5 consecutive days or more of CET daily means of 0C or below

[Weather-history]

Well the recent ones are based on the legacy but they don't seem to be affected by criteria by the updated CETs just maybe on their average.

Possibly another one to add to the list? 

[Roger J Smith]

I looked to see if v2.0 had moved Dec 2000 into the list (because that month got a larger downgrade than most others), not quite, the coldest five days were 27-31 Dec with -0.1, -1.2, -4.0, -3.3, +0.1 which is a pretty strong also-ran. Average of those would be -1.70 which is colder than Feb 2021. That one suffered from some upward moves but retained six days of negative means (it is now -0.2, -0.3, -0.1, -2.0, -0.3, -0.6 (average -0.58). The 2018 spell survived as five days too, despite some increases, with -0.1 on 26th Feb.

The legacy values for those five days in late Dec 2000 were +0.9, -0.2, -1.9, -0.8, +1.7 so the five days were dropped by 1.64 C on average. 

 

[Relativistic]

Yesterday was our first subzero mean. The official mean hasn't yet been released, but the min was -5.1°C and the max 3.0°C, so -1.0°C or -1.1°C.

Could get a decent run out of this.

Edited December 9, 2022 by Relativistic

[Relativistic]

Four consecutive subzero means now (-1.1, -0.8, -0.5, -1.5). Could potentially get another six, thus giving a healthy run of ten days.

[Frigid]

On 12/12/2022 at 13:31, Relativistic said:

Four consecutive subzero means now (-1.1, -0.8, -0.5, -1.5). Could potentially get another six, thus giving a healthy run of ten days.

When was the last time we had a run like this? I'm guessing Dec 2010.. 10 days of sub zero means is quite noteworthy.

[Relativistic]

January 2013 had a run of eight days on both the legacy and current values. Before that you're looking at December 2010 for a longer run.

Just to reiterate what others have already said in the December CET thread, yesterday's mean was -2.0C, thus securing our five-day run (AFAIK the current values aren't subject to corrections).

Edited December 13, 2022 by Relativistic

[The PIT]

5 hours ago, Frigid said:

When was the last time we had a run like this? I'm guessing Dec 2010.. 10 days of sub zero means is quite noteworthy.

End of Feb to March 2018 here the beast from the east.

[damianslaw]

3 hours ago, Relativistic said:

January 2013 had a run of eight days on both the legacy and current values. Before that you're looking at December 2010 for a longer run.

Just to reiterate what others have already said in the December CET thread, yesterday's mean was -2.0C, thus securing our five-day run (AFAIK the current values aren't subject to corrections).

Confused - we are now on 5 days then? Today will comfortably be a sixth day, and I expect tomorrow and quite possibly Thursday, which would make it a 7 day run. Friday looks like it will end the very cold spell. 

[Weather-history]

Looking at the list just for those periods that were wholly or mostly before 17th December

26th Nov - 4th Dec 2010: -1.9
8th-14th Dec 1981: -3.51
27th Nov-1st Dec 1978: -0.6
2nd-6th Dec 1962: -1.08
12th-16th Dec 1920: -1.66
23rd-27th Nov 1904: -1.96
4th-8th Dec 1902: -1.9
9th-26th Dec 1890: -2.14

30th Nov-8th Dec 1879: -3.37
8th-17th Dec 1878: -2.95
14th-18th Dec 1874: -4.5

13th-19th Dec 1859: -4.89
11th-16th Dec 1846: -2.63
5th-14th Dec 1844: -2.68
8th-14th Dec 1819: -2.94
12th-16th Dec 1812: -1.46
5th-10th Dec 1803: -1.72
12th-20th Dec 1801: -2.28
30th Nov-11th Dec 1796: -1.78
12th-20th Dec 1788: -2.49
 

[Midlands Ice Age]

Damian

There are 2 different sets of numbers being discussed 

From Metoffice.gov 

1) the means -

From 8/12   -1,1,   -0.8,   -0.5,   -1.4,   -1.9,  -2.3, and for the 14th     -2.5,

That makes 7 days up to and including Wednesday. It will be 8 including yesterday.

