - 10:28
This post has been edited by Tim Prosser: 26 September 2011 - 10:29
#65
Posted 04 October 2011 - 13:17
#67
Posted 04 October 2011 - 14:18
#68
Posted 04 October 2011 - 14:20
The graph shows 2005 the driest year i have had and 2008 the wettest, for comparisons with this year and the mean average for nearby Plymouth 1971-1990
uploads/monthly_10_2011/post-30656-0-79354100-1317738016_thumb.gifuploads/monthly_10_2011/post-30656-0-86144500-1317737995_thumb.gif
#69
Posted 04 October 2011 - 15:42
Edit: The 'rolling Rainfall' shows better the present dryness compared to the long term trends.
This post has been edited by Foxy2: 04 October 2011 - 16:02
#70
Posted 04 October 2011 - 16:46
Nothing so far in Oct.
#71
Posted 04 October 2011 - 17:42
Foxy2, on 04 October 2011 - 15:42, said:
Edit: The 'rolling Rainfall' shows better the present dryness compared to the long term trends.
Oddly, and this is part of the Dartmoor rain shadow dryness this year, only 535mm here - and I suspect we're just within the in the 1200mm isohyet. There are place around Exeter and Newton Abbot much below that (an AWS in Kingsteignton showing 371mm
Indeed, this year is, I think, remarkable for it's rainfall variability - perhaps due to it's lack of westerliness and of rain bearing depressions sweeping across the country.
Edit: that rolling figure of yours in interesting. We were only saying today it's still potentially '76ish' around here.
This post has been edited by Peter H: 04 October 2011 - 17:44
#72
Posted 04 October 2011 - 18:33
Peter H, on 04 October 2011 - 17:42, said:
Indeed, this year is, I think, remarkable for it's rainfall variability - perhaps due to it's lack of westerliness and of rain bearing depressions sweeping across the country.
Edit: that rolling figure of yours in interesting. We were only saying today it's still potentially '76ish' around here.
I tend to agree about the dryness. I for one will be hoping for a wet Autumn and Winter. It would be interesting to compare that plot with some other parameters such as westerliness, +ve or -ve NAO etc!
#73
Posted 05 October 2011 - 08:22
January (93.7mm) and June (97.6mm) had about twice the normal, but March (10.9mm), April (3.7mm), May (11.4mm) and Sept (13.4mm) were all very dry.
#74
Posted 05 October 2011 - 16:45
For March to August 2011, Scotland recorded its 2nd wettest ever such period (the wettest being in 2009) but that England and Wales only recorded 80% of average. For the midlands, the combined spring and summer rainfall was the 2nd lowest on record, and the deficiency in the 21 months (from December 2009 to August 2011) was exceeded only by the extreme droughts of 1933/1934 and 1975/1976.
http://www.ceh.ac.uk...f/HS_201105.pdf shows similar figures for May and spring 2011, showing that Scotland, with 190 mm (260%) had its wettest May on record, but that England and Wales had its joint driest spring, along with 1990, and that the Cambridge area had its driest spring on record, half the amount of the previous lowest, in a record going back to 1848. Southern (41%) and Anglian region (45%) both only averaged 21 mm in May 2011, while Highland regon averaged 252 mm (322% of average). For spring as a whole, Anglian averaged 31 mm (23%), and Southern averaged 43 mm (27%, both these having a frequency of 1 in more than 100 years and Highland 486 mm (146%), a frequency of about 1 in 30 to 40 years.
Someone mentioned a link to an an on-line article by Philip Eden in a thread on UK Weatherworld recently, in which he mentioned a low rainfall total somewhere in England in September 2011; I cant remember the amount or place and unfortunately cant find the post easily in which it was mentioned, though think it was in the last 2 or 3 days. I have tried searching for posts mentioning Philip Eden in the last few days and it returns about 11, but it is tedious to search these one by one. Under the old UK Weatherworld website, you could show only the posts which showed the actual words you were looking for; is there any equivalent of it under the new set-up (Computers are supposed to cut down on boring but necessary tasks)?
#75
Posted 05 October 2011 - 17:18
BUTTERFLY, on 05 October 2011 - 16:45, said:
Click on advanced (to the right of the search box) - that should help
#77
Posted 06 October 2011 - 11:29
which makes it the 3rd driest YTD since 1900
#78
Posted 06 October 2011 - 13:39
February.......171.3mm (248%)
March...............22.5mm (27%)
April.................31.8mm (55%)
May................74.8mm (134%)
June.................67.3mm (87%)
July................96.2mm (135%)
August..........118.6mm (133%)
September.....141.7mm (152%)
Year after 9 months - 787.4mm (114%)
#79
Posted 06 October 2011 - 16:38
(1) Cranwell recorded 9 mm and Moulton Park in Northamptonshire 11 mm, while Cluaine Inn in Wester Ross reached 533 mm (including 56 mm on 21st) and Tyndrum in Sirlingshire 414 mm; percentages of monthly rainfall varied from below 30% in the Midlands, East Angia and Kent to around 200% in the Western Highlands of Scotland. Capel Curig recorded 111 mm in the 48 hours ending 2100 hours on 6th, so is extremely likely to have recorded more than 56 mm in 24 hours; Tyndrum also recorded 131 mm and Cluanie Inn 88 mm in the 48 hours ending 0900 hours on 13th. There were only 3 days with 0.1 mm or less at Stornoway in the Hedbrides compared with 21 such days at Wittering in Cambrideshire.
(2) Perhaps surprisingly, the highest minimum was not in the SE during the last week, but 18.0 deg. C. at Crosby on Merseyside on 10th.
(3) Sunshine varied from 41 hours at Kinlochewe in Wester Ross and 72 hours at Eskdalemuir in Dumfries & Galloway to 180 hours at Jersey Airport and 181 hours at Manston in Kent, and percentages from below 80% in Western Scotland, Northern Ireland, and North Wales to around 120% in Eastern England.
It is interesting that the wettest ever September recorded at one of the stations in the table (Wattisham) was 119 mm in 1968, and that it was followed by the driest, 1969, with only 1 mm. Reminiscent of August 2003 and 2004, when Kilkenny in SE Ireland recorded 1.1 mm (see http://www.met.ie/cl...etins/aug03.pdf) and over 100 times that amount in August 2004 (128.4 mm - see http://www.met.ie/cl...etins/aug04.pdf). However as one station in Co. Laois recorded no rainfall in August 2003, the ratio of rainfall in August 2004 to that of August 2003 must have been, by definition, infinite. (This woulso also have happened with respect to August 1801, 1947, 1976 and 1995, all of which were rainless at at least 1 site in Ireland, and were followed by normal to wettish Augusts at least in the last 3 cases (I have no information n August in 1802).
#80
Posted 07 October 2011 - 09:46
------------------
JAN: = 42.5mm
FEB: = 81.3mm
MAR: = 7.2 mm
APR: = 7.3mm
MAY: = 28.5mm
JUN:= 54.5mm
JUL:= 43.6mm
AUG:= 70.4mm
SEP:= 27.4mm
Total for year so far: 362.7mm












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