Historical Events in the Chicago Area on July 23

Union Oil Co. Refinery Explosion, 1984

On July 23, 1984, a tragic incident occurred at the Union Oil Co. refinery in Romeoville. An explosion resulted from a vapor leak in a tower processing crude oil into gasoline. The force of the explosion destroyed the top 45 feet of the tower. The fire burned for over a day, causing millions in property damage. Seventeen people lost their lives.

Weather Records in Chicago

According to the National Weather Service in Chicago, several weather records have been noted on this date over the years:

• High temperature: 99 degrees in 1914
• Low temperature: 51 degrees in 1947
• Precipitation: 6.86 inches in 2011
• Snowfall: Trace expected in 2024

The Great Railroad Strike, 1877

Chicago played a significant role during the national railroad strike in 1877. The industrial dispute began in West Virginia and led to clashes in Chicago. Workers sought an eight-hour workday and faced violent confrontations with authorities. The conflict, known as “The Battle of the Viaduct,” resulted in 30 protester deaths.

Chicago Auto Show, 1903

In 1903, E. Pfennig, a Chicago doctor, purchased Ford’s first Model A for $850. His payment helped the nascent company, which had limited funds at that time.

Chicago Water Carnival, 1922

The first Chicago Water Carnival took place on July 23, 1922. The event, organized by the Tribune, featured the Lincoln Park Boat Club, which excelled in the top rowing events. Over 75,000 spectators attended.

Union Station Grand Opening, 1925

Chicago’s Union Station officially opened in 1925. It featured dining facilities, a nursery, and spaces for spiritual and medical needs. Renowned Harvey Girls served in dining areas.

Burke’s Law Ordinance, 1975

In 1975, the City Council passed a measure prohibiting nudity in massage parlors. Known as “Burke’s Law,” this ordinance was proposed by Alderman Edward Burke.

Wagering Bill for Out-of-State Races, 1981

Governor James Thompson signed a bill in 1981 allowing betting on out-of-state races. Arlington Park became the first to implement this with the Travelers Stakes later that year.

Mark Buehrle’s Perfect Game, 2009

Mark Buehrle of the Chicago White Sox pitched a perfect game against the Tampa Bay Rays on July 23, 2009. The White Sox secured a 5-0 victory. This performance marked the 18th perfect game in major league history. White Sox pitchers have achieved more no-hitters than any other team in the American League.