The temperature on February 16, 1911 was between -1.5 °C and 7.4 °C and averaged 3.6 °C. There was 6.2 mm of rain. The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
May 23 » The New York Public Library is dedicated.
May 31 » The President of Mexico Porfirio Díaz flees the country during the Mexican Revolution.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
September 25 » An explosion of badly degraded propellant charges on board the French battleship Liberté detonates the forward ammunition magazines and destroys the ship.
November 3 » Chevrolet officially enters the automobile market in competition with the Ford Model T.
When copying data from this family tree, please include a reference to the origin: Tineke Fopma, "Family tree Fopma/Bouma", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-fopma-bouma/I210194.php : accessed June 20, 2024), "Arnoldus Sjoerds Koopmans (1889-????)".
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