Alert archive / New Jersey / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 29, NWS New York, NY

May 18, 2000Bergen County, Passaic County, New Jersey

NWS New York, NY issued this severe thunderstorm warning at May 18, 2000, 6:20 PM EDT for Bergen County, Passaic County, New Jersey. It was in force for 40 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: May 18, 2000, 6:20 PM EDT (22:20 UTC)
Expired: May 18, 2000, 7:00 PM EDT
In force: 40 min
Issued by: NWS New York, NY
Area: Whole counties

Counties Bergen County, NJ, Passaic County, NJ

The radar

The Brookhaven radar (KOKX), 112 km from the middle of the area, began a volume at 22:23 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
May 18, 6:29 PM EDT	Thunderstorm Wind 50 M	Wyckoff, NJ
May 18, 6:45 PM EDT	Thunderstorm Wind 50 E	Wayne, NJ

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
May 18, 6:00 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.3 hours before the alert went out and 112 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 977 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 245 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.

000 
WUUS51 KOKX 182221
SVRNYC
NJC003-031-182300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
620 PM EDT THU MAY 18 2000

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES...

  IN NORTHEASTERN NEW JERSEY...
     NORTHERN PASSAIC...
     BERGEN...

* UNTIL 700 PM EDT...

* AT 620 PM EDT A SEVERE THUNDERSTORM WAS LOCATED 10 MILES WEST OF
  WEST MILFORD...MOVING EAST AT 50 MPH.

* BASED ON THIS MOVEMENT...THE SEVERE THUNDERSTORM SHOULD BE IN
  THE VICINITY OF...
  BLOOMINGDALE AROUND 625 PM EDT...
  WANAQUE AROUND 630 PM EDT...
  FRANKLIN LAKES...OAKLAND...RAMSEY AROUND 635 PM EDT...
  ALLENDALE...HO-HO-KUS...MIDLAND PARK...RIDGEWOOD AROUND 640 PM
  EDT...
  EMERSON AROUND 645 PM EDT...

WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT 
THURSDAY EVENING FOR NORTHEAST NEW JERSEY AND SOUTHEAST NEW YORK.

$$

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN UPTON NY.

LAT...LON 4120 7454 4103 7460 4087 7394 4099 7389

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New York, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at May 18, 2:40 PM EDT, 3 hours 40 minutes earlier.

Area forecast discussion, May 18, 2:40 PM EDT, 3 hours 40 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW YORK NY
240 PM EDT THU MAY 18 2000

ALL FORECASTS DELAYED UNTIL 400 PM.

FRONT IS NOW INTO UPSTATE NY. LINE OF TSTMS HAS DEVELOPED SLIGHTLY
AHEAD OF THE FRONT. AIR FEEDING THE STORMS IS MODERATELY UNSTABLE
WITH DEW POINTS MAINLY IN THE 50S. STILL WAITING TO SEE IF ANYTHING
IS GOING TO POP THROUGH THE CAP IN EASTERN PA WITH THE 80 TO 85
TEMPS AND MID 60 DEW POINTS. LI IN THIS REGION ARE -4 TO -5...BUT
THE CAP CONTINUES TO HOLD. THINKING IS THAT IT WILL CONTINUE TO DO
SO. THUS NOT INCLUDING A REST OF TODAY.

FRONT EXPECTED THROUGH REGION...AROUND MIDNIGHT.  WILL CONTINUE WITH
THE CATEGORICAL POP.

LONGER TERM...NCEP MODELS ARE NOT THAT CONSISTENT WITH THE WAVES
ALONG THE FRONT. NCEP/S DISCUSSION FAVORS THE AVN WITH THE SHORTWAVE
COMING OUT OF THE ROCKIES THAT WOULD BE IN HERE FOR SUNDAY. ETA
KEEPS US IN THE NE FLOW INTO SATURDAY.

MARINE...WILL KE%EP THE GALE FOR A WHILE.

.OKX...GALE WARNING...ATLANTIC CSTL WATERS SOUTH OF LI ANZ355-353-350
       SMALL CRAFT ADVISORY LI SOUND AND NY HARBOR ANZ330-335-338.

TONGUE

In the hours before

Special weather statement, May 18, 4:20 PM EDT, 2 hours before

CTZ005>012-NJZ002>006-011-NYZ067>081-190230-

SEVERE WEATHER OUTLOOK FOR EXTREME SOUTHEAST NEW YORK...
NORTHEAST NEW JERSEY AND SOUTHERN CONNECTICUT
NATIONAL WEATHER SERVICE NEW YORK NY
420 PM EDT THU MAY 18 2000

...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WATCH UNTIL 8 PM FOR ORANGE AND PUTNAM COUNTIES IN NEW YORK
STATE...AND UNTIL 10 PM FOR THE STATE OF CONNECTICUT.

