Tornado, Montgomery
- When
- August 3, 5:40 PM EST
- Where
- Montgomery County
- Rating
- F1
- Path length
- 3 mi
- Path width
- 100 yd
- Property damage
- $2.5 million
- Coordinates
- 40.080, -75.300
Tornadoes and Hail in Pennsylvania, August 3, 1991
3 thunderstorm wind, 2 tornado, 1 hail, as filed by the National Weather Service.
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
- $5.0 million
- Crop damage
- None recorded
- Events
- 6
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.
Event by event
3 thunderstorm wind, 2 tornado, 1 hail. Local standard time, as filed.
Tornado, Philadelphia
- When
- August 3, 5:40 PM EST
- Where
- Philadelphia County
- Rating
- F1
- Path length
- 2 mi
- Path width
- 100 yd
- Property damage
- $2.5 million
- Coordinates
- 40.070, -75.270
Hail, Chester
- When
- August 3, 5:05 PM CST
- Where
- Chester County
- Measured
- 1 in hail
- Coordinates
- 40.030, -75.680
Thunderstorm Wind, Montgomery
- When
- August 3, 5:25 PM CST
- Where
- Montgomery County
- Coordinates
- 40.080, -75.380
Thunderstorm Wind, Philadelphia
- When
- August 3, 5:50 PM CST
- Where
- Philadelphia County
- Measured
- 57 kt (66 mph)
- Coordinates
- 40.070, -75.000
Thunderstorm Wind, Montgomery
- When
- August 3, 6:00 PM CST
- Where
- Montgomery County
- Coordinates
- 40.130, -75.070
What these are
- Tornado
- A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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 and Hail in Illinois, August 3, 1991
- Tornado and Hail in Indiana, August 3, 1991
- Hail and Damaging Winds in Missouri, August 3, 1991
- Damaging Winds in Ohio, August 3, 1991
- Damaging Winds in Kentucky, August 3, 1991
- Hail and Damaging Winds in New Jersey, August 3, 1991
- Hail in Arizona, August 3, 1991
More
Every storm in Pennsylvania in 1991Every state in 1991This day in weather historyThe tornado archive for Pennsylvania, 1991Warnings in Pennsylvania, August 1991
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: 10117578, 10117579, 10117576, 10117577, 10117580, 10117581.