Alert archive / New York / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 13, NWS Burlington, VT

July 13, 1987Cayuga County, Oswego County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Jul 13, 1987, 3:10 PM EDT for Cayuga County, Oswego County, New York. It was in force for 90 min.

The area

The counties it named.

The facts

Issued
Jul 13, 1987, 3:10 PM EDT (19:10 UTC)
Expired
Jul 13, 1987, 4:40 PM EDT
In force
90 min
Issued by
NWS Burlington, VT
Area
Whole counties

Counties Cayuga County, NY, Oswego County, NY

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.2 hours before the alert went out and 191 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, Buffalo Intl Airport, NY at 12:00Z on 1987-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 900 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, Buffalo Intl Airport, NY at 12:00Z on 1987-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
900 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
791 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
66 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 KSYR 131911
SVRSYR
NYC011-075-132040-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SYRACUSE NY
310 PM EDT MON JUL 13 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 440 PM EDT FOR THE FOLLOWING COUNTIES OF
 
CENTRAL NY... CAYUGA... OSWEGO                                           
                                                                         
AT 3:00 PM EDT RADAR INDICATED A LINE OF STRONG THUNDERSTORMS 
EXTENDING FROM JUST NORTH OF OSWEGO SOUTH ACROSS EASTERN WAYNE  
COUNTY TO NEAR WATERLOO.  THE LINE IS MOVING NORTHEAST AT ONLY 
10 MPH. 
                                                                         
BE ON THE ALERT FOR THUNDERSTORMS ACCOMPANIED BY FREQUENT LIGHTNING      
STRONG DAMAGING WINDS AND LARGE HAIL.  LOCALLY HEAVY RAIN MAY ALSO       
CAUSE DRAINAGE FLOODING.                                                 
                                                                         
IF THREATENING WEATHER APPROACHES GO TO A SAFE PLACE IMMEDIATELY.        
IN HOMES A BASEMENT OR INTERIOR ROOM IS THE SAFEST LOCATION.             
 
BARTHOLF

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, Jul 13, 12:09 PM EDT, 3 hours 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
1210 NOON EDT SUN JUL 12 1987

AT 1150 AM THE NATIONAL WEATHER SERVICE RADAR AT BURLINGTON SHOWED
SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING THROUGHOUT THE STATE.

THESE THUNDERSTORMS CONTAIN VERY HEAVY RAIN...FREQUENT LIGHTNING AND
STRONG GUSTY WINDS.

THE STORMS ARE MOVING  NORTHEAST AT 15 MPH. DUE TO THE SLOW  MOVMENT
OF THE STORMS THE RAIN MAY BE HEAVY ENOUGH TO CAUSE SOME FLOODING
OF POOR DRAINAGE AREAS SMALL STREAMS AND HIGHWAY UNDERPASSES.

THE STRONGEST OF THE STORMS IS FROM NORTH HYDE PARK IN LAMOILLE
COUNTY TO NEAR MONTPELIER IN WASHINGTON COUNTY.

THESE STORMS WILL CONTINUE TO DEVELOP THROUGHOUT THE DAY.

END/JOSEPH
Special weather statement, Jul 13, 3:09 PM EDT, 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
0310 PM EDT MON JUL 13 1987

AT 3PM THE NATIONAL WEATHER SERVICE RADAR AT BURLINGTON SHOWED AN
AREA OF STRONG THUNDERSTORMS JUST WEST OF PLATTSBURGH NEW YORK AND
SOUTH OF DANNENORA IN CLINTON COUNTY. THESE THUNDERSTORMS CONTAIN
VERY HEAVY RAIN...PEA SIZE HAIL...FREQUENT LIGHTNING AND STRONG
GUSTY WINDS.

THE STORMS ARE MOVING  NORTH AT 10 MPH. DUE TO THE SLOW  MOVMENT
OF THE STORMS THE RAIN MAY BE HEAVY ENOUGH TO CAUSE SOME FLOODING
OF POOR DRAINAGE AREAS SMALL STREAMS AND HIGHWAY UNDERPASSES.

SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP IN VERMONT AT THIS TIME
AND WILL CONTINUE TO DEVELOP THROUGHOUT THE DAY.

END/JOSEPLH

Nearby

Severe Thunderstorm Warnings in New York, 1987Every severe thunderstorm warning in 1987

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.