June US convective storms to cost nearly $6 billion

In a stark reminder of the growing cost of extreme weather, insurers are estimated to have shouldered some $6 billion in losses from a severe convective storm outbreak in June that generated thousands of reports of hail and damaging wind gusts in Central and Southern states of the US.

According to the analysis by Boston-based Karen Clark & Company (KCC), there have been 1,557 reports of hail, 93 reports of tornadoes, and 2,719 reports of damaging wind gusts from this event. 

Overall losses have been estimated by KCC at some $5.5 billion, with 25 states impacted.

KCC added that the prolonged severe weather system that began on June 10th and persisted until June 19th resulted in over one thousand reports of hail and damaging wind gusts throughout the Central and Southern US.

The catastrophe modeller noted that dozens of instances of softball-sized hail were reported across Texas, Arkansas, Mississippi, and Georgia and extreme wind gusts exceeding hurricane force were measured throughout the South.

While hail and winds were the dominant features of this event, several damaging tornadoes also formed.

The catastrophe modeller suggests that Texas experienced the most damage, followed by Arkansas, Oklahoma, Mississippi, Louisiana, and Alabama.

Of the 1,557 hail reports, more than 18% were severe ( over 2 inches in diameter). Large hail in Mississippi and Arkansas also came close to state records of 5 inches.

The largest hailstone recorded from this event fell in Wheeler County, Texas on June 13th and measured 5.5 inches.

KCC added: “The Dallas Metroplex had severe hail from recurring supercell thunderstorm activity spanning a few days within this event, including several reports of softball-sized hail. Over 40 hurricane-force wind gusts were reported across the South throughout the event.”

“Supercell thunderstorms organised into a mesoscale convective system and tracked across the state of Oklahoma that produced a 100 mph wind gust near Tulsa.”

“Two confirmed EF-3 tornadoes formed during the event, each of which tracked 7 miles and caused damage to homes and businesses – one in Perryton, TX and a second in Louin, MS.”