In November 2014, extreme freezing and precipitation took place in North America as a result of the passage of typhoon Nuri, which formed the omega block [1] [2] [3] and the snow effect of the Great Lakes . Snowy weather was observed in Canada, the eastern United States and some states of the western United States and parts of the northern regions of Mexico.
This wave of cold was the worst in the region after the January frosts of 2014 . The weather will continue to worsen for several weeks, presumably until Thanksgiving . [four]
Extreme weather events have been observed since November 8, 2014.
Reasons
The northern movement of typhoon Nuri from the Japanese islands towards the Bering Sea changed the high-altitude jet streams , which allowed the polar whirlwind to descend from the Arctic regions to southern Canada and the eastern part of the USA. In the area of residence of about 200 million people, because of this, lower than usual temperatures and early snowfalls were observed. [5] In places, catastrophic volumes of snow fell, up to an annual rainfall of three days [6] .
Consequences
At least 19 people died [7] [8] [9] .
In some places in the USA, temperatures are observed, 25 degrees Celsius lower than average. In St. Cloud, Minnesota had a record for November 33 cm of snow. In Ishpeming, Michigan , it was 62 cm. [10] On November 13, Casper, Wyoming had a record low temperature for November at −27 ° F, and in Denver, Colorado, at −14 ° F, which is only slightly warmer than the record frosts for this month. [11] .
Notes
- ↑ Arctic snap will ice Northern states, whipped down by 'bomb cyclone' . CNN (November 9, 2014). Date of treatment November 11, 2014.
- ↑ Area Forecast Discussion . NOAA (November 13, 2014). Date of treatment November 13, 2014.
- ↑ Unrelenting outbreak of frigid air smashes temperature records in US . Mashable (November 12, 2014). Date of treatment November 14, 2014.
- ↑ http://www.weather.com/news/weather-winter/arctic-cold-outbreak-november-locked-20141110
- ↑ Polar Vortex to Blast 200 Million People With Arctic Air (November 8, 2014). Date of treatment November 10, 2014.
- ↑ [1] // Lenta.ru, 2014-11-19 “New York State ... CNN, it has been snowing for three days now. During this time, the annual rainfall fell. In some areas, snow cover exceeds 1.5 meters. ”
- ↑ Error in footnotes ? : Invalid
<ref>; for footnotesWinter Storm Astro kills 4 in Minnesotatext not specified - ↑ Error in footnotes ? : Invalid
<ref>; no reference forBozeman kills at least 11 in traffic accidents - ↑ Error in footnotes ? : Invalid
<ref>; for footnotesFrigid snowstorm cuts through the US - ↑ Rice, Doyle . South and East: Get ready for the icebox , USA Today (November 11, 2014). Date of treatment Nobember 15, 2014.
- ↑ Fritz, Angela . Arctic blast grips Central US with record cold temperatures , Washington Post (November 13, 2014). Date of treatment November 15, 2014.