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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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Next month it looks as though I won't be posting on Sunday mornings - more
details available he http://www.theweatheroutlook.com/wea...TOPIC_ID=31085 Here is a summary of the latest NWP output for noon on Friday. Issued 0551z, 27/09/04. The models are very mixed today, with everything from highs to lows in the charts. The best that can be said is that areas further south and east will probably escape the worst of any unsettled weather, although even that's in doubt (JMA for T+120 shows a low over the Channel, for example). More than ever, more runs are needed. ECMWF: http://64.246.48.81/pics/Recm1201.gif A deep low lies to the NW, with SW'lies across the UK. SW'lies persist at T+144, although a ridge means the winds are lighter over England and Wales. A deep secondary low covers the Western Isles at T+168, bringing strong to gale force SW'lies across the UK. MetO: http://www.wetterzentrale.de/pics/Rukm1201.html Highs lie to the NE and SW of the UK, with southerlies for much of the British Isles. A trough covers Ireland, bringing SSW'les to Northern Ireland. The trough moves eastwards at T+144, allowing WSW'lies and SW'lies to sweep across the UK. GFS: http://64.246.48.81/pics/Rtavn1201.gif Scandinavia is covered by high pressure, as is Biscay. The UK lies between the two, with southerlies for Scotland, SW'lies for Wales and Northern Ireland and NW'lies for much of England. 850hPa temperatures vary from +2C over NE Scotland to +6C over Northern Ireland. SW'lies affect the UK at T+144 as the Biscay and Scandinavian Highs merge. The winds become NW'lies at T+168 as a trough moves eastwards over the UK, followed by northerlies on day 8 as the trough deepens to become a low over the Netherlands. The low fills in situ on day 9 while a ridge moves over Scotland and Ireland; this leads to NE'lies and northerlies for England and Wales. High pressure builds strongly over Scandinavia on day 10, with easterlies and ENE'lies over the UK. GEM: http://www.meteocentre.com/models/glb00_120.html The UK lies under SW'lies, due to a low west of Iceland and high pressure extending southwards from Scandinavia and westwards from France to Biscay. 850hPa temperatures vary from +4C over Northern Ireland to +7C over Cornwall. The UK still lies under SW'lies at T+144, although they're somewhat lighter as pressure rises. JMA: http://www.wetterzentrale.de/pics/Rjma1201.html The Japanese run shows a small low over the English Channel and variable winds for much of the UK. 850hPa temperatures vary from +3C over SW England to +5C across Scotland. Winds remain light at T+144 due to a col over the UK, but by T+168 they become westerlies and NW'lies as high pressure builds to the SW. Day 8 sees SW'lies for Scotland and Northern Ireland, with high pressure bringing light winds elsewhere. |
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That is nice of you to mention this Darren. We consider ourselves grateful
to have your service on this newsgroup. As always it is very much appreciated:-) Regards, Gavin. "Darren Prescott" wrote in message ... Next month it looks as though I won't be posting on Sunday mornings - more details available he http://www.theweatheroutlook.com/wea...TOPIC_ID=31085 Here is a summary of the latest NWP output for noon on Friday. Issued 0551z, 27/09/04. The models are very mixed today, with everything from highs to lows in the charts. The best that can be said is that areas further south and east will probably escape the worst of any unsettled weather, although even that's in doubt (JMA for T+120 shows a low over the Channel, for example). More than ever, more runs are needed. ECMWF: http://64.246.48.81/pics/Recm1201.gif A deep low lies to the NW, with SW'lies across the UK. SW'lies persist at T+144, although a ridge means the winds are lighter over England and Wales. A deep secondary low covers the Western Isles at T+168, bringing strong to gale force SW'lies across the UK. MetO: http://www.wetterzentrale.de/pics/Rukm1201.html Highs lie to the NE and SW of the UK, with southerlies for much of the British Isles. A trough covers Ireland, bringing SSW'les to Northern Ireland. The trough moves eastwards at T+144, allowing WSW'lies and SW'lies to sweep across the UK. GFS: http://64.246.48.81/pics/Rtavn1201.gif Scandinavia is covered by high pressure, as is Biscay. The UK lies between the two, with southerlies for Scotland, SW'lies for Wales and Northern Ireland and NW'lies for much of England. 850hPa temperatures vary from +2C over NE Scotland to +6C over Northern Ireland. SW'lies affect the UK at T+144 as the Biscay and Scandinavian Highs merge. The winds become NW'lies at T+168 as a trough moves eastwards over the UK, followed by northerlies on day 8 as the trough deepens to become a low over the Netherlands. The low fills in situ on day 9 while a ridge moves over Scotland and Ireland; this leads to NE'lies and northerlies for England and Wales. High pressure builds strongly over Scandinavia on day 10, with easterlies and ENE'lies over the UK. GEM: http://www.meteocentre.com/models/glb00_120.html The UK lies under SW'lies, due to a low west of Iceland and high pressure extending southwards from Scandinavia and westwards from France to Biscay. 850hPa temperatures vary from +4C over Northern Ireland to +7C over Cornwall. The UK still lies under SW'lies at T+144, although they're somewhat lighter as pressure rises. JMA: http://www.wetterzentrale.de/pics/Rjma1201.html The Japanese run shows a small low over the English Channel and variable winds for much of the UK. 850hPa temperatures vary from +3C over SW England to +5C across Scotland. Winds remain light at T+144 due to a col over the UK, but by T+168 they become westerlies and NW'lies as high pressure builds to the SW. Day 8 sees SW'lies for Scotland and Northern Ireland, with high pressure bringing light winds elsewhere. |
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