Cet Hot Spells

[AderynCoch]

About a year or so back, when I was a mere lurker, I came across Mr. Data's highly interesting and informative list of freezing spells in the daily CET record - this inspired me to develop a corresponding list for hot spells.

What follows is a list of periods of five or more consecutive days with a CET of 18.0C or above - I usually see 20C used as the cut-off due to it being a nice round number, but after some deliberation I decided on 18C as I felt it corresponded better to the cold equivalent of using 0C as the golden number (which unlike 20C is not only nice and round but is also the freezing point of water, which as we all know has very significant implications for the weather). For one thing, there are about the same number of months in the CET records with an average of 0C or below (39) as there are 18C or above (36 - there are no CET months in the records of 20C or above).

Anyway:

5-15th August 1773 – 19.65

12-16th July 1778 – 19.90

3-7th August 1778 – 18.92

9-16th July 1779 – 19.60

11-15th August 1779 – 19.38

26th August – 2nd September 1779 – 18.86

28th June – 3rd July 1780 – 18.85

8-13th August 1781 – 19.63

8-20th July 1783 – 19.48

17-21st August 1783 – 18.68

27th June – 1st July 1785 – 18.70

24-28th May 1788 – 18.58

9-14th August 1792 – 19.77

10-17th July 1793 – 20.41

14-18th July 1797 – 20.24

24-30th July 1797 – 19.26

30th July – 4th August 1800 – 19.92

15-20th August 1800 – 19.40

4-10th August 1802 – 18.71

12-17th August 1803 – 18.68

11-20th July 1808 – 21.40

18-24th June 1817 – 19.83

14-19th July 1818 – 19.08

21-27th July 1818 – 20.20

24-28th June 1820 – 20.92

12-20th July 1825 – 21.28

26th June – 11th July 1826 – 20.26

30th July – 3rd August 1826 – 19.60

25-31st July 1830 – 20.41

27th July – 1st August 1831 – 19.07

7-12th June 1835 – 18.93

23-28th July 1837 – 19.40

14-20th August 1837 – 18.76

3-7th June 1846 – 19.62

11-22nd June 1846 – 19.94

28th July – 2nd August 1846 – 20.25

10-16th July 1847 – 20.54

4-17th July 1852 – 20.38

30th July – 5th August 1856 – 20.19

9-14th August 1856 – 19.30

23-28th June 1857 – 19.22

31st July – 5th August 1857 – 18.90

15-20th July 1859 – 19.90

26-30th June 1866 – 18.94

9-15th July 1866 – 18.96

7-11th July 1868 – 18.72

1-6th August 1868 – 20.62

19-27th July 1870 – 19.56

9-14th August 1871 – 19.82

20-28th July 1872 – 19.34

13-18th July 1876 – 19.92

12-17th August 1876 – 21.20

23-29th June 1878 – 20.44

17-22nd July 1878 – 21.00

7-13th August 1884 – 20.50

23-27th July 1885 – 19.66

2-6th July 1886 – 19.06

7-13th July 1887 – 19.10

15-19th June 1893 – 19.74

8-21st August 1893 – 20.36

2-7th August 1897 – 19.92

11-16th August 1898 – 19.32

3-9th September 1898 – 19.96

30th July – 5th August 1899 – 19.24

23-27th August 1899 – 19.66

18-28th July 1900 – 19.98

8-12th July 1901 – 19.02

17-21st July 1901 – 21.58

13-17th July 1904 – 18.84

11-15th July 1905 – 19.16

25th July – 3rd August 1911 – 20.08

7-14th August 1911 – 20.90

7-20th July 1921 – 20.45

5-15th July 1923 – 20.66

21-25th July 1925 – 20.66

11-15th July 1926 – 20.94

26-30th August 1930 – 21.54

16-20th August 1932 – 19.98

3-8th June 1933 – 19.67

