November 2020 North American storm complex

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November 2020 North American storm complex
GOES-16 satellite imagery of the storm complex impacting the Ohio Valley at 16:31 UTC (11:31 a.m. EDT) on November 30
Meteorological history
FormedNovember 29, 2020
DissipatedDecember 2, 2020
Winter storm
Highest gusts115 km/h (70 mph)
Lowest pressure993 hPa (mbar); 29.32 inHg
Maximum snowfall or ice accretion24 in (61 cm) at Thompson, Ohio
Tornado outbreak
Tornadoes5
Maximum ratingEF1 tornado
Duration12 hours, 43 minutes
Overall effects
FatalitiesNone confirmed
Damage>$100 million (2020 USD)[1]
Areas affectedSouthern United States, Ohio Valley, Northeastern United States, Eastern Canada
Power outages>100,000

Part of the 2020–21 North American winter and tornado outbreaks of 2020

The November 2020 North American storm complex was a major early-season snowstorm that impacted most of the Ohio Valley from November 30–December 2 with heavy snow, gusty winds, and near-whiteout conditions. The system originated from a weak gulf low off the coast of Texas on November 29, which began to move northeastward onto land the next day. It then began to strengthen, as well as slowing its movement down, resulting in heavy, wind-driven snow for prolonged periods of time in the Ohio Valley. It also triggered a major lake-effect snow event from December 1–2 as the system stalled over Lake Ontario, resulting in additional heavy snowfall. The storm system was also responsible for a severe thunderstorm outbreak in the Southeast and Mid-Atlantic regions, causing 22 severe thunderstorms and 5 tornadoes. In total, the system is estimated to have caused at least $100 million (2020 USD) in damages.[1] It was unofficially named Winter Storm Dane by The Weather Channel.[2]

  1. ^ a b "Global Catastrophe Recap – November 2020" (PDF). Aon Benfield. December 10, 2020. p. 4. Retrieved March 6, 2021.
  2. ^ "Winter Storm Brought Wind-Driven Snow to Eastern Great Lakes, Appalachians". weather.com. December 2, 2020.