Alert archive / New York / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 29, NWS New York, NY

May 31, 1998Westchester County, New York

NWS New York, NY issued this severe thunderstorm warning at May 31, 1998, 10:47 PM EDT for Westchester County, New York. It was in force for 48 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 31, 1998, 10:47 PM EDT (02:47 UTC)
Expired
May 31, 1998, 11:35 PM EDT
In force
48 min
Issued by
NWS New York, NY
Area
Whole counties

County Westchester County, NY

What was reported inside it

TimeReportWhereRemark
May 31, 11:03 PM EDTThunderstorm Wind 50Peekskill, NY
May 31, 11:18 PM EDTThunderstorm Wind 50Pound Ridge, 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.

IssuedProductOfficeLasted
May 31, 10:00 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.8 hours before the alert went out and 81 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 00:00Z on 1998-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 151 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 1998-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 233 square meters per square second.19395878Sfc1 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
151 J/kg
Mixed-layer CIN
-348 J/kg
Mixed-layer LCL
1224 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
233 m²/s²
0-3 km storm-relative helicity
319 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.

625 
WUUS1 KNYC 010249 RRA
SVRNYC
NJC003-031-NYC087-119-010335-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
1047 PM EDT SUN MAY 31 1998

THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ROCKLAND COUNTY IN SOUTHEASTERN NEW YORK
  NORTHERN WESTCHESTER COUNTY IN SOUTHEASTERN NEW YORK
  BERGEN COUNTY IN NORTHEASTERN NEW JERSEY
  PASSAIC COUNTY IN NORTHEASTERN NEW JERSEY

* UNTIL 1135 PM EDT

* THE FOLLOWING LOCATIONS ARE IN THE PATH OF THIS STORM
  SUFFERN               BY 1037 PM EDT
  MAHWAH                BY 1038 PM EDT
  WANAQUE               BY 1038 PM EDT
  BLOOMINGDALE          BY 1040 PM EDT
  OAKLAND               BY 1040 PM EDT
  SPRING VALLEY         BY 1040 PM EDT
  POMPTON LAKES         BY 1042 PM EDT
  RAMSEY                BY 1042 PM EDT
  UPPER SADDLE RIVER    BY 1043 PM EDT
  WYCKOFF               BY 1044 PM EDT
  NANUET                BY 1044 PM EDT
  SADDLE RIVER          BY 1045 PM EDT
  PEARL RIVER           BY 1045 PM EDT
  WOODCLIFF LAKE        BY 1047 PM EDT
  WAYNE                 BY 1048 PM EDT
  ORANGEBURG            BY 1048 PM EDT
  HAWTHORNE             BY 1049 PM EDT
  NORTH HALEDON         BY 1049 PM EDT
  HILLSDALE             BY 1050 PM EDT
  PATERSON              BY 1050 PM EDT
  TOTOWA                BY 1052 PM EDT
  DOBBS FERRY           BY 1054 PM EDT
  BERGENFIELD           BY 1055 PM EDT
  HACKENSACK            BY 1055 PM EDT
  CLIFTON               BY 1057 PM EDT
  TETERBORO             BY 1059 PM EDT
  CARLSTADT             BY 1100 PM EDT
  PARAMUS               BY 1101 PM EDT
  ENGLEWOOD             BY 1101 PM EDT
  LYNDHURST             BY 1102 PM EDT
  MOUNT VERNON          BY 1103 PM EDT
  RIDGEFIELD            BY 1104 PM EDT
  NEW ROCHELLE          BY 1107 PM EDT
  PELHAM MANOR          BY 1107 PM EDT

* AT 1044 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR IN UPTON
  NY INDICATED A SEVERE THUNDERSTORM IN THE VICINITY OF WEST
  MILFORD MOVING SOUTHEAST AT 45 MPH.

GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS A TORNADO
WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

KLEIN

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.

In the hours before

Special weather statement, May 31, 6:13 PM EDT, 4 hours 34 minutes before
NYZ067>081-NJZ002>006-011-CTZ005>012-010400-

SPECIAL WEATHER STATEMENT - EVENING SEVERE WEATHER POTENTIAL
NATIONAL WEATHER SERVICE NEW YORK NY
613 PM EDT SUN MAY 31 1998

...ROUGH AND TUMBLE WEATHER IN THE FORM OF SEVERE THUNDERSTORMS IS
HEADED FOR THE TRI-STATE REGION...

...A TORNADO WATCH HAS BEEN ISSUED FOR THE ENTIRE TRI-STATE REGION
AND IS IN EFFECT UNTIL 1000 PM...

