Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 86, NWS Buffalo, NY

August 24, 2011Genesee County, Monroe County, Orleans County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 24, 2011, 10:54 PM EDT for Genesee County, Monroe County, Orleans County, New York. It was in force for 41 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: Aug 24, 2011, 10:54 PM EDT (02:54 UTC)
Expired: Aug 24, 2011, 11:35 PM EDT
In force: 41 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Genesee County, NY, Monroe County, NY, Orleans County, NY

The radar

The Buffalo radar (KBUF), 64 km from the middle of the area, began a volume at 02:55 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Aug 24, 9:18 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.9 hours before the alert went out and 63 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

318 
WUUS51 KBUF 250254
SVRBUF
NYC037-055-073-250400-
/O.NEW.KBUF.SV.W.0086.110825T0254Z-110825T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1054 PM EDT WED AUG 24 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN GENESEE COUNTY IN WESTERN NEW YORK
  WESTERN MONROE COUNTY IN WESTERN NEW YORK
  ORLEANS COUNTY IN WESTERN NEW YORK

* UNTIL MIDNIGHT EDT

* AT 1051 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM WATERPORT TO 12 MILES SOUTHWEST OF MEDINA...OR ALONG A LINE
  EXTENDING FROM 8 MILES NORTHWEST OF ALBION TO 10 MILES SOUTHEAST OF
  LOCKPORT...AND MOVING EAST AT 50 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  KENDALL...
  ALBION...
  MEDINA...
  OAKFIELD...
  HAMLIN BEACH...
  BYRON...
  SPENCERPORT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS...AND DEADLY CLOUD TO GROUND 
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY 
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 4312 7846 4339 7828 4338 7797 4336 7787
      4335 7776 4333 7771 4328 7764 4298 7793
      4306 7847
TIME...MOT...LOC 0253Z 277DEG 42KT 4334 7826 4308 7852

$$

HITCHCOCK

1 follow-up statement

484 
WWUS51 KBUF 250335
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1135 PM EDT WED AUG 24 2011

NYC037-055-073-250345-
/O.CAN.KBUF.SV.W.0086.000000T0000Z-110825T0400Z/
GENESEE NY-ORLEANS NY-MONROE NY-
1135 PM EDT WED AUG 24 2011

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN MONROE...ORLEANS AND
NORTHERN GENESEE COUNTIES IS CANCELLED...

AT 1135 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO LONGER
SEVERE...THUS THE WARNING HAS BEEN CANCELLED.

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

LAT...LON 4312 7846 4339 7828 4338 7797 4336 7787
      4335 7776 4333 7771 4328 7764 4298 7793
      4306 7847
TIME...MOT...LOC 0335Z 277DEG 42KT 4328 7759 4302 7785

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 24, 9:47 PM EDT	Special Marine Warning	BUF		58 min
Aug 24, 9:56 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara, Orleans	64 min
Aug 24, 10:06 PM EDT	Special Marine Warning	BUF		54 min
Aug 24, 10:21 PM EDT	Special Marine Warning	BUF		54 min
Aug 24, 10:24 PM EDT	Special Marine Warning	BUF		96 min
Aug 24, 10:34 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Chautauqua, Erie	56 min
Aug 24, 10:37 PM EDT	Special Weather Statement	BUF	Erie	53 min
Aug 24, 10:45 PM EDT	Severe Thunderstorm Warning	BUF	Erie	49 min
Aug 24, 11:33 PM EDT	Special Weather Statement	BUF	Allegany, Cattaraugus, Livingston, Monroe, Ontario, Wayne and 1 more	87 min
Aug 24, 11:38 PM EDT	Special Marine Warning	BUF		52 min
Aug 24, 11:59 PM EDT	Special Marine Warning	BUF		61 min
Aug 25, 12:17 AM EDT	Special Marine Warning	BUF		73 min
Aug 25, 12:22 AM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Oswego	53 min
Aug 25, 12:27 AM EDT	Special Weather Statement	BUF	Allegany, Cattaraugus, Chautauqua	63 min
Aug 25, 12:42 AM EDT	Areal Flood Advisory	BUF	Cattaraugus, Chautauqua, Erie	3 hr
Aug 25, 1:06 AM EDT	Special Weather Statement	BUF	Lewis	54 min
Aug 25, 1:17 AM EDT	Special Marine Warning	BUF		58 min
Aug 25, 1:58 AM EDT	Special Weather Statement	BUF	Allegany	62 min
Aug 25, 2:31 AM EDT	Special Weather Statement	BUF	Ontario	59 min
Aug 25, 3:05 AM EDT	Special Weather Statement	BUF	Oswego	55 min
Aug 25, 3:23 AM EDT	Special Weather Statement	BUF	Niagara	52 min
Aug 25, 12:12 PM EDT	Special Weather Statement	BUF	Oswego	63 min

Nearby

Severe Thunderstorm Warnings in New York, 2011 Every 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.