The database currently contains data from January 1950 to August 2020, as entered by NOAA's National Weather Service (NWS).Bulk data are available in comma-separated files (CSV). T.S. The following disasters are considered historical because of how they impacted the way we handle similar disasters in the future. Share sensitive information only on official, secure websites.. Following is a list of ten of the deadliest disasters in recorded history, from lowest to highest estimated death toll. Throughout FEMA’s history there have been disasters that have caused massive change in legislation and, in some cases, have been catastrophic enough to cause FEMA to reshape the way it operates. There is debate as to what the deadliest disasters of all time actually are, due to discrepancies in death tolls, especially with disasters that occurred outside of the last century. The Aug. 10 storm, which hit Iowa the hardest and also impacted Illinois, Ohio, Minnesota and Indiana, was the most costly thunderstorm in U.S. history, the Washington Post says. Allison was the costliest and deadliest tropical storm in U.S. history, causing 55 deaths and over $10 billion in damage. It also caused a federal emergency declaration in Arkansas and Missouri and impacted parts of Oklahoma, Illinois, Indiana and West Virginia. Each year, an estimated 100,000 thunderstorms occur in the United States. Top Ten Worst Disasters in the World . It sat over Texas for days, dumping over 35 inches of rain in Houston, the city that received the brunt of the damage. The storm became the worst natural disaster in Kentucky history. Thunderstorms are common occurrences in the Midwest and Central United States. A locked padlock) or https:// means you’ve safely connected to the .gov website. The deadly ice storm of 2009 left more than a million homes and businesses without power and 55 dead. Natural disasters A natural disaster is a major adverse event resulting from natural processes of the earth. Hurricane Dorian was an extremely powerful and devastating Category 5 Atlantic hurricane, that became the most intense tropical cyclone on record to strike the Bahamas, and is regarded as the worst natural disaster in the country's history. These files can be viewed in Excel and other spreadsheet applications. It formed into a tropical storm on June 5, 2001, and made landfall west of Galveston that night. Florida Disaster History Hurricanes Year Date Disaster 2018 10/10 Hurricane Michael 2017 09/10 Hurricane Irma 2005 10/24 Hurricane Wilma 2005 08/28 Hurricane Katrina 2005 07/10 Hurricane Dennis 2004 09/26 Hurricane Jeanne 2004 09/16 Hurricane Ivan 2004 09/04 Hurricane Frances 2004 08/13 Hurricane Charley and Tropical Storm Bonnie 1999 10/20 Hurricane Irene 1999 09/22 Hurricane … (Image credit: Danny Alvarez/Shutterstock) If Aleppo's death toll is mistaken, the earthquake that hit Haiti on Jan. 12, 2010, may be a contender for the top 10 deadliest disasters. These lists are of disasters caused by forces of nature . Storm Events Database Bulk Data Download.