200,000-300,000 population

more than 500,000 population

100,000-200,000 population

Flood (peak) 11 March 1841,Flood (peak) 4 March 1929 (A 2nd peak was on 3/16/1929),100,000-200,000 population

Fire, major 21 April 1930 (320 killed in Ohio State Penitentiary fire),more than 500,000 population

100,000-200,000 population

100,000-200,000 population

300,000-400,000 population

100,000-200,000 population

300,000-400,000 population

00 AM,70,000-100,000 population

Explosion 20 October 1944 (130 killed when liquid-gas tanks exploded),more than 500,000 population

100,000-200,000 population

200,000-300,000 population

Plane crash 25 May 1979 (Killed 272 aboard and 3 on the ground),Conflagration 8 October 1871 ("Chicago Fire" killed 250, destroyed 17,450 buildings, $196 million damage),Fire, major 30 December 1903 (602 killed in Iroquois Theater fire),Train accident 30 October 1972 (45 killed & over 200 injured when 2 cummuter trains collided),Heat wave (peak) 14 July 1995 (560 died in Chicago in record heat wave),more than 500,000 population

200,000-300,000 population

more than 500,000 population

Tornado 4 April 1977 (F5 on the Fujita scale),200,000-300,000 population

100,000-200,000 population

Conflagration 9 November 1872 (800 buildings destroyed, $75 million damage),Fire, major 28 November 1942 (491 killed in Coconut Grove nightclub fire),more than 500,000 population