A Jet stream anomaly
caused a deadly cold snap in Europe, described the worst in several decades has
taken nearly 200 lives leaving thousands trapped. Many of the dead from one of
the harshest European winter in decades are homeless. Meanwhile, the same Jet
stream anomaly caused temperatures further north near the Arctic Circle and the
US to be much warmer than normal. Countries from Italy to Ukraine on one hand
and on the other hand, upto to Greece and Turkey on the East struggled to cope
with temperatures that reached record lows in some places.
UKRAINE: Tens of
thousands of people have headed to shelters trying to escape the freeze that the
emergencies ministry said has now killed nearly 100 people. Most of them
literally froze to death on the street, with only a handful making it to
hospital before succumbing to hypothermia, the ministry said. Shivering and
hungry, tens of thousands of Ukrainians have sought help in the more than 2,000
temporary shelters set up by the authorities to help the poor survive the
fearsome spell of cold weather.
ROMANIA: Many people
died overnight because of the cold, bringing the overall toll to 22, the health
ministry said. Schools remained closed in some parts of the country as
temperatures reached minus 31 degrees Celsius.
BULGARIA: Mercury dipped to lows not seen in a
century.
LATVIA: 10 people have
died around the capital Riga alone, with no figures available for the rest of
the country.
LITHUANIA: A 55-year-old
homeless man found in the ruins of an abandoned house in the port city of
Klaipeda became the ninth victim of the chill.
ITALY: hundreds of
people were trapped overnight on trains as freezing temperatures and heavy
snowfalls in the centre and north caused widespread disruptions on roads,
railways and at airports.
SICILY: The cold has so
far killed an infant in and a 76-year-old pensioner in Parma during what
forecasters say is the coldest weather in Italy in 27
years.
AUSTRIA: An 83-year-old
woman was found frozen to death in the woods after apparently slipping on her
daily walk and not managing to get up again, becoming the country's second
victim of the cold snap, officials said. In Serbia, the cold has killed six
people and trapped some 11,500 others, mostly in remote mountain villages
inaccessible by road.
SERBIA: Homeless people unable to secure one of the 140 spots in
the capital's sole shelter took refuge in trolley buses and
trams.
FRANCE: Several regions
have been placed under "deep cold" watch; authorities banned trucks on several major
highways where the risk of snowfall and ice remained high.
UK: The Met Office has
issued its most serious cold weather alert of the winter so far after overnight
temperatures dropped to -9C in parts of the UK, with chilly conditions set to
continue into the weekend and some snow forecast.
GREECE: Forget
the usual images of Greece basking in hot sunshine reflecting on blue seas, and
imagine snow-covered mountains and sub-zero temperatures. Greece is in the grip
of arctic weather which has seen temperatures plummet well below zero. The ice
on the ground and the snow covered orange trees glimmer in sunlight which belies
the freezing condition
TURKEY: Extreme winter conditions have brought life to a
standstill across Turkey. The biggest freeze since 30 years has grounded 180
flights on Tuesday, and on Monday 200 flights were cancelled. The daily life of
the European side of Istanbul was mainly paralyzed today and snowfalls are
predicted to last until the weekend, with icy temperatures as low as Minus 27°
Celsius in Southern Turkey. Meteorology officials have warned that snowfall and
blizzards are likely to continue uninterrupted until February
7.
So why this
cold burst in February?
In general, the La Niña causes radical Jetstream changes
and you can click the arrow in the video to watch Accuweather’s explanation.
Moreover, the Arctic Oscillation (AO) which was strongly positive till mid
January overwhelmed the La Niña’s cooling effect by keeping the winds spinning
fast in the Arctic, not allowing the cold southwards. But for last two weeks,
the AO has flipped to its strongly negative mode as shown below which unleashed
the arctic blast into Europe.
The cold jet stream
dipped in Europe and Asia, but is still bottled up over North America. That's
because another weather phenomena, called the North Atlantic Oscillation (NAO)
is playing oddball by staying positive and keeping the cold away from the rest
of North America. About 90 percent of the time, the North Atlantic and Arctic
oscillations are in synch. But not this time, so much of the United States is
escaping the winter's worst. But this can change soon. The NAO index looks as if
it is going to soon flip strongly negative too.
India: Another
Western Disturbance underway, temperature to drop early next
week
India’s North-West,
is right now receiving an active western disturbance (WD) with rough weather
implications for not just the higher reaches but also the plains. On Thursday,
an India’s Met Office update confirmed the WD located the weather-making
westerly system lying over north Pakistan and adjoining Afghanistan. The system
would start affecting the western Himalayan region and adjoining plains from
Friday onwards. As it happened mid January, there is as simultaneous wave from
exactly the opposite direction (easterly wave) moving across the seawaters of
the Bay of Bengal aiming to hit south peninsular India from around the same time
today.
The IMD has forecast
heavy rain or snow at one or two places over Jammu and Kashmir and Himachal
Pradesh on Friday and Saturday. Importantly, the forecast also mentions about
the possibility of hailstorms lashing one or two places over Punjab, Haryana,
north Rajasthan and west Uttar Pradesh on Saturday. A two-day forecast said that
rain or snow would break out at a few places over Jammu and Kashmir and at one
or two places over Himachal Pradesh and Uttarakhand on Friday and increase
thereafter. From early next
week, temperatures in India should experience a significant dip
Taken from http://devconsultancygroup.blogspot.in
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