Flash Flood in Pennsylvania, September 9, 1999

Deaths

0

Injuries

0

Property damage

$5,000

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 national radar mosaic for the moment the first event began.

Open the radar archive at this moment

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.

• Wildfire in California, September 9 to 11, 1999$290,000 · 1 event
• Damaging Winds in Pennsylvania, September 9 to 29, 1999$41,000 · 54 kt wind · 13 events
• Flash Flooding and Hail in Virginia, September 9, 1999$35,000 · 0.75 in hail · 13 events
• Hail and Damaging Winds in North Carolina, September 9, 1999$30,000 · 60 kt wind · 6 events
• Lightning Strike in California, September 9, 1999$15,000 · 1 event
• Flash Flooding and Damaging Winds in Maryland, September 9, 1999$8,000 · 7 events
• Flash Flooding and Damaging Wind in Virginia, September 9, 19994 events
• Hail and Damaging Wind in Pennsylvania, September 9, 199950 kt wind · 4 events
• Heavy Rain in Pennsylvania, September 9, 19994 events
• Funnel Clouds and Waterspout in Wisconsin, September 9, 19993 events
• Flash Flooding in Pennsylvania, September 9, 19993 events
• Dust Storm in Nevada, September 9, 19993 events

Every storm in Pennsylvania in 1999Every state in 1999This day in weather historyWarnings in Pennsylvania, September 1999

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: 5722714.