Alert archive / New York / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 15, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at Jun 12, 1991, 10:40 AM EDT for Allegany County, Cattaraugus County, New York. It was in force for 80 min.
The area
The counties it named.
The facts
- Issued
- Jun 12, 1991, 10:40 AM EDT (14:40 UTC)
- Expired
- Jun 12, 1991, 12:00 PM EDT
- In force
- 80 min
- Issued by
- NWS Buffalo, NY
- Area
- Whole counties
Counties Allegany County, NY, Cattaraugus County, NY
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 2.7 hours before the alert went out and 80 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.
- Mixed-layer CAPE
- 1191 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 579 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBUF 121446 COR SVRBUF NYC009-003-121600- BULLETIN EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM NATIONAL WEATHER SERVICE BUFFALO NY 1040 AM EDT WED JUN 12 1991 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 12 NOON EDT FOR PEOPLE IN THE FOLLOWING NEW YORK COUNTIES... ALLEGANY AND EASTERN CATTARAUGUS AT 1040AM BUFFALO RADAR INDICATED A SEVERE THUNDERSTORM OVER EASTERN CATTARAUGUS COUNTY...JUST NORTH OF FRANKLINVILLE. THE THUNDERSTORM WAS MOVING EAST SOUTHEAST AT 35 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 APPROACeHES... GO TO A SAFE PLACE IMMEDIATELY. IN HOMES A BASEMENT OR INTERIOR ROOM IS THE SAFEST LOCATION. LEVAN
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 12, 9:04 AM EDT, 1 hour 36 minutes before
NYZ002-121500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER NY 855 AM EDT WED JUN 12 1991 ...A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN MOVING THROUGH THE THE WESTERN FINGER LAKES REGION... AT 855 AM WEATHER SERVICE RADAR INDICATED A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDING FROM CENTRAL LAKE ONTARIO NORTHEAST OF FAIR HAVEN TO CENTRAL WYOMING COUNTY. THIS LINE IS MOVING SOUTHEAST AT ABOUT 50 MPH. SEVERAL OF THESE THUNDERSTORMS HAVE HEAVY DOWNPOURS WHICH MAY CAUSE SOME FLOODING OF POOR DRAINAGE AREAS. AT THE ROCHESTER AIRPORT .60 INCHES OF RAIN FELL IN LESS THAN FIFTEEN MINUTES. BE ON THE LOOKOUT FOR THUNDERSTORMS WHICH MAY HAVE GUSTY WINDS...FREQUENT LIGHTNING AND HEAVY DOWNPOURS. KB
Special weather statement, Jun 12, 10:31 AM EDT, 9 minutes before
NYZ002-121600- SPECIAL WEATHER STATEMENT - THUNDERSTORMS NATIONAL WEATHER SERVICE ROCHESTER NY 1025 AM EDT WED JUN 12 1991 ...A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN MOVING THROUGH THE THE WEST
Special weather statement, Jun 12, 10:38 AM EDT, 2 minutes before
NYZ001-021-022-002-003-004-005-121140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BUFFALO NY 1025 A.M. EST WED JUN 12 1989 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 3 PM FOR A LARGE PART OF CENTRAL NEW YORK EAST OF ROCHESTER. THE WATCH INCLUDES CATTARAUGUS AND ALLEGANY COUNTIES IN WESTERN NEW YORK. AT 1025 AM...A LINE OF NUMEROUS SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...HAIL...STRONG GUSTY WINDS AND DANGEROUS LIGHTNING... EXTENDED FROM JUST EAST OF SPRINGVILLE IN SOUTHERN ERIE COUNTY NORTHEAST ACROSS THE CENTRAL GENESEE RIVER VALLEY...THE NORTHERN FINGERLAKES TO ABOUT 15 MILES NORTH OF SYRACUSE. A THUNDERSTORM IN THIS LINE PRODUCED PEA SIZE HAIL IN WARSAW THE PAST HOUR. ELSEWHERE...A SECOND LINE OF SHOWERS AND THUNDERSTORMS...SOME WITH HEAVY RAIN...EXTENDED FROM 40 MILES WEST OF HAMILTON ONTARIO EAST ACROSS THE NORTHERN NIAGARA PENINSULA AND NORTHERN PORTIONS OF NIAGARA AND ORLEANS COUNTIES THEN EXTENDING INTO CENTRAL LAKE ONTARIO. MOVEMENT OF ALL ACTIVITY WAS SOUTHEAST AT 20 MILES AN HOUR. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS SEVERE THUNDERSTORMS ARE POSSIBLE IN OR NEAR THE WATCH AREA. IF THREATHENING WEATHER APPROACHES ...TAKE SHELTER IMMEDIATELY. PUKAJLO
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.