Alert archive / New York / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 12, NWS Buffalo, NY

June 27, 1993Wyoming County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 27, 1993, 4:01 PM EDT for Wyoming County, New York. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Jun 27, 1993, 4:01 PM EDT (20:01 UTC)
Expired
Jun 27, 1993, 5:00 PM EDT
In force
59 min
Issued by
NWS Buffalo, NY
Area
Whole counties

County Wyoming County, NY

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.0 hours before the alert went out and 46 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 1993-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 46 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 1993-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 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
46 J/kg
Mixed-layer CIN
-110 J/kg
Mixed-layer LCL
1288 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBUF 272002 RRA
SVRBUF
NYC121-272100-

BULLETIN -      EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
401 PM EDT SUN JUN 27 1993

THE NATIONAL WEATHER SERVICE HAS EXTENDED THE SEVERE THUNDERSTORM
WARNING UNTIL 500 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE STATE OF NEW YORK
      WYOMING

AT 400 PM BUFFALO RADAR DETECTED A SEVERE THUNDERSTORM JUST SOUTH
OF SPRINGVILLE IN EXTREME SOUTHERN ERIE COUNTY.  THE STORM WAS
MOVING NORTHEAST AT 35 MILES AN HOUR.  THERE HAS BEEN A HISTORY OF
HEAVY DOWNPOURS AND PEA SIZE HAIL WITH THIS ACTIVITY.

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.

 NIZIOL

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, Jun 27, 2:35 PM EDT, 1 hour 26 minutes before
NYZ001-002-003-004-005-021-022-272000-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE BUFFALO NY
235 PM EDT SUN JUN 27 1993

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE SOUTHERN TIER COUNTIES
OF NEW YORK UNTIL 10 PM THIS EVENING.

AT 225 PM...BUFFALO RADAR INDICATED NUMEROUS THUNDERSTORMS...SOME WITH
VERY HEAVY RAIN...OVER CATTARAUGUS AND CHAUTAUQUA COUNTIES OF NEW YORK.
THIS ACTIVITY EXTENDED SOUTHWEST ACROSS NORTHWEST PENNSYLVANIA AND
NORTHEAST OHIO.

THIS ACTIVITY HAS DEVELOPED RAPIDLY DURING THE PAST HOUR AND WAS MOVING
TOWARD THE EAST NORTHEAST AT 35 MILES AN HOUR. THESE STORMS WILL MOVE
ACROSS THE SOUTHERN TIER COUNTIES AS WELL AS SOUTHERN ERIE...WYOMING...
AND LIVINGSTON COUNTIES DURING THE NEXT HOUR. THEY SHOULD NOT AFFECT
THE BUFFALO AND ROCHESTER AREAS.

THESE STORMS MAY BE ACCOMPANIED BY FREQUENT LIGHTNING...TORRENTIAL
DOWNPOURS...STRONG WINDS...AND POSSIBLE HAIL. BE PREPARED TO TAKE
SHELTER IF THREATENING WEATHER APPROACHES OR A WARNING IS ISSUED.

MCLAUGHLIN
Special weather statement, Jun 27, 2:43 PM EDT, 1 hour 18 minutes before
NYZ001-002-003-004-005-021-022-272000-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE BUFFALO NY
235 PM EDT SUN JUN 27 1993

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE SOUTHERN TIER COUNTIES
OF NEW YORK UNTIL 10 PM THIS EVENING.

AT 225 PM...BUFFALO RADAR INDICATED NUMEROUS THUNDERSTORMS...SOME WITH
VERY HEAVY RAIN...OVER CATTARAUGUS AND CHAUTAUQUA COUNTIES OF NEW YORK.
THIS ACTIVITY EXTENDED SOUTHWEST ACROSS NORTHWEST PENNSYLVANIA AND
NORTHEAST OHIO.

THIS ACTIVITY HAS DEVELOPED RAPIDLY DURING THE PAST HOUR AND WAS MOVING
TOWARD THE EAST NORTHEAST AT 35 MILES AN HOUR. THESE STORMS WILL MOVE
ACROSS THE SOUTHERN TIER COUNTIES AS WELL AS SOUTHERN ERIE...WYOMING...
AND LIVINGSTON COUNTIES DURING THE NEXT HOUR. THEY SHOULD NOT AFFECT
THE BUFFALO AND ROCHESTER AREAS.

THESE STORMS MAY BE ACCOMPANIED BY FREQUENT LIGHTNING...TORRENTIAL
DOWNPOURS...STRONG WINDS...AND POSSIBLE HAIL. BE PREPARED TO TAKE
SHELTER IF THREATENING WEATHER APPROACHES OR A WARNING IS ISSUED.

MCLAUGHLIN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 3:03 PM EDTSevere Thunderstorm WarningBUFWyoming57 min
Jun 27, 3:45 PM EDTSevere Thunderstorm WarningBUFCattaraugus60 min
Jun 27, 7:49 PM EDTSevere Thunderstorm WarningBUFChautauqua, Erie56 min

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.