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Old December 8th 03, 09:17 PM posted to uk.sci.weather
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Default 12Z Model Summary - Monday 08th December

Charts analysed are for T+96 hours - 12Z Friday 12th December 2003
unless stated.

UKMetO:
SLP: http://www.wetterzentrale.com/pics/Rukm961.html
Low pressure (955mb) lies to the north of Scandinavia, with another
low (980mb) to the west of Iceland. High pressure (1025mb) lies over
southern Iberia, with another high (1020mb) in the western Atlantic.
Winds across the country are mostly moderate southerlies. Many parts
will see some rain moving in from the southwest. Temperatures will be
close to or just above normal in most parts. Beyond cooler and showery
conditions give way to more settled weather as high pressure moves
closer to the southwest of the UK.

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 (975mb) lies over Northern Scandinavia. Another low
(980mb) lies to the south of Iceland in the Atlantic. High pressure
(1040m) lies well to the east of the UK over Russia, and ridges
towards Britain, with another high (1025mb) over Southwestern Iberia.
Winds across the UK are freshening southerlies in many areas. Most
eastern parts will be mainly dry and bright but turning cloudier with
some rain in the west. 850hPa temperatures range from -5C in the
northeast to +8C in the extreme southwest. Forecast 2m temperatures
range from +5C in the north to +12C in the far southwest. Beyond this
conditions remain mostly unsettled with rain or showers, and staying
rather on the mild side.

DWD:
SLP: http://www.wetter.com/home/img/sat/g...081200_096.gif
Low pressure (965mb) lies close to northern Scandinavia, with another
low (965mb) out in the Atlantic to the southwest of Iceland. High
pressure (1025mb) lies over central and southwestern Europe, with
another high (1025mb) in the Atlantic. Winds across the UK are mainly
fresh to strong south/southwesterlies in many areas. Most parts will
see rain or showers at times. Temperatures will be close to normal.
Beyond this conditions remain mostly unsettled and turn cooler later
as the winds veer northwesterly.

NOGAPS:
SLP: http://www.wetterzentrale.com/pics/Rngp1201.html
850hPa Temperatu http://www.wetterzentrale.com/pics/Rngp1202.html
T+96 charts unavailable, so T+120 charts analysed.
Low pressure (970mb) lies to the north of Scotland. High pressure
(1025mb) lies over Southern Iberia, with another high (1025mb) out in
the Central Atlantic. Winds across the UK are mainly fresh to strong
west/southwesterlies in many areas. Most parts will see rain or
showers. 850hPa temperatures range from -1C in the west to +2C in the
southeast. Temperatures will be close to normal in most places. Beyond
this conditions are cooler and showery for a time.

JMA:
SLP: http://www.wetterzentrale.com/pics/Rjma961.html
850hPa Temperatures: http://www.wetterzentrale.com/pics/Rjma962.html
Low pressure (970mb) lies to the north of Scandinavia. Another low
(970mb) lies to the south of Iceland. High pressure (1025mb) lies over
southwestrn Iberia, with another high (1020mb) in the western
Atlantic. Winds across the UK are moderate to fresh southwesterlies.
Most parts will see rain spreading east. 850hPa temperatures range
from +2C in the northwest to +7C in the southeast. Temperatures will
be close to or just above normal. Beyond this conditions remain
unsettled, and turn colder from the north for a brief time before
turning milder from the Atlantic again as high pressure builds close
to southern Britain.

Canadian – T+72 hours for THURSDAY:
All charts: http://weatheroffice.ec.gc.ca/data/m...ast/478_50.gif
Low pressure (959mb) lies to the north of Scandinavia, with another
low (996mb) to the west of Iceland. Another low (994mb) lies out in
the Atlantic. High pressure lies over Europe, and ridges across
Britain, with a secondary high (1013mb) lying close to the northwest.
Winds across the UK are mainly light and variable. Most parts will be
mainly dry and bright. Temperatures will be close to normal.

Summary:
Generally a mild and unsettled outlook, with only brief cooler spells
between the low pressure systems. The weekends cold snap predicted by
the GFS model yesterday has now pretty much disappeared.

***Apologies, but there will be no 12Z Model Summary tomorrow -
Tuesday 09th December 2003***
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