Tornado Down: Original Edition: The Unputdownable No. 1 Sunday Times Bestseller

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Tennessee Event Report: EF1 Tornado (Report). National Centers for Environmental Information. National Weather Service in Memphis, Tennessee. 2021 . Retrieved March 20, 2022. Tennessee Event Report: EF1 Tornado (Report). National Centers for Environmental Information. National Weather Service in Memphis, Tennessee. 2021 . Retrieved March 20, 2022. Arkansas Event Report: EF1 Tornado (Report). National Centers for Environmental Information. National Weather Service in Memphis, Tennessee. 2021 . Retrieved March 19, 2022. The winds of the tornado vortex and of constituent turbulent eddies, as well as airflow interaction with the surface and debris, contribute to the sounds. Funnel clouds also produce sounds. Funnel clouds and small tornadoes are reported as whistling, whining, humming, or the buzzing of innumerable bees or electricity, or more or less harmonic, whereas many tornadoes are reported as a continuous, deep rumbling, or an irregular sound of "noise". [44] a b "Longest tornado ever? Deadly twister that hit 5 states may set record". The Cincinnati Enquirer. Archived from the original on March 17, 2022 . Retrieved December 14, 2021. Tornadoes are most common in spring and least common in winter, but tornadoes can occur any time of year that favorable conditions occur. [24] Spring and fall experience peaks of activity as those are the seasons when stronger winds, wind shear, and atmospheric instability are present. [87] Tornadoes are focused in the right front quadrant of landfalling tropical cyclones, which tend to occur in the late summer and autumn. Tornadoes can also be spawned as a result of eyewall mesovortices, which persist until landfall. [88]

In South Dakota, Sioux Falls issued a snow alert. The Lincoln County Sheriff's Office issued a no-travel alert. Several highways, including Interstate 229 and Interstate 90 were snow-covered. [177] Numerous school districts around the area cancelled classes on December 10. [178]Trees were downed, and storage buildings were damaged. This was the second of three brief tornadoes in the path break between the first EF4 tornado and the second EF4 tornado. [50] The flow inside the funnel of the tornado is downward, supplying water vapor from the cloud above. This is contrary to the upward flow inside hurricanes, supplying water vapor from the warm ocean below. Therefore, the energy of the tornado is supplied from the cloud above. The complicated mechanism is explained in The United States averages about 1,200 tornadoes per year, followed by Canada, averaging 62 reported per year. [80] NOAA's has a higher average 100 per year in Canada. [81] The Netherlands has the highest average number of recorded tornadoes per area of any country (more than 20, or 0.00048/km 2, 0.0012/sqmi annually), followed by the UK (around 33, 0.00013/km 2, 0.00034/sqmi per year), although those are of lower intensity, briefer [82] [83] and cause minor damage. [76] Intense tornado activity in the United States. The darker-colored areas denote the area commonly referred to as Tornado Alley. a b c d e f g h i j k l m "ArcGIS Web Application". apps.dat.noaa.gov. Archived from the original on April 23, 2020 . Retrieved December 13, 2021. One storm-related death confirmed in Shelby County". WMC-TV. Gray Television. December 11, 2021. Archived from the original on December 17, 2021 . Retrieved December 17, 2021.

Trees were downed in and around town, one of which fell on a house. This tornado was the second produced by the Quad-State supercell. [33] Service interruption report". Hydro-Québec. Archived from the original on April 21, 2021 . Retrieved December 13, 2021. Georgia Event Report: EF0 Tornado (Report). National Centers for Environmental Information. National Weather Service in Atlanta, Georgia. 2021 . Retrieved March 20, 2022.Massey, Kaelin (December 16, 2021). "Mayfield candle factory workers file lawsuit, alleging 'flagrant indifference' to their rights". WLKY. Archived from the original on December 17, 2021 . Retrieved December 17, 2021. Missouri Event Report: EF2 Tornado (Report). National Centers for Environmental Information. National Weather Service in St. Louis, Missouri. 2021 . Retrieved March 19, 2022. Press Briefing by Press Secretary Jen Psaki, December 13, 2021". The White House. December 13, 2021. Archived from the original on December 14, 2021 . Retrieved December 14, 2021. Louis, Created by Lydia Jaja and Tyler Stanfield, Pathways Students-- NWS St (May 10, 2022). "December 10, 2021 Tornado Outbreak". ArcGIS StoryMaps . Retrieved October 8, 2023. {{ cite web}}: CS1 maint: multiple names: authors list ( link) Missouri Event Report: EF3 Tornado (Report). National Centers for Environmental Information. National Weather Service in St. Louis, Missouri. 2021 . Retrieved March 19, 2022. Missouri Event Report: EF1 Tornado (Report). National Centers for Environmental Information. National Weather Service in St. Louis, Missouri. 2021 . Retrieved March 19, 2022. Missouri Event Report: EF1 Tornado (Report). National Centers for Environmental Information. National Weather Service in St. Louis, Missouri. 2021 . Retrieved March 19, 2022. Missouri Event Report: EF0 Tornado (Report). National Centers for Environmental Information. National Weather Service in St. Louis, Missouri. 2021 . Retrieved March 19, 2022.

