The February 2021 North American cold wave was an extreme weather event that brought record low temperatures to a significant portion of Canada, the United States and parts of northern Mexico during the first half of February 2021. The cold was caused by a southern migration of the polar vortex, likely caused by a sudden stratospheric warming event that occurred the prior month. Temperatures fell as much as 25–50 °F (14-28 °C) below average as far south as the Gulf Coast. Severe winter storms also were associated with the bitter cold, which allowed for heavy snowfall and ice accumulations to places as far south as Houston, Texas, and contributing to one of the snowiest winters ever in some areas in the Deep South.
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| - February 2021 North American cold wave (en)
- Vague de froid de 2021 en Amérique du Nord (fr)
- Onda de frio na América do Norte em 2021 (pt)
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| - La vague de froid de 2021 en Amérique du Nord est un événement météorologique qui s'est déroulé en février 2021. De l'air arctique est descendu sur les Prairies canadiennes au début du mois, s'est propagé au centre des États-Unis en mi-février et a même atteint le nord du Mexique. Cette vague de froid d'une intensité remarquable a battu de nombreux records de températures et de chutes de neige. (fr)
- The February 2021 North American cold wave was an extreme weather event that brought record low temperatures to a significant portion of Canada, the United States and parts of northern Mexico during the first half of February 2021. The cold was caused by a southern migration of the polar vortex, likely caused by a sudden stratospheric warming event that occurred the prior month. Temperatures fell as much as 25–50 °F (14-28 °C) below average as far south as the Gulf Coast. Severe winter storms also were associated with the bitter cold, which allowed for heavy snowfall and ice accumulations to places as far south as Houston, Texas, and contributing to one of the snowiest winters ever in some areas in the Deep South. (en)
- A onda de frio na América do Norte em 2021, foi causada por um severo vórtice polar do Ártico, que atingiu a região em fevereiro. O Texas (EUA) teve o serviço de energia afetado pela temperatura de -18 °C. Na capital Austin, uma grossa camada de gelo ficou acumulada em ruas, árvores e veículos Por causa do frio intenso, o presidente dos Estados Unidos Joe Biden declarou emergência no estado. Os governos de Alabama, Oregon, Oklahoma, Kansas, Mississipi e Kentucky também decretaram estágio de emergência. Louisiana, Virgínia Ocidental e Ohio também tiveram estragos por causa da tempestade. (pt)
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| - February 2021 North American cold wave (en)
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| - Canada
- San Antonio, Texas
- Electric Reliability Council of Texas
- 2011 Groundhog Day blizzard
- 2020–21 North American winter
- 2021 in the United States
- Billings, Montana
- Bottineau, North Dakota
- Des Moines, Iowa
- Arctic front
- Houston
- Little Rock, Arkansas
- United States
- United States dollar
- Early 2014 North American cold wave
- Eastern United States
- Polar vortex
- Salem, Oregon
- Saltillo
- Cold waves in Canada
- Great Plains
- Cold waves in the United States
- 2020–21 North American winter
- Sudden stratospheric warming
- Houston, Texas
- February 2021 events in North America
- Wekweeti
- Winnipeg, Manitoba
- Jet stream
- 2021 Texas power crisis
- 2021 Western North America heat wave
- Dallas
- Dallas/Fort Worth International Airport
- Fargo, North Dakota
- Fayetteville, Arkansas
- February 13–17, 2021 North American winter storm
- February 15–20, 2021 North American winter storm
- February 2015 North American cold wave
- North America
- Northwest Territories
- Central United States
- Gulf Coast of the United States
- Hastings, Nebraska
- Texas
- Arkansas
- Cold wave
- Upper Midwest
- Southwest Power Pool
- Edmonton, Alberta
- Mexico
- Oklahoma
- Oklahoma City
- Uranium City, Saskatchewan
- Rolling blackout
- Winterize
- Southern Plains
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| lowest temperature
