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graphs CLIMATE-UK.COM'S REVIEW OF THE BRITISH METEOROLOGICAL SCENE
MONTHLY SUMMARY
No. 671 For NOVEMBER 2011
ABNORMALLY MILD; DRY OVER ENGLAND & WALES; DISTURBED LAST WEEK
Text Box: Winds were mainly south to southeasterly until the 22nd resulting in low rainfall in most parts of the country. The last eight days were very disturbed with frequent heavy rain and gales in northern and western regions. This was the third most 'southerly' November in 139 years of records, after 1931 and 1902. 

With a deep depression west of Ireland and high pressure over eastern Europe, a broad southerly flow covered the UK during the first four days of the month, and a complex frontal zone advanced slowly and erratically eastwards across the country. Behind this front a developing cell of high pressure moved steadily NE across Britain to Scandinavia. The 1st was a mostly dry, bright and rather warm day, but rain spread slowly from the west during the next two days and there were some heavy falls SE of a line from Yorkshire to Dorset on the 3rd, including 56mm at Alice Holt Lodge (Hants); in spite of the cloud and rain it was very mild with an overnight low of 15.1C at Shoreham (Sussex) early on the 3rd and a high of 18.0C at St James's Park (London) that afternoon. A showery day followed on the 4th, but the three following days were largely dry, somewhat colder, with plentiful sunshine in northern and western parts but extensive low cloud and hill fog in the east and south. On the 6th the sun shone for 8.7h at Aberporth (Ceredigion) - the month's highest daily total - but where skies were clear there were widespread overnight frosts, and -6.9C was reported from Carleton-in-Craven (N Yorks) early on the 7th. 

From the 8th-17th highest pressure often lay over southern Scandinavia and the Baltic, resulting in a mainly southeasterly flow over the country. On the 17th/18th active fronts affected the west and north, but a sluggish southerly flow returned for the next three days. For much of this time there was low cloud, mist and fog over a large part of the country although some areas were favoured with prolonged sunshine on several days, notably in northern and western Scotland, and western coastal counties of England and Wales; rain fell in western districts on the 9th and
Text Box: 11th otherwise there was very little precipitation throughout this period. The sun shone rather more widely between the 12th and 15th, and the weekend of the 12th-13th was notably sunny and warm with a high of 18.1C on the 13th at Otterbourne (Hants) and 18.0C at Valley (Anglesey). Rain and strong winds affected western and northern regions on the 17th/18th with 67mm in 48h at Tyndrum (Stirlingshire), but fog was slow to clear over much of eastern England on the 20th, 21st and 22nd.

From the 22nd onwards the weather was very unsettled with heavy rain falling daily in northern and western regions, often accompanied by gale-force winds. Comparatively little rain, though, fell in eastern, southern and midland counties of England. It remained generally mild for the most part, and a high of 15.9C was recorded at Fyvie (Aberdeenshire) on the 26th thanks to a fhn effect. By contrast, a brief incursion of polar air allowed the temperature to fall to -6.0C at Chesham (Bucks) early on the 28th. Largest daily rainfall totals included 78mm at Loch Shin (Sutherland) and 76mm at Cluanie Inn (Wester Ross) on the 28th, 55mm at Bishopton (Renfrewshire) on the 29th, and 70mm at Cluanie Inn on the 30th. Gusts to 65kn were recorded daily from the 24th-30th in western districts, with 77kn recorded at Fair Isle (between Orkney and Shetland) on the 27th.

Monthly mean temperature was 2 to 3 degC above the 1981-2010 average in all regions and, measured by the CET, this was the warmest November with the sole exception of 1994 in the entire 353-year long record. Rainfall ranged from twice the long-term average in the Glasgow area to less than 25 per cent in parts of the East Midlands, Lincolnshire and Yorkshire; the lowest total was 11mm at Bridlington (East Riding). Averaged over England and Wales this was the driest November since 2004 with just eleven drier in the last 100 years. It was a very sunny month in Scotland and Northern Ireland with 101h recorded at Kinloss (Moray) but it was a rather dull month in parts of the Midlands and Southeast.
                                                                                                                                             
    TEMPERATURE   SUNSHINE   RAINFALL        
                                                                                                                                     
                                                                                                                                     
                                  Highest and lowest totals             Highest and lowest totals        
                                  on record for month    
Maximum fall in 24 hrs
   (beginning 09 h)
        on record for month    
Days with snow or sleet
 
Days with fog
(Vis <220 yards at 09 h)
 
                                                                                         
     
Difference from average
   
Difference from average
 
Highest maximum
   
Lowest minimum
   
No. of days with grass
  minimum below 0C
   
Days of no sunshine
 
Maximum duration
       
First year of record
         
Days of no rainfall
 (0.1 mm or less)
         
First year of record
         
Days with thunder
     
  PLACE  
Mean Maximum
   
Mean minimum
             
No. of air frosts
       
Total for month
                   
Total for month
                   
                               
% of average
                   
% of average
                 
                                                                     
                                   
Highest
   
Lowest
 
Year
             
Highest
   
Lowest
 
Year
       
             
Date
   
Date
         
Date
         
Year
         
Date
         
Year
           
                                                                     
    C     C     C     C           Hrs     Hrs       Hrs     Hrs       mm     mm       mm     mm          
                                                                                                                                             
