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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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1500Z: 08019KT 30KM 2AC100 3AS170 7CS200 13.3/5.7 QFF 1018.6 irregular
slow fall SYNOP: 42980 70819 10133 20057 40186 56001 84078 333 82360 83467 87270 90710 91130= Beaufort letters (1400-1500Z): c Medium and upper cloud layers have thinned considerably during the afternoon, enough for the sun to cast distinct shadows. More definite blue sky is visible away to the north. A curious pressure jump of 3mb occurred inside one hour this morning, coincident with the passage of an equally curious arc of Ac castellanus from the SE and wind increase (gust to 39kt). About half a dozen large spots of rain fell from this feature, otherwise a dry day. RH 60%. Good visibility. Max temp so far today 13.3 Nigel (Niton, Isle of Wight) 101m amsl |
#2
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"Nigel Paice" wrote in message
... 1500Z: 08019KT 30KM 2AC100 3AS170 7CS200 13.3/5.7 QFF 1018.6 irregular slow fall SYNOP: 42980 70819 10133 20057 40186 56001 84078 333 82360 83467 87270 90710 91130= Beaufort letters (1400-1500Z): c Medium and upper cloud layers have thinned considerably during the afternoon, enough for the sun to cast distinct shadows. More definite blue sky is visible away to the north. A curious pressure jump of 3mb occurred inside one hour this morning, coincident with the passage of an equally curious arc of Ac castellanus from the SE and wind increase (gust to 39kt). About half a dozen large spots of rain fell from this feature, otherwise a dry day. RH 60%. Good visibility. Max temp so far today 13.3 Nigel (Niton, Isle of Wight) 101m amsl Hello Nigel. Your post about a curious pressure jump reminded me that we also had an interesting jump (more like a surge) yesterday evening. Not sure if there was any cloud changes associated with it. There is a link to my AWS graphs for yesterday here, scroll down for the pressure, and click on thumbnails to enlarge. http://www.woksat.info/cs/ejsgr200504.gif -- Bernard Burton Weather data and satellite images at: www.woksat.info/wwp.html |
#3
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On 05/05/2020 16:31, Bernard Burton wrote:
"Nigel Paice" wrote in message ... 1500Z: 08019KT 30KM 2AC100 3AS170 7CS200 13.3/5.7 QFF 1018.6 irregular slow fall SYNOP: 42980 70819 10133 20057 40186 56001 84078 333 82360 83467 87270 90710 91130= Beaufort letters (1400-1500Z): c Medium and upper cloud layers have thinned considerably during the afternoon, enough for the sun to cast distinct shadows. More definite blue sky is visible away to the north. A curious pressure jump of 3mb occurred inside one hour this morning, coincident with the passage of an equally curious arc of Ac castellanus from the SE and wind increase (gust to 39kt). About half a dozen large spots of rain fell from this feature, otherwise a dry day. RH 60%. Good visibility. Max temp so far today 13.3 Nigel (Niton, Isle of Wight) 101m amsl Hello Nigel. Your post about a curious pressure jump reminded me that we also had an interesting jump (more like a surge) yesterday evening. Not sure if there was any cloud changes associated with it. There is a link to my AWS graphs for yesterday here, scroll down for the pressure, and click on thumbnails to enlarge. http://www.woksat.info/cs/ejsgr200504.gif Hello Bernard, That's fascinating; a similar large pressure rise, yet more than 12 hours apart which would suggest in all probability, that the two events were purely coincidental and not linked to the same cause. |
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