Alert archive / New York / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 82, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Sep 7, 1998, 2:38 PM EDT for Nassau County, New York. It was in force for 62 min. 5 reports 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
- Sep 7, 1998, 2:38 PM EDT (18:38 UTC)
- Expired
- Sep 7, 1998, 3:40 PM EDT
- In force
- 62 min
- Issued by
- NWS New York, NY
- Area
- Whole counties
County Nassau County, NY
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 7, 2:50 PM EDT | Thunderstorm Wind 65 | Countywide, NY | |
| Sep 7, 2:50 PM EDT | Hail 0.75 | Long Beach, NY | |
| Sep 7, 2:55 PM EDT | Tornado F2 | Lynbrook, NY | The NWS confirmed that an F2 tornado was responsible for significant damage that occurred in Lynbrook. Most of the village received damage from straight line winds up to 80 mph, that was associated with a severe squall line. Downed trees covered the village |
| Sep 7, 3:10 PM EDT | Hail 1 | Farmingdale, NY | |
| Sep 7, 3:25 PM EDT | Thunderstorm Wind 52 | Massapequa, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 7, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.6 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
- 242 J/kg
- Mixed-layer CIN
- -232 J/kg
- Mixed-layer LCL
- 1668 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
758 WUUS1 KNYC 071840 RRA SVRNYC ANZ355-NYC059-071940- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW YORK NY 238 PM EDT MON SEP 7 1998 THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NASSAU COUNTY INCLUDING ADJACENT COASTAL WATERS IN SOUTHEASTERN NEW YORK * UNTIL 340 PM EDT THIS IS A DANGEROUS STORM STAY INDOORS AWAY FROM WINDOWS. THESE STORMS HAVE A HISTORY OF PRODUCING LARGE HAIL...DAMAGING WINDS. RS
The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 1:20 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 60 min |
| Sep 7, 1:54 PM EDT | Severe Thunderstorm Warning | OKX | Rockland | 46 min |
| Sep 7, 2:03 PM EDT | Severe Thunderstorm Warning | OKX | Richmond | 47 min |
| Sep 7, 2:31 PM EDT | Severe Thunderstorm Warning | OKX | New York | 49 min |
| Sep 7, 2:31 PM EDT | Severe Thunderstorm Warning | OKX | Kings, Queens | 49 min |
| Sep 7, 2:35 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 65 min |
| Sep 7, 2:48 PM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 92 min |
| Sep 7, 2:53 PM EDT | Tornado Warning | OKX | Nassau | 32 min |
| Sep 7, 3:13 PM EDT | Tornado Warning | OKX | Suffolk | 32 min |
Nearby
Severe Thunderstorm Warnings in New York, 1998Every severe thunderstorm warning in 1998
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.