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Rollercoaster highs and lows years CET wise


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Posted
  • Location: Windermere 120m asl
  • Location: Windermere 120m asl

    Thinking how 2021 is planning out so far... when was the last time we had a rollercoaster year CET wise, I.e. a year that produced cold  warm, cold, warm etc in succession, rather than just cold or warm, or near average platitudes.. 

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    Posted
  • Location: Irlam
  • Location: Irlam
    6 hours ago, damianslaw said:

    Thinking how 2021 is planning out so far... when was the last time we had a rollercoaster year CET wise, I.e. a year that produced cold  warm, cold, warm etc in succession, rather than just cold or warm, or near average platitudes.. 

     

    2012 was up and down during the first 5 months

    1983 was all over the place, very mild January, a cold February, an above average March, a cold April-May

    1968, I have mentioned the similarities between this year and 1966 

     

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    Posted
  • Location: near Edenbridge - 178ft
  • Weather Preferences: Cold snowy winters and cool, wet springs and summers.
  • Location: near Edenbridge - 178ft

    there is a thread on THE ultimate flip flop year on this very site! the freakish year of 1817. have a read, it’s very interesting. 

     

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    Posted
  • Location: Broxbourne, Herts
  • Weather Preferences: Snow snow and snow
  • Location: Broxbourne, Herts

    Not so much a year, but in the decade 1790 to 1799, the month of April produced three of its ever coldest months (ie in the coldest 10% of Aprils) while also producing five of its warmest months!

     

    Of the 22 Aprils since 1659 that have had a mean CET of 10C or more, 4 of them came in that 1770-79 decade, 4 of them came in the 1940-49 decade, and 5 of them have come this century.... the four periods alone accounting for nearly 60% of such Aprils.


     

     

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    Posted
  • Location: Basingstoke
  • Weather Preferences: In summer, a decent thunderstorm, and hot weather. In winter, snow or gale
  • Location: Basingstoke

    I've had a think in the years I've been around and honestly can't think of any years, looking through the figures.  However I do remember 2005 as a year of having notable temperature swings in so many months.

    Feb v mild 1st half then v cold 2nd half

    March v cold 1st half then v mild second half

    June v cool 1st half then v warm 2nd half

    July v warm 1st half, v cool 2nd half

    November v mild 1st then v cold 2nd

    Can't remember so many switcharounds within a single year

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    Posted
  • Location: Windermere 120m asl
  • Location: Windermere 120m asl
    3 hours ago, SummerShower said:

    I've had a think in the years I've been around and honestly can't think of any years, looking through the figures.  However I do remember 2005 as a year of having notable temperature swings in so many months.

    Feb v mild 1st half then v cold 2nd half

    March v cold 1st half then v mild second half

    June v cool 1st half then v warm 2nd half

    July v warm 1st half, v cool 2nd half

    November v mild 1st then v cold 2nd

    Can't remember so many switcharounds within a single year

    Yes 2005 did bring marked switcharounds at mid month intervals but overall these smoothed out to produce near average month, so the 'rollercoaster' plot doesn't show.

    Someone mentioned 1983, that was quite a see-saw year, but the second half saw fewer extremes.

    2012 also mentioned, certainly Feb to Apr was a rollercoaster, but the rest of the year was just rather cold, with few highs and lows.

    Yes struggling to think of many years that fit the bill, 2001 was quite undulating in nature.. also 1996 to a degree.

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    Posted
  • Location: Edinburgh (previously Chelmsford and Birmingham)
  • Weather Preferences: Unseasonably cold weather (at all times of year), wind, and thunderstorms.
  • Location: Edinburgh (previously Chelmsford and Birmingham)

    There was some see-sawing in 2012 outside of the first five months. June and July were mostly cool and wet, but both had spells of warm/hot days in their final weeks. September had a hot spell in the opening week before then becoming much cooler, and December was very much a month of two halves: the first half was excellent, with thick frosts and snow featuring, while the second half was extremely mild.

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    Posted
  • Location: Edinburgh (previously Chelmsford and Birmingham)
  • Weather Preferences: Unseasonably cold weather (at all times of year), wind, and thunderstorms.
  • Location: Edinburgh (previously Chelmsford and Birmingham)
    17 hours ago, Timmytour said:

    Not so much a year, but in the decade 1790 to 1799, the month of April produced three of its ever coldest months (ie in the coldest 10% of Aprils) while also producing five of its warmest months!

     

    Of the 22 Aprils since 1659 that have had a mean CET of 10C or more, 4 of them came in that 1770-79 decade, 4 of them came in the 1940-49 decade, and 5 of them have come this century.... the four periods alone accounting for nearly 60% of such Aprils.


     

     

    Both the late 1700s and the 1940s were pretty wild, especially if you're after Spring heat. Loads of daily records from these periods.

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    Posted
  • Location: Windermere 120m asl
  • Location: Windermere 120m asl
    8 hours ago, Relativistic said:

    There was some see-sawing in 2012 outside of the first five months. June and July were mostly cool and wet, but both had spells of warm/hot days in their final weeks. September had a hot spell in the opening week before then becoming much cooler, and December was very much a month of two halves: the first half was excellent, with thick frosts and snow featuring, while the second half was extremely mild.

    Yes a bit like 2005 where the sea saws came within the month itself rather than from month to month, hence they averaged out to produce near average months that didn't deviate too much from one another. This year has been different to an extent so far, Jan was consistently cold producing a cold CET, Feb odd one out where the cold first half was cancelled out by a very mild second half to produce a slightly milder month but was a rise from Feb, the ride continued to climb in March, then a marked fall in April, stuttered on the bottom in May, looks like major lift off again June, lets hope we don't come crashing back down in July! - all relative to average.

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    Posted
  • Location: Irlam
  • Location: Irlam

    Some peculiar CET quirks

     

    Jan 1867: 1.2

    Feb 1867: 6.9

    Mar 1867: 3.1

    Apr 1867: 9.3

     

    Feb 1869: 7.5

    Mar 1869: 3.8

    Apr 1869: 10.1

     

     

    Mar 1780: 7.9

    Apr 1780: 6.3

    May 1780: 12.8

     

    Apr 1755: 10.0

    May 1755: 9.4

    Jun 1755: 15.7

     

    May 1749: 12.3

    Jun 1749: 11.9

    Jul 1749: 17.2

     

    Oct 1921: 12.8

    Nov 1921: 4.6

    Dec 1921: 6.5

     

    Oct 1817: 6.4

    Nov 1817: 9.1

    Dec 1817: 2.5

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    Posted
  • Location: Windermere 120m asl
  • Location: Windermere 120m asl
    Posted (edited)

    Yes some roller coasters in this. Can't be many instances when June was colder than the previous May.

    Edited by damianslaw
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    Posted
  • Location: near Edenbridge - 178ft
  • Weather Preferences: Cold snowy winters and cool, wet springs and summers.
  • Location: near Edenbridge - 178ft

    to a lesser extent the first half of 2008 seemed to yo-yo between warm and cold. generally very mild through january, then february cycled through warmth but also very cold and frosty weather. then march was generally chilly and stormy, april brought cold and snow, then may turned very warm before another flop to quite a chilly june. the second half of 2008 was more homogenised in that most months were average to quite cold. 

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