Pennsylvania, 2000

Flash Flooding in Pennsylvania, July 31, 2000

July 31, 2000 · NWS PBZ · 5 events in 4 counties and zones

Strong thunderstorms passed over areas of western Pennsylvania that had already received several inches of rain over the past few days. These thunderstorms produced torrential rainfall of up to 3 inches in 90 minutes as they moved across the area, creating flash flooding problems across several counties.

Where it happened

Every event with a place to put it; 5 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
$75,000
Crop damage
None recorded
Events
5

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.

What happened

The episode as NWS PBZ wrote it up.

Strong thunderstorms passed over areas of western Pennsylvania that had already received several inches of rain over the past few days. These thunderstorms produced torrential rainfall of up to 3 inches in 90 minutes as they moved across the area, creating flash flooding problems across several counties.

The radar

The State College radar (KCCX), 96 km away, was scanning. The volume nearest the first event began at 20:07 UTC.

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Event by event

5 flash flood. Local standard time, as filed.

Flash Flood, Indiana

When
July 31, 3:10 PM EST to 5:30 PM EST
Where
Indiana County, Penn Run
Reported by
LAW ENFORCEMENT
Coordinates
40.652, -79.087 (the zone’s center; the record gives no point)

Minor roadway flooding was reported on SR 553 in the Penn Run area.

Flash Flood, Fayette

When
July 31, 3:20 PM EST to 6:00 PM EST
Where
Fayette County, 5 mi SE of Uniontown
Reported by
LAW ENFORCEMENT
Coordinates
39.920, -79.647 (the zone’s center; the record gives no point)

Minor roadway flooding was reported along portions of SR 21 in the German Township area.

Flash Flood, Jefferson

When
July 31, 4:00 PM EST to 9:00 PM EST
Where
Jefferson County, Sykesville
Property damage
$5,000
Reported by
LAW ENFORCEMENT
Coordinates
41.128, -78.999 (the zone’s center; the record gives no point)

Numerous roads were reported flooded in the Sykesville area.

Flash Flood, Jefferson

When
July 31, 4:20 PM EST to 9:00 PM EST
Where
Jefferson County, Reynoldsville
Property damage
$50,000
Reported by
LAW ENFORCEMENT
Coordinates
41.128, -78.999 (the zone’s center; the record gives no point)

Flash flooding was reported in the Reynoldsville area, temporarily closing a number of roads. This included SR 950, which had 2 feet of water covering portions of the roadway. In Reynoldsville, basement flooding was reported in several homes.

Flash Flood, Allegheny

When
July 31, 8:00 PM EST to 9:30 PM EST
Where
Allegheny County, Bridgeville
Property damage
$20,000
Reported by
LAW ENFORCEMENT
Coordinates
40.469, -79.981 (the zone’s center; the record gives no point)

Numerous reports of street flooding were received from the Bridgeville area, as well as from Collier Township, South Fayette Township and Carnegie.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

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

The same day elsewhere

More

Every storm in Pennsylvania in 2000Every state in 2000This day in weather historyWarnings in Pennsylvania, July 2000

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: 5163043, 5163044, 5163045, 5163046, 5163047.