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Old January 13th 04, 09:40 PM posted to uk.sci.weather
Paul B Paul B is offline
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First recorded activity by Weather-Banter: Oct 2003
Posts: 104
Default 12Z Model Summary - Tuesday 13th January 2004

Charts analysed are for T+96 hours - 12Z Saturday 17th January 2004
unless stated.

UKMetO:
SLP: http://www.wetterzentrale.com/pics/Rukm961.html
Low pressure (995mb) lies to the west of Scotland in the Atlantic.
High pressure (1025mb) lies to the west of Spain, with another high
(1030mb) over northeastern Greenland. Winds across the country are
light to moderate southerlies, veering west/northwesterly in the
southwest. Most areas will see a lot of cloud with some rain, and
perhaps snow in the north. Temperatures will be close to or just below
normal in most parts. Beyond this pressure builds strongly to our
south over Western Europe, introducing very mild southwesterlies
across 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 (990mb) lies to the southeast of Iceland, with another
centre (990mb) over Eastern Poland. High pressure (1025mb) lies to the
west of Spain, with another high (1035mb) to the north of Greenland.
Winds across the country are mostly light and rather variable in
direction. Most parts will see some rain or showers - wintry in
places. 850hpa temperatures range from -5C in the north and east to
-2C in the southwest. Forecast 2m temperatures range from 0C in the
north to +5C in many other areas,but as high as +9C in the southwest.
Beyond this conditions slowly turn more settled from the southwest as
high pressure builds to the south, allowing much milder weather to
move in from off the Atlantic.

DWD:
SLP: http://www.wetter.com/home/img/sat/g...131200_096.gif
Low pressure (995mb) lies to the northwest of Scotland, with other
lows over Scandinavia. High pressure (1025mb) lies over and to the
west of Spain. Winds across the country are mostly light to moderate
west/northwesterlies. Many areas will see some rain or showers -
perhaps wintry in the north. Temperatures will be close to normal.
Beyond this conditions remain unsettled for a time before high
pressure tries to build in across the UK from the southwest before
heading towards Scandinavia.

NOGAPS:
SLP: http://www.wetterzentrale.com/pics/Rngp961.html
850hPa Temperatu http://www.wetterzentrale.com/pics/Rngp962.html
Low pressure (985mb) lies northern Scandinavia, with secondary centres
(995mb and 1000mb)) close to northern Britain. High pressure (1025mb)
lies to the west of Spain, with another high (1035mb) to the north of
Greenland. Winds across the country are mostly light and rather
variable in direction. Most parts will see some rain or showers -
wintry in places. 850hpa temperatures range from -7C in the northeast
to -2C in the south. Temperatures will generally be close to or just
below normal. Beyond this conditions slowly turn more settled as high
pressure tries to build in, and staying rather cold.

JMA:
SLP: http://www.wetterzentrale.com/pics/Rjma961.html
850hPa Temperatures: http://www.wetterzentrale.com/pics/Rjma962.html
Low pressure (985mb) lies between Iceland and Scandinavia, with a
secondary low (1000mb) over Poland. High pressure (1025mb) lies to the
west of Spain, with another high (1040mb) to the north of Greenland.
Winds across the country are mostly light and from a westerly
direction. Most parts will see some rain or a few showers - wintry in
the north. 850hpa temperatures range from -7C in the northeast to -1C
in the southwest. Temperatures will be close to or just below normal.
Beyond this high pressure builds to the south, allowing much milder
Atlantic air in with most of the unsettled conditions in the
northwest.

Canadian – T+72 hours for FRIDAY:
All charts: http://weatheroffice.ec.gc.ca/data/m...ast/478_50.gif
Low pressure (976mb) lies just to the east of England. High pressure
(1021mb) lies to the southwest of Spain in the Atlantic. Winds across
the country are mainly moderate to fresh north/northwesterlies. Rain
will clear the east, to leave all parts under a mixture of sunshine
and wintry showers, whilst temperatures will be close to or just below
normal.

Summary:
There are fairly strong indications from the models tonight that high
pressure will build to the south of the UK over the weekend and into
early next week, allowing most areas to turn more settled, but much
milder as southwesterly winds become established. The only exception
is the DWD model, which builds high pressure in across the country
before settling over Scandinavia. However, this seems to be a clear
outlier when compared to the other models.