Alert archive / New York / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 49, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Jul 7, 1997, 6:07 PM EDT for Nassau County, New York. It was in force for 53 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 7, 1997, 6:07 PM EDT (22:07 UTC)
- Expired
- Jul 7, 1997, 7:00 PM EDT
- In force
- 53 min
- Issued by
- NWS New York, NY
- Area
- Whole counties
County Nassau County, NY
The radar
The Brookhaven radar (KOKX), 62 km from the middle of the area, began a volume at 22:08 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 7, 6:45 PM EDT | Thunderstorm Wind 50 | Woodmere, NY |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.1 hours before the alert went out and 62 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 281 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 959 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
859 WUUS1 KNYC 072209 RRA SVRNYC NYC059-072300- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW YORK NY 607 PM EDT MON JUL 7 1997 THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM EDT FOR THE PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST NEW YORK ...NASSAU COUNTY AND THE ADJACENT COASTAL WATERS NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES A POSSIBLE SEVERE THUNDERSTORM IN CENTRAL QUEENS COUNTY AT 600 PM. THIS THUNDERSTORM IS MOVING TOWARDS THE SOUTHERN SECTIONS OF NASSAU COUNTY AT 15 MPH. THIS DANGEROUS STORM HAS A HISTORY OF PRODUCING WINDS GUSTS TO 65 MPH...HAIL...FREQUENT LIGHTNING...AND TORRENTIAL RAIN. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 58 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DONT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. MCKILLOP
The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 12:00 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 60 min |
| Jul 7, 1:05 PM EDT | Severe Thunderstorm Warning | OKX | Putnam | 55 min |
| Jul 7, 2:28 PM EDT | Severe Thunderstorm Warning | OKX | Rockland | 62 min |
| Jul 7, 2:42 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 48 min |
| Jul 7, 5:41 PM EDT | Severe Thunderstorm Warning | OKX | Queens | 49 min |
Nearby
Severe Thunderstorm Warnings in New York, 1997Every severe thunderstorm warning in 1997
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.