Pennsylvania, 1999Flash Flood and Hail in Pennsylvania, April 9 to 22, 1999
April 9 to 22, 1999 · NWS CTP · 3 events in 2 counties and zones
2 hail, 1 flash flood, as filed by the National Weather Service.
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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- Deaths
- 0
- Injuries
- 0
- Property damage
- $20,000
- 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.
Hail, Somerset
- When
- April 9, 3:10 PM EST
- Where
- Somerset County, Meyersdale
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.820, -79.030
Winds gusted to 50 mph and dime size hail fell on Mt. Davis 5 miles southwest of Meyersdale. Hail of pea to marble size was also reported in Somerset and Meyersdale along with heavy downpours.
Hail, Somerset
- When
- April 22, 1:10 AM EST
- Where
- Somerset County, Ogletown
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.200, -78.700
Dime size hail fell in Ogletown.
Flash Flood, Cambria
- When
- April 22, 5:00 AM EST to 7:00 AM EST
- Where
- Cambria County, Johnstown
- Property damage
- $20,000
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 40.495, -78.714 (the zone’s center; the record gives no point)
Heavy downpours caused rapid flooding of a small portion of Johnstown. Several basements were flooded and roads were briefly closed.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
- Tornadoes and Hail in Ohio, April 9, 19994 deaths · 65 injured · $89 million · F4 · 12 events
- Tornadoes and Damaging Wind in Indiana, April 9, 19992 injured · $1.9 million · F3 · 3 events
- Tornado in Indiana, April 9, 1999$250,000 · F3 · 1 event
- High Wind in Colorado, April 9 to 10, 1999$14 million · 85 kt wind · 11 events
- Tornado in Indiana, April 9, 1999$100,000 · F2 · 1 event
- Flash Flooding and Hail in Pennsylvania, April 9 to 10, 1999$161,000 · 50 kt wind · 15 events
- Hail and Damaging Winds in Virginia, April 9, 1999$68,000 · 1.75 in hail · 26 events
- Damaging Wind in Indiana, April 9, 19993 injured · $50,000 · 100 kt wind · 1 event
- Tornado and Damaging Winds in Virginia, April 9, 1999$42,000 · F1 · 4 events
- Damaging Winds in Ohio, April 9, 1999$57,000 · 60 kt wind · 8 events
- Hail and Damaging Winds in West Virginia, April 9, 19991 injured · $38,000 · 1 in hail · 5 events
- Damaging Wind in Indiana, April 9, 1999$50,000 · 1 event
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: 5698607, 5698608, 5698609.