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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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#1
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Assuming that the main part of this winter has gone - and if the severe cold
does not return soon it would be a cold Spring rather than a cold Winter - I had a quick look through my records. They are not to the official standard, but they do allow a comparison of "like with like". The observatory location is in my "sig" at the end of the post. There were *three* winters at this site in the 1980s which set records the current winter has not even approached. 1982 - A real Siberian blast arrived in January, and overnight 13/14 January our thermometer sunk to -14C, and that with a significant easterly blowing so it was not just a radiation night over snow. It hasn't been below -11C since. We also had 21 days with snow lying that winter - this year we have had 12 (3 in December and 9 consecutive in January). 1985 - From 13-18 January the temperature remained below freezing, a record of six consecutive "Ice Days". We have had no more than two together at a time this winter. 1985 had 12 "Ice Days" and no less than 104 days with frost in the year between December 1 1984 and November 30 1985. 1987 - On 12 January the temperature did not rise above -6.7C. No Ice Day since has even got near this, the maximum is normally about -2C or -3C at worst. For "afters" we had 18cm of level snow down on 19 March that year. And in the very first month of my records, January 1980, the temperature only rose above freezing on 6 of the 31 days. This year was actually close, only 8 days in January with no frost. All the above records still stand and so have stood for over 20 years. As I am one of those who accept the evidence for global warming - and can see the signal in the annual temperatures for my own station - I do not expect to see them broken (except possibly the snow depth) unless we get something truly exceptional. However, I get the impression from other contributors that the situation varies across the country and, in particular, the further north you go the more severe in relation to past years this winter has been. It would be interesting to see some similar statistics from other locations and see how exceptional - or otherwise - this winter is depending on where you live. -- - Yokel - Yokel @ Ashurst New Forest SU 336 107 17m a.s.l. "Yokel" posts via a spam-trap account which is not read. |
#2
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On Feb 2, 7:45*pm, "Yokel" wrote:
Assuming that the main part of this winter has gone - and if the severe cold does not return soon it would be a cold Spring rather than a cold Winter - I had a quick look through my records. *They are not to the official standard, but they do allow a comparison of "like with like". *The observatory location is in my "sig" at the end of the post. There were *three* winters at this site in the 1980s which set records the current winter has not even approached. 1982 - A real Siberian blast arrived in January, and overnight 13/14 January our thermometer sunk to -14C, and that with a significant easterly blowing so it was not just a radiation night over snow. *It hasn't been below -11C since. *We also had 21 days with snow lying that winter - this year we have had 12 (3 in December and 9 consecutive in January). 1985 - From 13-18 January the temperature remained below freezing, a record of six consecutive "Ice Days". *We have had no more than two together at a time this winter. *1985 had 12 "Ice Days" and no less than 104 days with frost in the year between December 1 1984 and November 30 1985. 1987 - On 12 January the temperature did not rise above -6.7C. *No Ice Day since has even got near this, the maximum is normally about -2C or -3C at worst. *For "afters" we had 18cm of level snow down on 19 March that year. And in the very first month of my records, January 1980, the temperature only rose above freezing on 6 of the 31 days. *This year was actually close, only 8 days in January with no frost. I guess you mean "there was no frost on 6 of the 31 days" ; do you mean 1979? I don't remember January 1980 (in north-west Sussex) being at all remarkable - to be honest I remember very little about it at all, cold or mild, wet or dry - but I'm pretty sure there was no snow. Nick |
#3
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![]() "Yokel" wrote in message ... Assuming that the main part of this winter has gone - and if the severe cold does not return soon it would be a cold Spring rather than a cold Winter - I had a quick look through my records. They are not to the official standard, but they do allow a comparison of "like with like". The observatory location is in my "sig" at the end of the post. There were *three* winters at this site in the 1980s which set records the current winter has not even approached. 