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Late November snowstorm of 2020

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2020 Late November snowstorm
Category 1 "Notable" (RSI: 2.43)
Late November-Early December winter storm 2020-11-30 1631z.jpg
Visible satellite imagery of the storm system on November 30.
TypeSnowstorm
Tornado outbreak
Gulf low
Extratropical cyclone
FormedNovember 29, 2020
DissipatedDecember 2nd, 2020
Lowest pressure989 mb (29.21 inHg)
Lowest temperature11 °F (−12 °C)
Tornadoes confirmed4
Max rating1EF1 tornado
Duration of tornado outbreak22 days
Highest winds
  • 70 mph (110 km/h)
Maximum snowfall or ice accretion24 in (61 cm)
Thompson, OH
Areas affectedOhio, New York, Kentucky, Indiana, Tennessee, Michigan, Eastern United States, Florida, Alabama, Mississippi, Georgia, Canada, Nova Scotia
1Most severe tornado damage; see Fujita scale 2Time from first tornado to last tornado

The Late November snowstorm of 2020 was a three-day snowstorm that impacted the Eastern United States and Canada.

Meteorological history[edit]

On November 26, the Weather Prediction Center issued a moderate risk for heavy snow for November 30 and the next day.[1] Both November 30 and December 1 had a high risk of heavy snow including down into Tennessee. The snowstorm formed on November 29 after starting off as a Gulf low cold front. By the early morning hours of the November 30, snow started accumulating in northern Tennessee.[2]

Impacts[edit]

Snowfall map depicting snow accumulations across the Eastern United States

The Westmoreland, Tennessee, area had already gotten a dusting of snow by 4 am. Harrisburg, Illinois, had around a half an inch of snow. Around 11 am, snow started getting more intense in Indiana and parts of Tennessee. Snow totals in Indiana by 3 pm were at around 4 inches in some areas, while in Tennessee was only around half an inch. Snow was filtering into Alabama and Mississippi. In the Arab, Alabama, area an inch of snow was measured. By around late afternoon, snow was accumulating in Tennessee and Mississippi. Around Half an inch of snow was being reported in Wartrace, Tennessee, just south of Murfreesboro, Tennessee, as snow totals were growing in parts of rural Indiana. The Elnora, Indiana, area received up to 7 inches (180 mm) of snow as the storm continued to move east. When the storm got to the Great Smoky Mountains area, the Gatlinburg and Pigeon Forge area, the Mount Le Conte got up to 5 inches (130 mm) on the highest peak just 4 hours after the snow started. By the end of the night, Mount Le Conte had 11 inches (280 mm) inches of snow reported by the National Weather Service in Morristown, Tennessee. [3]

By December 1, lake-effect snow built along Lake Erie as winter-storm warnings were in place for a long day of heavy snow. [4]By 7 am, the snow started to get heavier and visibility was down in cities along the lake, including Cleveland, Ohio, and Buffalo, New York. The city of Toronto reported 3.5 inches (89 mm) of snow had fallen and surrounding city of Hamilton reported 5 inches (130 mm) of snow had fallen by 12 pm. Snow started piling up in Ohio and Pennsylvania. Thompson in Ohio reported the most snow from this snowstorm. By December 2, the storm started to weaken, dissipating by 6 am. The backside of the system also bought a significant temperature drop, with readings such as 15°F in Murfreesboro, Tennessee, and 11°F in Colebrook township.

Severe weather[edit]

The warm side of the system bought strong to marginally severe thunderstorms to the Southeast and Mid-Atlantic. Some of the storms became tornadic, with at least four tornadoes being confirmed on November 30. The day also produced at least 22 reports of wind damage out of an area stretching from Northeastern Maryland through Eastern Pennsylvania.[5][6]

Confirmed tornadoes[edit]

Confirmed tornadoes by Enhanced Fujita rating
EFU EF0 EF1 EF2 EF3 EF4 EF5 Total
0 2 2 0 0 0 0 4
List of confirmed tornadoes – Monday, November 30, 2020[note 1]
EF# Location County / parish State Start coord. Time (UTC) Path length Max width Summary
EF1 NNW of Hamburg to SE of Nankin Madison FL 30°35′32″N 83°31′20″W / 30.5923°N 83.5222°W / 30.5923; -83.5222 (Hamburg (Nov. 30, EF1))
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08:10-08:18 5.59 mi (9.00 km) 475 yd (434 m) Significant tree damage and minor damage to a home occurred near where this tornado touched down. The tornado was at its strongest and its widest point as it continued to significantly damage trees, and cause damage to multiple farm outbuildings. As the tornado narrowed, it snapped many pine trees. The tornado lifted near SR 53, just south of the Florida/Georgia state border.[7]
EF1 E of Port Deposit to Winchester Village Cecil MD 39°36′N 76°06′W / 39.60°N 76.10°W / 39.60; -76.10 (Port Deposit (Nov. 30, EF1))
Fatal error: The format of the coordinate could not be determined. Parsing failed.


