The temperature on May 20, 1955 was between 1.6 °C and 10.3 °C and averaged 6.0 °C. There was 2.6 mm of rain during 0.5 hours. There was 8.6 hours of sunshine (54%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
February 18 » Operation Teapot: Teapot test shot "Wasp" is successfully detonated at the Nevada Test Site with a yield of 1.2 kilotons. Wasp is the first of fourteen shots in the Teapot series.
May 18 » Operation Passage to Freedom, the evacuation of 310,000 Vietnamese civilians, soldiers and non-Vietnamese members of the French Army from communist North Vietnam to South Vietnam following the end of the First Indochina War, ends.
May 25 » In the United States, a night-time F5 tornado strikes the small city of Udall, Kansas, killing 80 and injuring 273. It is the deadliest tornado to ever occur in the state and the 23rd deadliest in the U.S.
June 16 » In a futile effort to topple Argentine President Juan Perón, rogue aircraft pilots of the Argentine Navy drop several bombs upon an unarmed crowd demonstrating in favor of Perón in Buenos Aires, killing 364 and injuring at least 800. At the same time on the ground, some soldiers attempt to stage a coup but are suppressed by loyal forces.
August 20 » Battle of Philippeville: In Morocco, a force of Berbers from the Atlas Mountains region of Algeria raid two rural settlements and kill 77 French nationals.
December 8 » The Flag of Europe is adopted by Council of Europe.
When copying data from this family tree, please include a reference to the origin: Gijsbertus Cornelis (Bert) Severijn, "Family tree Severijn", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-severijn/I11441.php : accessed February 6, 2026), "Margaret (Peggy) Morgan (1955-)".
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