A COLD FRONT MOVING SOUTHEAST ACROSS NEW YORK STATE IS GENERATING A
LONG LINE OF POTENTIALLY SEVERE THUNDERSTORMS. THESE STORMS ARE JUST
AHEAD OF A COLD FRONT THAT WILL USHER IN MUCH COOLER ARE FOR THE
REGION ON FRIDAY.

THE LINE OF THUNDERSTORMS IS EXPECTED TO BE INTO ORANGE AN PUTNAM
COUNTIES AS WELL AS NORTHWESTERN CONNECTICUT BETWEEN 5 AND 6 PM. THE
THUNDERSTORMS WILL MOVE INTO NEW YORK CITY AND THE REST OF
CONNECTICUT BETWEEN 6 AND 8 PM. THE LAST AREA AFFECT BY THESE
STORMS WILL ME LONG ISLAND WHICH CAN ANTICIPATE THE THUNDERSTORMS
BETWEEN 8 AND 10 PM.

THE PRIMARILY THREAT OF SEVERE WEATHER FROM THESE STORMS IS STRONG
GUSTY WINDS. THE GREATEST POTENTIAL FOR SEVERE WEATHER IS TO THE
NORTH AND WEST OF NEW YORK CITY...AS WELL AS OVER INTERIOR
CONNECTICUT.

THE COLD FRONT WILL SLIDE SOUTH OF THE REGION OVERNIGHT LEAVING THE
AREA IN A COOL AND DAMP AIRMASS FOR FRIDAY. TEMPERATURES ON FRIDAY
WILL BE 15 TO AS MUCH AS 25 DEGREES COLDER THAN TODAY. IN ADDITION
TO THE COOL TEMPERATURES...CLOUDS...ALONG WITH PERIODS OF LIGHT RAIN
AND DRIZZLE WILL BE THE RULE.

BY SATURDAY...THE FRONT SHOULD PRESS FAR ENOUGH TO THE SOUTH AND
EAST TO ALLOW FOR CLEARING.

JST

Local storm report, May 18, 6:02 PM EDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
602 PM EDT THU MAY 18 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0530 PM    MIDDLETOWN                NY   WIND DAMAGE
05/18/00   ORANGE                         TREES DOWN WITH MULTIPLE
                                          VEHICLE ACCIDENTS REPORTED
                                          BY A SPOTTER

0530 PM    CORNWALL                  NY   WIND DAMAGE
05/18/00   ORANGE                         WIRES DOWN WITH POWER
                                          OUTAGES REPORTED BY A
                                          SPOTTER

0540 PM    HUGUENOT                  NY   .75 INCH HAIL
05/18/00   ORANGE                         HAIL REPORTED BY A SPOTTER

0550 PM    MAYBROOK                  NY   .88 INCH HAIL
05/18/00   ORANGE                         NICKEL HAIL REPORTED IN
                                          MAYBROOK, CHESTER,
                                          WOODBURY COMMONS REPORTED
                                          BY SPOTTERS

GCo

Local storm report, May 18, 6:11 PM EDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
611 PM EDT THU MAY 18 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0530 PM    MIDDLETOWN                NY   WIND DAMAGE
05/18/00   ORANGE                         TREES DOWN WITH MULTIPLE
                                          VEHICLE ACCIDENTS REPORTED
                                          BY A SPOTTER

0530 PM    CORNWALL                  NY   WIND DAMAGE
05/18/00   ORANGE                         WIRES DOWN WITH POWER
                                          OUTAGES REPORTED BY A
                                          SPOTTER

0540 PM    HUGUENOT                  NY   .75 INCH HAIL
05/18/00   ORANGE                         HAIL REPORTED BY A SPOTTER

0550 PM    MAYBROOK                  NY   .88 INCH HAIL
05/18/00   ORANGE                         NICKEL HAIL REPORTED IN
                                          MAYBROOK, CHESTER,
                                          WOODBURY COMMONS REPORTED
                                          BY SPOTTERS

0550 PM    KENT CLIFFS               NY   .75 INCH HAIL
05/18/00   PUTNAM                         HAIL REPORTED BY A SPOTTER

0600 PM    DANBURY                   CT   70 MPH TSTM GUST
05/18/00   FAIRFIELD                      WIND GUShT TO 70 MPH WITH
                                          LARGE HAIL REPORTED BY A
                                          SPOTTER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 6:55 PM EDT	Severe Thunderstorm Warning	OKX	Essex, Hudson, Union	35 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2000 Every severe thunderstorm warning in 2000

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.