19:37-19:42 5.5 mi (8.9 km) 100 yd (91 m) Several hardwood trees were uprooted, softwood trees were snapped, and roof decking was uplifted.[8][9][10]
EF0 NNW of Baltimore Corner to SW of Templeville Caroline MD 39°04′03″N 75°51′07″W / 39.0675°N 75.8520°W / 39.0675; -75.8520 (Baltimore Corner (Nov. 30, EF0))
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20:13-20:20 5.3 mi (8.5 km) 75 yd (69 m) This tornado first touched down along MD 313, just south of the Caroline/Queen Anne's county border. Little to no damage was found in this area, however, a small tornado debris signature appeared on doppler radar. As this tornado moved northeastward, it passed northwest of Henderson. In this area, a small horse barn was destroyed, with its walls collapsed, and its roof blown across a yard into a nearby home. The nearby home had damage done to its roof, siding, and chimney. Several trees and tree branches were snapped or uprooted. Later on down the path, two barns were destroyed. One of the barns' roofs was lifted and tossed, while the other was peeled and twisted. The tornado continued northeast before lifting.[11]
EF0 Montgomeryville Montgomery PA 40°13′57″N 75°14′11″W / 40.232546°N 75.236494°W / 40.232546; -75.236494 (Montgomeryville (Nov. 30, EF0))
Fatal error: The format of the coordinate could not be determined. Parsing failed.


20:47 0.5 mi (0.80 km) 100 yd (91 m) A brief tornado touched down just east of the PA 309 northbound onramp to the 202 Parkway. As the tornado crossed the 202 Parkway, two small trees were uprooted. Wooden picnic tables outside of a Texas Roadhouse were tossed, shattering the front window of a nearby closed restaurant. This same restaurant had air-handling equipment and siding torn from the building. Six to eight cars in the parking lots of both the Texas Roadhouse and the nearby restaurant were either shaken or tossed by the tornado. Several small tree branches were snapped in the area. Metal light posts were bent at the base, and two stop signs were either bent over or removed from the ground. A supporting pole at the entrance of a nearby Staybridge Suites was damaged. The tornado inflicted minor damage to roofing at a Costco before lifting less than one minute after it touched down.[12]

See also[edit]


Other articles of the topics Weather AND United States : Banner County Wind Farm

Other articles of the topic Weather : iTyphoon, Weather and climate, Golden Valley Wind Energy Facility, 2021–22 North American winter, Banner County Wind Farm, Tropical Depression Ten (2005)

Other articles of the topic United States : Paul Spitzfaden, List of primary statistical areas of the United States, 2011 Douglas shooting, CNN Coco Bandicoot, Shockwave (Transformers), Ms. Marvel (TV series), Walk with Us
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  • Early December 2020 nor'easter
  • List of North American tornadoes and tornado outbreaks

Notes[edit]

  1. All dates are based on the local time zone where the tornado touched down; however, all times are in Coordinated Universal Time for consistency.

References[edit]

  1. https://www.wearecentralpa.com/weather/morning-forecast-monday-november-30-2020/
  2. https://www.wate.com/video/snow-across-east-tennessee-nov-30-2020/6077086/
  3. https://www.wvlt.tv/2020/12/05/more-snow-at-leconte-lodge-creates-magical-winter-scene/
  4. https://www.wkyc.com/article/weather/severe-weather/winter-storm-live-blog-northeast-ohio-snow/95-5f21c544-8769-443f-95ee-85d8f5b0786a
  5. "Storm Prediction Center 20201129's Storm Reports". www.spc.noaa.gov. Retrieved 3 December 2020.
  6. "Storm Prediction Center 20201130's Storm Reports". www.spc.noaa.gov. Retrieved 3 December 2020.
  7. NWS Damage Survey for 11/30/2020 Tornado Event (Report). Iowa Environmental Mesonet. National Weather Service Weather Forecast Office in Tallahassee, Florida. November 30, 2020. Retrieved November 30, 2020.
  8. Preliminary Local Storm Report (Report). Iowa Environmental Mesonet. National Weather Service Weather Forecast Office in Sterling, Virginia. December 1, 2020. Retrieved December 1, 2020.
  9. "NWS Balt/Wash storm survey confirms that an EF-1 tornado, with estimated winds 90 mph, occurred yesterday afternoon in Port Deposit, Cecil County, Maryland from 2:37 to 2:42 PM EST". NWS Baltimore-Washington Twitter. Retrieved December 1, 2020.
  10. "ArcGIS Web Application". apps.dat.noaa.gov. Retrieved 2020-12-03.
  11. NWS Damage Survey for 11/30/20 MD Tornado Event (Report). Iowa Environmental Mesonet. National Weather Service Weather Forecast Office in Mount Holly, New Jersey. December 2, 2020. Retrieved December 2, 2020.
  12. NWS Damage Survey for 11/30/20 Tornado Event (Report). Iowa Environmental Mesonet. National Weather Service Weather Forecast Office in Mount Holly, New Jersey. December 1, 2020. Retrieved December 1, 2020.

External links[edit]

Category:North American winters Category:2020 in North America Category:2020 meteorology Category:2020–21 North American winter Category:Tornadoes of 2020 Category:F0 and F1 tornadoes Category:Tornadoes in Florida Category:Tornadoes in Maryland Category:Tornadoes in Pennsylvania


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