Alert archive / New York / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 49, NWS New York, NY

September 3, 1993Putnam County, Westchester County, New York

NWS New York, NY issued this severe thunderstorm warning at Sep 3, 1993, 10:04 PM EDT for Putnam County, Westchester County, New York. It was in force for 26 min.

The area

The counties it named.

The facts

Issued
Sep 3, 1993, 10:04 PM EDT (02:04 UTC)
Expired
Sep 3, 1993, 10:30 PM EDT
In force
26 min
Issued by
NWS New York, NY
Area
Whole counties

Counties Putnam County, NY, Westchester County, NY

The nearest sounding before it

Albany, NY (KALB), launched 00:00Z, 2.1 hours before the alert went out and 156 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, Albany, NY at 00:00Z on 1993-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1227 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, Albany, NY at 00:00Z on 1993-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 199 square meters per square second.193958Sfc1 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
1227 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1211 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
199 m²/s²
0-3 km storm-relative helicity
266 m²/s²
Significant tornado parameter
1.1
Supercell composite
8.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNYC 040214 COR
SVRNYC
NYC079-119-040230-

BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...COR FOR FIRST PGH
NATIONAL WEATHER SERVICE NEW YORK NY
1004 PM EDT FRI SEP 3 1993

THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTHEAST NEW YORK

   ...EASTERN PUTNAM COUNTY...NORTHEASTERN WESTCHESTER COUNTY

PUTNAM COUNTY SHERIFF REPORTED A SEVERE THUNDERSTORM IN PROGRESS
WITH TREES DOWN IN PHILIPSTOWN.  THIS THUNDERSTORM WAS CURRENTLY
ON THE WESTCHESTER/PUTNAM COUNTY BORDER NEAR MAHOPAC AND WILL MOVE
NEAR BREWSTER AND NORTH SALEM BY 1030 PM.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 58
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.



&

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, Sep 3, 7:30 PM EDT, 2 hours 34 minutes before
CTZ004-005-040000

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BRIDGEPORT CT
730 PM EDT FRI SEP 3 1993

...SHOWERS AND THUNDERSTORMS APPROACHING FAIRFIELD COUNTY IN
   SOUTHWESTER CONNECTICUT BETWEEN DANBURY AND GREENWICH.

AT 730 PM...RADAR SHOWED A LARGE AREA OF SHOWERS AND A FEW STRONG
THUNDERSTORMS ABOUT TO ENTER CONNECTICUT NEAR DANBURY.

THIS AREA OF  MOSTLY SHOWERS WITH A FEW STRONG THUNDERSTORMS MAY
PRODUCES GUSTY WINDS AND LOCALLY HEAVY RAIN.  THIS AREA IS MOVING TO
EAST AT 30 MPH.

IF YOU LIVE IN WEST FAIFIELD COUNTY AND THREATENING WEATHER NEARS
YOUR AREA SEEK SHELTER QUICKLY UNTIL ANY THREATENING WEATHER  PASSES.

WALKER.
Special weather statement, Sep 3, 7:37 PM EDT, 2 hours 27 minutes before
CTZ004-005-040000

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BRIDGEPORT CT
730 PM EDT FRI SEP 3 1993

...SHOWERS AND THUNDERSTORMS APPROACHING FAIRFIELD COUNTY IN
   SOUTHWESTER CONNECTICUT BETWEEN DANBURY AND GREENWICH.

AT 730 PM...RADAR SHOWED A LARGE AREA OF SHOWERS AND A FEW STRONG
THUNDERSTORMS ABOUT TO ENTER CONNECTICUT NEAR DANBURY.

THIS AREA OF  MOSTLY SHOWERS WITH A FEW STRONG THUNDERSTORMS MAY
PRODUCES GUSTY WINDS AND LOCALLY HEAVY RAIN.  THIS AREA IS MOVING TO
EAST AT 30 MPH.

IF YOU LIVE IN WEST FAIFIELD COUNTY AND THREATENING WEATHER NEARS
YOUR AREA SEEK SHELTER QUICKLY UNTIL ANY THREATENING WEATHER  PASSES.

WALKER.
Special weather statement, Sep 3, 7:37 PM EDT, 2 hours 27 minutes before
NYZ014-015-016-017-023-024-NJZ001-005-007-015-030245-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NEW YORK NY
737 PM EDT FRI SEP 3 1993

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR NORTHERN NEW JERSEY...
SOUTHEASTERN NEW YORK STATE INCLUDING NEW YORK CITY AND NASSAU COUNTY
UNTIL 10 PM...

RADAR INDICATED AN AREA OF SHOWERS AND THUNDERSTORMS ACROSS CENTRAL
NEW JERSEY AND SOUTHEASTERN NEW YORK STATE EXTENDING FROM FLEMINGTON
TO SUFFERN NORTH THROUGH NEWBURGH. THIS AREA HAS WEAKENED OVER THE LAST
HOUR AND IF IT HOLDS TOGETHER ISOLATED SHOWERS WILL MOVE THROUGH THE
NEW YORK CITY AREA WITHIN THE HOUR.

AN AREA OF STRONG THUNDERSTORMS HAS DEVELOPED ACROSS EASTERN PENNSYLVANIA
WITHIN THE LAST HOUR. THIS AREA EXTENDS FROM SULLIVAN COUNTY NEW YORK
SOUTH ACROSS ALLENTOWN TO LANCASTER PENNSYLVANIA. A FEW THUNDERSTORMS
IN THIS AREA HAVE PRODUCED DAMAGING WINDS.  THESE THUNDERSTORMS WILL MOVE
INTO WESTERN NEW JERSEY AND ORANGE COUNTY BY 815 PM.
.
IF THESE THUNDERSTORMS CONTINUE TO INTENSIFY SEVERE THUNDERSTORM
WARNINGS MAY BE NEED WITHIN THE HOUR.

