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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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Here is a summary of the latest NWP output for noon on Friday. Issued 0601z,
19/04/04. ECMWF: http://www.wetterzentrale.de/pics/Recm1201.html High pressure covers England and Wales, bringing SW'lies further north. The high builds over the UK at T+144, merging with a large high to the north of Scandinavia. Light winds cover the whole of the UK, followed by light easterlies, southerlies and westerlies at T+168 as the high continues to build over the UK. MetO: http://www.wetterzentrale.de/pics/Rukm1201.html The Met Office run shows high pressure over the Netherlands, Belgium and the southern North Sea. SW'lies and WSW'lies cover the UK, followed by SSW'lies for all at T+144 as the high moves slowly eastwards. GFS: http://64.246.48.81/pics/Rtavn1201.gif A ridge covers the North Sea, from a high over Finland. SSW'lies are the result for most of the UK, lightest over southern areas of the UK. 850hPa temperatures vary from +3C over SE England to +6C across Scotland and Northern Ireland. The ridge builds over the UK at T+144, with a mixture of southerlies and easterlies; much the same is true at T+168 as the high recentres over southern Scandinavia. The high declines slightly on day 8, with the UK still under a ridge, before the high continues moving SW'wards to cover the UK on day 9. Day 10 sees the high sink SW'wards, with westerlies and northerlies for the UK. GEM: http://www.meteocentre.com/models/glb00_120.html The Canadian run shows moderate SW'lies over the UK, with a low south of Iceland and high pressure over France and Germany. The winds become WSW'lies at T+144 as the high builds. JMA: http://www.wetterzentrale.de/pics/Rjma1201.html SW'lies cover the UK, with high pressure over France. 850hPa temperatures range from +1C over the Western Isles to +8C over much of England. The SW'lies continue at T+144 and for Scotland and Ireland at T+168. By then, a weak ridge covers England and Wales, bringing westerlies there. A ridge affects the UK on day 8, with westerlies for all. In summary, the models continue to show warmer conditions for the weekend, although they're split as the the position of the high. The GFS and ECM show the Scandinavian High having a large effect on the UK, keeping many areas settled, whereas the MetO keeps the high to the SE, with less settled weather for northern and western areas. As ever, more runs are needed. |
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