The 1933 Atlantic hurricane season was the second most active Atlantic hurricane season on record, with 20 storms forming in the northwest Atlantic Ocean. The season ran through the summer and the first half of fall in 1933, with activity as early as May and as late as November. A tropical cyclone was active for all but 13 days from June 28 to October 7. The year was surpassed in total number of tropical cyclones by the 2005 season, which broke the record with 28 storms. Tropical cyclones that did not approach populated areas or shipping lanes, especially if they were relatively weak and of short duration, may have remained undetected. Because technologies such as satellite monitoring were not available until the 1960s, historical data on tropical cyclones from this period are often not re