Alert archive / New York / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 71, NWS New York, NY

August 2, 2002Passaic County, New Jersey; Orange County, Rockland County, New York

NWS New York, NY issued this severe thunderstorm warning at Aug 2, 2002, 5:15 PM EDT for Passaic County, New Jersey; Orange County, Rockland County, New York. It was in force for 45 min. 3 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
Aug 2, 2002, 5:15 PM EDT (21:15 UTC)
Expired
Aug 2, 2002, 6:00 PM EDT
In force
45 min
Issued by
NWS New York, NY
Area
Whole counties

Counties Passaic County, NJ, Orange County, NY, Rockland County, NY

The radar

The Brookhaven radar (KOKX), 119 km from the middle of the area, began a volume at 21:18 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

TimeReportWhereRemark
Aug 2, 5:30 PM EDTThunderstorm Wind 50 EWest Milford, NJLocal police and newspapers reported numerous trees and power lines down. As a result, thousands of residents were left without power through the night.
Aug 2, 5:45 PM EDTThunderstorm Wind 50 ENew City, NYLocal police reported several trees knocked over by this storm.
Aug 2, 5:45 PM EDTThunderstorm Wind 50 ENewburgh, NYA spotter reported several trees and power lines downed by this storm in New Windsor. A local newspaper showed pictures of several trees up to 5 feet in diameter that were toppled by this storm. Severe winds stripped the roof off a service building at a car de

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.

IssuedProductOfficeLasted
Aug 2, 4:50 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.3 hours before the alert went out and 119 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.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2002-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 249 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2002-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
249 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1328 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

832 
WUUS51 KOKX 022115
SVROKX
NJC031-NYC071-087-022200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
515 PM EDT FRI AUG 2 2002

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ORANGE COUNTY IN SOUTHEAST NEW YORK
  NORTHERN ROCKLAND COUNTY IN SOUTHEAST NEW YORK
  NORTHWESTERN PASSAIC COUNTY IN NORTHEAST NEW JERSEY

* UNTIL 600 PM EDT

* AT 508 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 7 MILES NORTH OF WEST POINT TO 8
  MILES WEST OF WARWICK...MOVING SOUTHEAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WEST POINT AND HARRIMAN AROUND 520 PM
  GREENWOOD LAKE AND HEWITT AROUND 525 PM
  UTTERTOWN AROUND 530 PM
  WEST MILFORD AROUND 535 PM
  SLOATSBURG AND RINGWOOD AROUND 540 PM
  POMONA AND STONETOWN AROUND 545 PM

SOME OTHER LOCATIONS IN THE WARNING INCLUDE BLOOMINGDALE...CHESTER
AND FLORIDA.

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 55 MPH...LARGE DAMAGING HAIL...DEADLY LIGHTNING...AND VERY HEAVY
RAIN.

$$

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 700 PM FRIDAY
EVENING FOR SOUTHERN CONNECTICUT. A SEVERE THUNDERSTORM WATCH ALSO
REMAINS IN EFFECT UNTIL 900 PM FRIDAY EVENING FOR SOUTHERN
CONNECTICUT AND NORTHEAST NEW JERSEY AND SOUTHEAST NEW YORK.

LAT...LON 4143 7403 4123 7467 4097 7429 4118 7395

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 2, 5:04 PM EDTSevere Thunderstorm WarningOKXPutnam, Westchester41 min
Aug 2, 6:55 PM EDTSevere Thunderstorm WarningOKXBronx, Westchester35 min
Aug 2, 6:57 PM EDTSpecial Marine WarningOKX63 min
Aug 2, 7:05 PM EDTSevere Thunderstorm WarningOKXNassau, Queens, Suffolk55 min
Aug 2, 7:22 PM EDTSpecial Marine WarningOKX53 min

Nearby

Severe Thunderstorm Warnings in New York, 2002Severe Thunderstorm Warnings in New Jersey, 2002Every severe thunderstorm warning in 2002

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.