Pennsylvania, 1996

Flooding in Pennsylvania, January 19 to 20, 1996

January 19 to 20, 1996 · NWS PBZ · 3 events in 3 counties and zones

The Youghiogheny River, a tributary of the Monongahela River, was a major contributor in this major flood event. Although the Youghiogheny Reservoir provided some control on the Youghiogheny, the uncontrolled Casselman River which flows into the Youghiogheny immediately downstream of the reservoir, carried runoff from heavy rain and snowmelt from the northern Maryland mountains.

Where it happened

Every event with a place to put it; 1 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
None recorded
Crop damage
None recorded
Events
3

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.

The Youghiogheny River, a tributary of the Monongahela River, was a major contributor in this major flood event. Although the Youghiogheny Reservoir provided some control on the Youghiogheny, the uncontrolled Casselman River which flows into the Youghiogheny immediately downstream of the reservoir, carried runoff from heavy rain and snowmelt from the northern Maryland mountains. This rapid runoff resulted in near record flooding along the Youghiogheny River. Peak streamflow at the mouth of the Youghiogheny, at McKeesport, reached nearly 100,000 cubic feet per second. Damage amounts for the counties affected are found in the flood description of the Monongahela River.The Youghiogheny River crested at 18.6 feet, 6.6 feet above flood stage at Connellsville and at 28.0 feet, 8 feet above flood stage at Sutersville.

The radar

The national radar mosaic for the moment the first event began.

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Event by event

3 flood. Local standard time, as filed.

Flood, Fayette

When
January 19, 8:00 AM EST to January 20, 1:00 PM EST
Where
Fayette forecast zone

Flood, Westmoreland

When
January 19, 8:00 AM EST to January 20, 1:00 PM EST
Where
Westmoreland forecast zone

Flood, Allegheny

When
January 19, 8:00 AM EST to January 20, 1:00 PM EST
Where
Allegheny forecast zone
Coordinates
40.469, -79.981 (the zone’s center; the record gives no point)

What these are

Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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

The same day elsewhere

More

Every storm in Pennsylvania in 1996Every state in 1996This day in weather historyWarnings in Pennsylvania, January 1996

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 2026-09-30. Each event’s entry at NCEI: 5544539, 5544540, 5544541.