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A cold wave (known in some regions as a cold snap, cold spell or Arctic Snap) is a weather phenomenon that is distinguished by a cooling of the air. Specifically, as used by the U.S. National Weather Service , a cold wave is a rapid fall in temperature within a 24-hour period requiring substantially increased protection to agriculture, industry ...
Also cold spell and cold snap. A period of weather characterized by excessively low temperatures, which may or may not also be accompanied by changes in humidity . Very cold weather is often only referred to as a cold wave if the temperature, or the rate at which the temperature decreases within a given time period, is abnormal relative to the ...
Many spots might see their first freeze of the season if they did not already this past cold spell. Original article source: 231 million blasted with arctic air as 'dangerously cold' temps invade US.
Cold air from the north tended to contain less moisture than from the west, meaning less cloud cover and therefore lower overnight temperatures.
The February 2015 North American cold wave was an extreme weather event that affected most of Canada and the eastern half of the United States. Following an earlier cold wave in the winter, the period of below-average temperatures contributed to an already unusually cold winter for the Eastern U.S.
The strong cold front arriving Thursday will send temperatures plunging to single digits. Wind chills below zero behind 30 to 40 mph winds and gusts of up to 45 mph are possible.
The mercury dropped to minus 11.1C at Aviemore in Scotland overnight on Tuesday, which ranks as the ninth coldest night this winter so far.
Extreme cold warning NPW – Dangerously cold air temperatures and/or wind chills, capable of causing life-threatening medical conditions (such as severe frostbite and hypothermia) or death associated with accelerated heat loss from exposed skin, are forecast to meet or exceed locally defined warning criteria for more than three hours over at ...