Thunderstorm Wind, Frederick
- When
- July 19, 2:20 PM EST to 2:30 PM EST
- Where
- Frederick County, Rosemont to 1 mi W of Brunswick
- Property damage
- $25,000
- Crop damage
- $50,000
- Coordinates
- 39.330, -77.650
Damaging Wind in Maryland, July 19, 1996
The supercell which was producing weak to moderate tornadoes across southern Washington and Frederick Counties had an associated rear-flank downburst which struck immediately west of the tornado track. Numerous trees were uprooted or snapped over a wide area from just west of Rosemont to the banks of the Potomac River.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $25,000
- Crop damage
- $50,000
- Events
- 1
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.
What happened
The episode as NWS LWX wrote it up.
The supercell which was producing weak to moderate tornadoes across southern Washington and Frederick Counties had an associated rear-flank downburst which struck immediately west of the tornado track. Numerous trees were uprooted or snapped over a wide area from just west of Rosemont to the banks of the Potomac River. Wind speeds maximized along the shoreline, likely a result of a channeling effect through the mountain gap just east of Harpers Ferry, WV. Power outages were substantial in these areas; 10,000 customers in Loudoun Co Virginia and Frederick Co Maryland were briefly without electricity.
The radar
The national radar mosaic for the moment the first event began.
Event by event
1 thunderstorm wind. Local standard time, as filed.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornado in Maryland, July 19, 1996
- Flash Flood in Pennsylvania, July 19, 1996
- Flash Flood in Pennsylvania, July 19, 1996
- Tornadoes in Pennsylvania, July 19, 1996
- Flash Flood in Pennsylvania, July 19, 1996
- Tornado in Maryland, July 19, 1996
- Flash Flood in Pennsylvania, July 19, 1996
- Flash Flood in Ohio, July 19 to 20, 1996
- Rip Current in Florida, July 19, 1996
- Tornadoes in Pennsylvania, July 19, 1996
- Flash Flood in Kentucky, July 19 to 20, 1996
- Flash Flood in Kentucky, July 19, 1996
More
Every storm in Maryland in 1996Every state in 1996This day in weather historyWarnings in Maryland, July 1996
Sources
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: 5568060.