Alert archive / Connecticut / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 72, NWS New York, NY

July 18, 1997Lower Connecticut River Valley Planning Region, Connecticut

NWS New York, NY issued this severe thunderstorm warning at Jul 18, 1997, 4:52 PM EDT for Lower Connecticut River Valley Planning Region, Connecticut. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 18, 1997, 4:52 PM EDT (20:52 UTC)
Expired
Jul 18, 1997, 5:45 PM EDT
In force
53 min
Issued by
NWS New York, NY
Area
Whole counties

County Lower Connecticut River Valley Planning Region, CT

The radar

The Brookhaven radar (KOKX), 72 km from the middle of the area, began a volume at 20:51 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.9 hours before the alert went out and 72 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 1997-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 537 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 12:00Z on 1997-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
537 J/kg
Mixed-layer CIN
-119 J/kg
Mixed-layer LCL
1397 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
44 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 
TTAA00 KNYC 182056 RRA
SVRNYC
CTC007-182145-
 
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
452 PM EDT FRI JUL 18 1997
 
THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM EDT
FOR THE PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL CONNECTICUT
 
   ...SOUTHERN MIDDLESEX COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
 
DOPPLER RADAR AT 452 PM SHOWS A SEVERE THUNDERSTORM IN SOUTHERN NEW
HAVEN COUNTY MOVING EAST SOUTHEAST AT 15 MPH.
 
THIS STORM HAS A HISTORY OF WIND GUSTS TO 60 MPH ALONG WITH DIME SIZE
HAIL...FREQUNET CLOUD TO GROUND LIGHTNING AND HEAVY DOWNPOURS. LOCALIZED
STREET AND POOR DRAINAGE FLOODING CAN OCCUR WITH THIS SLOW MOVING
STORM.
 
THIS STORM WILL ENTER THE SOUTHWESTERN PART OF THE COUNTY BY 5 PM AND
AFFECT THE CLINTON-WESTBROOK VICINITY AROUND 515 PM.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
 
 
&

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

Local storm report, Jul 18, 3:43 PM EDT, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
347 PM EDT FRI JUL 18 1997

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

0230 PM    SEA CLIFF                 NY   WIND DAMAGE
07/18/97   NASSAU                         EXTENSIVE DAMAGE REPORTED
                                          BY NASSAU COUNTY EOC IN
                                          SEA CLIFF...SANDS POINT..
                                          AND ELMONT.

0235 PM    BABYLON                   NY   60 MPH TSTM GUST
07/18/97   SUFFOLK                        ESTIMATED IN NORTH BABYLON

0245 PM    FARMINGDALE RPBLC ARPT    NY   52 MPH TSTM GUST
07/18/97   SUFFOLK                        SQUALL ARE REPUBLIC
                                          AIRPORT

0250 PM    DEER PARK                 NY   WIND DAMAGE
07/18/97   SUFFOLK                        *** 12 INJ ***
                                          ROOFS BLOWN OFF TWO
                                          BUILDINGS...INITIAL
                                          ESTIMATE OF INJURIES TO
                                          PEOPLE INSIDE BUILDINGS.

0250 PM    BABYLON                   NY   1 INCH HAIL
07/18/97   SUFFOLK

0252 PM    DEER PARK                 NY   .75 INCH HAIL
07/18/97   SUFFOLK

0308 PM    BOHEMIA                   NY   58 MPH TSTM GUST
07/18/97   SUFFOLK
Local storm report, Jul 18, 3:47 PM EDT, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
347 PM EDT FRI JUL 18 1997

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

0230 PM    SEA CLIFF                 NY   WIND DAMAGE
07/18/97   NASSAU                         EXTENSIVE DAMAGE REPORTED
                                          BY NASSAU COUNTY EOC IN
                                          SEA CLIFF...SANDS POINT..
                                          AND ELMONT.