A VERY STRONG STORM SYSTEM MOVING INTO SOUTHEASTERN CANADA WILL
BRING SOME VERY INTENSE WEATHER TO THE TRI-STATE REGION LATER THIS
EVENING.  SEVERE THUNDERSTORMS HAVE BEEN MOVING ACROSS PORTIONS OF
UPSTATE NEW YORK THROUGHOUT THE AFTERNOON HOURS...AND SEVERE
THUNDERSTORMS ARE CURRENTLY DEVELOPING ACROSS CENTRAL AND EASTERN
PENNSYLVANIA.

THE ATMOSPHERE HAS BECOME VERY UNSTABLE ACROSS OUR REGION AS WELL...
AND SEVERE WEATHER IS POSSIBLE LATER THIS EVENING.  ANY SEVERE
THUNDERSTORMS THAT DO DEVELOP MAY PRODUCE WIND GUSTS WELL OVER 60
MPH WHICH MAY DOWN TREES AND POWER LINES...LARGE HAIL.  CONDITIONS
ARE FAVORABLE FOR ISOLATED TORNADOES AS WELL.

CURRENT PROJECTIONS INDICATE THAT THUNDERSTORMS WILL BEGIN TO ARRIVE
IN THE LOWER HUDSON VALLEY AROUND 730 PM...NORTHEAST NEW JERSEY BY
ABOUT 830 PM...AND SOUTHERN CONNECTICUT...NEW YORK CITY AND LONG
ISLAND WELL AFTER SUNSET.

ANYONE WITH OUTDOOR PLANS FOR THIS EVENING SHOULD KEEP A WATCHFUL
EYE TO THE SKY.  IF THREATENING WEATHER APPROACHES...BE PREPARED TO
SEEK SAFE SHELTER.  STAY TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA
OUTLETS FOR THE LATEST SHORT TERM FORECASTS AND POSSIBLE WARNINGS.

REYNOLDS / NWSFO BROOKHAVEN NY
Special weather statement, May 31, 10:38 PM EDT, 9 minutes before
NYZ067>081-NJZ002>006-011-CTZ005>012-010900-

SPECIAL WEATHER STATEMENT
AND WEATHER MAP DISCUSSION FOR EXTREME SOUTHEASTERN NEW YORK...
NORTHEASTERN NEW JERSEY AND SOUTHERN CONNECTICUT
NATIONAL WEATHER SERVICE NEW YORK NY
1038 PM EDT SUN MAY 31 1998

...TORNADO WATCH EXTENDED UNTIL 400 AM FOR SOUTHEASTERN NEW YORK AND
NORTHEASTERN NEW JERSEY...

...TORNADO WATCH IN EFFECT UNTIL 200 AM FOR SOUTHERN CONNECTICUT...

...FLOOD WATCH ISSUED FOR THE LOWER HUDSON VALLEY OF NEW YORK AND
FAIRFIELD COUNTY CONNECTICUT FOR THE OVERNIGHT...

A WILD WEATHER NIGHT CONTINUES ACROSS THE TRI-STATE REGION...WITH
SEVERE THUNDERSTORMS AND HEAVY RAINFALL ACROSS THE LOWER HUDSON
VALLEY OF NEW YORK AND EXTREME SOUTHWESTERN CONNECTICUT.  SOME OF
THESE STORMS HAVE PRODUCED FUNNEL CLOUDS...TORRENTIAL RAINS AND HAIL.

SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE OVERNIGHT HOURS
...AND BEGIN TO TAPER OFF TOWARD MORNING AS A COLD FRONT MOVES
THROtUGH THE REGION.

QUIETER AND COOLER WEATHER IS ON TAP FOR MONDAY.

REYNOLDS

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 8:17 PM EDTTornado WarningOKXOrange38 min
May 31, 8:33 PM EDTSevere Thunderstorm WarningOKXPutnam57 min
May 31, 8:47 PM EDTTornado WarningOKXOrange58 min
May 31, 9:05 PM EDTTornado WarningOKXWestchester65 min
May 31, 9:56 PM EDTTornado WarningOKXOrange, Putnam59 min
May 31, 9:56 PM EDTTornado WarningOKXRockland59 min
May 31, 10:10 PM EDTSevere Thunderstorm WarningOKXWestchester60 min
May 31, 10:37 PM EDTFlash Flood WarningOKXOrange118 min
May 31, 10:47 PM EDTSevere Thunderstorm WarningOKXRockland48 min
Jun 1, 2:03 AM EDTSevere Thunderstorm WarningOKXKings, Queens47 min
Jun 1, 2:33 AM EDTSevere Thunderstorm WarningOKXNassau, Suffolk47 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.