"Dave.C" wrote in message
k...

"...with the jet stream sinking south with time.
Will, should we note that as maybe something to watch out for ?
Victor
Would that reinforce zonal conditions in the South but make it colder in the
North although still mainly westerly? Or would the synoptics depend on how
far South the jet was?

Dave



Dave if the jet sinks to about 50 deg N then we are in the firing line for some
deep lows crossing England, possibly giving snow in the north on their northern
flank.
But if the jet sinks further south then there is a possibility of the flow
splitting and setting up a blocked pattern again, usually behind a deep low
which becomes slow moving to the south of us. Things all depend on important
details such as perturbations in the jet which are all impossible to predict at
medium range (one reason why we see models oscillate in low positions and
timings etc.)

HTH

Will.
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