Flash Flood in Pennsylvania, September 6 to 7, 1999

Name: Flash Flood in Pennsylvania, September 6 to 7, 1999
Start: 1999-09-06T23:00
End: 1999-09-07T06:00
Location: Pennsylvania

September 6 to 7, 1999 · NWS CTP · 1 event in 1 county or zone

1 flash flood, as filed by the National Weather Service.

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: $30,000
Crop damage: None recorded
Events: 1

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.

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Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Snyder

When: September 6, 11:00 PM EST to September 7, 6:00 AM EST
Where: Snyder County, East Portion
Property damage: $30,000
Reported by: EMERGENCY MANAGER
Coordinates: 40.770, -77.070 (the zone’s center; the record gives no point)

Heavy rains from Dennis caused flooding of roads, small streams, and basements in the early morning hours across eastern sections of the county. Areas from Middleburg, east to the Susquehanna River, were hard hit. Campers on the banks of Penns Creek had to be moved to safety. Near Kratzerville, about 30 people were moved to higher ground and campground workers attempted to move some trailers. Several trailers were carried away by the floodwaters. In addition, campers in Kreamer were evacuated when a tributary of Middle Creek flooded. Route 15, the major north/south highway to Harrisburg, was closed due to flooding.

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

Every storm in Pennsylvania in 1999 Every state in 1999 This day in weather history Warnings in Pennsylvania, September 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: 5722602.