0235 PM    BABYLON                   NY   60 MPH TSTM GUST
07/18/97   SUFFOLK                        ESTIMATED IN NORTH BABYLON

0245 PM    FARMINGDALE RPBLC ARPT    NY   52 MPH TSTM GUST
07/18/97   SUFFOLK                        SQUALL ARE REPUBLIC
                                          AIRPORT

0250 PM    DEER PARK                 NY   WIND DAMAGE
07/18/97   SUFFOLK                        *** 12 INJ ***
                                          ROOFS BLOWN OFF TWO
                                          BUILDINGS...INITIAL
                                          ESTIMATE OF INJURIES TO
                                          PEOPLE INSIDE BUILDINGS.

0250 PM    BABYLON                   NY   1 INCH HAIL
07/18/97   SUFFOLK

0252 PM    DEER PARK                 NY   .75 INCH HAIL
07/18/97   SUFFOLK

0308 PM    BOHEMIA                   NY   58 MPH TSTM GUST
07/18/97   SUFFOLK
Local storm report, Jul 18, 4:24 PM EDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
428 PM EDT FRI JUL 18 1997

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

0230 PM    SEA CLIFF                 NY   WIND DAMAGE
07/18/97   NASSAU                         EXTENSIVE DAMAGE REPORTED
                                          BY NASSAU COUNTY EOC IN
                                          SEA CLIFF...SANDS POINT..
                                          AND ELMONT.

0230 PM    PARAMUS                   NJ
07/18/97   BERGEN                         *** 1 DEAD ***
                                          TREE FELL KILLING PARKING
                                          LOT ATTENDANT AT PARAMUS
                                          COUNTRY CLUB. INITIAL
                                          REPORT.

0235 PM    BABYLON                   NY   60 MPH TSTM GUST
07/18/97   SUFFOLK                        ESTIMATED IN NORTH BABYLON

0245 PM    FARMINGDALE RPBLC ARPT    NY   60 MPH TSTM GUST
07/18/97   SUFFOLK                        SQUALL AT REPUBLIC AIRPORT

0250 PM    BABYLON                   NY   1 INCH HAIL
07/18/97   SUFFOLK

0250 PM    DEER PARK                 NY   WIND DAMAGE
07/18/97   SUFFOLK                        *** 12 INJ ***
                                          ROOFS BLOWN OFF TWO
                                          BUILDINGS...INITIAL
                                          ESTIMATE OF INJURIES TO
                                          PEOPLE INSIDE BUILDINGS.

0252 PM    DEER PARK H                NY   .75 INCH HAIL
07/18/97   SUFFOLK

0308 PM    BOHEMIA                   NY   58 MPH TSTM GUST
07/18/97   SUFFOLK
Local storm report, Jul 18, 4:28 PM EDT, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
428 PM EDT FRI JUL 18 1997

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

0230 PM    SEA CLIFF                 NY   WIND DAMAGE
07/18/97   NASSAU                         EXTENSIVE DAMAGE REPORTED
                                          BY NASSAU COUNTY EOC IN
                                          SEA CLIFF...SANDS POINT..
                                          AND ELMONT.

0230 PM    PARAMUS                   NJ
07/18/97   BERGEN                         *** 1 DEAD ***
                                          TREE FELL KILLING PARKING
                                          LOT ATTENDANT AT PARAMUS
                                          COUNTRY CLUB. INITIAL
                                          REPORT.

0235 PM    BABYLON                   NY   60 MPH TSTM GUST
07/18/97   SUFFOLK                        ESTIMATED IN NORTH BABYLON

0245 PM    FARMINGDALE RPBLC ARPT    NY   60 MPH TSTM GUST
07/18/97   SUFFOLK                        SQUALL AT REPUBLIC AIRPORT

0250 PM    BABYLON                   NY   1 INCH HAIL
07/18/97   SUFFOLK

0250 PM    DEER PARK                 NY   WIND DAMAGE
07/18/97   SUFFOLK                        *** 12 INJ ***
                                          ROOFS BLOWN OFF TWO
                                          BUILDINGS...INITIAL
                                          ESTIMATE OF INJURIES TO
                                          PEOPLE INSIDE BUILDINGS.

0252 PM    DEER PARK                 NY   .75 INCH HAIL
07/18/97   SUFFOLK

0308 PM    BOHEMIA                   NY   58 MPH TSTM GUST
07/18/97   SUFFOLK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 3:55 PM EDTSevere Thunderstorm WarningOKXNaugatuck Valley Planning Region65 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 1997Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.