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February 24 — A 240 feet (73 m) section of the Cooper River Bridge is “carried away” by high winds, killing five people during the destruction.
March
March 16 — A long-tracked thundersquall, a combination of a thunderstorm and a squall, kills ten people, destroys 78 homes, and damaged 94 others. It was noted by the United States Weather Bureau that the houses were “rural negro dwellings”. The thundersquall traveled at least 60 miles (97 km).
March 22 — A violent tornado estimated at F4 intensity struck near Wynona, Oklahoma, where it destroyed 15 homes and a power plant and damaged ten other homes. A 500 pounds (230 kg) piece of machinery was carried 0.5 miles (0.80 km) by the tornado.
April
April 21 — A tornado strikes around Timber Lake, South Dakota, causing $150,000 in property damage. (1946 USD) in property damage throughout the city. This tornado did not receive an estimated rating on the Fujita scale from Thomas P. Grazulis, meaning it was believed to have been F0 or F1 intensity. The U.S. Weather Bureau published a paper in 1946 which stated the width of this tornado was 4 miles (6.4 km), which would make this the widest tornado ever documented in history, beating the 2013 El Reno tornado.
May
May 10 – An intense tornado, estimated at F3 intensity, struck around Eufaula, Oklahoma, killing one person, injuring five others, and it damaged or destroyed 18 structures.
May 15 – A violent tornado, estimated at F4 intensity, struck south of Loraine before striking the community of Champion, where it killed a person, injured two others, and leveled several homes, including one that was newly built.
May 18 – A violent tornado, estimated at F4 intensity, strikes Stoneburg, Texas. Along the tornado's 30 miles (48 km) path, it kills three people and obliterates a church, where a linen scarf was untouched that laid on the pulpit. An hour later a second violent tornado, also estimated at F4 intensity, struck around Sanger, Texas, killing a nine-year-old girl.
June 7 – An intense tornado, estimated at F3 intensity, struck Froid, Montana, where it "nearly leveled" a five-room farmhouse, destroyed a second farmhouse, killed one person and injured another.
June 17 — A violent F4 tornado impacts the city of Windsor, Ontario, killing at least 17 people and causing $9.6 million (1946 CAD) in damage. This tornado was one of two officially rated F4 tornadoes during the year.
July 23 – A brief tornado struck around Concord, New Hampshire, killing one person. A 150-foot section of a steel and brick building was leveled, several pieces of machinery were destroyed and army vehicles from a National Guard Arsenal were damaged.
August
August 17 — A violent tornado estimated at F4 intensity, struck the Green Gables camp southwest of Mankato, Minnesota, killing 11 people and injuring 100 others. Multiple cars were thrown at least 500 feet (170 yd; 150 m) and a 54,000 pounds (24,000 kg) road grader was thrown 100 feet (33 yd; 30 m). Later in the day, a second violent tornado, also estimated at F4 intensity, struck Wells, injuring 30 people.
August 20 — A large and violent tornado strikes Kłodzko, Poland, with an estimated intensity of F2–F4 on the Fujita scale. A few hours later, a large, deadly tornado, rated F3 by the European Severe Storms Laboratory, struck Stronie Śląskie and Stójków in Poland, killing one person and leaving ten missing. In an academically peer reviewed paper published in 2017, the tornado (combined) was rated F3/F4. This was one of two officially rated F4 tornadoes during the year.
September
September 5 — Multiple thundersqualls, a combination of a thunderstorm and a squall, kill one person in Minnesota.
September 18–27 — Typhoon Querida kills 154 people and destroys over 373,000 houses in Taiwan.
October
October 5–14 — The 1946 Florida hurricane kills five people in Cuba and causes $5.2 million (1946 USD) in damage in the state of Florida.
^ Dipankar C. Patnaik & N. Sivagnanam (November 2007). "Disaster Vulnerability of Coastal States: A Short Case Study of Orissa, India". Social Science Research Network: 4. SSRN1074845. {{cite journal}}: Cite journal requires |journal= (help)
^ Grazulis, Thomas P. (1993). Significant tornadoes, 1680–1991: A Chronology and Analysis of Events. St. Johnsbury, Vermont: Environmental Films. pp. 922–925. ISBN1-879362-03-1.