BROWN
Special weather statement, Sep 3, 7:43 PM EDT, 2 hours 21 minutes before
NYZ014-015-016-017-023-024-NJZ001-005-007-015-030245-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NEW YORK NY
737 PM EDT FRI SEP 3 1993

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR NORTHERN NEW JERSEY...
SOUTHEASTERN NEW YORK STATE INCLUDING NEW YORK CITY AND NASSAU COUNTY
UNTIL 10 PM...

RADAR INDICATED AN AREA OF SHOWERS AND THUNDERSTORMS ACROSS CENTRAL
NEW JERSEY AND SOUTHEASTERN NEW YORK STATE EXTENDING FROM FLEMINGTON
TO SUFFERN NORTH THROUGH NEWBURGH. THIS AREA HAS WEAKENED OVER THE LAST
HOUR AND IF IT HOLDS TOGETHER ISOLATED SHOWERS WILL MOVE THROUGH THE
NEW YORK CITY AREA WITHIN THE HOUR.

AN AREA OF STRONG THUNDERSTORMS HAS DEVELOPED ACROSS EASTERN PENNSYLVANIA
WITHIN THE LAST HOUR. THIS AREA EXTENDS FROM SULLIVAN COUNTY NEW YORK
SOUTH ACROSS ALLENTOWN TO LANCASTER PENNSYLVANIA. A FEW THUNDERSTORMS
IN THIS AREA HAVE PRODUCED DAMAGING WINDS.  THESE THUNDERSTORMS WILL MOVE
INTO WESTERN NEW JERSEY bAND ORANGE COUNTY BY 815 PM.
.
IF THESE THUNDERSTORMS CONTINUE TO INTENSIFY SEVERE THUNDERSTORM
WARNINGS MAY BE NEED WITHIN THE HOUR.

BROWN
Special weather statement, Sep 3, 9:40 PM EDT, 24 minutes before
NYZ014-015-016-017-023-024-NJZ001-005-007-015-030345-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NEW YORK NY
940 PM EDT FRI SEP 3 1993

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR NORTHERN NEW JERSEY...
SOUTHEASTERN NEW YORK STATE INCLUDING NEW YORK CITY AND NASSAU COUNTY
UNTIL 10 PM...

RADAR INDICATED A LARGE AREA OF RAIN AND THUNDERSTORMS COVERING
SOUTHEASTERN NEW YORK STATE...MOST OF THE NORTHERN HALF OF NEW JERSEY
AND EASTERN PENNSYLVANIA.  THIS AREA EXTENDED FROM PITTSFIELD
MASSACHUSETTS TO NEWBURGH NEW YORK TO LANCASTER PENNSYLVANIA.

THE STRONGEST ACTIVITY WAS FOUND ACROSS PUTNAM...ROCKLAND AND
WESTCHESTER COUNTIES AND WESTERN ORANGE COUNTY.

RAIN AND ISOLATED THUNDERSTORMS WILL OVERSPREAD NEW YORK CITY
WITHIN THE NEXT HALF HOUR.
.
ISOLATED HEAVY DOWNPOURS CAN BE EXPECTED WITH ANY THUNDERSTORM
FOR AT LEAST THE NEXT THREE HOURS.  GUSTY WINDS ARE ALSO POSSIBLE.

HEAVY DOWNPOURS WILL FLOOD LOW-LYING AREAS AND STREETS QUICKLY.
HEAVY RAINS WILL ALSO REDUCE VISIBILITY MAKING FOR VERY HAZARDOUS
DRIVING CONDITIONS.

BROWN
Special weather statement, Sep 3, 9:48 PM EDT, 16 minutes before
NYZ014-015-016-017-023-024-NJZ001-005-007-015-030345-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NEW YORK NY
940 PM EDT FRI SEP 3 1993

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR NORTHERN NEW JERSEY...
SOUTHEASTERN NEW YORK STATE INCLUDING NEW YORK CITY AND NASSAU COUNTY
UNTIL 10 PM...

RADAR INDICATED A LARGE AREA OF RAIN AND THUNDERSTORMS COVERING
SOUTHEASTERN NEW YORK STATE...MOST OF THE NORTHERN HALF OF NEW JERSEY
AND EASTERN PENNSYLVANIA.  THIS AREA EXTENDED FROM PITTSFIELD
MASSACHUSETTS TO NEWBURGH NEW YORK TO LANCASTER PENNSYLVANIA.

THE STRONGEST ACTIVITY WAS FOUND ACROSS PUTNAM...ROCKLAND AND
WESTCHESTER COUNTIES AND WESTERN ORANGE COUNTY.

RAIN AND ISOLATED THUNDERSTORMS WILL OVERSPREAD NEW YORK CITY
WITHIN THE NEXT HALF HOUR.
.
ISOLATED HEAVY DOWNPOURS CAN BE EXPECTED WITH ANY THUNDERSTORM
FOR AT LEAST THE NEXT THREE HOURS.  GUSTY WINDS ARE ALSO POSSIBLE.

HEAVY DOWNPOURS WILL FLOOD LOW-LYING AREAS AND STREETS QUICKLY.
HEAVY RAINS WILL ALSO REDUCE VISIBILITY MAKING FOR VERY HAZARDOUS
DRIVING CONDITIONS.

BROWN

Nearby

Severe Thunderstorm Warnings in New York, 1993Every severe thunderstorm warning in 1993

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.