Remember that they enter a day behind, so data for the 15th will be recorded today.

2) the 'max' CET for the day -

From 8/12 it reads +3.0,  +3.5,   +3.2,  +0.7,   +0.1,    -0.4 and for the 14th +0.4....

The only 'possible' daily records were for the 'max'  for the day where the numbers were for the 15th (which will be available later today) and 16th, whose current values are +0.4C and -0.2C. It is thought they we may have beaten the +0.4C figure, but we will know later.

MIA

 

Edited December 16, 2022 by Midlands Ice Age

[Midlands Ice Age]

5 hours ago, Midlands Ice Age said:

Damian

There are 2 different sets of numbers being discussed 

From Metoffice.gov 

1) the means -

From 8/12   -1,1,   -0.8,   -0.5,   -1.4,   -1.9,  -2.3, and for the 14th     -2.5,

That makes 7 days up to and including Wednesday. It will be 8 including yesterday.

Remember that they enter a day behind, so data for the 15th will be recorded today.

2) the 'max' CET for the day -

From 8/12 it reads +3.0,  +3.5,   +3.2,  +0.7,   +0.1,    -0.4 and for the 14th +0.4....

The only 'possible' daily records were for the 'max'  for the day where the numbers were for the 15th (which will be available later today) and 16th, whose current values are +0.4C and -0.2C. It is thought they we may have beaten the +0.4C figure, but we will know later.

MIA

 

Well we were all caught on the blindside...!!!

Yesterday, the 15th,  recorded a minimum  CET of -9.3C , which was the lowest since records were calculated as they are today.  (since 1871). It beat the previous legacy and version 2 records of -8.4 and -8.3C respectively.The low maximum for the date was not beaten as it showed +0.5C. However,  the mean CET of -4.4C yesterday, extended the number of CET negative days to 8, 

MIA 

[Relativistic]

On 16/12/2022 at 09:20, Weather-history said:

Looking at the list just for those periods that were wholly or mostly before 17th December

26th Nov - 4th Dec 2010: -1.9
8th-14th Dec 1981: -3.51
27th Nov-1st Dec 1978: -0.6
2nd-6th Dec 1962: -1.08
12th-16th Dec 1920: -1.66
23rd-27th Nov 1904: -1.96
4th-8th Dec 1902: -1.9
9th-26th Dec 1890: -2.14

30th Nov-8th Dec 1879: -3.37
8th-17th Dec 1878: -2.95
14th-18th Dec 1874: -4.5

13th-19th Dec 1859: -4.89
11th-16th Dec 1846: -2.63
5th-14th Dec 1844: -2.68
8th-14th Dec 1819: -2.94
12th-16th Dec 1812: -1.46
5th-10th Dec 1803: -1.72
12th-20th Dec 1801: -2.28
30th Nov-11th Dec 1796: -1.78
12th-20th Dec 1788: -2.49
 

Impressive when considered in this context.

Not the best comparison to make, but another interesting statistic is the fact that this December's current mean minimum would place it fifth in the rankings. This, of course, won't last.

Edited December 17, 2022 by Relativistic

[Relativistic]

On 12/12/2022 at 13:31, Relativistic said:

Four consecutive subzero means now (-1.1, -0.8, -0.5, -1.5). Could potentially get another six, thus giving a healthy run of ten days.

We've done it -- ten consecutive subzero means!

[Midlands Ice Age]

Re my post above (and thru Weather History's post of friday) from last week

This period (for December or earlier cold) has been one of the coldest we have seen for a 10 day period  in the CET history.

The coldest and longest (qualifying 10 days) are given below...

1) 8th - 17th Dec 1878    mean temp --2.95C.

2) 5th -14th Dec 1844     mean temp -2.68C.

3) 9th - 26th Dev 1890    mean temp -2.14C

4) 8th - 17th Dec 2022     mean temp -1.88C.

