Thunderstorm Wind, Venango
- When
- September 9, 3:05 PM EST
- Where
- Venango County, Rocky Grove
- Property damage
- $1,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.420, -79.820
Thunderstorm winds downed a large tree.
Damaging Winds in Pennsylvania, September 9 to 29, 1999
13 thunderstorm wind, 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
- $41,000
- Crop damage
- None recorded
- Events
- 13
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 radar
The Pittsburgh radar (KPBZ), 104 km away, was scanning. The volume nearest the first event began at 20:05 UTC.
Event by event
13 thunderstorm wind. Local standard time, as filed.
Thunderstorm Wind, Forest
- When
- September 9, 3:50 PM EST
- Where
- Forest County, 3 mi NE of Tionesta
- Property damage
- $10,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.530, -79.430
Thunderstorm winds downed several trees along Dawson Run Road. One tree fell onto a garage.
Thunderstorm Wind, Washington
- When
- September 29, 2:45 PM EST
- Where
- Washington County, Canonsburg
- Property damage
- $3,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.250, -80.200
Thunderstorm winds downed several trees and power lines.
Thunderstorm Wind, Allegheny
- When
- September 29, 3:04 PM EST
- Where
- Allegheny County, Pittsburgh
- Measured
- 54 kt (62 mph)
- Reported by
- BROADCAST MEDIA
- Coordinates
- 40.430, -79.980
WPXI-TV in Pittsburgh recorded a 62 MPH wind gust.
Thunderstorm Wind, Beaver
- When
- September 29, 3:20 PM EST
- Where
- Beaver County, Ambridge
- Property damage
- $3,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.600, -80.230
Thunderstorm winds downed several trees and power lines.
Thunderstorm Wind, Beaver
- When
- September 29, 3:30 PM EST
- Where
- Beaver County, 4 mi N of Frankfort Spgs
- Property damage
- $1,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.530, -80.450
Thunderstorm winds downed a large tree onto Hanover-Kendal Road.
Thunderstorm Wind, Butler
- When
- September 29, 3:40 PM EST
- Where
- Butler County, 5 mi S of Zelienople
- Property damage
- $3,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.730, -80.130
Thunderstorm winds downed several large trees.
Thunderstorm Wind, Lawrence
- When
- September 29, 3:40 PM EST
- Where
- Lawrence County, Ellwood City
- Property damage
- $3,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.870, -80.280
Thunderstorm winds downed several large trees and power lines.
Thunderstorm Wind, Butler
- When
- September 29, 3:45 PM EST
- Where
- Butler County, Middle Lancaster
- Property damage
- $3,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.850, -80.120
Thunderstorm winds downed several large trees.
Thunderstorm Wind, Venango
- When
- September 29, 4:20 PM EST
- Where
- Venango County, Cranberry
- Property damage
- $3,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.350, -79.720
Thunderstorm winds downed several large trees and power lines.
Thunderstorm Wind, Mercer
- When
- September 29, 4:20 PM EST
- Where
- Mercer County, Mercer
- Property damage
- $3,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.230, -80.230
Thunderstorm winds downed several trees and power lines.
Thunderstorm Wind, Venango
- When
- September 29, 4:20 PM EST
- Where
- Venango County, Emlenton Station
- Property damage
- $3,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.180, -79.720
Thunderstorm winds downed several trees and power lines.
Thunderstorm Wind, Armstrong
- When
- September 29, 5:15 PM EST
- Where
- Armstrong County, Kiskimere
- Property damage
- $5,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.620, -79.580
Thunderstorm winds downed trees and power lines in Kiskimere, as well as the Gilpin and Parks Township areas.
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
- Wildfire in California, September 9 to 11, 1999
- Flash Flooding and Hail in Virginia, September 9, 1999
- Hail and Damaging Winds in North Carolina, September 9, 1999
- Lightning Strike in California, September 9, 1999
- Flash Flooding and Damaging Winds in Maryland, September 9, 1999
- Flash Flooding and Damaging Wind in Virginia, September 9, 1999
- Hail and Damaging Wind in Pennsylvania, September 9, 1999
- Heavy Rain in Pennsylvania, September 9, 1999
- Funnel Clouds and Waterspout in Wisconsin, September 9, 1999
- Flash Flooding in Pennsylvania, September 9, 1999
- Dust Storm in Nevada, September 9, 1999
- Hail and Damaging Wind in Georgia, September 9, 1999
More
Every storm in Pennsylvania in 1999Every state in 1999This day in weather historyWarnings in Pennsylvania, September 1999
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: 5714873, 5714874, 5714875, 5714876, 5714877, 5714878, 5714879, 5714881, 5714880, 5713272, 5714882, 5714883, 5713273.