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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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Here is a summary of the NWP output for noon on Sunday.
Issued 0459z, 17/05/11 The start of the new week will see WSW'lies or westerlies across the UK, with showery conditions for the north and west especially. Low pressure will then approach from the west, with southerlies in advance and then westerlies as a trough moves NE'wards. It may be the case that any rain from the trough fizzles out as it reaches the SE. Analysis and evolution to T+120 via GFS SW'lies cover the UK, with a deep low to the NW. Tomorrow a trough moves eastwards, with westerlies across the UK (albeit light in the south). On Friday there are SW'lies for most, although the SE third of England lies under a col. Much the same is true on Saturday. T+120 synopsis http://www.wetterzentrale.de/wz/pics/Rtavn12014.png http://www.wetterzentrale.de/wz/pics/Rtavn1201.png http://www.wetterzentrale.de/wz/pics/Rukm1201.gif http://www.wetterzentrale.de/wz/pics/Recm1201.gif http://www.wetterzentrale.de/wz/pics/Rjma1201.gif The jetstream chart shows a strong westerly flow over the UK with a zonal flow upstream. At the 500hPa level there's also a strong westerly flow. The other runs also show the jetstream over the UK, with a strong WSW'ly or westerly flow at 500hPa. At the surface the runs all show WSW'lies, with a ridge to the south and a low to the north. Evolution to T+168 Days 6 and 7 with ECM show southerlies followed by westerlies as a deep low moves NE'wards to the north of Scotland. A trough covers the UK on day 6 with GFS, leading to strong westerlies. On day 7 there are lighter southerlies ahead of a deepening low to the west. Looking further afield A ridge covers the UK on day 8. On day 9 it settles over northern Scotland, bringing NE'lies for most. Day 10 sees easterlies and ESE'lies as the ridge becomes a high to the NE. GFS brings low pressure over the UK on day 8, followed by NW'lies as a ridge builds from the west on day 9. On day 10 a ridge covers England and Wales, leading to SW'lies elsewhere. Ensemble analysis http://www.meteociel.com/cartes_obs/...&ville=Londres The GEFS shows temperatures close to or slightly above average. ECM ensembles http://www.meteogroup.co.uk/meteo/ep...tt6-london.gif ECM also shows temperatures a little above average over the coming week. |
#2
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On May 18, 6:01*am, "Darren Prescott" wrote:
Here is a summary of the NWP output for noon on Sunday. Issued 0459z, 17/05/11 The start of the new week will see WSW'lies or westerlies across the UK, with showery conditions for the north and west especially. Low pressure will then approach from the west, with southerlies in advance and then westerlies as a trough moves NE'wards. It may be the case that any rain from the trough fizzles out as it reaches the SE. Analysis and evolution to T+120 via GFS SW'lies cover the UK, with a deep low to the NW. Tomorrow a trough moves eastwards, with westerlies across the UK (albeit light in the south). On Friday there are SW'lies for most, although the SE third of England lies under a col. Much the same is true on Saturday. T+120 synopsishttp://www.wetterzentrale.de/wz/pics/Rtavn12014.pnghttp://www.wetterzentrale.de/wz/pics/Rtavn1201.pnghttp://www.wetterzentrale.de/wz/pics/Rukm1201.gifhttp://www.wetterzentrale.de/wz/pics/Recm1201.gifhttp://www..wetterzentrale.de/wz/pics/Rjma1201.gif The jetstream chart shows a strong westerly flow over the UK with a zonal flow upstream. At the 500hPa level there's also a strong westerly flow. The other runs also show the jetstream over the UK, with a strong WSW'ly or westerly flow at 500hPa. As I was saying yesterday, this is a hiatus in the blocking. The jet is not "well to our north" and this pattern does not resemble a blocking pattern. If anyone says that; don't believe them. *)) In a few days time, it may well change, but for the time being, the blocking is suspended. At the surface the runs all show WSW'lies, with a ridge to the south and a low to the north. Evolution to T+168 Days 6 and 7 with ECM show southerlies followed by westerlies as a deep low moves NE'wards to the north of Scotland. A trough covers the UK on day 6 with GFS, leading to strong westerlies. On day 7 there are lighter southerlies ahead of a deepening low to the west. Looking further afield A ridge covers the UK on day 8. On day 9 it settles over northern Scotland, bringing NE'lies for most. Day 10 sees easterlies and ESE'lies as the ridge becomes a high to the NE. GFS brings low pressure over the UK on day 8, followed by NW'lies as a ridge builds from the west on day 9. On day 10 a ridge covers England and Wales, leading to SW'lies elsewhere. Ensemble analysishttp://www.meteociel.com/cartes_obs/gens_display.php?ext=1&x=306&y=14... The GEFS shows temperatures close to or slightly above average. ECM ensembleshttp://www.meteogroup.co.uk/meteo/eps/ensemble-tt6-london.gif ECM also shows temperatures a little above average over the coming week. |
#3
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oh your qualified in dynamics now?
i guess most of england and wales have been influenced by by persistent zonal condtions since march. bull**** where did you study ladbrokes? william hill college? is that where your anti gravity rosby came from? waste of space On 18/05/2011 2:07 PM, Dawlish wrote: As I was saying yesterday, this is a hiatus in the blocking. The jet is not "well to our north" and this pattern does not resemble a blocking pattern. If anyone says that; don't believe them. *)) In a few days time, it may well change, but for the time being, the blocking is suspended. |
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