1831: The Great Barbados Hurricane was an intense Category 4 hurricane that left cataclysmic damage across the Caribbean and Louisiana in 1831. From August 11 through the 13, Bermudians were amazed to see the sun with a decidedly blue appearance, giving off an eerie blue light when it shone into rooms and other enclosed places. Ships at sea as far west as Cape Hatteras reported that “their white sails appeared a light blue colour.” A month later it was learned that the astounding blue sunlight had coincided with a terrible hurricane that caused 1,477 people to lose their lives. It was assumed that the hurricane was intensive enough to cause an unusual disturbance in the higher atmospheric strata, and refraction, diffraction or absorption of light rays, to cause the blue reflection. Because the sun appeared bluish-green, Nat Turner took this as the final signal and began a slave rebellion a week later on August 21.
Source: NOAA Hurricane Research Division
1987: A succession of thunderstorms produced rainfall that was unprecedented in 116 years of precipitation records at Chicago, Illinois during an 18 hour period from the evening of the 13th to the early afternoon of the 14th. The resulting flash flood was the worst ever to strike the Chicago metropolitan area, causing three deaths and water damage that amounted to 221 million dollars. O’Hare International Airport received an event total of 9.35 inches of rain in 18 hours, shattering the previous 24-hour record of 6.24 inches. For about 24 hours, the airport was only accessible from the air as all roads were blocked by high water, including the Kennedy Expressway.
1991: Stockton, California received 0.05 inch of rainfall on this day. Since 1949, this is the only measured rainfall in Stockton on August 13th.
2003: A string of days in Paris France with temperatures from the 4th to the 12th above 95°F ends when the day’s high drops to 90°F. During the long, hot summer which began 25 July and has registered several days above 100°F, an estimated 14,800 have died from heat-related causes, the French government admits.
Source: NASA’s Earth Observatory.
2014: An official, New York State 24 hour precipitation record was set at Islip, NY on August 12-13 when 13.57″ of rain fell.
— NWS New York NY (@NWSNewYorkNY) August 13, 2017
Source: NWS Office in New York.