MIA

Edited December 18, 2022 by Midlands Ice Age

[Weather-history]

Here is a list of those periods that contained at least 10 consecutive days of a CET daily mean of at least 0C or less 

17th-27th Dec 2010: -3.93
26th Nov - 4th Dec 2010: -1.9
3rd-14th Feb 1991: -1.9

8th-19th Jan 1987: -3.0
6th-18th Feb 1986: -1.51
9th-19th Feb 1985: -2.72
6th-15th Jan 1982: -4.03

7th-26th Jan 1963: -3.56
23rd Dec 1962-3rd Jan 1963: -2.37
14th-26th Feb 1956: -1.71
17th-28th Feb 1955: -1.825
26th Jan-7th Feb 1954: -2.49
5th-26th Feb 1947: -2.46
24th Jan-2nd Feb 1947: -2.08
20th-29th Jan 1945: -3.52
10th-19th Feb 1940: -1.84
10th-24th Jan 1940: -3.49

1st-11th Feb 1917: -2.92
21st-30th Jan 1917: -1.27

5th-18th Feb 1895: -4.81
24th Dec 1892-7th Jan 1893: -3.31
9th-26th Dec 1890: -2.14
8th-27th Jan 1881: -4.38
18th-29th Jan 1880: -2.07

2nd-12th Jan 1879: -2.31
8th-17th Dec 1878: -2.95
21st Dec 1870-4th Jan 1871: -4.11

11th-21st Jan 1867: -2.85
17th-29th Dec 1860: -2.1
6th-23rd Feb 1855: -3.71
25th Dec 1853-5th Jan 1854: -1.93
11th-21st Feb 1853: -1.23
6th-16th Jan 1850: -1.35
5th-14th Dec 1844: -2.68
1st-10th Feb 1841: -2.94
8th-21st Jan 1838: -5.14
24th Dec 1836- 2nd Jan 1837: -1.27
16th-25th Jan 1829: -2.91
8th-17th Jan 1826: -3.7
9th-26th Jan 1823: -2.96
25th Dec 1820-4th Jan 1821: -1.32
3rd-16th Jan 1820: -3.57
27th Dec 1813-27th Jan 1814: -3.15
29th Dec 1810- 10th Jan 1811: -1.52

14th-23rd Jan 1809: -2.3
28th Jan-8th Feb 1799: -2.57
30th Nov-11th Dec 1796: -1.78
10th-26th Jan 1795: -3.79
18th Jan-1st Feb 1784: -2.07 
21st Jan-3rd Feb 1780: -1

7th Jan -1st Feb 1776: -2.96

[Weather-history]

8th-17th Dec 2022: -1.88

[Relativistic]

The recent spell wasn't far off.

 

15th of Jan: 0.1°C

16th: 0.3°C

17th: -0.5°C

18th: -2.0°C

19th: 0.1°C

 

A bit of snow on the ground and we might've done it.

[Weather-history]

Not sure what happened to all the data from that very first page

The CET average for that period is given

8th-17th Dec 2022: -1.88
8th-13th Feb 2021 CET: -0.75C

26th Feb-2nd Mar 2018: -2.24C
16th-23rd Jan 2013: -1.15
8th-12th Feb 2012: -1.54
3rd-10th January 2010: -2.3C

18th-24th December 2009: -1.1C
16th-20th Jan 2001: -0.78

31st Dec 1996- 4th Jan 1997: -1.66
25th-29th Jan  1996: -1.26
25th Dec-30th Dec 1995: -2.45
3rd-14th Feb 1991: -1.9

8th-19th Jan 1987: -3.0
20th-27th Feb 1986: -2.31
6th-18th Feb 1986: -1.51
9th-19th Feb 1985: -2.72
12th-18th Jan 1985: -2.31
6th-15th Jan 1982: -4.03
22nd-26th Dec 1981: -1.28
16th-20th Dec 1981: -2.62
8th-14th Dec 1981: -3.51

