Alert archive / New York / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 32, NWS Buffalo, NY

August 15, 1991Erie County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 15, 1991, 10:55 PM EDT for Erie County, New York. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Aug 15, 1991, 10:55 PM EDT (02:55 UTC)
Expired
Aug 15, 1991, 11:50 PM EDT
In force
55 min
Issued by
NWS Buffalo, NY
Area
Whole counties

County Erie County, NY

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.9 hours before the alert went out and 20 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 00:00Z on 1991-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 1991-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1536 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
159 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 KBUF 160253
SVRBUF
NYC029-150350-

BULLETIN  EBS ACTIVATION  REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION
NATIONAL WEATHER SERVICE BUFFALO NY
1055 PM EDT THU AUG 15 1991

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 1150 PM EDT FOR PEOPLE IN THE FOLLOWING NEW YORK
COUNTIES...

ERIE

BUFFALO WEATHER RADAR DETECTED A SEVERE THUNDERSTORM OVER NORTHERN
ERIE COUNTY IN THE BUFFALO NORTHTOWNS.

THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR.

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.

GJS

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, Aug 15, 10:37 PM EDT, 18 minutes before
NYZ001-021-160400

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE BUFFALO NY
1030 PM EDT THU AUG 15 1991

...THUNDERSTORMS ARE MOVING INTO THE BUFFALO AREA...

AT 1030 PM... THUNDERSTORMS HAVE DEVELOPED RAPIDLY OVER THE NIAGARA
PENINSULA DURING THE PAST HOUR. THESE STORMS WERE NOW OVER THE CITY OF
NIAGARA FALLS AND ST CATHARINES AND WERE MOVING TOWARD THE EAST SOUTHEAST
AT 30 MILES AN HOUR.

THIS ACTIVITY SHOULD CROSS THE METRO BUFFALO AREA...ESPECIALLY THE NORTHERN
SUBURBS...DURING THE NEXT HOUR.

BE ON THE LOOKOUT FOR FREQUENT LIGHTNING...STRONG GUSTY WINDS...AND
HEAVY DOWNPOURS WITH THESE STORMS AS THEY CROSS THE AREA.

ELSEWHERE...SHOWERS AND THUNDERSTORMS CONTIWNUED ACROSS ONTARIO WEST AND
NORTH OF TORONTO. MOVEMENT WAS EAST AT 30 MILES AN HOUR.
MCLAUGHLIN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 3:01 PM EDTSevere Thunderstorm WarningBUFNiagara, Orleans44 min
Aug 16, 3:48 PM EDTSevere Thunderstorm WarningBUFNiagara57 min

Nearby

Severe Thunderstorm Warnings in New York, 1991Every severe thunderstorm warning in 1991

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.