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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
December 15th 06, 10:04 AM
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[OB]Whipsnade, Beds, Fri 15 Dec 2006
0920z SW F4 28km 2Cu014 7Sc030 8As120 10.3/07.0 1020.0
RMK: This is getting boring 09-09 Tx 11.8 Tn 9.5 Tg 8.0 RR nil sss nil Philip Eden Whipsnade 214m |
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#2
December 15th 06, 01:20 PM
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[OB]Whipsnade, Beds, Fri 15 Dec 2006
"Philip Eden" philipATweatherHYPHENukDOTcom wrote : 0920z SW F4 28km 2Cu014 7Sc030 8As120 10.3/07.0 1020.0 RMK: This is getting boring 1320z SW F5 35km 1Cu014 7Sc035 8As100 10.4/07.3 1018.2 RMK: Light levels seem to be lower now than they were 3h ago. Philip Eden Whipsnade 214m |
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#3
December 15th 06, 01:55 PM
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Whipsnade, Beds, Fri 15 Dec 2006
On Dec 15, 1:20 pm, "Philip Eden" philipATweatherHYPHENukDOTcom wrote: "Philip Eden" philipATweatherHYPHENukDOTcom wrote : 0920z SW F4 28km 2Cu014 7Sc030 8As120 10.3/07.0 1020.0 RMK: This is getting boring1320z SW F5 35km 1Cu014 7Sc035 8As100 10.4/07.3 1018.2 RMK: Light levels seem to be lower now than they were 3h ago. Philip Eden Whipsnade 214m- Hide quoted text -- Show quoted text - Yes, very gloomy here too. I pointed my camera out of the window and read the exposure - about 1/15th at f/4.7, 400 ASA. This is just about 1% of the level expected on a sunny day. The light level is: Square of f/number divided by exposure divided by ASA rating This gives a figure of around 40 for a sunny day. Today's figure is 0.4. I have known values lower than 0.05 during "daytime darkness" in thunderstorms. The eye is a very insensitive light meter, a drop of 50% in light level not being really obvious. Tudor Hughes, Warlingham, Surrey. |
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#4
December 15th 06, 06:46 PM
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[OB]Whipsnade, Beds, Fri 15 Dec 2006
"Philip Eden" philipATweatherHYPHENukDOTcom wrote : "Philip Eden" philipATweatherHYPHENukDOTcom wrote : 0920z SW F4 28km 2Cu014 7Sc030 8As120 10.3/07.0 1020.0 RMK: This is getting boring 1320z SW F5 35km 1Cu014 7Sc035 8As100 10.4/07.3 1018.2 RMK: Light levels seem to be lower now than they were 3h ago. 1820z SSW F5 25km 2Cu014 6Sc035 8As100 10.2/06.9 1015.7 RMK: It actually brightened up for a time during the afternoon with the As thinning to Ac and Ci. No ppn here yet. 09-18: 10.7 RR nil sss(00-18) nil Philip Eden Whipsnade 214m |
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#5
December 15th 06, 10:41 PM
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[OB]Whipsnade, Beds, Fri 15 Dec 2006
"Philip Eden" philipATweatherHYPHENukDOTcom wrote : "Philip Eden" philipATweatherHYPHENukDOTcom wrote : "Philip Eden" philipATweatherHYPHENukDOTcom wrote : 0920z SW F4 28km 2Cu014 7Sc030 8As120 10.3/07.0 1020.0 RMK: This is getting boring 1320z SW F5 35km 1Cu014 7Sc035 8As100 10.4/07.3 1018.2 RMK: Light levels seem to be lower now than they were 3h ago. 1820z SSW F5 25km 2Cu014 6Sc035 8As100 10.2/06.9 1015.7 RMK: It actually brightened up for a time during the afternoon with the As thinning to Ac and Ci. No ppn here yet. 2220z SSW F4-5 10km -DZ 7St010 8Sc030 10.6/09.3 1014.2 RMK: Cont sl drizzle from approx 21z. Hard surfaces well dampened now. Philip Eden Whipsnade 214m |
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