  *Hampstead   12.2   +2.4   07.8   +3.6   16.6   03   01.8   23   03   00   04   06.8   13   064   099   1910   109   1989   030   1932   06   22.7   03   034   048   1910   183   2002   05   1945   00   00   02  
  *Thorney Island   13.6   +2.5   09.4   +3.9   16.6   03   -00.9   28   02   01   02   06.6   06   092   114   1958   135   2006   038   1994   12   12.4   03   041   050   1941   205   1970   07   1945   00   00   00  
  *Wattisham   12.2   +3.0   07.5   +4.0   16.4   03   -01.2   28   03   01   10   07.8   19   077   117   1968   114   1989   041   1983   09   15.2   03   026   049   1960   156   1970   19   1978   00   00   02  
  *Wittering   11.8   +2.8   07.0   +3.0   17.4   03   -00.8   28   03   01   08   05.7   25   053   079   1950   114   2006   038   1968   17   13.4   03   023   040   1945   131   1970   11   1945   00   00   03  
                                                                     
  *Lyneham   12.2   +2.6   07.7   +3.7   15.9   03   00.0   28   03   00   10   08.2   06   058   080   1952   105   1971   026   1994   11   09.2   11   045   055   1945   145   1951   10   1945   00   00   05  
  Ross-on-Wye   12.9   +3.0   08.0   +3.5   16.9   13   -00.7   07   04   01   08   06.8   01   058   088   1914   108   1923   025   1945   07   14.8   11   063   086   1859   227   1929   11   1945   00   00   02  
  *St Athan   12.8   +2.7   09.1   +3.6   16.3   03   02.7   23   04   00   12   08.1   06   061   087   1954   106   1971   034   1994   11   10.0   11   056   053   1954   215   1970   32   1956   00   00   00  
  Culdrose   13.4   +2.1   10.0   +3.3   15.5   12   02.5   07   04   00   12   08.3   06   065   087   1960   119   1990   034   1981   11   14.8   16   055   048   1960   259   2002   37   2004   00   00   00  
                                                                     
  *Edgbaston   11.2   +1.7   07.7   +2.9   15.3   03   01.7   07   02   00   05   05.6   06   054   085   1887   099   1977   014   1912   15   07.2   30   034   049   1887   198   1951   17   1920   00   00   05  
  *Valley   13.2   +2.5   08.7   +2.0   18.0   13   00.3   07   04   00   06   07.9   06   078   118   1946   089   1989   032   2004   10   22.0   21   062   058   1941   219   2000   27   1983   00   00   00  
  *Woodford   12.1   +3.3   06.8   +3.1   16.5   03   -03.6   07   07   02   04   08.1   06   075   122   1945   089   1975   024   1946   10   07.6   04   038   048   1942   179   2000   11   1945   00   00   04  
  *Watnall   11.5   +2.5   07.2   +3.2   16.4   03   00.1   28   02   00   12   07.4   06   053   079   1948   101   2005   031   2002   12   09.0   04   034   058   1942   145   1951   07   1945   00   00   06  
                                                                     
  *Leeming   11.4   +2.2   06.1   +2.4   17.7   03   -03.4   07   06   01   14   07.3   06   039   069   1945   111   1947   027   1946   13   06.4   02   029   047   1944   161   2009   10   1945   00   00   05  
  *Boulmer   11.4   +2.4   06.9   +2.9   13.9   26   -00.3   07   03   01   08   07.7   06   065   090   1945   109   1947   025   1968   12   04.0   02   025   038   1945   186   2010   13   1973   00   00   01  
  *Eskdalemuir   10.2   +2.8   04.8   +2.9   14.4   03   -02.9   06   09   03   11   07.9   07   045   081   1911   089   1925   020   1946   06   33.2   26   213   134   1911   432   2009   18   1945   00   00   07  
  *Bishopton   11.1   +2.1   06.3   +3.1   15.3   03   -01.6   06   04   02   12   07.8   01   051   098   1921   090   1996   023   1941   06   54.8   28   226   208   1921   303   2006   08   1945   00   00   02  
                                                                     
  *Leuchars   11.5   +2.7   06.3   +3.1   15.7   03   00.7   06   14   00   07   07.9   06   067   092   1922   109   1947   033   1968   13   07.8   11   046   073   1922   194   1963   11   1942   00   00   01  
  *Dyce   11.2   +2.8   06.5   +3.8   15.7   26   -02.4   07   07   02   12   07.5   06   044   069   1941   097   1996   023   1941   08   06.6   03   036   044   1941   268   1984   19   1964   00   00   02  
  *Stornoway   11.3   +2.4   06.9   +2.7   15.0   03   02.1   16   06   00   09   06.1   16   054   119   1880   073   1968   019   1881   05   23.8   22   140   105   1943   228   1981   24   1945   00   00   00  
  *Aldergrove   11.8   +2.6   07.5   +3.3   14.3   02   -00.1   06   05   01   10   08.4   06   069   126   1927   083   2010   026   1962   11   21.8   28   082   111   1927   158   2002   15   1942   00   00   03  
                                                                     
                                                                                                                                             
  Stations marked with an asterisk record sunshine electronically; comparisons      
  with earlier records are therefore somewhat speculative. Thorney Island's      
  sunshine figures are made at a nearby site.