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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 0611z,
16/08/04. The models are mixed today, with initial unsettled conditions being replaced by a (possibly brief) settled interlude - the GFS in particular is keen to return to unsettled weather after the weekend. ECMWF: http://64.246.48.81/pics/Recm1201.gif A trough covers the UK, bringing northerlies for Scotland and Northern Ireland. Elsewhere, winds are SW'lies, but by T+144 northerlies cover the whole of the UK as the trough moves away eastwards. Light and variable winds move over much of the UK at T+168 due to a ridge. MetO: http://www.wetterzentrale.de/pics/Rukm1201.html The UK is affected by northerlies and NW'lies, due to a trough to the east. By T+144 the winds become lighter WNW'lies and NNW'lies, with a weak ridge over England and Wales. GFS: http://64.246.48.81/pics/Rtavn1201.gif As with the ECM run, the UK lies under a trough. This time, winds are NNW'lies for much of the UK, with the exception of England, which lies under westerlies. 850hPa temperatures range from +2C over northern Scotland to +7C over SE England. A weak ridge brings southerlies and SW'lies at T+144, before a new low deepens over Northern Ireland on day 7. The low brings strong SW'lies for England and Wales, with SW'lies and ESE'lies for Scotland. By day 8 the low moves away to the NW, leaving the UK under strong northerlies and NW'lies. The winds ease somewhat on day 9 as a ridge builds over England and Wales, followed by stronger westerleis on day 10 as a low moves ESE'wards over Iceland. GEM: http://www.meteocentre.com/models/glb00_120.html The UK mainly lies under northerlies, with a trough to the east and a secondary low to the SW. 850hPa temperatures vary from +1C over NW Scotland to +6C over southern England. The secondary low deepens over SW England at T+144, bringing easterlies and NE'lies for the UK. JMA: http://www.wetterzentrale.de/pics/Rjma1201.html England and Wales lie under SW'lies, while Scotland and Northern Ireland are affected by northerlies, all due to a trough over northern England. 850hPa temperatures vary from +1C over northern Scotland to +7C widely over England and Wales. Northerlies affect the whole of the UK at T+144, before a ridge brings light winds for all at T+168. The winds become light NW'lies for day 8, with a ridge persisting over the UK. |
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