Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 19, NWS Buffalo, NY

May 25, 2011Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 25, 2011, 9:01 PM EDT for Chautauqua County, New York. It was in force for 59 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 25, 2011, 9:01 PM EDT (01:01 UTC)
Expired: May 25, 2011, 10:00 PM EDT
In force: 59 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 94 km from the middle of the area, began a volume at 01:01 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

Time	Report	Where	Remark
May 25, 9:50 PM EDT	MARINE TSTM WIND 43	Dunkirk, NY
May 25, 10:00 PM EDT	TSTM WND DMG	1 N Kiantone, NY	TREE DOWN ACROSS ROUTE 62

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 00:00Z, 1.0 hours before the alert went out and 95 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: 14 J/kg
Mixed-layer CIN: -176 J/kg
Mixed-layer LCL: 1239 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 279 m²/s²
0-3 km storm-relative helicity: 471 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

028 
WUUS51 KBUF 260101
SVRBUF
NYC013-260200-
/O.NEW.KBUF.SV.W.0019.110526T0101Z-110526T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
901 PM EDT WED MAY 25 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 1000 PM EDT

* AT 856 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 20 MILES WEST OF FINDLEY 
  LAKE TO 29 MILES SOUTHWEST OF CLYMER...AND MOVING EAST AT 40 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  FINDLEY LAKE...
  CLYMER...
  WESTFIELD...
  CHAUTAUQUA INSTITUTE...
  LAKEWOOD...
  FREDONIA...

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.

&&

LAT...LON 4227 7977 4244 7943 4246 7943 4247 7939
      4250 7936 4256 7920 4223 7911 4199 7914
      4199 7976 4203 7977
TIME...MOT...LOC 0059Z 249DEG 34KT 4221 8006 4198 8000
          4176 8003

$$

HIBBERT

2 follow-up statements

707 
WWUS51 KBUF 260133
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
933 PM EDT WED MAY 25 2011

NYC013-260200-
/O.CON.KBUF.SV.W.0019.000000T0000Z-110526T0200Z/
CHAUTAUQUA NY-
933 PM EDT WED MAY 25 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR CHAUTAUQUA COUNTY...

AT 931 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM BARCELONA TO SHERMAN TO 8 
MILES SOUTH OF CLYMER...MOVING NORTHEAST AT 50 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  PANAMA...
  STOCKTON...
  DUNKIRK...
  ARKWRIGHT...
  FORESTVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4228 7974 4244 7943 4246 7943 4247 7939
      4250 7936 4256 7920 4223 7911 4199 7914
      4199 7976 4203 7977
TIME...MOT...LOC 0133Z 246DEG 43KT 4236 7958 4216 7952
          4193 7959

$$

HIBBERT

373 
WWUS51 KBUF 260157
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
957 PM EDT WED MAY 25 2011

NYC013-260206-
/O.EXP.KBUF.SV.W.0019.000000T0000Z-110526T0200Z/
CHAUTAUQUA NY-
957 PM EDT WED MAY 25 2011

...THE SEVERE THUNDERSTORM WARNING FOR CHAUTAUQUA COUNTY WILL EXPIRE
AT 1000 PM EDT...

AT 956 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 ALLOWED TO EXPIRE.

RADAR INDICATED THAT HEAVY RAIN AND GUSTY WINDS ARE STILL POSSIBLE 
FROM THE THUNDERSTORM AS IT MOVES TO THE NORTHEAST.

LAT...LON 4228 7974 4244 7943 4246 7943 4247 7939
      4250 7936 4256 7920 4223 7911 4199 7914
      4199 7976 4203 7977
TIME...MOT...LOC 0156Z 246DEG 43KT 4247 7924 4227 7918
          4204 7925

$$

HIBBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 8:28 PM EDT	Special Weather Statement	BUF	Chautauqua	62 min
May 25, 9:03 PM EDT	Special Marine Warning	BUF		57 min
May 25, 9:41 PM EDT	Areal Flood Advisory	BUF	Erie, Genesee, Niagara, Orleans, Wyoming	3 hr
May 25, 9:46 PM EDT	Special Marine Warning	BUF		44 min
May 25, 10:11 PM EDT	Areal Flood Advisory	BUF	Cattaraugus, Chautauqua	3 hr
May 25, 10:14 PM EDT	Special Marine Warning	BUF		31 min
May 26, 7:03 AM EDT	Special Weather Statement	BUF	Genesee, Monroe, Niagara, Orleans	57 min
May 26, 10:22 AM EDT	Severe Thunderstorm Warning	BUF	Jefferson	53 min
May 26, 2:56 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	64 min
May 26, 3:20 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	40 min
May 26, 3:37 PM EDT	Small Craft Advisory	BUF		19 hr
May 26, 5:30 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	60 min
May 26, 5:43 PM EDT	Tornado Warning	BUF	Chautauqua	32 min
May 26, 6:08 PM EDT	Tornado Warning	BUF	Cattaraugus, Chautauqua	38 min
May 26, 7:04 PM EDT	Special Weather Statement	BUF	Genesee, Monroe	56 min
May 26, 7:05 PM EDT	Areal Flood Advisory	BUF	Chautauqua	3 hr
May 26, 7:24 PM EDT	Special Marine Warning	BUF		51 min
May 26, 7:38 PM EDT	Special Marine Warning	BUF		54 min
May 26, 7:55 PM EDT	Special Weather Statement	BUF	Lewis	65 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.