Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 75, NWS Buffalo, NY

August 13, 2011Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 13, 2011, 8:10 PM EDT for Wayne County, New York. It was in force for 65 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: Aug 13, 2011, 8:10 PM EDT (00:10 UTC)
Expired: Aug 13, 2011, 9:15 PM EDT
In force: 65 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Wayne County, NY

The radar

The Ft Drum radar (KTYX), 131 km from the middle of the area, began a volume at 00:09 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
Aug 13, 8:25 PM EDT	TSTM WND DMG	Marion, NY	TREES AND POWERLINES DOWN

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, 0.2 hours before the alert went out and 133 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: 43 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 1765 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 52 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.

301 
WUUS51 KBUF 140010
SVRBUF
NYC117-140115-
/O.NEW.KBUF.SV.W.0075.110814T0010Z-110814T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
810 PM EDT SAT AUG 13 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 915 PM EDT

* AT 807 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 WILLIAMSON TO             
  PALMYRA...AND MOVING EAST AT 15 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  WILLIAMSON...
  MARION...
  SODUS...
  NEWARK...
  LYONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4304 7714 4304 7737 4305 7737 4329 7721
      4330 7708 4328 7704 4328 7695 4330 7691
      4330 7685 4303 7700
TIME...MOT...LOC 0010Z 269DEG 14KT 4326 7721 4308 7728

$$

HITCHCOCK

2 follow-up statements

722 
WWUS51 KBUF 140038
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
838 PM EDT SAT AUG 13 2011

NYC117-140115-
/O.CON.KBUF.SV.W.0075.000000T0000Z-110814T0115Z/
WAYNE NY-
838 PM EDT SAT AUG 13 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR WESTERN WAYNE COUNTY...

AT 834 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED NEAR MARION...MOVING EAST AT 15 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  MACEDON...
  PALMYRA...
  LYONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE ACROSS PORTIONS OF 
WESTERN WAYNE COUNTY. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND 
STAY AWAY FROM WINDOWS!

&&

LAT...LON 4320 7719 4323 7689 4303 7700 4304 7714
      4304 7737 4305 7737
TIME...MOT...LOC 0037Z 269DEG 14KT 4312 7712

$$

HITCHCOCK

224 
WWUS51 KBUF 140109
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
909 PM EDT SAT AUG 13 2011

NYC117-140118-
/O.EXP.KBUF.SV.W.0075.000000T0000Z-110814T0115Z/
WAYNE NY-
909 PM EDT SAT AUG 13 2011

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN WAYNE COUNTY WILL
EXPIRE AT 915 PM EDT...

AT 908 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 SEPERATE SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR 
EXTREME SOUTHERN WAYNE COUNTY UNTIL 930 PM.

LAT...LON 4320 7719 4323 7689 4303 7700 4304 7714
      4304 7737 4305 7737
TIME...MOT...LOC 0108Z 269DEG 14KT 4312 7695

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 8:35 PM EDT	Severe Thunderstorm Warning	BUF	Ontario, Wayne	55 min
Aug 13, 9:16 PM EDT	Special Weather Statement	BUF	Ontario	59 min
Aug 13, 9:56 PM EDT	Flash Flood Warning	BUF	Ontario	3 hr
Aug 13, 11:06 PM EDT	Areal Flood Advisory	BUF	Livingston	118 min
Aug 13, 11:43 PM EDT	Flash Flood Warning	BUF	Livingston	75 min
Aug 14, 9:00 AM EDT	Special Weather Statement	BUF	Erie	60 min
Aug 14, 9:28 AM EDT	Special Weather Statement	BUF	Erie	47 min
Aug 14, 10:12 AM EDT	Areal Flood Advisory	BUF	Allegany, Cattaraugus, Erie, Wyoming	3 hr
Aug 14, 10:12 AM EDT	Special Weather Statement	BUF	Erie, Wyoming	48 min
Aug 14, 10:59 AM EDT	Flash Flood Warning	BUF	Allegany, Cattaraugus, Livingston, Wyoming	3 hr
Aug 14, 11:10 AM EDT	Special Weather Statement	BUF	Erie	50 min
Aug 14, 1:54 PM EDT	Flash Flood Warning	BUF	Livingston, Ontario	3 hr
Aug 14, 2:33 PM EDT	Special Weather Statement	BUF	Monroe	57 min
Aug 14, 2:40 PM EDT	Flash Flood Warning	BUF	Livingston, Monroe, Ontario, Wayne	5 hr
Aug 14, 5:53 PM EDT	Areal Flood Advisory	BUF	Jefferson, Lewis, Oswego	3 hr

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.