New York, 1999

Flash Flood and Flood in New York, September 16 to 17, 1999

September 16 to 17, 1999 · NWS BGM · 2 events in 2 counties and zones

Moisture associated with the remnants of Hurricane Floyd moved north along a frontal boundary that was stalled from eastern Pennsylvania to New England. Rain developed over central New York during the predawn hours and became heavy at times throughout the afternoon and night as "Floyd" continued up the east coast.

Where it happened

Every event with a place to put it; 2 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
2

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 BGM wrote it up.

Moisture associated with the remnants of Hurricane Floyd moved north along a frontal boundary that was stalled from eastern Pennsylvania to New England. Rain developed over central New York during the predawn hours and became heavy at times throughout the afternoon and night as "Floyd" continued up the east coast. Before the rain let up during the morning of the 17th, four to seven inches of rain was common in the Western Catskills with other rain amounts ranging from three to five inches in the Mohawk Valley and Susquehanna region of central New York, and just over two inches in the central Southern Tier and Finger Lakes regions.Fortunately, due to the drought conditions that plagued the area over the summer months, these heavy amounts of rain were able to be efficiently absorbed by the parched topsoil. As a result, flooding was minor. No main stem river flooding occurred, but there were numerous accounts where small streams left there banks in Sullivan county producing several road washouts. A few roads were closed in Chenango county due to poor drainage flooding and ponding of water in low lying areas.

The radar

The Binghamton radar (KBGM), 45 km away, was scanning. The volume nearest the first event began at 22:57 UTC.

Open the radar archive at this moment

Event by event

1 flood, 1 flash flood. Local standard time, as filed.

Flood, Chenango

When
September 16, 6:00 PM EST to September 17, 3:00 AM EST
Where
Chenango County, Countywide
Reported by
EMERGENCY MANAGER
Coordinates
42.494, -75.612 (the zone’s center; the record gives no point)

Flash Flood, Sullivan

When
September 16, 6:00 PM EST to September 17, 3:00 AM EST
Where
Sullivan County, Countywide
Reported by
EMERGENCY MANAGER
Coordinates
41.716, -74.768 (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.
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

More

Every storm in New York in 1999Every state in 1999This day in weather historyWarnings in New York, 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: 5717752, 5717753.