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The National Weather Service on Wednesday confirmed that two more tornadoes touched down in Richmond on Monday afternoon, bringing the preliminary count for the region to seven.

In addition to the newly confirmed twisters in Westover Hills and near Bellevue, meteorologists had said Tuesday that a tornado from the remnants of Hurricane Florence touched down Monday in Mecklenburg County. That means the state’s total is eight.

A team from the weather service’s Wakefield office surveyed the twisted trees and damaged property throughout the Richmond area again on Wednesday, two days after one of the tornadoes killed a man in Chesterfield County and flash flooding took another life in Louisa County.

Because tornado locations are hard to predict more than 20 minutes in advance and most would destroy weather instruments, wind speeds usually can’t be measured in real time. So experts estimate it afterward using radar data and on-site observations of the damage.

Monday’s strongest tornado, which killed a man when a building in its path collapsed, “obliterated” most of the trees in its path and seriously damaged or destroyed property. But the two smaller tornadoes confirmed by experts Wednesday were responsible for only minor property damage, and uprooted or stripped select trees, said Jeff Orrock, meteorologist in charge at the National Weather Service’s Wakefield office.

The tornado teams first try to determine exactly where a tornado touched down and where it stopped, then work to figure out how wide it was.

When measuring on the Enhanced Fujita scale, which scores tornadoes from EF-0 to EF-5 based on wind speed, NWS surveyors generally look at the extent of destruction for 28 different “damage indicators.” Those take into account the type of structure and its materials and note whether fallen or damaged trees were hardwood or softwood.

“There might be a loss of only some material, or it could be there was a complete uplift and a collapse of walls. And there can be a lot of hard or soft damage to trees,” Orrock said. “You use those in conjunction to determine wind speeds in an area.”

“That gives you an idea about the speed, but you also get into construction quality, whether the building is older or newer, and if it’s well-built,” he added. “Once you do that, you can cross reference and place it on the EF schedule.”

The deadly tornado that struck Hull Street Road at Speeks Drive in Chesterfield was the strongest of the day with peak winds of 125 mph, which translates to an EF-2.

The tornado tore the roof off the Old Dominion Floor Co. warehouse, causing it to collapse. One of the company’s employees, Ronnie Bishop, 60, was later found dead. As of Wednesday evening, GoFundMe campaigns set up for Bishop’s family had raised nearly $20,000.

The two additional tornadoes counted Wednesday registered as EF-0 tornadoes.

Orrock said the NWS crew had to focus Tuesday on areas that were more severely affected.

On top of the local severe weather, the Wakefield office has taken over some duties for the neighboring office that serves eastern North Carolina.

The tornado in Westover Hills, which touched down at 4:05 p.m. Monday, tracked for a quarter-mile in the New Kent Road area. Winds of 75 mph snapped numerous trees before the tornado’s track ended near the James River.

In North Richmond, near Bellevue, Monday’s final tornado struck around 4:15 p.m.

It touched down near Westwood Avenue, moved along Lamont Street in Laburnum Park, continued north through Bellevue and ended on Chamberlayne Avenue just south of the Henrico County line. The track was about 1.3 miles long, with peak winds of 85 mph and a path up to 75 yards wide.

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