Posted: Wed Feb 11, 2004 7:19 pm Post subject: 12Z Model Summary -
Wednesday 11th February 2004

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Charts analysed are for T+96 hours - 12Z Sunday 15th February 2004
unless stated.

UKMetO:
SLP: http://www.wetterzentrale.com/pics/Rukm961.html
High pressure (1030mb) lies over Southern England and much of Western
Europe. Low pressure (1005mb) lies to the southwest of Britain in the
Atlantic, with another low (995mb) close to Greenland. Winds across
the UK are mostly light west/southwesterlies. Most areas will be fine
and dry, but with variable amounts of cloud. Temperatures will be
close to or just above normal. Beyond this conditions remain settled
with high pressure building over the UK further.

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
High pressure (1030mb) lies close to southeast England. Low pressure
(990mb) lies to the west/southwest of the UK in the Atlantic, with
another low (1000mb) close to Greenland. Winds across the country are
light southwesterlies. Most parts will be mainly dry and fine, but
cloud amounts will vary. 850hpa temperatures range from -2C in the
north to +3C in the southwest. Forecast 2m temperatures range from +8C
in the northeast to +10C in the southwest. Beyond this conditions are
fairly mild, with somewhat more unsettled weather moving in from the
west.

DWD:
SLP: http://www.wetter.com/home/img/sat/g...111200_096.gif
High pressure (1025mb) lies over much of Britain and Western Europe.
Low pressure (1005mb) lies to the west of Britain in the Atlantic.
Winds across the country are mostly light and variable. Most areas
will be mainly dry and fine. Temperatures will be close to or just
above normal. Beyond this conditions remain mostly settled but cooler
as high pressure builds close to the west/northwest of the UK.

NOGAPS:
SLP: http://www.wetterzentrale.com/pics/Rngp961.html
850hPa Temperatu http://www.wetterzentrale.com/pics/Rngp962.html
High pressure (1030mb) lies over much of Southern Britain and Western
Europe. Low pressure (975mb) lies to the west of the UK in the
Atlantic, with another low (1010mb) close to Eastern Greenland. Winds
across the country are light southwesterlies most places. Most areas
will see mostly dry and fine conditions, but variable cloud amounts.
850hpa temperatures are close to 0C in most places. Temperatures will
be close to or just above normal. Beyond this conditions remain very
similar with little change.

JMA:
SLP: http://www.wetterzentrale.com/pics/Rjma961.html
850hPa Temperatures: http://www.wetterzentrale.com/pics/Rjma962.html
High pressure (two centres of 1025mb) lies close to Britain and much
of Western Europe. Low pressure (1005mb) lies to the southwest of
Britain in the Atlantic, with another low (975mb) to the southwest of
Greenland. Winds across the country are light and variable. Most areas
will be mainly dry and fine, but with a lot of cloud about. 850hpa
temperatures range from -3C in the north to 0C in the south.
Temperatures will be close to or just above normal in most parts.
Beyond this conditions are rather mild and remain mostly settled.

Canadian – T+72 hours for SATURDAY:
All charts: http://weatheroffice.ec.gc.ca/data/m...ast/478_50.gif
High pressure (1032mb) lies over Southern England. Low pressure
(984mb) lies close to Iceland, with another low (996mb) well to the
west of Britain in the Atlantic. Winds across the country are mainly
light south/southwesterlies. Many areas will be fine but with variable
amounts of cloud. Temperatures will be close to or just above normal
in many areas.

Summary:
A settled outlook again generally, but still with considerable
differences on details between the models. Most models keep things
mostly settled into next week, with GFS an outlier in this sense. More
runs are needed.