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Old October 7th 03, 07:56 PM posted to uk.sci.weather
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Default 12Z Model Summary - Tuesday 07th October 2003

Charts analysed are for T+96 hours - 12Z Saturday 11th October 2003
unless stated.

UKMetO:
SLP: http://www.wetterzentrale.com/pics/Rukm961.html
Low pressure (995mb) lies over Eastern Scandinavia, with another low
(985mb) close to the south of Greenland. High pressure (1045mb) lies
well to the northeast over Siberia, and sends a ridges southwestwards
across Southern Europe and into the Atlantic, with part of this ridge
ridging into the UK. Winds across the UK are moderate northwesterlies
in the north and east, becoming light in the south and west. Many
parts will become mostly fine and dry, with showers confined to the
northeast. Temperatures will be close to normal in many parts. Beyond
this pressure builds over the UK and settles over the North Sea and
Scandinavia as we head into next week. Therefore, the UK lies under
warmer south/southeasterly winds with a good deal of fine weather for
most parts.


GFS:
SLP: http://www.wetterzentrale.com/pics/Rtavn961.html
850hPa Temperatures: http://www.wetterzentrale.com/pics/Rtavn962.html
2m Temperatures: http://www.wetterzentrale.com/pics/Rtavn965.html
Low pressure (995mb) lies over Northern Scandinavia, with another low
(985mb) lying well to the west of Scotland in the Atlantic. High
pressure (1040mb) lies well to the northeast over Siberia, and ridges
strongly southwestwards into Southern Europe, where a secondary centre
(1025mb) lies over Southern Italy. Winds across the UK are mostly
light, and from a westerly quarter. Many parts will be mainly dry and
bright under a ridge of high pressure. 850hPa temperatures range from
–2C over northeastern Scotland to +6C in the south. Forecast 2m
temperatures range from 10C over central and northern areas to +15C in
the south, but I suspect these are being underdone. Beyond this
pressure builds over Scandinavia, leaving the UK under warmer
southeasterly winds with a good deal of fine weather for most parts,
with temperatures set to reach the low 20's in the south.

DWD:
SLP: http://www.wetter.com/home/img/sat/g...071200_096.gif
Low pressure (990mb) lies over Northeastern Scandinavia, with another
low (990mb) lying to the south of Greenland in the Atlantic. High
pressure (1020mb) lies over Southern Europe and ridges into the
country. Winds across the UK are moderate northwesterlies in the
northeast, becoming light elsewhere. Many parts will be mainly dry and
bright, with showers restricted to the northeast for a time.
Temperatures will be close to normal in many parts. Beyond this
pressure builds strongly over Scandinavia, meaning the UK lies under
warmer south/southeasterly winds with a good deal of fine weather for
most parts, but perhaps cloudier in the far west with a little rain.


NOGAPS:
SLP: http://www.wetterzentrale.com/pics/Rngp1201.html
850hPa Temperatu http://www.wetterzentrale.com/pics/Rngp1202.html
(T+96 Charts Unavailable again tonight, so T+120 charts analysed
instead)
High pressure (1030mb) lies slap bang over the UK. Low pressure
(990mb) lies to the south of Greenland in the Atlantic. Winds across
the UK are light and variable. Many parts will be mainly dry and fine.
850hPa temperatures range from 0C in northeast England to +5C in the
southwest. Temperatures will be close to normal in many parts. Beyond
this pressure continues to build close to the northeast of the
country, meaning the UK lies under warmer south/southeasterly winds
with a good deal of fine weather for most parts.

JMA:
SLP: http://www.wetterzentrale.com/pics/Rjma961.html
850hPa Temperatures: http://www.wetterzentrale.com/pics/Rjma962.html
Low pressure (995mb) lies over Northeastern Scandinavia, with another
low (985mb) lying to the south of Greenland in the Atlantic. High
pressure (1040mb) lies well to the northeast over Siberia, and ridges
strongly southwestwards into Southern Europe, as well as ridging into
the UK. Winds across the UK are moderate northwesterlies in the
northeast, becoming light elsewhere. Many parts will be mainly dry and
fine, with showers in the farnortheast continuing for a time. 850hPa
temperatures range from –2C over northeast Scotland to +5C in the
southwest. Temperatures will be close to normal. Beyond this pressure
builds strongly close to the northeast of the UK, but feeds in cooler
easterly winds with plenty of fine weather for most parts.

Canadian – T+72 hours for FRIDAY:
All charts: http://weatheroffice.ec.gc.ca/data/m...ast/478_50.gif
Low pressure (986mb) lies close to the north of Scotland, whilst high
pressure (1024mb) lies over France. The UK lies under moderate to
fresh west/northwesterly winds, strongest in the north. Rain or
showers are likely in the north, with the driest weather always likely
in the south. Temperatures will be close to normal in most areas.

Summary:
Fairly good agreement again tonight that high pressure will build
close to the northeast of the UK over the weekend and Scandinavia
early next week, turning the winds into a warmer south/southeasterly
direction with many parts turn mostly fine. The main exception is the
Japanese run which prefers to feed in a cooler easterly wind early
next week. However, the general theme is for conditions to settle down
and warm up somewhat, and this may well be our "Indian Summer."
 
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