Property damage was in excess of $2.5 billion in 2018 dollars.įigure 1. The costliest storm appears to be that of April 10, 2001, which cut a swath along the I-70 corridor from eastern Kansas to southwestern Illinois and pounded the St.
There have been a handful of hailstorms that resulted in $1 billion or more in damages in the U.S. history, along with a summary of the largest hailstones yet observed. Here is a recap of the costliest and deadliest hailstorms in U.S. On March 19, a severe thunderstorm pummeled Walter, Alabama, with hailstones up to 5.38” in diameter, the largest such ever reported in the state’s history and now sanctified as such by the State Climate Extremes Committee. Requests for certified, official copies of storm reports must be made to the NCEI, not local National Weather Service offices.Above: Craig Mann of Cullman, Alabama, displays the hailstone he collected in nearby Walter on March 19, 2018, that measured over 5” in diameter (officially 5.38”), thus entering the record books as the largest hailstone ever collected in Alabama history. If an event or damage isn’t listed in either the publication or the database, it was not reported to the National Weather Service. The database includes tornadoes since 1950, severe thunderstorms since 1955, and all other weather events since 1996.īoth the “Storm Data” publication and reports in the Storm Events Database are available 90 to 120 days after the event. This site allows users to search for particular events by specifying the state, county, date(s) and type of events. The data is also available from the national Storm Events Database. The information is collected by local National Weather Service offices from damage surveys, emergency managers, law enforcement agencies, cooperative observers, “SKYWARN” spotters, news media, and the insurance industry. The “Storm Data” publication is free online in Portable Document Format (PDF), so a PDF viewer is required to view and print these files.
The detailed reports include the location, time, magnitude (hail size, wind speeds, snowfall) and any property or crop damage, injuries, and deaths. " Storm Data" is a monthly publication that contains a chronological listing, by state, of severe storms such as tornadoes, thunderstorm wind gusts, hail, lightning, floods, winter storms, high winds, hurricanes, extreme cold spells and heat waves, and other unusual weather phenomena. Storm reports from the National Center for Environmental Information (NCEI) are available in two different formats:
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