Pennsylvania, 1991

Damaging Winds in Pennsylvania, May 1, 1991

May 1, 1991 · NWS YNG · 24 events in 19 counties and zones

24 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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
24

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

24 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Lawrence

When
May 1, 12:47 PM CST
Where
Lawrence County
Coordinates
40.980, -80.320

Thunderstorm Wind, Washington

When
May 1, 12:50 PM CST
Where
Washington County
Coordinates
40.250, -80.150

Thunderstorm Wind, Beaver

When
May 1, 12:50 PM CST
Where
Beaver County
Coordinates
40.580, -80.220

Thunderstorm Wind, Mercer

When
May 1, 12:52 PM CST
Where
Mercer County
Coordinates
41.230, -80.150

Thunderstorm Wind, Allegheny

When
May 1, 1:00 PM CST
Where
Allegheny County
Coordinates
40.280, -79.980

Thunderstorm Wind, Clarion

When
May 1, 1:00 PM CST
Where
Clarion County
Coordinates
41.280, -79.320

Thunderstorm Wind, Allegheny

When
May 1, 1:00 PM CST
Where
Allegheny County
Coordinates
40.570, -80.230

Thunderstorm Wind, Butler

When
May 1, 1:15 PM CST
Where
Butler County
Coordinates
40.900, -79.820

Thunderstorm Wind, Butler

When
May 1, 1:20 PM CST
Where
Butler County
Coordinates
41.030, -80.130

Thunderstorm Wind, Venango

When
May 1, 1:30 PM CST
Where
Venango County
Coordinates
41.400, -79.700

Thunderstorm Wind, McKean

When
May 1, 1:31 PM CST
Where
McKean County
Coordinates
41.970, -78.650

Thunderstorm Wind, Jefferson

When
May 1, 2:00 PM CST
Where
Jefferson County
Coordinates
41.030, -78.900

Thunderstorm Wind, Clarion

When
May 1, 2:00 PM CST
Where
Clarion County
Coordinates
41.130, -79.280

Thunderstorm Wind, Clearfield

When
May 1, 2:40 PM CST
Where
Clearfield County
Coordinates
41.030, -78.450

Thunderstorm Wind, Cambria

When
May 1, 3:00 PM CST
Where
Cambria County
Coordinates
40.330, -78.920

Thunderstorm Wind, Clinton

When
May 1, 3:05 PM CST
Where
Clinton County
Coordinates
41.350, -77.720

Thunderstorm Wind, Centre

When
May 1, 3:10 PM CST
Where
Centre County
Coordinates
40.980, -77.930

Thunderstorm Wind, Blair

When
May 1, 3:20 PM CST
Where
Blair County
Coordinates
40.300, -78.450

Thunderstorm Wind, Centre

When
May 1, 3:22 PM CST
Where
Centre County
Coordinates
41.020, -77.670

Thunderstorm Wind, Bedford

When
May 1, 3:30 PM CST
Where
Bedford County
Coordinates
40.020, -78.500

Thunderstorm Wind, Clinton

When
May 1, 3:50 PM CST
Where
Clinton County
Coordinates
41.020, -77.530

Thunderstorm Wind, Somerset

When
May 1, 4:30 PM CST
Where
Somerset County
Coordinates
39.820, -78.820

Thunderstorm Wind, Susquehanna

When
May 1, 5:15 PM CST
Where
Susquehanna County
Coordinates
41.850, -76.070

Thunderstorm Wind, Wayne

When
May 1, 6:00 PM CST
Where
Wayne County
Coordinates
41.670, -75.070

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

More

Every storm in Pennsylvania in 1991Every state in 1991This day in weather historyWarnings in Pennsylvania, May 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: 10115285, 10115286, 10115287, 10115288, 10115289, 10115290, 10115291, 10115292, 10115293, 10115294, 10115295, 10115296, 10115297, 10115298, 10115299, 10115300, 10115301, 10115302, 10115303, 10115304, 10115305, 10115306, 10115307, 10115308.