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| - Canada, Central United States, Eastern United States, Northern Mexico (en)
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| - the 2020–21 North American winter (en)
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| - The February 2021 North American cold wave was an extreme weather event that brought record low temperatures to a significant portion of Canada, the United States and parts of northern Mexico during the first half of February 2021. The cold was caused by a southern migration of the polar vortex, likely caused by a sudden stratospheric warming event that occurred the prior month. Temperatures fell as much as 25–50 °F (14-28 °C) below average as far south as the Gulf Coast. Severe winter storms also were associated with the bitter cold, which allowed for heavy snowfall and ice accumulations to places as far south as Houston, Texas, and contributing to one of the snowiest winters ever in some areas in the Deep South. With the record cold advancing so far south, effects were crippling and widespread. Many regions within the Southern Plains such as Oklahoma, Arkansas and Texas broke or nearly reached record-low temperatures not seen in decades or even a century. In the latter state of Texas, the record cold caused enormous strain on the power grid and froze pipelines, leading millions to lose power and many pipes to burst. At least 278 people were killed directly or indirectly by severe cold, and the damages are estimated to exceed $198.575 billion (2021 USD), including at least $197.075 billion in the United States and $1.5 billion in Mexico. (en)
- La vague de froid de 2021 en Amérique du Nord est un événement météorologique qui s'est déroulé en février 2021. De l'air arctique est descendu sur les Prairies canadiennes au début du mois, s'est propagé au centre des États-Unis en mi-février et a même atteint le nord du Mexique. Cette vague de froid d'une intensité remarquable a battu de nombreux records de températures et de chutes de neige. (fr)
- A onda de frio na América do Norte em 2021, foi causada por um severo vórtice polar do Ártico, que atingiu a região em fevereiro. O Texas (EUA) teve o serviço de energia afetado pela temperatura de -18 °C. Na capital Austin, uma grossa camada de gelo ficou acumulada em ruas, árvores e veículos Já no Nebraska (Lincoln), a temperatura chegou a -35 °C e quebrou o recorde anterior de 1978, que era de -28 °C. Mais de 4 milhões de pessoas ficaram sem energia elétrica; 2,5 milhões, só no Texas e o Serviço Meteorológico Nacional (NWS) alertou para uma "zona extensa e sem precedentes de condições perigosas de inverno" da Costa Leste à Costa Oeste, com mais de 150 milhões de norte-americanos em alerta. Por causa do frio intenso, o presidente dos Estados Unidos Joe Biden declarou emergência no estado. Os governos de Alabama, Oregon, Oklahoma, Kansas, Mississipi e Kentucky também decretaram estágio de emergência. Louisiana, Virgínia Ocidental e Ohio também tiveram estragos por causa da tempestade. Ao todo, 169 pessoas morreram por causa das tempestades de neve nos 3 países. Muitas delas, durante um engavetamento que envolveu 130 veículos. O mega-acidente ocorreu perto de Fort Worth, na região metropolitana de Dallas. As autoridades tiveram que criar um "centro de encontro de famílias" nas proximidades do local da tragédia. Por isso, Matt Zavadski, porta-voz de um dos serviços de ambulância do Texas, pediu em entrevista à NBC, que os moradores da região permaneçam em casa. "Temos muitas equipes de emergência trabalhando muito neste momento. A última coisa que precisamos é gente que não precisa se envolvendo em qualquer tipo de acidente", pediu Zavadski. Como se não bastasse, agora as áreas afetadas viveram uma onda de incêndios por causa do frio extremo. Com o desespero de pessoas sem energia elétrica, muitas delas acabaram acendendo lareiras e aquecedores à carvão e lenha para se esquentarem. Com isso, 3 incidentes já ocorreram com 3 mortos em Houston intoxicados com monóxido de carbono (CO). Os bombeiros tiveram dificuldade para apagar o fogo, porque os dutos de água em muitas cidades, estavam completamente congelados. (pt)
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