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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 ...
heat wave A period of weather characterized by excessively high temperatures, which may or may not be accompanied by high humidity or by drought. Very hot weather is often only referred to as a heat wave if the temperature is abnormal relative to the typical climate for a given location during a given season. Contrast cold wave. heavy snow warning
Hazardous seas warning MWS – Significant wave heights and/or wave steepness values—independent of strong winds—are forecast to cause rough surf in the warned coastal area and adjacent waters, which could pose a serious threat to vessels that do not move to stable waters or dock. Warning criteria may vary depending on the NWS Weather ...
0–9. Big Die-Up; Winter of 1886–1887; 1888 Northwest United States cold wave; Great Blue Norther of November 11, 1911; 1911–12 United States cold wave
The severe and prolonged nature of the upcoming cold wave has AccuWeather meteorologists comparing this event to others in recent years. Icicles hang on the back of a vehicle Monday, Feb. 15, 2021 ...
The December 1989 United States cold wave was a series of cold waves into the central and eastern United States from mid-December 1989 through Christmas. On December 21–23, a massive high pressure area pushed many areas into record lows. On the morning of the 22nd, Scottsbluff, Nebraska, experienced −42 °F (−41 °C).
The bulk of the cold is likely to occur before the middle of the month and may be so extreme that "this could end up being the coldest January since 2011 for the U.S. as a whole," AccuWeather Lead ...
The wave of freezing air will serve as a harsh reminder that it's still the dead of winter despite January producing temperatures of 5-15 degrees above average across the region.