Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 104, NWS Buffalo, NY

November 14, 2011Allegany County, Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Nov 14, 2011, 5:59 PM EST for Allegany County, Cattaraugus County, Chautauqua County, New York. It was in force for 61 min. 1 report 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: Nov 14, 2011, 5:59 PM EST (22:59 UTC)
Expired: Nov 14, 2011, 7:00 PM EST
In force: 61 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Allegany County, NY, Cattaraugus County, NY, Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 85 km from the middle of the area, began a volume at 22:59 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
Nov 14, 6:08 PM EST	TSTM WND DMG	Little Valley, NY	ROOF BLOWN OFF HOME

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, 11.0 hours before the alert went out and 83 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: 19 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1036 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 294 m²/s²
0-3 km storm-relative helicity: 289 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.

178 
WUUS51 KBUF 142259
SVRBUF
NYC003-009-013-150000-
/O.NEW.KBUF.SV.W.0104.111114T2259Z-111115T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
559 PM EST MON NOV 14 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 700 PM EST

* AT 554 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
  IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM ASHFORD HOLLOW TO 5 MILES SOUTHWEST OF FREWSBURG...
  OR ALONG A LINE EXTENDING FROM 15 MILES NORTH OF SALAMANCA TO 5
  MILES SOUTH OF JAMESTOWN...AND MOVING EAST AT 50 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  ASHFORD...
  SALAMANCA...
  ALLEGANY PARK...
  RUSHFORD...
  HOUGHTON...
  HINSDALE...
  OLEAN...
  WESTON MILLS...

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 4200 7932 4239 7882 4251 7813 4200 7814
TIME...MOT...LOC 2259Z 268DEG 45KT 4238 7866 4202 7916

$$

HITCHCOCK

2 follow-up statements

831 
WWUS51 KBUF 142330
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
630 PM EST MON NOV 14 2011

NYC003-009-013-150000-
/O.CON.KBUF.SV.W.0104.000000T0000Z-111115T0000Z/
ALLEGANY NY-CATTARAUGUS NY-CHAUTAUQUA NY-
630 PM EST MON NOV 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EST
FOR SOUTHEASTERN CHAUTAUQUA...CATTARAUGUS AND WESTERN ALLEGANY
COUNTIES...

AT 626 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED 
ALONG A LINE EXTENDING FROM RUSHFORD TO LIMESTONE...MOVING EAST AT 
50 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  HINSDALE...
  OLEAN...
  WESTON MILLS...
  PORTVILLE...
  RICHBURG...

ANOTHER LINE OF STORMS IS FOLLOWING THE FIRST LINE OF STORMS...WITH 
POSSIBLE SEVERE WEATHER AFFECTING FREWSBURG AND RANDOLPH.

LAT...LON 4200 7919 4212 7917 4214 7915 4237 7878
      4251 7813 4200 7814
TIME...MOT...LOC 2328Z 268DEG 45KT 4239 7817 4203 7867

$$

ZAFF

305 
WWUS51 KBUF 142359
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
659 PM EST MON NOV 14 2011

NYC003-009-013-150007-
/O.EXP.KBUF.SV.W.0104.000000T0000Z-111115T0000Z/
ALLEGANY NY-CATTARAUGUS NY-CHAUTAUQUA NY-
659 PM EST MON NOV 14 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHAUTAUQUA...
CATTARAUGUS AND WESTERN ALLEGANY COUNTIES WILL EXPIRE AT 700 PM
EST...

THE SEVERE WEATHER THREAT HAS DIMINISHED FOR CHAUTAUQUA COUNTY.  
HOWEVER THERE IS STILL A LINE OF SEVERE THUNDERSTORMS MOVING EAST 
ACROSS SOUTHERN CATTARAUGUS AND ALLEGANY COUNTIES.  A NEW WARNING 
HAS BEEN ISSUED FOR THOSE LOCATIONS.  IN ADDITION...A TORNADO 
WARNING IS STILL IN EFFECT FOR THE SOUTHWESTERN PORTION OF 
CATTARAUGUS COUNTY.  PLEASE REFER TO THE LATEST SEVERE WEATHER 
WARNING AND STATEMENT FOR THE LATEST INFORMATION.

LAT...LON 4200 7919 4212 7917 4214 7915 4237 7878
      4251 7813 4200 7814
TIME...MOT...LOC 2357Z 268DEG 45KT 4240 7768 4204 7818

$$

ZAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 14, 4:17 PM EST	Special Marine Warning	BUF		88 min
Nov 14, 4:41 PM EST	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	64 min
Nov 14, 4:47 PM EST	Tornado Warning	BUF	Cattaraugus, Chautauqua, Erie	43 min
Nov 14, 4:54 PM EST	Tornado Warning	BUF	Chautauqua	36 min
Nov 14, 5:27 PM EST	Severe Thunderstorm Warning	BUF	Cattaraugus, Erie, Wyoming	36 min
Nov 14, 5:30 PM EST	Tornado Warning	BUF	Cattaraugus, Chautauqua	30 min
Nov 14, 5:46 PM EST	Severe Thunderstorm Warning	BUF	Chautauqua	59 min
Nov 14, 6:06 PM EST	Tornado Warning	BUF	Cattaraugus	24 min
Nov 14, 6:38 PM EST	Tornado Warning	BUF	Cattaraugus, Chautauqua	37 min
Nov 14, 6:40 PM EST	Severe Thunderstorm Warning	BUF	Allegany, Livingston, Ontario	20 min
Nov 14, 6:57 PM EST	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.