1982 - A real Siberian blast arrived in January, and overnight 13/14 January our thermometer sunk to -14C, and that with a significant easterly blowing so it was not just a radiation night over snow. It hasn't been below -11C since. We also had 21 days with snow lying that winter - this year we have had 12 (3 in December and 9 consecutive in January). Meanwhile in Wishaw in 1982 - the temperature remained sub zero from the evening of the 5th of January until the afternoon of the 12th. Every day from the 6th to the 11th (6 days) recorded a sub -10ēC minimum. Helped undoubtedly by the 18cm's of snow on the ground deposited on the 4th and 5th. This 6 day feat also happened in 2010 (but not every day was an ice day). The absoloute minimum was -18.3ēC during the early hours of the 11th, 1982. Four degrees lower than it's 2010 counterpart, but the temperature eclipsed this feat three times in December 1995. Snow lay for a total of 16 days in Jan 1982 here, but for 17 days in 2010... and 16 of them were a continuation from 15 lying days in December 2009. In 1982, the mean temperature for the 2nd half of the month was +5.6ēC, but in 2010 the same statistic was a much cooler +2.6ēC. January 2010 was overall 1.3ēC cooler and had much deeper snow lying than it's 1982 counterpart. But the really cold month was December 1981, which trounces December 2009 or January 2010 temperature wise, where January 1982 does not. 1985 - From 13-18 January the temperature remained below freezing, a record of six consecutive "Ice Days". We have had no more than two together at a time this winter. 1985 had 12 "Ice Days" and no less than 104 days with frost in the year between December 1 1984 and November 30 1985. January 1985 was a cold month indeed in Wishaw, colder than December 2009 and marginally cooler than January 2010. The first 28 days had consecutive air frosts and the maximum temperature only reached above 5ēC on the final three days. There were often coverings of snow that would last a few days, but nothing deeper than 10cm's here. There were only 2 ice days here that month. But with 24 days with lying snow and 28 air frosts, it was the coldest January (and still is) since 1979. December 1981, February 1986 and December 1995 were all colder here though. 1987 - On 12 January the temperature did not rise above -6.7C. No Ice Day since has even got near this, the maximum is normally about -2C or -3C at worst. For "afters" we had 18cm of level snow down on 19 March that year. Yes, a classic snowy month. Temperature wise on par with January 2010 in this area, but the temperature extremes (lowest max or min) can't quite match 2010, mainly because it was invariably snowing every night during the peak of the cold period. Where it does win easily is in depth of snow. The peak depth in January 2010 was 31cm, but January 1987 had a whopping 65cm here. With a full week off school I had the time of my life. We didn't have to build igloos, we only had to tunnel them out under the snow. Despite the great depth, it had all gone by the 22nd of the month. And in the very first month of my records, January 1980, the temperature only rose above freezing on 6 of the 31 days. This year was actually close, only 8 days in January with no frost. In this area January 1980 had it's fair share of frosts and snowfalls, but all of them were fairly transient. All the above records still stand and so have stood for over 20 years. As I am one of those who accept the evidence for global warming - and can see the signal in the annual temperatures for my own station - I do not expect to see them broken (except possibly the snow depth) unless we get something truly exceptional. However, I get the impression from other contributors that the situation varies across the country and, in particular, the further north you go the more severe in relation to past years this winter has been. It would be interesting to see some similar statistics from other locations and see how exceptional - or otherwise - this winter is depending on where you live. -- - Yokel - Yokel @ Ashurst New Forest SU 336 107 17m a.s.l. I don't think the departure from average in January has been all the different whether you are in the north or south of the country, but where the real North/South split lay was in December 2009, but neither month can hold a candle to December 1981, February 1986 or December 1995 for temperature records in this area. And neither can hold a candle to January 1987 or February 2001 for volume of snow at any one time. Well, not since 1980 at least. What I can say is that it has been the most prolonged cold spell since - well, aside from the odd day or two, it's still ongoing around here. Too early to put it fully in context on a historical level. Alex. |
#4
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In article ,
Yokel writes: snip interesting stuff And in the very first month of my records, January 1980, the temperature only rose above freezing on 6 of the 31 days. This year was actually close, only 8 days in January with no frost. That confuses me somewhat. Do you really mean that the minima were above freezing on only 6 days, rather than the maxima? I must admit that I'd forgotten all about that month, although a CET of 2.3 indicates that it was quite chilly. I suppose it just came as a bit of an anticlimax compared with a year earlier. -- John Hall "Acting is merely the art of keeping a large group of people from coughing." Sir Ralph Richardson (1902-83) |
#5
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|"Nick" wrote in message
