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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
June 17th 05, 05:57 PM
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Thunder on Sunday
How likely in Sheffield?
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#2
June 17th 05, 07:21 PM
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Thunder on Sunday
If this comes off it's going to get a tad scary.... thunder almost
certain along with hail, gusty winds, torrential rain, tornadoes.....!! http://www.wetterzentrale.de/pics/Rtavn5411.html Les C wrote: How likely in Sheffield? -- Les Crossan, Wallsend, Tyne & Wear 54.95N 1.5W Home of the Wallsend StormCam and the Backup USW FAQ - www.uksevereweather.org.uk |
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#3
June 17th 05, 07:41 PM
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Thunder on Sunday
"Les Crossan" wrote in message . uk... If this comes off it's going to get a tad scary.... thunder almost certain along with hail, gusty winds, torrential rain, tornadoes.....!! Cape/Lifted Index. Am I right in thinking that this is in simplistic terms, a measure of atmospheric instability? Col -- Bolton, Lancashire. 160m asl. http://www.reddwarfer.btinternet.co.uk http://www.reddwarfer.btinternet.co....rPictures.html |
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#4
June 17th 05, 07:48 PM
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Thunder on Sunday
Col wrote:
"Les Crossan" wrote in message . uk... If this comes off it's going to get a tad scary.... thunder almost certain along with hail, gusty winds, torrential rain, tornadoes.....!! Cape/Lifted Index. Am I right in thinking that this is in simplistic terms, a measure of atmospheric instability? Col A bit more about it here... http://homepage.ntlworld.com/booty.w...opics.htm#CAPE -- Keith (Southend) 'Weather Home & Abroad' http://www.southendweather.net |
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#5
June 17th 05, 08:09 PM
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Thunder on Sunday
As CAPE goes up the chances for thunderstorms increase. As LI goes down
the chances of severe weather increase. There are other factors involved (moisture, temperature, topography, whole - atmosphere) but CAPE that high and LI that low are not common in the UK. This is from Bernhard Oker's website: LIFTED INDEX: 0 Thunderstorms unlikely 0 - -2 Thunderstorms possible - trigger needed -3 - -5 Thunderstorms probable -5 - -7 Strong/severe thunderstorms. Tornadoes possible -7 - -9 Move to Alaska -9 Yikes CAPE: 300 Weak convection (showers) 300-1000 Weak thunderstorms 1000-2500 Moderate thunderstorms 2500-3000 Strong thunderstorms 3000+ Very Strong thunderstorms Col wrote: "Les Crossan" wrote in message . uk... If this comes off it's going to get a tad scary.... thunder almost certain along with hail, gusty winds, torrential rain, tornadoes.....!! Cape/Lifted Index. Am I right in thinking that this is in simplistic terms, a measure of atmospheric instability? Col -- Les Crossan, Wallsend, Tyne & Wear 54.95N 1.5W Home of the Wallsend StormCam and the Backup USW FAQ - www.uksevereweather.org.uk |
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#6
June 17th 05, 08:56 PM
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Thunder on Sunday
"Les Crossan" wrote in message . uk... As CAPE goes up the chances for thunderstorms increase. As LI goes down the chances of severe weather increase. There are other factors involved (moisture, temperature, topography, whole - atmosphere) but CAPE that high and LI that low are not common in the UK. This is from Bernhard Oker's website: LIFTED INDEX: 0 Thunderstorms unlikely 0 - -2 Thunderstorms possible - trigger needed -3 - -5 Thunderstorms probable -5 - -7 Strong/severe thunderstorms. Tornadoes possible -7 - -9 Move to Alaska -9 Yikes CAPE: 300 Weak convection (showers) 300-1000 Weak thunderstorms 1000-2500 Moderate thunderstorms 2500-3000 Strong thunderstorms 3000+ Very Strong thunderstorms Col wrote: "Les Crossan" wrote in message . uk... If this comes off it's going to get a tad scary.... thunder almost certain along with hail, gusty winds, torrential rain, tornadoes.....!! Cape/Lifted Index. Am I right in thinking that this is in simplistic terms, a measure of atmospheric instability? Col -- Les Crossan, Wallsend, Tyne & Wear 54.95N 1.5W Home of the Wallsend StormCam and the Backup USW FAQ - www.uksevereweather.org.uk So what is Sheffield on the LIFTED INDEX:? |
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#7
June 17th 05, 09:13 PM
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Thunder on Sunday
C wrote:
"Les Crossan" wrote in message . uk... As CAPE goes up the chances for thunderstorms increase. As LI goes down the chances of severe weather increase. There are other factors involved (moisture, temperature, topography, whole - atmosphere) but CAPE that high and LI that low are not common in the UK. This is from Bernhard Oker's website: LIFTED INDEX: 0 Thunderstorms unlikely 0 - -2 Thunderstorms possible - trigger needed -3 - -5 Thunderstorms probable -5 - -7 Strong/severe thunderstorms. Tornadoes possible -7 - -9 Move to Alaska -9 Yikes CAPE: 300 Weak convection (showers) 300-1000 Weak thunderstorms 1000-2500 Moderate thunderstorms 2500-3000 Strong thunderstorms 3000+ Very Strong thunderstorms Col wrote: "Les Crossan" wrote in message . co.uk... If this comes off it's going to get a tad scary.... thunder almost certain along with hail, gusty winds, torrential rain, tornadoes.....!! Cape/Lifted Index. Am I right in thinking that this is in simplistic terms, a measure of atmospheric instability? Col -- Les Crossan, Wallsend, Tyne & Wear 54.95N 1.5W Home of the Wallsend StormCam and the Backup USW FAQ - www.uksevereweather.org.uk So what is Sheffield on the LIFTED INDEX:? minus 6 Sunday -- Keith (Southend) 'Weather Home & Abroad' http://www.southendweather.net |
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#8
June 17th 05, 09:28 PM
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Thunder on Sunday
"Les Crossan" wrote in message . uk... As CAPE goes up the chances for thunderstorms increase. As LI goes down the chances of severe weather increase. There are other factors involved (moisture, temperature, topography, whole - atmosphere) but CAPE that high and LI that low are not common in the UK. This is from Bernhard Oker's website: LIFTED INDEX: 0 Thunderstorms unlikely 0 - -2 Thunderstorms possible - trigger needed -3 - -5 Thunderstorms probable -5 - -7 Strong/severe thunderstorms. Tornadoes possible -7 - -9 Move to Alaska -9 Yikes CAPE: 300 Weak convection (showers) 300-1000 Weak thunderstorms 1000-2500 Moderate thunderstorms 2500-3000 Strong thunderstorms 3000+ Very Strong thunderstorms Thanks to you and Keith for the info! Col -- Bolton, Lancashire. 160m asl. http://www.reddwarfer.btinternet.co.uk http://www.reddwarfer.btinternet.co....rPictures.html |
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#9
June 18th 05, 05:39 AM
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Thunder on Sunday
Bloody hell I hate jargon.
It'll never replace birds perched on rooftops and the times of the phases for me. Damned Bee Bloody C! -- Posted via Mailgate.ORG Server - http://www.Mailgate.ORG |
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