Tornadoes and Hail in Pennsylvania, July 23, 1991

Name: Tornadoes and Hail in Pennsylvania, July 23, 1991
Start: 1991-07-23T10:00
End: 1991-07-23T15:55
Location: Pennsylvania

July 23, 1991 · NWS PIT · 42 events in 26 counties and zones

36 thunderstorm wind, 3 tornado, 3 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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 3
Property damage: $253,000
Crop damage: None recorded
Events: 42

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

36 thunderstorm wind, 3 tornado, 3 hail. Local standard time, as filed.

Thunderstorm Wind, McKean

When: July 23, 10:00 AM CST
Where: McKean County
Coordinates: 41.970, -78.650

Thunderstorm Wind, McKean

When: July 23, 10:15 AM CST
Where: McKean County
Coordinates: 41.950, -78.400

Thunderstorm Wind, Mercer

When: July 23, 10:45 AM CST
Where: Mercer County
Coordinates: 41.130, -80.370

Tornado, Lawrence

When: July 23, 11:00 AM CST
Where: Lawrence County
Rating: F0
Path length: 2 mi
Path width: 17 yd
Property damage: $250,000
Coordinates: 41.020, -80.470

Thunderstorm Wind, Tioga

When: July 23, 11:12 AM CST
Where: Tioga County
Coordinates: 41.750, -77.300

Tornado, Butler

When: July 23, 11:30 AM CST
Where: Butler County
Rating: F0
Path length: 0.1 mi
Path width: 13 yd
Property damage: $250
Coordinates: 40.700, -80.020

Thunderstorm Wind, Butler

When: July 23, 11:30 AM CST
Where: Butler County
Coordinates: 40.750, -79.800

Thunderstorm Wind, Bradford

When: July 23, 11:37 AM CST
Where: Bradford County
Coordinates: 41.650, -76.850

Thunderstorm Wind, Tioga

When: July 23, 11:44 AM CST
Where: Tioga County
Coordinates: 41.750, -77.300

Thunderstorm Wind, Elk

When: July 23, 12:00 PM CST
Where: Elk County
Coordinates: 41.430, -78.750

Thunderstorm Wind, Centre

When: July 23, 12:04 PM CST
Where: Centre County
Measured: 83 kt (96 mph)
Coordinates: 40.780, -77.850

Thunderstorm Wind, Allegheny

When: July 23, 12:15 PM CST
Where: Allegheny County
Coordinates: 40.430, -79.980

Thunderstorm Wind, Bradford

When: July 23, 12:26 PM CST
Where: Bradford County
Coordinates: 41.670, -76.170

Thunderstorm Wind, Lycoming

When: July 23, 12:29 PM CST
Where: Lycoming County
Coordinates: 41.220, -77.030

Thunderstorm Wind, Mifflin

When: July 23, 12:30 PM CST
Where: Mifflin County
Coordinates: 40.500, -77.820

Thunderstorm Wind, Wayne

When: July 23, 12:30 PM CST
Where: Wayne County
Coordinates: 41.430, -75.270

Thunderstorm Wind, Union

When: July 23, 12:30 PM CST
Where: Union County
Coordinates: 40.900, -77.150

Tornado, Lackawanna

When: July 23, 1:30 PM EST
Where: Lackawanna County
Rating: F1
Path length: 0.2 mi
Path width: 50 yd
Property damage: $3,000
Coordinates: 41.380, -75.600

Thunderstorm Wind, Huntingdon

When: July 23, 12:35 PM CST
Where: Huntingdon County
Coordinates: 40.500, -78.020

Thunderstorm Wind, Beaver

When: July 23, 12:40 PM CST
Where: Beaver County
Coordinates: 40.670, -80.330

Thunderstorm Wind, Cameron

When: July 23, 12:40 PM CST
Where: Cameron County
Coordinates: 41.530, -78.300

Hail, Northumberland

When: July 23, 12:45 PM CST
Where: Northumberland County
Measured: 0.75 in hail
Coordinates: 40.700, -76.830

