190+mph Jet Stream Roars Across UK, Cuts Europe Bound Flight Times

Written by on November 5, 2013 in Rest of World, United Kingdom & Ireland with 0 Comments

Quick post tonight but wanted to quickly show you the jet pattern and it’s current influence over the UK at the moment. As you can see from the below chart, it’s basically splitting the air mass with night lows of -6C in the Highlands while waves of energy riding the under side of the jet is promoting not only wind and rain but also pushes of much milder air.

Notice in the below chart that while racing at 190+mph, you can see how it’s separating the air mass directly over us.

gfs-5-18

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The powerful jet stream will most certainly be shortening flight times and saving tons of fuel for air lines heading Europe bound these days. 190-200 mph jet winds can cut a solid hour off a flight from New York to London but can have the opposite effect on North America bound flights.

The UK air mass is maritime-polar or in other words it’s westerly with strong Atlantic influence BUT with the tremendous cold now building over Greenland, that jet stream is sucking in some of that cold to the north and driving it across the UK in modified fashion. It’s that horrible damp cold.

The below ECMWF shows the cold air to the north that’s being driven across the UK. Check out the colour difference. BIG temperature contrast right now between north and south is the reason for such a strong jet.

Geopotential3250032hPa32and32Temperature32at3285032hPa_Europe_0

Little difference Thursday on that low that’s heading our way for the weekend may bring a fresh lobe of Greenland chill into the UK. It’s actually once that low pushes out after bringing heavy, flooding rains and gales that we should look out… why, high pressure settles in and we have colder nights that what we’ve just seen.

Geopotential3250032hPa32and32Temperature32at3285032hPa_Europe_48

The longer term continues to look good. We will continue to see a strongly +AO and near neutral AO but bodes well with intense cold shots later down the road.

Some modelling as well as even the GFS NAO/AO ensembles may be hinting at somewhat of a colder trend towards month’s end but time will tell. Don’t be surprised if we head well into December before it turns. We could, like in November 2009 see a cold end to November followed by more warmth and wet before the real flip nearer to Christmas.

Here’s the CFSv2 for December.. I like and agree with this..

glbz700MonInd2

More tomorrow… be sure to watch today’s video.

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