14th-18th Feb 1979: -1.8
21st-28th Jan 1979: -1.72
31st Dec 1978-6th Jan 1979: -2.91
27th Nov-1st Dec 1978: -0.6
9th-13th Feb 1978: -1.7
30th Jan-3rd Feb 1976: -0.72
31st Dec 1970- 5th Jan 1971: -1.92
11th-16th Feb 1970: -0.9
4th-8th Jan 1970: -2.28

13th-19th Feb 1969: -1.71
8th-12th Jan 1968: -1.6
19th-24th Dec 1963: -1.35
16th-20th Feb 1963: -0.74
1st-7th Feb 1963: -2.06
7th-26th Jan 1963: -3.56
23rd Dec 1962-3rd Jan 1963: -2.37
2nd-6th Dec 1962: -1.08
23rd-29th Dec 1961: -2.01

21st-25th Jan 1958: -1.86
14th-26th Feb 1956: -1.71
31st Jan-4th Feb 1956: -4.08
17th-28th Feb 1955: -1.825
26th Jan-7th Feb 1954: -2.49

1st-8th March 1947: -1.64
5th-26th Feb 1947: -2.46
24th Jan-2nd Feb 1947: -2.08
15th-22nd Jan 1946: -1.51
20th-29th Jan 1945: -3.52
25th-29th Dec 1944: -1.32
16th-23rd Feb 1942: -1.5
14th-22nd Jan 1942: -2.52
15th-19th Jan 1941: -2.04
2nd-6th January 1941: -2.58
10th-19th Feb 1940: -1.84
10th-24th Jan 1940: -3.49

18th-22nd Dec 1938: -2.34
18th-24th Dec 1935: -1.96
22nd-27th Jan 1933: -1.65

26th Feb-2nd Mar 1929: -1.76
11th-19th Feb 1929: -4.61
16th Dec-20th 1927: -2.86
13th-18th Jan 1926: -2.4
12th-16th Dec 1920: -1.66

8th-13th Feb 1919: -1.78
1st-11th Feb 1917: -2.92
21st-30th Jan 1917: -1.27

1st-6th Mar 1909: -1.57

27th-31st Dec 1908: -3.12
26th-30th Dec 1906: -1.5
20th-25th Dec 1904: -1.53
23rd-27th Nov 1904: -1.96
12th-17th Jan 1903: -1.88
4th-8th Dec 1902: -1.9
10th-14th Feb 1902: -2.26
5th-9th Jan 1901: -0.64
7th-13th Feb 1900: -2.11

5th-18th Feb 1895: -4.81
26th Jan -1st Feb 1895: -2.97
9th-13th Jan 1895: -2.16
3rd-8th Jan 1894: -4.4
24th Dec 1892-7th Jan 1893: -3.31
16th Feb-20th Feb 1892: -2.82
8th-16th Jan 1892: -1.64
20th-25th Dec 1891: -3.67
5th-11th Jan 1891: -2.04
28th Dec 1890-2nd Jan 1891: -1.32
9th-26th Dec 1890: -2.14

22nd-26th Feb 1888: -1.08
8th-27th Jan 1881: -4.38
18th-29th Jan 1880: -2.07

30th Nov-8th Dec 1879: -3.37
28th Jan -1st Feb 1879: -0.64
2nd-12th Jan 1879: -2.31
20th-26th Dec 1878: -3.24
8th-17th Dec 1878: -2.95
25th-31st Dec 1874: -2.86
14th-18th Dec 1874: -4.5
25th-31st Jan 1871: -0.97
21st Dec 1870-4th Jan 1871: -4.11
9th-14th Feb 1870: -2.38

11th-21st Jan 1867: -2.85
31st Dec 1866-5th Jan 1867: -3.9
10th-16th 1865: -1.73
19th-23rd Feb 1864: -1.08
1st-8th Jan 1864: -3.43
16th-20th Jan 1862: -1.7
2nd-10th Jan 1861: -2.32
17th-29th Dec 1860: -2.1
9th-14th Feb 1860: -2

