Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 110, NWS Buffalo, NY

November 17, 20136 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Nov 17, 2013, 9:59 PM EST for 6 counties in New York. It was in force for 76 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 17, 2013, 9:59 PM EST (02:59 UTC)
Expired: Nov 17, 2013, 11:15 PM EST
In force: 76 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Erie County, NY, Genesee County, NY, Monroe County, NY, Niagara County, NY, Orleans County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 47 km from the middle of the area, began a volume at 02:59 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 17, 10:29 PM EST	TSTM WND DMG	2 S Porterville, NY	TREES AND WIRES DOWN ON ROUTE 78 NEAR TWO ROD ROAD.

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.

Issued	Product	Office	Lasted
Nov 17, 8:23 PM EST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 3.0 hours before the alert went out and 45 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 940 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 325 m²/s²
0-3 km storm-relative helicity: 351 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.

774 
WUUS51 KBUF 180259
SVRBUF
NYC029-037-055-063-073-121-180415-
/O.NEW.KBUF.SV.W.0110.131118T0259Z-131118T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
959 PM EST SUN NOV 17 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ERIE COUNTY IN WESTERN NEW YORK
  GENESEE COUNTY IN WESTERN NEW YORK
  NORTHWESTERN MONROE COUNTY IN WESTERN NEW YORK
  EASTERN NIAGARA COUNTY IN WESTERN NEW YORK
  ORLEANS COUNTY IN WESTERN NEW YORK
  WYOMING COUNTY IN WESTERN NEW YORK

* UNTIL 1115 PM EST

* AT 954 PM EST...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 10 MILES NORTH OF NIAGARA FALLS TO 10 MILES EAST OF 
  DUNKIRK...MOVING NORTHEAST AT 55 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  AKRON...
  WALES CENTER...
  JAVA CENTER...
  WATERPORT...
  POINT BREEZE...
  WARSAW...
  KENDALL...
  PAVILION...
  LE ROY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING DAMAGING WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EST MONDAY
MORNING FOR WESTERN NEW YORK.

&&

LAT...LON 4260 7858 4338 7854 4338 7807 4338 7797
      4336 7788 4335 7787 4259 7803
TIME...MOT...LOC 0258Z 242DEG 49KT 4325 7897 4289 7896
          4255 7908

$$

RSH

2 follow-up statements

270 
WWUS51 KBUF 180335
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1035 PM EST SUN NOV 17 2013

NYC029-037-055-063-073-121-180415-
/O.CON.KBUF.SV.W.0110.000000T0000Z-131118T0415Z/
GENESEE NY-WYOMING NY-NIAGARA NY-ORLEANS NY-MONROE NY-ERIE NY-
1035 PM EST SUN NOV 17 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EST
FOR NORTHEASTERN ERIE...NORTHWESTERN MONROE...ORLEANS...EASTERN
NIAGARA...WYOMING AND GENESEE COUNTIES...

THIS ALSO INCLUDES THE NEW YORK THRUWAY BETWEEN EXITS 47 AND 48.

AT 1031 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM THIRTY MILE POINT TO CORFU TO HOLLAND...MOVING 
EAST AT 55 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  JAVA CENTER...
  WATERPORT...
  GAINESVILLE...
  STAFFORD...
  PAVILION...
  HAMLIN BEACH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EST MONDAY
MORNING FOR WESTERN NEW YORK.

&&

LAT...LON 4260 7858 4338 7854 4338 7807 4338 7797
      4336 7788 4335 7787 4259 7803
TIME...MOT...LOC 0334Z 242DEG 49KT 4338 7841 4297 7840
          4267 7850

$$

TJP

797 
WWUS51 KBUF 180414
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1114 PM EST SUN NOV 17 2013

NYC029-037-055-063-073-121-180424-
/O.EXP.KBUF.SV.W.0110.000000T0000Z-131118T0415Z/
GENESEE NY-WYOMING NY-NIAGARA NY-ORLEANS NY-MONROE NY-ERIE NY-
1114 PM EST SUN NOV 17 2013

THIS ALSO INCLUDES THE NEW YORK THRUWAY BETWEEN EXITS 47 AND 48.

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ERIE...
NORTHWESTERN MONROE...ORLEANS...EASTERN NIAGARA...WYOMING AND GENESEE
COUNTIES WILL EXPIRE AT 1115 PM EST...

AT 1114 PM EST 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EST MONDAY
MORNING FOR WESTERN NEW YORK.

LAT...LON 4260 7858 4338 7854 4338 7807 4338 7797
      4336 7788 4335 7787 4259 7803
TIME...MOT...LOC 0414Z 242DEG 49KT 4363 7774 4322 7774
          4292 7784

$$

TJP

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 17, 8:15 PM EST	Special Marine Warning	BUF		2 hr
Nov 17, 8:46 PM EST	Severe Thunderstorm Warning	BUF	Chautauqua	74 min
Nov 17, 9:15 PM EST	Severe Thunderstorm Warning	BUF	Erie, Niagara	75 min
Nov 17, 9:27 PM EST	Special Marine Warning	BUF		63 min
Nov 17, 9:27 PM EST	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	78 min
Nov 17, 10:43 PM EST	Special Marine Warning	BUF		62 min
Nov 17, 11:07 PM EST	Special Weather Statement	BUF	Livingston, Monroe, Ontario, Wayne	68 min
Nov 17, 11:54 PM EST	Special Weather Statement	BUF	Ontario, Oswego, Wayne	51 min
Nov 18, 1:15 AM EST	Special Weather Statement	BUF	Jefferson, Lewis, Oswego	60 min
Nov 18, 9:41 AM EST	Wind Advisory	BUF	Cayuga, Chautauqua, Erie, Genesee, Jefferson, Lewis and 5 more	6 hr
Nov 18, 4:00 PM EST	Small Craft Advisory	BUF		30 hr

Nearby

Severe Thunderstorm Warnings in New York, 2013 Every severe thunderstorm warning in 2013

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.