Pennsylvania, 1999

Hail and Damaging Winds in Pennsylvania, August 13 to 24, 1999

August 13 to 24, 1999 · NWS PBZ · 9 events in 5 counties and zones

8 thunderstorm wind, 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

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The toll

Deaths
0
Injuries
0
Property damage
$79,000
Crop damage
None recorded
Events
9

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 national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

8 thunderstorm wind, 1 hail. Local standard time, as filed.

Thunderstorm Wind, Indiana

When
August 13, 3:23 PM EST
Where
Indiana County, Indiana
Measured
74 kt (85 mph)
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.630, -79.150

The Indiana County Airport recorded a wind gust to 85 MPH.

Thunderstorm Wind, Westmoreland

When
August 13, 3:34 PM EST
Where
Westmoreland County, Latrobe
Property damage
$5,000
Reported by
TRAINED SPOTTER
Coordinates
40.300, -79.380

Thunderstorm winds downed several trees across Unity Township.

Thunderstorm Wind, Westmoreland

When
August 13, 3:40 PM EST
Where
Westmoreland County, Scottdale
Property damage
$3,000
Reported by
TRAINED SPOTTER
Coordinates
40.100, -79.600

Thunderstorm winds downed several trees.

Hail, Washington

When
August 13, 5:15 PM EST
Where
Washington County, Claysville
Measured
1.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
40.120, -80.420

Thunderstorm Wind, Fayette

When
August 13, 5:39 PM EST to 5:44 PM EST
Where
Fayette County, Belle Vernon to Fayette City
Property damage
$5,000
Reported by
TRAINED SPOTTER
Coordinates
40.130, -79.850

Thunderstorm winds downed several trees between Belle Vernon and Fayette City along Route 906.

Thunderstorm Wind, Washington

When
August 13, 5:45 PM EST
Where
Washington County, Strabane
Measured
70 kt (81 mph)
Property damage
$50,000
Reported by
TRAINED SPOTTER
Coordinates
40.250, -80.180

Thunderstorm winds damaged two buildings at a construction site. A roof was blown off a hotel under construction and also damaged a WalMart under construction. A few construction trailers were also damaged by the winds.

Thunderstorm Wind, Fayette

When
August 13, 5:55 PM EST
Where
Fayette County, Perryopolis
Measured
60 kt (69 mph)
Property damage
$10,000
Reported by
TRAINED SPOTTER
Coordinates
40.080, -79.770

Thunderstorm winds blew the roof off a garage.

Thunderstorm Wind, Fayette

When
August 13, 6:00 PM EST
Where
Fayette County, Dawson
Property damage
$3,000
Reported by
TRAINED SPOTTER
Coordinates
40.050, -79.670

Thunderstorm winds downed several trees.

Thunderstorm Wind, Allegheny

When
August 24, 3:55 PM EST
Where
Allegheny County, West Mifflin
Property damage
$3,000
Reported by
TRAINED SPOTTER
Coordinates
40.370, -79.920

Thunderstorm winds downed several trees.

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.
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

More

Every storm in Pennsylvania in 1999Every state in 1999This day in weather historyWarnings in Pennsylvania, August 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: 5714772, 5714773, 5714774, 5714754, 5714755, 5714756, 5714757, 5714758, 5714759.