2-8th July 1933 – 19.89

23-27th July 1933 – 19.38

3-8th August 1933 – 21.00

5-13th July 1934 – 19.89

21-25th June 1935 – 20.96

10-15th July 1935 – 19.83

1-7th August 1937 – 18.97

31st July – 11th August 1938 – 19.09

26-30th August 1939 – 18.28

5-10th June 1940 – 19.28

18-22nd June 1941 – 20.12

6-14th July 1941 – 20.04

27th July – 1st August 1943 – 20.30

9-13th July 1946 – 18.96

29th May – 4th June 1947 – 20.83

25th July – 3rd August 1947 – 19.71

12-23rd August 1947 – 20.28

25-31st July 1948 – 21.93

26-30th June 1949 – 19.64

21-27th July 1949 – 20.20

3-7th June 1950 – 19.92

26th June – 2nd July 1952 – 19.53

19-23rd July 1952 – 18.98

7-18th July 1955 – 19.43

30th July – 3rd August 1955 – 18.80

16-26th August 1955 – 19.95

15-19th June 1957 – 19.34

27th June – 1st July 1957 – 19.82

22-26th July 1959 – 19.32

19-26th August 1959 – 19.83

12-16th July 1969 – 19.84

7-11th June 1970 – 20.38

1-6th August 1970 – 19.07

7-12th July 1971 – 18.92

13-17th August 1973 – 19.96

27th July – 15th August 1975 – 20.35

22nd June – 9th July 1976 – 22.04

11-16th July 1976 – 18.78

11-26th August 1976 – 19.05

1-6th June 1982 – 19.45

30th July – 6th August 1982 – 19.31

4-18th July 1983 – 20.81

22-31st July 1983 – 19.45

17-26th August 1983 – 18.98

18-25th August 1984 – 19.70

29th August – 3rd September 1984 – 19.02

26-30th June 1986 – 20.06

16-20th June 1989 – 19.10

17-26th July 1989 – 20.67

18-22nd July 1990 – 19.50

30th July – 4th August 1990 – 21.25

22-29th August 1990 – 19.63

31st August – 4th September 1991 – 18.98

20-27th July 1994 – 19.40

7-14th July 1995 – 19.41

24th July – 6th August 1995 – 21.04

15-23rd August 1995 – 20.81

19-23rd July 1996 – 19.48

17-21st August 1996 – 19.60

6-23rd August 1997 – 20.84

7-11th August 1998 – 19.34

7-12th July 1999 – 19.15

30th July – 6th August 1999 – 20.08

2-6th September 1999 – 18.82

1-7th July 2001 – 20.33

25th July – 1st August 2001 – 19.60

26-30th July 2002 – 19.84

13-19th July 2003 – 20.13

4-13th August 2003 – 21.69

1-12th August 2004 – 19.71

14-18th August 2004 – 18.38

10-15th July 2005 – 20.63

30th June – 6th July 2006 – 20.64

16-30th July 2006 – 21.21

23-31st July 2008 – 19.28

27th June – 3rd July 2009 – 20.39

Any mistakes or the like, let me know!

[AderynCoch]

26-30th June 2010 - 18.82

Today should also come out above 18C, in which case we'll have to wait until the end of July to extend the run.

[stewfox]

27th June – 3rd July 2009 – 20.39

Any mistakes or the like, let me know!

Are these Max CET not average CET ??

ps what do you do for a living

[AderynCoch]

Nope, average CET. The maximum CET for the period in question was 25.6C.

I work in the computer section of a library. In my spare time, it may surprise you to know I like to study the weather...

[johnholmes]

thanks for the work involved in this interesting thread AdC

[AderynCoch]

Cheers! Looks like I timed it right too.

[Weather-history]

Hi

Interesting list

Here's one that you missed

24th-28th September 1895: 18.6

[AderynCoch]

Yes, good spot!

That's phenomenally late in the year for a hot spell. I probably didn't look that far ahead.

[AderynCoch]

26th June - 2nd July 2010: 18.74