Alert archive / New York / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 17, NWS Buffalo, NY
NWS Buffalo, NY issued this severe thunderstorm warning at May 23, 2011, 10:30 PM EDT for Allegany County, Cattaraugus County, New York. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 23, 2011, 10:30 PM EDT (02:30 UTC)
- Expired
- May 23, 2011, 11:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
Counties Allegany County, NY, Cattaraugus County, NY
The radar
The Buffalo radar (KBUF), 102 km from the middle of the area, began a volume at 02:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.5 hours before the alert went out and 99 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
- 191 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 1252 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 226 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
894
WUUS51 KBUF 240230
SVRBUF
NYC003-009-240315-
/O.NEW.KBUF.SV.W.0017.110524T0230Z-110524T0315Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1030 PM EDT MON MAY 23 2011
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN ALLEGANY COUNTY IN WESTERN NEW YORK
SOUTHEASTERN CATTARAUGUS COUNTY IN WESTERN NEW YORK
* UNTIL 1115 PM EDT
* AT 1030 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM HINSDALE TO ST. BONAVENTURE TO
10 MILES SOUTHWEST OF ALLEGANY...OR ALONG A LINE EXTENDING FROM 5
MILES NORTH OF OLEAN TO OLEAN TO BRADFORD...AND MOVING EAST AT 40
MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE...
WELLSVILLE...
ALFRED...
WHITESVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THESE STORMS.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
THESE STORMS HAVE A HISTORY OF PRODUCING WIND DAMAGE ACROSS SOUTHERN
CHAUTAUQUA COUNTY. THIS IS AN EXTREMELY DANGEROUS SITUATION. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!
&&
LAT...LON 4200 7871 4206 7858 4220 7851 4226 7773
4199 7775 4199 7871
TIME...MOT...LOC 0230Z 271DEG 37KT 4216 7836 4206 7840
4200 7856
$$
HIBBERT2 follow-up statements
264
WWUS51 KBUF 240252
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1052 PM EDT MON MAY 23 2011
NYC003-009-240315-
/O.CON.KBUF.SV.W.0017.000000T0000Z-110524T0315Z/
ALLEGANY NY-CATTARAUGUS NY-
1052 PM EDT MON MAY 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR SOUTHEASTERN CATTARAUGUS AND SOUTHERN ALLEGANY COUNTIES...
AT 1049 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM FRIENDSHIP TO RICHBURG TO
PORTVILLE...MOVING EAST AT 45 MPH.
SOME LOCATIONS IN THE WARNING INCLUDE...
BELMONT...
FRIENDSHIP...
SCIO...
WELLSVILLE...
ALFRED...
WHITESVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THESE STORMS.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 4199 7841 4206 7839 4212 7828 4222 7817
4226 7773 4199 7775
TIME...MOT...LOC 0251Z 271DEG 37KT 4220 7810 4210 7814
4200 7832
$$
HIBBERT731
WWUS51 KBUF 240316
SVSBUF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1116 PM EDT MON MAY 23 2011
NYC003-009-240326-
/O.EXP.KBUF.SV.W.0017.000000T0000Z-110524T0315Z/
ALLEGANY NY-CATTARAUGUS NY-
1116 PM EDT MON MAY 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CATTARAUGUS AND
SOUTHERN ALLEGANY COUNTIES HAS BEEN REPLACED BY ANOTHER SEVERE
THUNDERSTORM WARNING THAT ONLY INCLUDES SOUTHEASTERN ALLEGANY
COUNTY...
LAT...LON 4199 7841 4206 7839 4212 7828 4222 7817
4226 7773 4199 7775
TIME...MOT...LOC 0252Z 271DEG 37KT 4220 7809 4210 7813
4200 7831
$$
RSH/WCHThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 8:23 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 37 min |
| May 23, 8:45 PM EDT | Special Marine Warning | BUF | 30 min | |
| May 23, 8:54 PM EDT | Tornado Warning | BUF | Chautauqua | 36 min |
| May 23, 9:14 PM EDT | Severe Thunderstorm Warning | BUF | Erie | 17 min |
| May 23, 9:24 PM EDT | Flash Flood Warning | BUF | Chautauqua | 3 hr |
| May 23, 9:59 PM EDT | Flash Flood Warning | BUF | Cattaraugus, Chautauqua | 3 hr |
| May 23, 10:05 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 25 min |
| May 23, 10:56 PM EDT | Areal Flood Advisory | BUF | Cattaraugus, Chautauqua, Erie, Wyoming | 3 hr |
| May 23, 11:09 PM EDT | Flash Flood Warning | BUF | Allegany, Cattaraugus, Wyoming | 3 hr |
| May 23, 11:13 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 17 min |
| May 24, 9:27 AM EDT | Small Craft Advisory | BUF | 4 hr |
Nearby
Severe Thunderstorm Warnings in New York, 2011Every severe thunderstorm warning in 2011
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; radar from the NEXRAD Level II archive.