Question Author
the jet stream.
thanks to the three replys.
for the record metcheck has not operated since last oct.
as to this high speed stream of wind travelling some 200 mph 6 miles high it is a fact that surface weather is determined by pressure and fronts etc.
the jet stream determines the general flow of weather patterns.
last winter it was much futher south flowing across iberia and so opened .
the door for an abnormally persistant eastrly pattern from siberia
it is because of this massive affect on us that i am looking for a good site.