August 1
1913: Ragnar Fjørtoft, a meteorologist who did pioneering work in numerical weather prediction, was born in Oslo, Norway.
August 2
2005: Air France Flight 358 overran the runway at Toronto Pearson International Airport while attempting to land in a thunderstorm. The aircraft was destroyed in the crash and subsequent fire, but all aboard survived.
August 3
2008: A rare F4 (T8) tornado struck the town of Hautmont, France, killing three people.
August 4
1980: Hurricane Allen reached category 5 strength for the first time in the late evening. Allen was at this strength for a total of almost three days, the longest of any Atlantic hurricane on record, and the third-longest in the world.
August 5
1988: Tropical Storm Alberto became a tropical cyclone at 41.5º N, further north than any other North Atlantic tropical cyclone.
August 6
1753: Georg Wilhelm Richmann an early researcher into electricity and related phenomena, was struck by lightning and killed while conducting experiments in Saint Petersburg.
August 7
1979: Several tornadoes killed 2 people in the Woodstock, Ontario area.
August 8
1899: The "San Ciriaco hurricane" began crossing the island of Puerto Rico, eventually killing more than 3,000 people. The storm had an accumulated cyclone energy of 73.57, the highest on record in the Atlantic basin.
August 9
1993: The NOAA-13 weather satellite was launched into a polar orbit from Vandenberg Air Force Base, California. The satellite only operated for 12 days before a short circuit resulted in a loss of contact and the end of its mission.
August 10
2017: Hurricane Franklin made landfall in Veracruz, Mexico, causing relatively minor damage.
August 11
1999: A rare tornado struck Salt Lake City, Utah, killing one person and injuring more than 100 people.
August 12
2004: Typhoon Rananim moved ashore near Wenling in Zhejiang, China, killing 168 people in the country.
August 13
1916: The dam holding back Lake Toxaway in Transylvania County, North Carolina failed due to severe flooding.
August 14
1812: A tropical cyclone was sighted near Jamaica. This storm would eventually strike New Orleans as a major hurricane, killing around 100 people.
August 15
2008: A tornado outbreak began in southern and central Poland, killing 4 people and damaging hundreds of buildings.
August 16
2003: Hurricane Erika made landfall in the Mexican state of Tamaulipas, causing minor damage and two deaths.
August 17
1915: A major hurricane struck the Galveston, Texas area, killing more than 200 people. However, due to the newly-constructed seawall, only 11 died in Galveston itself.
August 18
2011: A lightning strike sparked the Pagami Creek Fire in northern Minnesota. It would eventually burn 92,000 acres (370 km2), making it the largest naturally occurring fire in the state in more than 100 years.
August 19
1991: Hurricane Bob made landfall in eastern New England, causing more than $2 billion (2006 USD) in damage.
August 20
1886: An intense hurricane completely destroyed the port of Indianola, Texas, leading to the town's relocation further inland.
August 21
1994: Typhoon Fred made landfall in Zhejiang, China, killing more than 1,000 people.
August 22
2016: Typhoon Mindulle made landfall near Tateyama, Chiba, Japan, killing 3 people due to flooding.
August 23
1998: An outbreak of severe weather caused major damage across northern Wisconsin and the Upper Peninsula of Michigan, killing one person.
August 24
1956: Severe flooding began in Mannum, South Australia, after a levee broke outside of town.
August 25
1986: The remnants of Hurricane Charley passed just south of Ireland, causing record rainfall and major flooding which killed four people.
August 26
1995: As part of a hyperactive hurricane season, 5 tropical cyclones existed in the Atlantic basin simultaneously, the only time in history this has ever occurred.
August 27
1989: Hurricane Kiko struck the southern tip of Baja California as a category 3 hurricane, but caused no deaths.
August 28
2012: Typhoon Bolaven struck the Korean Peninsula, killing 19 in South Korea and at least 59 in North Korea.
August 29
2005: Hurricane Katrina pushed an incredible storm surge onshore in Louisiana, Mississippi, and Alabama, killing almost 2,000 people and causing more than $80 billion in damage. It was the costliest Atlantic hurricane in history, as well as the deadliest in the United States since the 1928 Okeechobee Hurricane.
August 30
2008: Hurricane Gustav made landfall in Pinar del Río Province, Cuba. A weather station recorded a wind gust of 184 knots (212 mph; 341 km/h), which at the time was thought to be the strongest wind gust from a tropical cyclone on record.
August 31
1952: Hurricane Able moved ashore near Beaufort, South Carolina, causing flooding and heavy crop damage.