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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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Despite intermittent sunshine and no really thick cloud, it's felt very
cold indeed for July down here (Southampton) today. Mid-summer is normally fairly temperate here even in changeable spells of weather - the last cold blast of the spring normally occurring sometime in June and the first of Autumn normally late August. Nick |
#2
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Only made it up to 19.1C here today despite it being very sunny, that wind
had a definite 'chilly' feel to it. A big change in temperature from yesterday which was gloriously warm, sunny with hardly any wind. Currently @ 17:15, 18.5C, RH 51%, DP 8.1C, 1011.4 mb, wind WNW 11.0 mph. ________________________ Nick G Thorverton, Exe Valley, Devon 50 m amsl wrote in message ups.com... Despite intermittent sunshine and no really thick cloud, it's felt very cold indeed for July down here (Southampton) today. Mid-summer is normally fairly temperate here even in changeable spells of weather - the last cold blast of the spring normally occurring sometime in June and the first of Autumn normally late August. Nick |
#3
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#5
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In uk.sci.weather on Mon, 4 Jul 2005 at 17:28:00, Brian Wakem wrote :
wrote: Despite intermittent sunshine and no really thick cloud, it's felt very cold indeed for July down here (Southampton) today. Mid-summer is normally fairly temperate here even in changeable spells of weather - the last cold blast of the spring normally occurring sometime in June and the first of Autumn normally late August. Currently 13.4C in Fleet, Hampshire, and raining too. It really does feel cold. Yesterday's high here was just 14.7°C, my 4th coolest July day in 23 years. -- Paul Hyett, Cheltenham |
#6
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Must be around 6 or 7 degrees below normal, equivalent to freezing in
January or single figures in October? What's strange is that such an ordinary looking west or northwesterly airmass should produce such low temperatures - normally to produce temperatures significantly below normal, a strong blast from the north or northeast or (in winter only) east or southeast is required. Or fog... NIck |
#7
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#8
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Must be around 6 or 7 degrees below normal, equivalent to freezing in
January or single figures in October? What's strange is that such an ordinary looking west or northwesterly airmass should produce such low temperatures - normally to produce temperatures significantly below normal, a strong blast from the north or northeast or (in winter only) east or southeast is required. Or fog... NIck The difference is that in summer the ocean to the west is a source of relatively cold air while in winter it is a source of relatively warm air. The ocean surface temperature to the west of the British Isles varies by only a few degrees between summer and winter. Norman. (delete "thisbit" twice to e-mail) -- Not really quite right. The sea temperature off Cornwall at the moment is 16 degrees. The average annual range in recent years being 10 degres (8 - 18). The warmest places yesterday were in Devon & Cornwall (south coast areas 18-20 degrees, 18.7 here in Penzance). So only 1-2 degrees below normal here. If anything the nearby sea had a slight warming affect on the cold air mass, the largest negative anomalies generally being inland. Graham |
#9
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In message , Graham Easterling
writes Must be around 6 or 7 degrees below normal, equivalent to freezing in January or single figures in October? What's strange is that such an ordinary looking west or northwesterly airmass should produce such low temperatures - normally to produce temperatures significantly below normal, a strong blast from the north or northeast or (in winter only) east or southeast is required. Or fog... NIck The difference is that in summer the ocean to the west is a source of relatively cold air while in winter it is a source of relatively warm air. The ocean surface temperature to the west of the British Isles varies by only a few degrees between summer and winter. Norman. (delete "thisbit" twice to e-mail) -- Not really quite right. The sea temperature off Cornwall at the moment is 16 degrees. The average annual range in recent years being 10 degres (8 - 18). The warmest places yesterday were in Devon & Cornwall (south coast areas 18-20 degrees, 18.7 here in Penzance). So only 1-2 degrees below normal here. If anything the nearby sea had a slight warming affect on the cold air mass, the largest negative anomalies generally being inland. Graham I was talking about the ocean surface temperature i.e. the surface temperature of the water beyond the continental shelf edge. I agree that the surface temperature of the inshore waters can be very different and the summer/winter variation is very much greater. The characteristics of the maritime airmasses are determined partly by the broadscale ocean surface temperatures and partly by airmass origin although, as you say, there can be local modification resulting from inshore sea surface temperatures. Norman. (delete "thisbit" twice to e-mail) -- Norman Lynagh Weather Consultancy Chalfont St Giles 85m a.s.l. England |
#10
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![]() "Paul Hyett" wrote in message ... In uk.sci.weather on Mon, 4 Jul 2005 at 17:28:00, Brian Wakem wrote : wrote: Despite intermittent sunshine and no really thick cloud, it's felt very cold indeed for July down here (Southampton) today. Mid-summer is normally fairly temperate here even in changeable spells of weather - the last cold blast of the spring normally occurring sometime in June and the first of Autumn normally late August. Currently 13.4C in Fleet, Hampshire, and raining too. It really does feel cold. Yesterday's high here was just 14.7°C, my 4th coolest July day in 23 years. -- Paul Hyett, Cheltenham Currently 16C here in S Cambs and depressingly grey. A very unpleasant day. Gavin. |
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