1784: Deadly hailstorm in South Carolina hits the town of Winnsborough. The hailstones, measuring as much as nine inches in circumference, killed several persons, and a great number of sheep, lambs, and birds.
1902: On May 7th, Martinique’s Mount Pelee began the deadliest volcanic eruption in the 20th century. On this day, the city of Saint Pierre, which some called the Paris of the Caribbean, was virtually wiped off the map. The volcano killed an estimated 30,000 people.
1965: The strongest tornado recorded in South Dakota tracked across eastern Tripp County. It was part of a larger tornado outbreak in Nebraska and South Dakota during the afternoon through late evening hours.
1979: Widespread damage occurred in the Tampa Bay area. The 19 tornadoes reported are the most in one day in Florida history. Three people drowned in Pinellas County where flooding was most severe. Rainfall amounts of 18 inches in 24 hours were reported with 12.73 inches falling at Tampa, FL; with 7.84 inches of that in just six hours. Worst hit was the Polk County community of Auburndale where a tornado made a direct hit on the Auburndale School. Only eight students were hurt by flying debris. An 83-year-old woman was killed as she hid in an unreinforced concrete block storage shed. 98 trailers were damaged or destroyed, and 40 people were injured.
2003: This was the second of three consecutive days with strong to violent tornadoes around Oklahoma City. A violent F4 tornado that affected Moore, Oklahoma City, Midwest City and Choctaw took on a path very similar to the 5/3/1999 devastating tornado. This particular storm back in 2003 affected areas from Newcastle and Moore to Del City and Choctaw. Although over 130 people were injured, there were no fatalities.
Radar image of the Moore/Oklahoma City supercell around 5:25 PM, CDT on May 8, 2003. The storm was at its peak intensity in southeastern Oklahoma City. Image courtesy of the NWS Office in Norman, OK.
Source: NWS Office in Norman, Oklahoma.
2009: A deadly derecho squall line crosses far southern Illinois at midday devastating the Carbondale area on its way across a 1,200-mile swath of terrain covering sections of nine states. Hundreds of homes and businesses are damaged or destroyed in Kansas, Kentucky, Illinois, Kentucky, and Missouri. The wind gusts to 106 mph in the Carbondale area with sustained winds measured at up to 90 mph. In southern Illinois, the storm system peels siding and roofs off homes and other buildings, blowing out car windows and tearing up trailer parks.
Source: The Storm Prediction Center.
— Matt Lanza (@mattlanza) May 23, 2017