Annual precipitation is ample. From November to March, thunderstorms are common over Brisbane, with the more severe events accompanied by large damaging hail stones, torrential rain and destructive winds. On an annual basis, Brisbane averages 124 clear days. Dewpoints in the summer average at around ; the apparent temperature exceeds on almost all summer days. Brisbane's wettest day occurred on 21 January 1887, when of rain fell on the city, the highest maximum daily rainfall of Australia's capital cities. The wettest month on record was February 1893, when of rain fell, although in the last 30 years the record monthly rainfall has been a much lower from December 2010. Very occasionally a whole month will pass with no recorded rainfall, the last time this happened was August 1991. The city has suffered three major floods since its founding, in February 1893, January 1974 (partially a result of Cyclone Wanda), and January 2011 (partially a result of Cyclone Tasha).