Thunderstorm Wind, Nassau
- When
- July 18, 1:30 PM EST
- Where
- Nassau County, Sea Cliff
- Measured
- 50 kt (58 mph)
- Coordinates
- 40.830, -73.630
Two "waves" of severe thunderstorms moved southeast across the area: The first line of thunderstorms moved across Nassau and Western Suffolk Counties during the early afternoon. The second line of thunderstorms moved over the area during the evening.
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.
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 episode as NWS OKX wrote it up.
Two "waves" of severe thunderstorms moved southeast across the area: The first line of thunderstorms moved across Nassau and Western Suffolk Counties during the early afternoon. The second line of thunderstorms moved over the area during the evening. For the day, these thunderstorms caused two deaths and 24 injuries.Both lines of severe thunderstorms produced high winds. In addition, the first line produced large hail.Here are selected wind gusts from Western Suffolk County with the passage of the first line:o 60 mph at both Babylon and Farmingdale Airport.o 58 mph at Bohemia.Significant structural damage (several roofs were blown off businesses) resulted in five injuries in Deer Park. A NWS Meteorologist investigated this damage and concluded that it was caused by a microburst. At least 3 roofs were blown off: the K-Lombardi Repair Shop and 2 businesses on Price Parkway.In addition to the 1 inch diameter hail observed at Babylon, 3/4-inch diameter hail occurred at Deer Park.With the passage of the second line, two male workers were hurled off a scaffold at Aviation High School in Sunnyside Queens. Two other men that were on the scaffold were injured, as the scaffold collapsed.High winds caused two tents to collapse: one in Queens causing 16 injuries and one in Brooklyn causing 3 injuries.Lightning struck a two-story facility at 188 Sullivan Place in Brooklyn. It ignited a significant fire, that caused 1 death and 2 injuries.
The Brookhaven radar (KOKX), 65 km away, was scanning. The volume nearest the first event began at 18:29 UTC.
8 thunderstorm wind, 1 hail, 1 lightning. Local standard time, as filed.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Thunderstorm Wind, Queens | 1997-07-18 | 45 | Male | Outside/Open Areas | Direct |
| Thunderstorm Wind, Queens | 1997-07-18 | 41 | Male | Outside/Open Areas | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 1997Every state in 1997This day in weather historyWarnings in New York, July 1997
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: 5610415, 5610416, 5610417, 5610423, 5610418, 5610424, 5610419, 5610420, 5610421, 5610422.