13th-19th Dec 1859: -4.89
10th-14th Jan 1856: -0.98
6th-23rd Feb 1855: -3.71
25th Dec 1853-5th Jan 1854: -1.93
11th-21st Feb 1853: -1.23
6th-16th Jan 1850: -1.35

7th-13th Feb 1847: -2.61
11th-16th Dec 1846: -2.63
12th-17th Mar 1845: -2.92
7th-13th Feb 1845: -2.3
5th-14th Dec 1844: -2.68
13th-18th Feb 1843: -1.06
7th-11th Jan 1842: -1.02
1st-10th Feb 1841: -2.94
3rd-9th Jan 1841: -3.96

5th-9th March 1839: -1.32
10th-17th Feb 1838: -2.08
8th-21st Jan 1838: -5.14
20th-24th March 1837: -0.7
24th Dec 1836- 2nd Jan 1837: -1.27
22nd-26th Dec 1835: -1.94
4th-8th Jan 1835: -2.36
21st-25th Jan 1833: -1
23rd-27th Dec 1830: -3.36
30th Jan-6th Feb 1830: -4.55
12th-20th Jan 1830: -2.43
23rd Dec 1829-1st Jan 1830: -1.42

16th-25th Jan 1829: -2.91
16th-20th Feb 1827: -2.78
19th-27th Jan 1827: -2
8th-17th Jan 1826: -3.7
9th-26th Jan 1823: -2.96
26th Dec 1822-1st Jan 1823: -2.1
25th Dec 1820-4th Jan 1821: -1.32
3rd-16th Jan 1820: -3.57

24th Dec 1819-1st Jan 1820: -2.41
8th-14th Dec 1819: -2.94
22nd-26th Dec 1817: -0.96
7th-13th Feb 1816: -3.29
28th jan -1st Feb 1816: -2.06
19th-27th Jan 1815: -2.06
3rd-7th Jan 1815: -0.42
6th-10th Mar 1814: -0.64
20th-27th Feb 1814: -1.56
27th Dec 1813-27th Jan 1814: -3.15
21st-25th Jan 1813: -1.08
12th-16th Dec 1812: -1.46
26th-31st Dec 1811: -1.47
29th Dec 1810- 10th Jan 1811: -1.52
16th-22nd Feb 1810: -1.97

14th-23rd Jan 1809: -2.3
19th-26th Dec 1808: -2.24
5th-10th Dec 1803: -1.72
7th-12th Feb 1803: -1.8
25th-30th Jan 1803: -2.22
10th-16th Jan 1803: -2.13
10th-16th Jan 1802: -2.94
12th-20th Dec 1801: -2.28
5th-9th Mar 1800: -0.82

27th Dec 1799- 2nd Jan 1800: -2.66
19th-25th Dec 1799: -1.82
28th Jan-8th Feb 1799: -2.57
31st Dec 1798-7th Jan 1799: -0.7
24th-29th Dec 1798: -5.38
21st-27th Dec 1796: -3.59
30th Nov-11th Dec 1796: -1.78
17th-22nd Feb 1795: -2.52
29th Jan-7th Feb 1795: -1.56
10th-26th Jan 1795: -3.79
31st Dec 1794-6th Jan 1795: -4.1
17th-21st Feb 1792: -2.32

2nd-9th Jan 1789: -2.76
27th-31st Dec 1788: -2.34
12th-20th Dec 1788: -2.49
29th Dec 1785-4th Jan 1786: -4.21
9th-15th Feb 1784: -1.74
18th Jan-1st Feb 1784: -2.07
6th-11th Jan 1784: -2.28
27th Dec 1783-1st Jan 1784: -3.37
21st Jan-3rd Feb 1780: -1
8th-15th Jan 1780: -4.03

7th Jan -1st Feb 1776: -2.96
31st Dec 1773-5th Jan 1774: -2.28
7th-13th Feb 1773: -1.54
17th-21st Jan 1772: -1.3

Edited January 28 by Weather-history

[Relativistic]

  @Weather-history I can still see it (I take it you're referring to the very first post?)

The December 2010 spells are missing from the list just posted.