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Extreme weather

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arirish View Drop Down
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    Posted: January 30 2019 at 10:25pm
Extreme weather: Polar vortex in Midwest, record heat in Australia, weird warmth in Alaska. What's going on?
Doyle Rice, USA TODAY Published 6:02 p.m. ET Jan. 30, 2019 | Updated 8:36 p.m. ET Jan. 30, 2019

Extreme weather has wreaked havoc worldwide this month: As the upper Midwest shivered with record-breaking cold temperatures thanks to the polar vortex, wild extremes in weather were reported in other parts of the world.

In Australia, blistering heat this month has scorched the country, causing disastrous wildfires and setting temperature records. “Australia is currently experiencing all-time record temperatures – exceeding 115 degrees – and extended heat waves," said John Allen, a meteorologist and climate scientist at Central Michigan University.

In fact, all of Australia – again – is in the midst of one of its hottest summers on record, according to the New York Times. Dozens of wildfires raged on Tasmania, an island off the south coast of Australia.

It's so hot there that snakes are seeking refuge in people’s toilets, the Capital Weather Gang reported.

And in Alaska, it's too warm for sled dog races. "Rain and poor trail conditions have led to the cancellation of this year’s Willow 300 Sled Dog Race," the Anchorage Daily News reported. A stretch of above-freezing temperatures had led to open water on sections of the trail.

In fact, temperatures this week were significantly warmer in parts of Alaska than in the north-central part of the continental U.S. In McGrath, Alaska, a record-breaking temperature of 42 degrees was reported this week, the National Weather Service reported, which was 50 to 60 degrees warmer than portions of Minnesota.

Weird extremes like this may become more commonplace in the future: scientists say a warming world will likely be a more extreme world.

Although "human-caused climate change is not the sole cause of any single extreme event," the National Oceanic and Atmospheric Administration said, "changes in the intensity or frequency of extremes may be influenced by human-caused climate change."

Last June, a report from the World Meteorological Organization warned that the floods, heatwaves and other extreme weather conditions gripping many parts of the world "are likely to continue as a consequence of accelerating climate change."

“What we are seeing is consistent with climate change scenarios," said WMO spokeswoman Claire Nullis.

Man-made climate change, aka global warming, is caused by the burning of fossil fuels such as gas, coal and oil, which release greenhouse gases such as carbon dioxide (CO2) into the atmosphere. This extra CO2 causes temperatures of the atmosphere and oceans to rise, allows the atmosphere to hold more water vapor (which can add extra fuel to storms), and causes global sea levels to rise.

Other research has backed up a connection between extreme weather and global warming: A 2014 study in Nature found that bouts of extreme weather are linked to large fluctuations of wind patterns high above the Earth's surface, which could be related to climate change.

"The implication of our study is that if climate change was to make these wave patterns more frequent, this could lead to more heat waves in the western U.S., droughts in the central U.S. and cold outbreaks in the eastern U.S.," said James Screen of the University of Exeter in the United Kingdom.

That study showed "how large-scale atmospheric circulation patterns are affected by climate change," said climatologist Michael Mann of Penn State University.

Some new research suggests that climate change may make these frigid dips of arctic air down into the U.S. more possible, as a warming Arctic shoves the air from up there down here.

https://www.usatoday.com/story/news/world/2019/01/30/polar-vortex-2019-while-we-shiver-australia-enduring-record-heat/2724545002/
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Technophobe Quote  Post ReplyReply Direct Link To This Post Posted: February 28 2019 at 3:46pm
[It looks as if it is set to return again in March]


Home » Mesoscale Discussion » You are reading »
Yet another very intense Arctic outbreak across the United States through early March

By SWE | Mesoscale Discussion | 28 February 2019

While Europe is experiencing an unusually stable and warm weather these weeks, very dynamic winter weather continues on the other side of the Atlantic. United States are in for yet another brutal Arctic cold outbreak starting this weekend which will continue for much of the next week. The eastern 2/3 of the continental US will be in deep freeze for days!

500 mbar geopotential heights pattern reveals a deep trough moving across the northern US and gradually deepening as it spreads across the northeast US.

850 mbar temperature anomaly of the powerful Arctic cold airmass spreading across the large part of the country from north to south and then east.

2 m temperature anomaly shows days will be extremely cold with temperatures 30-40 °F below normal. For early March, this is very extreme and could lead into some record low values in some areas. Very cold airmass also reached deep southern states, including the coast of the Gulf of Mexico and Florida!

Stay alert for dangerous conditions and stay tuned for additional updates in the coming days!

Tagged in america arctic outbreak canada cold blast deep freeze great lakes great plains midwest united states

Source and a great deal of explanatory graphics:   http://www.severe-weather.eu/mcd/yet-another-very-intense-arctic-outbreak-across-the-united-states-through-early-march/
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Post Options Post Options   Thanks (0) Thanks(0)   Quote carbon20 Quote  Post ReplyReply Direct Link To This Post Posted: March 01 2019 at 2:43pm
NOTHING TO SEE HERE.........move along ,carry as normal.....

of course this has Nothing to do with climate change

go out and get your new 4x4 fossil fuel guzzing monstrosity,

keep eating your burgers that RAINFORESTS have been destroyed so you can get

your FAST FOOD fix,

use your electricity because "your house looks nice with all the lights on"

fly/drive thousands of miles to "watch a sports match"( what a waste of planet resourses).......

i could go on but you all know what i think by now............

"slate wiper"

12 Monkeys...............
1995 ‧ Science fiction film/Thriller ‧ 2h 11m a must for AFT
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Technophobe Quote  Post ReplyReply Direct Link To This Post Posted: March 05 2019 at 2:23pm
Sorry folks, there is more on the way:

https://www.accuweather.com/en/weather-news/next-severe-weather-outbreak-may-target-central-southern-us-this-weekend/70007609

Sorry again, Med; this is still in line with global warming predictions.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FluMom Quote  Post ReplyReply Direct Link To This Post Posted: March 05 2019 at 9:06pm
In Colorado we have not seen this much snow in 6 years...and this is bad? We need the water for Colorado and AZ and CA!!! But because we had global warming we did not have enough snow now that we have enough snow it is due to global warming!!!!   Give me a break folks make up your mind!!!   
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