Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 23, NWS Buffalo, NY

May 26, 2011Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 26, 2011, 5:30 PM EDT for Chautauqua County, New York. It was in force for 60 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 26, 2011, 5:30 PM EDT (21:30 UTC)
Expired
May 26, 2011, 6:30 PM EDT
In force
60 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 107 km from the middle of the area, began a volume at 21:30 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.

What was reported inside it

TimeReportWhereRemark
May 26, 5:50 PM EDTTSTM WND DMGSherman, NYTREES WIRES DOWN
May 26, 6:00 PM EDTTSTM WND DMGMayville, NYTREES WIRES DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.5 hours before the alert went out and 107 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 2011-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 72 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2011-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.19395878Sfc1 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
72 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
868 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
329 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

945 
WUUS51 KBUF 262130
SVRBUF
NYC013-262230-
/O.NEW.KBUF.SV.W.0023.110526T2130Z-110526T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
530 PM EDT THU MAY 26 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHAUTAUQUA COUNTY IN WESTERN NEW YORK

* UNTIL 630 PM EDT

* AT 525 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 12
  MILES WEST OF FINDLEY LAKE...OR 36 MILES WEST OF JAMESTOWN...AND
  MOVING NORTHEAST AT 45 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  WESTFIELD...
  FREDONIA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT THURSDAY EVENING
FOR CENTRAL NEW YORK.

&&

LAT...LON 4226 7977 4228 7975 4248 7927 4233 7908
      4200 7933 4199 7974 4200 7977
TIME...MOT...LOC 2130Z 238DEG 41KT 4214 7988

$$

TMA
3 follow-up statements
821 
WWUS51 KBUF 262200
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
600 PM EDT THU MAY 26 2011

NYC013-262230-
/O.CON.KBUF.SV.W.0023.000000T0000Z-110526T2230Z/
CHAUTAUQUA NY-
600 PM EDT THU MAY 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR CENTRAL CHAUTAUQUA COUNTY...

AT 554 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR MAYVILLE...OR 17 MILES SOUTHWEST OF FREDONIA...MOVING
NORTHEAST AT 45 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  STOCKTON...
  CASSADAGA...
  FREDONIA...
  ARKWRIGHT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT THURSDAY EVENING
FOR CENTRAL NEW YORK.

&&

LAT...LON 4208 7960 4227 7973 4248 7927 4233 7908
      4208 7927
TIME...MOT...LOC 2200Z 238DEG 41KT 4230 7947

$$

RSH
129 
WWUS51 KBUF 262218
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
618 PM EDT THU MAY 26 2011

NYC013-262230-
/O.CON.KBUF.SV.W.0023.000000T0000Z-110526T2230Z/
CHAUTAUQUA NY-
618 PM EDT THU MAY 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR EASTERN CHAUTAUQUA COUNTY...

AT 615 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
 THIS STORM WAS LOCATED NEAR CASSADAGA...OR 6 MILES SOUTH OF
FREDONIA...MOVING NORTHEAST AT 45 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  RURAL CHAUTAUQUA COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN THIS STORM. 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.

&&

LAT...LON 4210 7925 4238 7949 4248 7927 4233 7908
TIME...MOT...LOC 2218Z 238DEG 41KT 4241 7923

$$

RSH
118 
WWUS51 KBUF 262230
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
630 PM EDT THU MAY 26 2011

NYC013-262240-
/O.EXP.KBUF.SV.W.0023.000000T0000Z-110526T2230Z/
CHAUTAUQUA NY-
630 PM EDT THU MAY 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHAUTAUQUA COUNTY HAS
EXPIRED...

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE 
STILL POSSIBLE FROM A SEPARATE...NEWLY FORMED THUNDERSTORM. THE 
ORIGINAL SEVERE STORM HAS EXITED THE AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
FRIDAY MORNING FOR WESTERN NEW YORK.

LAT...LON 4210 7925 4238 7949 4248 7927 4233 7908
TIME...MOT...LOC 2230Z 238DEG 41KT 4248 7907

$$

RSH

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 8:28 PM EDTSpecial Weather StatementBUFChautauqua62 min
May 25, 9:01 PM EDTSevere Thunderstorm WarningBUFChautauqua59 min
May 25, 9:03 PM EDTSpecial Marine WarningBUF57 min
May 25, 9:41 PM EDTAreal Flood AdvisoryBUFErie, Genesee, Niagara, Orleans, Wyoming3 hr
May 25, 9:46 PM EDTSpecial Marine WarningBUF44 min
May 25, 10:11 PM EDTAreal Flood AdvisoryBUFCattaraugus, Chautauqua3 hr
May 25, 10:14 PM EDTSpecial Marine WarningBUF31 min
May 26, 7:03 AM EDTSpecial Weather StatementBUFGenesee, Monroe, Niagara, Orleans57 min
May 26, 10:22 AM EDTSevere Thunderstorm WarningBUFJefferson53 min
May 26, 2:56 PM EDTSevere Thunderstorm WarningBUFLewis64 min
May 26, 3:20 PM EDTSevere Thunderstorm WarningBUFLewis40 min
May 26, 3:37 PM EDTSmall Craft AdvisoryBUF19 hr
May 26, 5:43 PM EDTTornado WarningBUFChautauqua32 min
May 26, 6:08 PM EDTTornado WarningBUFCattaraugus, Chautauqua38 min
May 26, 7:04 PM EDTSpecial Weather StatementBUFGenesee, Monroe56 min
May 26, 7:05 PM EDTAreal Flood AdvisoryBUFChautauqua3 hr
May 26, 7:24 PM EDTSpecial Marine WarningBUF51 min
May 26, 7:38 PM EDTSpecial Marine WarningBUF54 min
May 26, 7:55 PM EDTSpecial Weather StatementBUFLewis65 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.