Key moments
On March 19, 2018, a significant weather event unfolded as supercell thunderstorms unleashed hailstones larger than grapefruit across northern Alabama. This unprecedented storm set the state’s first official hail record, marking a notable moment in meteorological history.
The National Weather Service confirmed that one of the hailstones measured an astonishing 5.38 inches in diameter and weighed 9.8 ounces. This record-breaking event was particularly striking, as Alabama had no recognized official hail size record prior to this storm, with the largest known hailstone previously measuring only 4.25 inches.
In a related development, a six-inch hailstone was reported in Kankakee, Illinois, which could potentially break the current state record of 4.75 inches set in June 2015. These occurrences highlight the increasing severity and frequency of hail-producing storms across the Midwest.
Hail can pose significant risks, damaging aircraft, homes, and vehicles, and can even be deadly to livestock and people. The formation of hail occurs when raindrops are lifted by thunderstorm updrafts into extremely cold areas of the atmosphere, where they freeze together, creating the large stones that can fall during severe storms.
Historically, supercell thunderstorms are known for their sustained updrafts that support the formation of large hail. These storms can repeatedly lift hailstones into very cold air, allowing them to grow larger before falling to the ground. Storms producing hail one inch or greater are classified as severe, and there have been instances in the U.S. where hailstorms have resulted in damages exceeding $1 billion.
The costliest storm on record occurred on April 10, 2001, resulting in property damage exceeding $2.5 billion in 2018 dollars. Such figures underscore the economic impact of severe weather events and the importance of monitoring and preparing for hailstorms.
As meteorologists continue to study these phenomena, the recent developments in Alabama and Illinois have prompted discussions about weather preparedness and the need for updated records. Official statements from local weather services emphasize the importance of staying informed during severe weather events.
Details remain unconfirmed regarding the full extent of damages caused by the recent hailstorms, but the records set in Alabama and Illinois serve as a reminder of the power of nature and the ongoing challenges posed by severe weather.