The tornado which holds most records in history was the Tri-State Tornado, which roared through parts of Missouri, Illinois, and Indiana on March 18, 1925. It was likely an F5, though tornadoes were not ranked on any scale in that era. It holds records for longest path length (219 miles; 352km), longest duration (about 3.5 hours), and fastest forward speed for a significant tornado (73mph; 117km/h) anywhere on Earth. In addition, it is the deadliest single tornado in United States history (695 dead). [24] The tornado was also the costliest tornado in history at the time (unadjusted for inflation), but in the years since has been surpassed by several others if population changes over time are not considered. When costs are normalized for wealth and inflation, it ranks third today. [115] When they do reach the ground they become a tornado.” How are tornadoes formed? Though rare, tornadoes in the UK can cause damage, as this one in North London in 2006 did (Photo: Getty) Coroner: Body found in Franklin County's Benson Creek has been identified". WLEX-TV. The E. W. Scripps Company. December 12, 2021. Archived from the original on December 18, 2021 . Retrieved December 17, 2021. Illinois Event Report: EF2 Tornado (Report). National Centers for Environmental Information. National Weather Service in Lincoln, Illinois. 2021 . Retrieved March 19, 2022. Illinois Event Report: EF1 Tornado (Report). National Centers for Environmental Information. National Weather Service in Lincoln, Illinois. 2021 . Retrieved March 19, 2022.

How tornadoes are forecasted

Kathryn Prociv; Nicole Acevedo (December 11, 2021). " 'Quad-State Tornado' crossed four states in four hours, a rare December tornado". NBC News. Archived from the original on December 12, 2021 . Retrieved December 12, 2021.

a b c "As cleanup continues, Missouri officials assessing damage from Friday's tornadoes". FOX 2. December 12, 2021. Archived from the original on December 14, 2021 . Retrieved December 14, 2021. Arkansas Event Report: EF0 Tornado (Report). National Centers for Environmental Information. National Weather Service in Memphis, Tennessee. 2021 . Retrieved March 19, 2022.a b Evan Bentley (December 10, 2021). "Mesoscale Discussion 1982". Storm Prediction Center. Archived from the original on December 10, 2021 . Retrieved December 12, 2021. WPC surface analysis valid for 12/12/2021 at 03 UTC". wpc.ncep.noaa.gov. Weather Prediction Center. December 12, 2021. Archived from the original on December 13, 2021 . Retrieved December 12, 2021. This tornado moved directly through Danville, where a church, a gas station, and some other businesses sustained significant roof damage, several homes sustained roof and fascia damage, and numerous trees were downed. A barn was destroyed outside of town before the tornado dissipated. [83] Tornadoes often develop from a class of thunderstorms known as supercells. Supercells contain mesocyclones, an area of organized rotation a few kilometers/miles up in the atmosphere, usually 1.6–9.7km (1–6 miles) across. Most intense tornadoes (EF3 to EF5 on the Enhanced Fujita Scale) develop from supercells. In addition to tornadoes, very heavy rain, frequent lightning, strong wind gusts, and hail are common in such storms. [53] [54] a b Aaron Gleason (December 9, 2021). "Dec 9, 2021 0700 UTC Day 2 Convective Outlook". Storm Prediction Center. Archived from the original on December 11, 2021 . Retrieved December 11, 2021.