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While there is no well-agreed-upon date used to indicate the start of winter in the Northern Hemisphere, there are two definitions of winter which may be used. Based on the astronomical definition, winter begins at the winter solstice, which in 2012 occurred late on December 21, and ends at the March equinox, which in 2013 occurred on March 20. [1]
On November 21, 2013, the National Oceanic and Atmospheric Administration's Climate Prediction Center issued its U.S. Winter Outlook. Sea surface temperatures had been near average since spring 2012, and forecasters expected these conditions to continue through winter 2013–14, with neither El Niño nor La Niña conditions expected to affect the season's climate.
In Finland, a cold wave hit on the first days of March 2013. The cold wave had very sunny and dry weather for over a month-long period and brought the lowest temperatures for the 2012-13 winter season. The lowest measured temperature (-38.2 °C) was recorded on March 13 in Taivalkoski. [38]
The weather of 2012 marked the fewest fatalities from natural disasters in a decade, although there were several damaging and deadly floods, tropical cyclones, tornadoes, and other weather events. These include blizzards , cold waves , droughts, heat waves , and wildfires .
The following is a list of major snow and ice events in the United States that have caused noteworthy damage and destruction in their wake. The categories presented below are not used to measure the strength of a storm, but are rather indicators of how severely the snowfall affected the population in the storm's path.
The February 2013 North American blizzard, also known as Winter Storm Nemo [5] [6] and the Blizzard of 2013, [7] was a powerful blizzard that developed from the combination of two areas of low pressure, [8] primarily affecting the Northeastern United States and parts of Canada, causing heavy snowfall and hurricane-force winds.
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On Christmas Day 2012 (December 25), a tornado outbreak occurred across the Southern United States. This severe weather/tornado event affected the United States Gulf Coast and southern East Coast over a two-day span. It occurred in conjunction with a much larger winter storm event that brought blizzard conditions to much of the interior United ...