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This was one of the most intense December outbreaks in the Contiguous United States and the most intense Illinois tornado outbreak in any month. An F4 tornado struck Mt. Vernon, Illinois, an F5 tornado obliterated Sunfield, Illinois, and a long-tracked F4 struck several towns hit by the 1925 Tri-State tornado. An additional F4 tornado hit ...
Based on the 1991–2020 average, about 39 tornadoes are typically recorded across the United States during January, about 36 tornadoes are recorded in February, and about 80 tornadoes are recorded in March. [ 2 ] These tornadoes are commonly focused across the Southern United States due to their proximity to the unstable air mass and warm ...
Since its initial usage in May 1999, the National Weather Service (NWS) in the United States has used the tornado emergency bulletin, an unofficial, high-end classification of tornado warning—sent through either the issuance of a warning or via a "severe weather statement" that provides updated information on an ongoing warning—that is issued when a violent tornado (confirmed by radar or ...
This page documents all tornadoes confirmed by various weather forecast offices of the National Weather Service in the United States in August, September and October 2024. . Tornado counts are considered preliminary until final publication in the database of the National Centers for Environmental Informati
From April 1 through April 3, a derecho [71][72] and significant tornado outbreak occurred primarily in the Central Plains, Mississippi Valley, Ohio Valley, and Mid-Atlantic. On April 1, a moderate risk for severe weather was issued across parts of Oklahoma and Texas, including a 10% hatched area for tornadoes.
The 2011 Super Outbreak was the largest tornado outbreak spawned by a single weather system in recorded history; it produced 367 tornadoes from April 25–28, with 223 of those in a single 24-hour period on April 27 from midnight to midnight CDT, [6] [13] fifteen of which were violent EF4–EF5 tornadoes. 348 deaths occurred in that outbreak, of which 324 were tornado related.
On average, there are 66 confirmed tornadoes in the United States in September, 59 in October, 54 in November and 28 in December. [ 2 ] In September, tornadoes are most likely to occur in relation to the Atlantic hurricane season (as September is the peak month of hurricane season), and they can occur almost anywhere in the southern and eastern ...
Appearance. Tornado warnings and confirmations in December 2021. This page documents all tornadoes confirmed by various weather forecast offices of the National Weather Service in the United States in December 2021. In December, tornadoes are most likely in the southern states due to their proximity to the unstable airmass and warm waters of ...
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