August 5 edit
1988: Tropical Storm Alberto became a tropical cyclone at 41.5º N, further north than any other North Atlantic tropical cyclone.
1997: Hurricane Guillermo reached a peak intensity of 919 millibars (27.1 inHg) over the eastern Pacific Ocean, making it the second-strongest Pacific hurricane on record at the time (since surpassed by two other storms).
2011: Typhoon Muifa passed through Okinawa Prefecture, Japan, bringing up to 41 inches (1,000 mm) of rain and sustained winds of 65 knots (75 mph; 120 km/h) to Okinawa Island.