Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 83, NWS Buffalo, NY

August 24, 2011Erie County, Niagara County, Orleans County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 24, 2011, 9:56 PM EDT for Erie County, Niagara County, Orleans County, New York. It was in force for 64 min. 3 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
Aug 24, 2011, 9:56 PM EDT (01:56 UTC)
Expired
Aug 24, 2011, 11:00 PM EDT
In force
64 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Erie County, NY, Niagara County, NY, Orleans County, NY

The radar

The Buffalo radar (KBUF), 27 km from the middle of the area, began a volume at 01:55 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
Aug 24, 10:18 PM EDTTSTM WND DMGLewiston, NYWIRES DOWN
Aug 24, 10:25 PM EDTTSTM WND DMGSanborn, NYMULTIPLE TREES AND LIMBS DOWN.
Aug 24, 10:46 PM EDTTSTM WND DMGMiddleport, NYWIRES DOWN

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 24, 9:18 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.9 hours before the alert went out and 30 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 00:00Z on 2011-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 352 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 00:00Z on 2011-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 327 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
352 J/kg
Mixed-layer CIN
-345 J/kg
Mixed-layer LCL
1391 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
327 m²/s²
0-3 km storm-relative helicity
391 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

110 
WUUS51 KBUF 250156
SVRBUF
NYC029-063-073-250300-
/O.NEW.KBUF.SV.W.0083.110825T0156Z-110825T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
956 PM EDT WED AUG 24 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME NORTHEASTERN ERIE COUNTY IN WESTERN NEW YORK
  NIAGARA COUNTY IN WESTERN NEW YORK
  WESTERN ORLEANS COUNTY IN WESTERN NEW YORK

* UNTIL 1100 PM EDT

* AT 951 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 28 MILES NORTHWEST OF  
  YOUNGSTOWN TO 30 MILES WEST OF LEWISTON....AND MOVING EAST AT 50 
  MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  YOUNGSTOWN...
  SANBORN...
  PENDLETON...
  NEWFANE...
  MIDDLEPORT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM EDT
THURSDAY MORNING FOR WESTERN NEW YORK.

&&

LAT...LON 4313 7906 4325 7906 4326 7908 4327 7907
      4338 7854 4338 7825 4337 7823 4313 7840
      4313 7847 4306 7847 4304 7901 4307 7901
      4307 7908
TIME...MOT...LOC 0155Z 261DEG 43KT 4357 7931 4346 7929
          4334 7929 4325 7936 4318 7956

$$

TJP
2 follow-up statements
749 
WWUS51 KBUF 250228
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1028 PM EDT WED AUG 24 2011

NYC029-063-073-250300-
/O.CON.KBUF.SV.W.0083.000000T0000Z-110825T0300Z/
NIAGARA NY-ORLEANS NY-ERIE NY-
1028 PM EDT WED AUG 24 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT
FOR EXTREME NORTHEASTERN ERIE...WESTERN ORLEANS AND NIAGARA
COUNTIES...

AT 1023 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 OLCOTT TO LEWISTON...
MOVING EAST AT 50 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  THIRTY MILE POINT...
  PENDLETON...
  RAPIDS...
  LYNDONVILLE...
  MIDDLEPORT...
  MEDINA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THESE STORMS...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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM EDT
THURSDAY MORNING FOR WESTERN NEW YORK.

&&

LAT...LON 4311 7901 4313 7906 4325 7906 4326 7908
      4327 7907 4338 7854 4338 7825 4337 7823
      4313 7840 4313 7847 4306 7847 4304 7901
TIME...MOT...LOC 0228Z 261DEG 43KT 4333 7864 4311 7896

$$

TJP
368 
WWUS51 KBUF 250305
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1105 PM EDT WED AUG 24 2011

NYC029-063-073-250316-
/O.EXP.KBUF.SV.W.0083.000000T0000Z-110825T0300Z/
NIAGARA NY-ORLEANS NY-ERIE NY-
1105 PM EDT WED AUG 24 2011

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHEASTERN ERIE...
WESTERN ORLEANS AND NIAGARA COUNTIES HAS EXPIRED...

AT 1106 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE WARNED AREA...
THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM EDT
THURSDAY MORNING FOR WESTERN NEW YORK.

LAT...LON 4311 7901 4313 7906 4325 7906 4326 7908
      4327 7907 4338 7854 4338 7825 4337 7823
      4313 7840 4313 7847 4306 7847 4304 7901
TIME...MOT...LOC 0228Z 261DEG 43KT 4333 7864 4311 7896

$$

TJP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 24, 9:47 PM EDTSpecial Marine WarningBUF58 min
Aug 24, 10:06 PM EDTSpecial Marine WarningBUF54 min
Aug 24, 10:21 PM EDTSpecial Marine WarningBUF54 min
Aug 24, 10:24 PM EDTSpecial Marine WarningBUF96 min
Aug 24, 10:34 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Chautauqua, Erie56 min
Aug 24, 10:37 PM EDTSpecial Weather StatementBUFErie53 min
Aug 24, 10:45 PM EDTSevere Thunderstorm WarningBUFErie49 min
Aug 24, 10:54 PM EDTSevere Thunderstorm WarningBUFGenesee, Monroe, Orleans41 min
Aug 24, 11:33 PM EDTSpecial Weather StatementBUFAllegany, Cattaraugus, Livingston, Monroe, Ontario, Wayne and 1 more87 min
Aug 24, 11:38 PM EDTSpecial Marine WarningBUF52 min
Aug 24, 11:59 PM EDTSpecial Marine WarningBUF61 min
Aug 25, 12:17 AM EDTSpecial Marine WarningBUF73 min
Aug 25, 12:22 AM EDTSevere Thunderstorm WarningBUFJefferson, Oswego53 min
Aug 25, 12:27 AM EDTSpecial Weather StatementBUFAllegany, Cattaraugus, Chautauqua63 min
Aug 25, 12:42 AM EDTAreal Flood AdvisoryBUFCattaraugus, Chautauqua, Erie3 hr
Aug 25, 1:06 AM EDTSpecial Weather StatementBUFLewis54 min
Aug 25, 1:17 AM EDTSpecial Marine WarningBUF58 min
Aug 25, 1:58 AM EDTSpecial Weather StatementBUFAllegany62 min
Aug 25, 2:31 AM EDTSpecial Weather StatementBUFOntario59 min
Aug 25, 3:05 AM EDTSpecial Weather StatementBUFOswego55 min
Aug 25, 3:23 AM EDTSpecial Weather StatementBUFNiagara52 min
Aug 25, 12:12 PM EDTSpecial Weather StatementBUFOswego63 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.