Hail, Northumberland

When: July 23, 12:47 PM CST
Where: Northumberland County
Measured: 0.75 in hail
Coordinates: 41.020, -76.870

Hail, Columbia

When: July 23, 1:00 PM CST
Where: Columbia County
Measured: 1 in hail
Coordinates: 41.120, -76.530

Thunderstorm Wind, Fayette

When: July 23, 1:00 PM CST
Where: Fayette County
Coordinates: 40.130, -79.850

Thunderstorm Wind, Lycoming

When: July 23, 1:00 PM CST
Where: Lycoming County
Coordinates: 41.250, -76.800

Thunderstorm Wind, Huntingdon

When: July 23, 1:00 PM CST
Where: Huntingdon County
Coordinates: 40.500, -78.020

Thunderstorm Wind, Westmoreland

When: July 23, 1:15 PM CST
Where: Westmoreland County
Coordinates: 40.300, -79.380

Thunderstorm Wind, Centre

When: July 23, 1:15 PM CST
Where: Centre County
Coordinates: 40.780, -77.850

Thunderstorm Wind, Columbia

When: July 23, 1:30 PM CST
Where: Columbia County
Coordinates: 41.200, -76.380

Thunderstorm Wind, Lycoming

When: July 23, 1:31 PM CST
Where: Lycoming County
Coordinates: 41.220, -77.120

Thunderstorm Wind, Lycoming

When: July 23, 1:31 PM CST
Where: Lycoming County
Coordinates: 41.200, -76.800

Thunderstorm Wind, Carbon

When: July 23, 1:45 PM CST
Where: Carbon County
Coordinates: 40.900, -75.630

Thunderstorm Wind, Lycoming

When: July 23, 1:50 PM CST
Where: Lycoming County
Coordinates: 41.200, -76.800

Thunderstorm Wind, Mifflin

When: July 23, 1:50 PM CST
Where: Mifflin County
Coordinates: 40.600, -77.550

Thunderstorm Wind, Huntingdon

When: July 23, 2:00 PM CST
Where: Huntingdon County
Coordinates: 40.630, -77.820

Thunderstorm Wind, Northumberland

When: July 23, 2:00 PM CST
Where: Northumberland County
Coordinates: 40.700, -76.830

Thunderstorm Wind, Berks

When: July 23, 2:20 PM CST
Where: Berks County
Coordinates: 40.480, -75.980

Thunderstorm Wind, Lebanon

When: July 23, 2:30 PM CST
Where: Lebanon County
Injuries: 3 direct, 0 indirect
Coordinates: 40.330, -76.430

Thunderstorm Wind, Berks

When: July 23, 3:20 PM CST
Where: Berks County
Coordinates: 40.480, -75.670

Thunderstorm Wind, Delaware

When: July 23, 3:42 PM CST
Where: Delaware County
Measured: 53 kt (61 mph)
Coordinates: 40.030, -75.370

Thunderstorm Wind, Philadelphia

When: July 23, 3:55 PM CST
Where: Philadelphia County
Measured: 51 kt (59 mph)
Coordinates: 40.100, -75.000

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.
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.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Pennsylvania in 1991 Every state in 1991 This day in weather history The tornado archive for Pennsylvania, 1991 Warnings in Pennsylvania, July 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: 10117323, 10117324, 10117325, 10117326, 10117535, 10117536, 10117537, 10117538, 10117539, 10117540, 10117541, 10117542, 10117543, 10117544, 10117545, 10117546, 10117547, 10117559, 10117548, 10117549, 10117550, 10117551, 10117552, 10117553, 10117554, 10117555, 10117556, 10117557, 10117558, 10117560, 10117561, 10117562, 10117563, 10117564, 10117565, 10117566, 10117567, 10117568, 10117569, 10117570, and more.