Thunderstorm Wind, Frederick
- When
- July 28, 3:07 PM EST to 3:15 PM EST
- Where
- Frederick County, East Portion
- Injuries
- 1 direct, 0 indirect
- Property damage
- $100,000
- Coordinates
- 39.170, -78.150
A squall line, which originated from an individual thunderstorm in southwest Pennsylvania, produced scattered wind damage across northern Virginia during the late afternoon as it raced across the region. The most impacting damage occurred in Frederick Co, where numerous trees and wires were blown down in the Winchester area.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LWX wrote it up.
A squall line, which originated from an individual thunderstorm in southwest Pennsylvania, produced scattered wind damage across northern Virginia during the late afternoon as it raced across the region. The most impacting damage occurred in Frederick Co, where numerous trees and wires were blown down in the Winchester area. One of those trees became an airborne missile, crashing through an automobile windshield and slightly injuring the 30-year old female driver. In Clarke Co, several trees and large limbs were felled in the Berryville area, including one onto the historic home of George Washington's adopted daughter. Numerous wires were reported down as well.Dozens of other trees and large limbs fell in western Loudoun co, northern Fauquier Co, and Arlington Co. In western Loudoun Co, a large limb just missed striking a country inn; a picnic table was tossed from one yard to another. The Northern Virginia Electric Cooperative reported 3800 customers were without power during the peak of the storm. Some of the limbs that fell blocked roads; most notably federal route 340 near Berryville.In Arlington Co, a man and woman were struck by lightning in the Pentagon's parking lot; the man remained in serious condition that evening. Large limbs fell onto the George Washington Parkway at Spout Run. At least 14,000 customers were without power during the peak of the storm in the northern Virginia suburbs.
The Sterling radar (KLWX), 61 km away, was scanning. The volume nearest the first event began at 20:07 UTC.
5 thunderstorm wind, 1 hail, 1 lightning. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 1997Every state in 1997This day in weather historyWarnings in Virginia, July 1997
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5611095, 5611096, 5611097, 5611098, 5611099, 5611100, 5611101.