Alert archive / New York / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 39, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Jul 11, 2001, 7:08 AM EDT for Rockland County, Westchester County, New York. It was in force for 57 min. 2 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
- Jul 11, 2001, 7:08 AM EDT (11:08 UTC)
- Expired
- Jul 11, 2001, 8:05 AM EDT
- In force
- 57 min
- Issued by
- NWS New York, NY
- Area
- Whole counties
Counties Rockland County, NY, Westchester County, NY
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 11, 7:45 AM EDT | Thunderstorm Wind 50 E | White Plains, NY | |
| Jul 11, 8:00 AM EDT | Thunderstorm Wind 52 E | Orangeburg, 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 |
|---|---|---|---|
| Jul 11, 5:30 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 11.1 hours before the alert went out and 92 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
- 569 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 1879 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
904 WUUS51 KOKX 111108 SVROKX NYC087-119-111205- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW YORK NY 708 AM EDT WED JUL 11 2001 THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ROCKLAND COUNTY IN SOUTHEAST NEW YORK CENTRAL WESTCHESTER COUNTY IN SOUTHEAST NEW YORK * UNTIL 805 AM EDT * AT 706 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER SUFFERN...MOVING EAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... OVER MONSEY...SPRING VALLEY...NANUET AT 715 AM EDT OVER NEW CITY AT 720 AM EDT OVER UPPER NYACK...OSSINING...3 MILES NORTH OF NYACK...3 MILES NORTH OF NORTH TARRYTOWN AT 725 AM EDT 2 MILES NORTH OF HAWTHORNE AT 730 AM EDT $$ THIS CELL HAS A HISTORY OF HIGH WINDS AND SMALL HAIL. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN UPTON NY. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 AM EDT WEDNESDAY MORNING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND SOUTHEAST NEW YORK. LAT...LON 4118 7434 4101 7428 4106 7371 4126 7373
The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 7:38 AM EDT | Severe Thunderstorm Warning | OKX | Nassau | 52 min |
| Jul 11, 7:55 AM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 65 min |
| Jul 11, 8:50 AM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 40 min |
Nearby
Severe Thunderstorm Warnings in New York, 2001Every severe thunderstorm warning in 2001
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.