Alert archive / New York / Tornado Warnings in 1991

Tornado Warning 2, NWS Binghamton, NY

April 9, 1991Seneca County, Yates County, New York

NWS Binghamton, NY issued this tornado warning at Apr 9, 1991, 7:15 PM EDT for Seneca County, Yates County, New York. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Apr 9, 1991, 7:15 PM EDT (23:15 UTC)
Expired
Apr 9, 1991, 8:00 PM EDT
In force
45 min
Issued by
NWS Binghamton, NY
Area
Whole counties

Counties Seneca County, NY, Yates County, NY

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.3 hours before the alert went out and 144 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 1991-04-09Temperature 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 12:00Z on 1991-04-09The 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
697 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
112 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 KROC 092316
TORROC
NYC099-123-100000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ROCHESTER NY
715 PM EDT TUE APR 9 1991

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 8 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES

   IN THE STATE OF NEW YORK
      EASTERN YATES AND SOUTHERN SENECA

AT 710 PM EDT A SEVERE THUNDERSTORM WAS INDICATED BY RADAR IN WESTERN
YATES COUNTY, NEW YORK.  TORNADOES AND LARGE HAIL HAVE BEEN REPORTED
WITH THIS SEVERE THUNDERSTORM.  THE SEVERE THUNDERSTORM WAS MOVING
TOWARD THE EAST NORTHEAST AT 45 MILES AN HOUR.

IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE TO BE IS IN
A BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...FIND SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

THIS IS NOT A DRILL.

 ENGLISH

What forecasters said that day

The local office's own words before this tornado 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, Apr 9, 7:12 PM EDT, 3 minutes before
NYZ004-005-100000-

SPECIAL WEATHER STATEMENT - THUNDERSTORMS
NATIONAL WEATHER SERVICE SYRACUSE NY
710 PM EDT TUE APR 9 1991

...STRONG THUNDERSTORMS APPROACHING CENTRAL NEW YORK...

AT 700 PM EDT...WEATHER SERVICE RADAR SHOWED AN AREA OF STRONG
THUNDERSTORMS MOVING THROUGH THE WESTERN FINGER LAKES REGION.  THE
STORMS WERE MOVING TO THE EAST NORTHEAST AT 60 MPH AND SHOULD BE
MOVING INTO CAYUGA COUNTY DURING THE NEXT HOUR.

THE STORMS ARE EXPECTED TO MOVE RAPIDLY THROUGH MOST OF CENTRAL NEW YORK
DURING THE EVENING TONIGHT.

REMEMBER...A TORNADO WATCH IS IN EFFECT FOR ALL OF CENTRAL NEW YORK
UNTIL 1AM EDT WEDNESDAY MORNING.  PERSONS SHOULD BE ON THE ALERT FOR
SEVERE WEATHER AND TAKE SHELTER IMMEDIATELY IF THREATENING WEATHER
APPROACHES.
JUNG

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 5:50 PM EDTTornado WarningBGMLivingston, Ontario55 min
Apr 9, 6:24 PM EDTSevere Thunderstorm WarningBGMSteuben66 min
Apr 9, 6:50 PM EDTSevere Thunderstorm WarningBGMOntario, Yates60 min
Apr 9, 7:19 PM EDTTornado WarningBGMSteuben56 min
Apr 9, 7:43 PM EDTTornado WarningBGMSchuyler47 min

Nearby

Tornado Warnings in New York, 1991Every tornado warning in 1991Tornadoes 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.