Thunderstorm Wind, Livingston
- When
- August 9, 5:20 PM EST
- Where
- Livingston County, Nunda
- Property damage
- $5,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.583, -77.950
Flash Flooding and Hail in New York, August 9, 2000
Numerous thunderstorms crossed the western southern tier and genesee valley during the evening hours. The thunderstorm winds downed trees and power lines.
Where it happened
Every event with a place to put it; 3 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $1.1 million
- Crop damage
- None recorded
- Events
- 11
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 BUF wrote it up.
Numerous thunderstorms crossed the western southern tier and genesee valley during the evening hours. The thunderstorm winds downed trees and power lines. Thousands were without electricity. The torrential rains accompanying the thunderstorms, coming just a few days after earlier heavy rains, resulted in flash flooding...especially in Allegany county. Hardest hit was Centerville, Hume, Granger and Caneadea. Several towns in the western southern tier declared States of Emergency. Damage to roads was extensive. In Allegany county, Routes 23, 27, 36 and 3 were closed for days.
The radar
The national radar mosaic for the moment the first event began.
Event by event
7 thunderstorm wind, 3 flash flood, 1 hail. Local standard time, as filed.
Thunderstorm Wind, Livingston
- When
- August 9, 5:35 PM EST
- Where
- Livingston County, Dansville
- Property damage
- $10,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.567, -77.700
Thunderstorm Wind, Cattaraugus
- When
- August 9, 5:40 PM EST
- Where
- Cattaraugus County, Randolph
- Property damage
- $10,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.167, -78.983
Hail, Chautauqua
- When
- August 9, 5:50 PM EST
- Where
- Chautauqua County, Sherman
- Measured
- 1 in hail
- Property damage
- $8,000
- Reported by
- AMATEUR RADIO
- Coordinates
- 42.167, -79.583
Thunderstorm Wind, Cattaraugus
- When
- August 9, 5:55 PM EST
- Where
- Cattaraugus County, Ischua
- Property damage
- $15,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.250, -78.400
Thunderstorm Wind, Allegany
- When
- August 9, 6:15 PM EST
- Where
- Allegany County, Angelica
- Property damage
- $8,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.300, -78.017
Thunderstorm Wind, Erie
- When
- August 9, 6:25 PM EST
- Where
- Erie County, Springville
- Property damage
- $10,000
- Reported by
- AMATEUR RADIO
- Coordinates
- 42.500, -78.650
Thunderstorm Wind, Cattaraugus
- When
- August 9, 6:45 PM EST
- Where
- Cattaraugus County, Ashford
- Property damage
- $15,000
- Reported by
- AMATEUR RADIO
- Coordinates
- 42.317, -78.600
Flash Flood, Cattaraugus
- When
- August 9, 7:00 PM EST to 10:00 PM EST
- Where
- Cattaraugus County, Napoli
- Property damage
- $200,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.249, -78.679 (the zone’s center; the record gives no point)
Flash Flood, Allegany
- When
- August 9, 7:30 PM EST to 10:00 PM EST
- Where
- Allegany County, Hume
- Property damage
- $750,000
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 42.257, -78.028 (the zone’s center; the record gives no point)
Flash Flood, Wyoming
- When
- August 9, 7:45 PM EST to 9:00 PM EST
- Where
- Wyoming County, Arcade
- Property damage
- $75,000
- Reported by
- DEPT OF HIGHWAYS
- Coordinates
- 42.702, -78.224 (the zone’s center; the record gives no point)
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
- 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.
The same day elsewhere
- Tornado and Flash Flooding in Ohio, August 9, 2000
- Hail and Damaging Winds in Kentucky, August 9 to 10, 2000
- Heat in Texas, August 9, 2000
- Heat in Texas, August 9, 2000
- Hail and Damaging Winds in New York, August 9, 2000
- Tornadoes and Flash Flooding in West Virginia, August 9 to 10, 2000
- Hail and Damaging Winds in West Virginia, August 9, 2000
- Tornadoes and Hail in Virginia, August 9, 2000
- Tornado and Flash Flood in Ohio, August 9, 2000
- Damaging Winds and High Wind in Ohio, August 9, 2000
- Tornado in Maine, August 9, 2000
- Damaging Wind in Florida, August 9, 2000
More
Every storm in New York in 2000Every state in 2000This day in weather historyWarnings in New York, August 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: 5170545, 5170546, 5170547, 5170608, 5170548, 5170609, 5170610, 5170611, 5170612, 5170613, 5170614.