... |On Feb 2, 7:45 pm, "Yokel" wrote: Assuming that the main part of this winter has gone - and if the severe cold does not return soon it would be a cold Spring rather than a cold Winter - I had a quick look through my records. They are not to the official standard, but they do allow a comparison of "like with like". The observatory location is in my "sig" at the end of the post. There were *three* winters at this site in the 1980s which set records the current winter has not even approached. 1982 - A real Siberian blast arrived in January, and overnight 13/14 January our thermometer sunk to -14C, and that with a significant easterly blowing so it was not just a radiation night over snow. It hasn't been below -11C since. We also had 21 days with snow lying that winter - this year we have had 12 (3 in December and 9 consecutive in January). 1985 - From 13-18 January the temperature remained below freezing, a record of six consecutive "Ice Days". We have had no more than two together at a time this winter. 1985 had 12 "Ice Days" and no less than 104 days with frost in the year between December 1 1984 and November 30 1985. 1987 - On 12 January the temperature did not rise above -6.7C. No Ice Day since has even got near this, the maximum is normally about -2C or -3C at worst. For "afters" we had 18cm of level snow down on 19 March that year. And in the very first month of my records, January 1980, the temperature only rose above freezing on 6 of the 31 days. This year was actually close, only 8 days in January with no frost. |I guess you mean "there was no frost on 6 of the 31 days" ; do you |mean 1979? I don't remember January 1980 (in north-west Sussex) being |at all remarkable - to be honest I remember very little about it at |all, cold or mild, wet or dry - but I'm pretty sure there was no |snow. | I spent January 1979 at the University of Reading. But there is one error in my original post. I have looked again at my records and we had a run of four consecutive "Ice Days" in January 2010, although one of them was marginal. -- - Yokel - "Yokel" posts via a spam-trap account which is not read. |
#6
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"John Hall" wrote in message
... | In article , | Yokel writes: | snip interesting stuff | And in the very first month of my records, January 1980, the temperature | only rose above freezing on 6 of the 31 days. This year was actually close, | only 8 days in January with no frost. | | That confuses me somewhat. Do you really mean that the minima were above | freezing on only 6 days, rather than the maxima? | | I must admit that I'd forgotten all about that month, although a CET of | 2.3 indicates that it was quite chilly. I suppose it just came as a bit | of an anticlimax compared with a year earlier. I have dug out ny weather diary for 1980... And there it is - January 1980, 25 days with frost. Apologies for the phrasing - it should have been "did not fall below freezing..." so 25 frost days, not 25 "Ice days". Looking at the individual observations suggests that, at least in this part of the world, the situation was not dissimilar to the January just gone, with a cold NE or E to start the month (though not as cold as this year - there were actually no"Ice days" at all in 1980) followed by cold NW or W with polar or arctic maritime air allowing night frosts even with the westerlies. -- - Yokel - "Yokel" posts via a spam-trap account which is not read. |
#7
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On Feb 2, 11:20*pm, "Yokel" wrote:
"John Hall" wrote in message ... | In article ,| Yokel writes: | snip interesting stuff | And in the very first month of my records, January 1980, the temperature | only rose above freezing on 6 of the 31 days. *This year was actually close, | only 8 days in January with no frost. | | That confuses me somewhat. Do you really mean that the minima were above | freezing on only 6 days, rather than the maxima? | | I must admit that I'd forgotten all about that month, although a CET of | 2.3 indicates that it was quite chilly. I suppose it just came as a bit | of an anticlimax compared with a year earlier. I have dug out ny weather diary for 1980... And there it is - January 1980, 25 days with frost. *Apologies for the phrasing - it should have been "did not fall below freezing..." so 25 frost days, not 25 "Ice days". Looking at the individual observations suggests that, at least in this part of the world, the situation was not dissimilar to the January just gone, with a cold NE or E to start the month (though not as cold as this year - there were actually no"Ice days" at all in 1980) followed by cold NW or W with polar or arctic maritime air allowing night frosts even with the westerlies. -- * * * * * * * * - Yokel - "Yokel" posts via a spam-trap account which is not read. Looking at wetterzentrale.de charts suggests that Jan 1980 was mostly cold 1st-19th, with a brief mild interlude around the 3rd-5th, and then mostly mild for the rest of the month - with a brief cold interlude around the 26th. Doesn't sound too extreme - but - that would probably make it very cold compared to most of the Januaries since 1988. Strange I can't remember anything about it - but then perhaps it was near-normal for the late 70s and the 80s, so didn't stand out. The charts suggest snow was unlikely, which would fit in with my lack of memory of snow that month. Nick |
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