What is the weather so bad? STV meteorologist Sean Batty explains


the storms are coming so quickly we

might run out of names and as another

week begins there's no sign that the

weather is going to improve anytime soon

but why are things so bad this year s TV

meteorologist Sean batty explains most

people will have noticed the real lack

of wintry weather this winter especially

during December and January we were not

alone and with the exception of Alaska

most parts of the northern hemisphere

have experienced much warmer conditions

than normal and no snow in moscow snow

even had to be shipped in for New Year

celebrations and there wasn't a white

Christmas for most of the US and even

Canada so where has winter been then now

picture this a fast-moving cone of air

encircling the Arctic extending from

about six miles to 30 miles above the

ground this is called the polar vortex

the fast-moving air acts like a ring

fence holding in the cold air which gets

colder and colder as the long polar

night continues occasionally this can

break down and allow bursts of very cold

air to break away and move south into

Russia the US and sometimes us here in

Scotland has happened in 2018 when the

beast from the east arrived but this

winter the polar vortex has remained

robust and in place meaning the cold air

has stayed backed up over the Arctic

what's quite interesting though is the

Arctic sea ice is covering the largest

area it has since 2010 after a bit of a

jump in early February this is likely to

be down to the fact the polar vortex has

remained fairly stationary so we've

covered the cold air but why is it so

windy and wet here well while the polar

vortex is strong jet streams further

south are usually stronger the jet

stream that affects us here is called

the polar jet in this drives areas of

winds and rain around the northern

hemisphere recently it's been very

strong reaching speeds in excess of 250

miles per hour at 30,000 feet and that's

why we've had record-breaking flight

times across the Atlantic from the US

recently great news if you're on a

flight back from New York but not great

for those of us on the ground

that powerful jet stream is also winding

up in deepening areas of low pressure

crossing the Atlantic and turning them

into storms through a process known as

explosive cyclogenesis unfortunately for

us here in Scotland not much in the

atmosphere is going to change in the

foreseeable future meaning that this

will be the status quo with more rain

and occasional storms there is a little

hint in some of the computer models that

the jet may are just slightly south

towards March which would move storm

tracks south of us but that also means

snow will become more likely for more on

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