Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 81, NWS Buffalo, NY

September 8, 20126 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 8, 2012, 11:20 AM EDT for 6 counties in New York. It was in force for 70 min. 12 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
Sep 8, 2012, 11:20 AM EDT (15:20 UTC)
Expired
Sep 8, 2012, 12:30 PM EDT
In force
70 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Cayuga County, NY, Livingston County, NY, Monroe County, NY, Ontario County, NY, Oswego County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 128 km from the middle of the area, began a volume at 15:22 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

TimeReportWhereRemark
Sep 8, 11:30 AM EDTTSTM WND DMGConesus, NYTREES AND WIRES DOWN.
Sep 8, 11:43 AM EDTTSTM WND DMGHopewell Center, NYTREE DOWN BLOCKING ROADWAY.
Sep 8, 11:54 AM EDTTSTM WND DMGNewark, NYMULTIPLE REPORTS OF TREES AND WIRES DOWN.
Sep 8, 11:54 AM EDTTSTM WND DMGSodus, NYMULTIPLE REPORTS OF TREES AND WIRES DOWN.
Sep 8, 12:13 PM EDTTSTM WND DMGWolcott, NYMULTIPLE REPORTS OF TREES AND WIRES DOWN.
Sep 8, 12:18 PM EDTTSTM WND DMGSavannah, NYMULTIPLE REPORTS OF TREES AND WIRES DOWN.
Sep 8, 12:20 PM EDTTSTM WND DMGRed Creek, NYMULTIPLE REPORTS OF TREES AND WIRES DOWN.
Sep 8, 12:22 PM EDTTSTM WND DMGFair Haven, NYTREES AND WIRES DOWN.
Sep 8, 12:27 PM EDTTSTM WND DMGCato, NYTREES AND WIRES DOWN.
Sep 8, 12:27 PM EDTTSTM WND DMGVictory, NYTREES AND WIRES DOWN.
Sep 8, 12:32 PM EDTTSTM WND DMGIra, NYTREES AND WIRES DOWN.
Sep 8, 12:40 PM EDTTSTM WND DMG1 Ene Granby Center, NYTREE TOOK WIRES DOWN.

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.

IssuedProductOfficeLasted
Sep 8, 10:03 AM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 3.3 hours before the alert went out and 265 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-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2012-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 113 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2012-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 294 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
113 J/kg
Mixed-layer CIN
-168 J/kg
Mixed-layer LCL
869 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
294 m²/s²
0-3 km storm-relative helicity
397 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

153 
WUUS51 KBUF 081520
SVRBUF
NYC011-051-055-069-075-117-081630-
/O.NEW.KBUF.SV.W.0081.120908T1520Z-120908T1630Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1120 AM EDT SAT SEP 8 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CAYUGA COUNTY IN CENTRAL NEW YORK
  SOUTHWESTERN OSWEGO COUNTY IN CENTRAL NEW YORK
  NORTHERN LIVINGSTON COUNTY IN WESTERN NEW YORK
  SOUTHEASTERN MONROE COUNTY IN WESTERN NEW YORK
  ONTARIO COUNTY IN WESTERN NEW YORK
  WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 1230 PM EDT

* AT 1117 AM EDT...THE PUBLIC REPORTED A LINE OF SEVERE THUNDERSTORMS
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 12 MILES NORTH OF
  WEBSTER TO 9 MILES SOUTHWEST OF CONESUS...AND MOVING EAST AT 40 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  CONESUS...
  ONTARIO...
  HONEOYE...
  WILLIAMSON...
  MARION...
  SODUS...
  NEWARK...
  PHELPS...
  GENEVA...
  OSWEGO...

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.

THESE STORMS HAVE A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE
ACROSS WESTERN NEW YORK. THIS IS AN EXTREMELY DANGEROUS
SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY
FROM WINDOWS!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM EDT
SATURDAY AFTERNOON FOR WESTERN NEW YORK.

&&

LAT...LON 4264 7792 4326 7750 4329 7737 4330 7709
      4328 7700 4330 7691 4337 7695 4330 7690
      4332 7679 4335 7670 4346 7656 4353 7642
      4354 7637 4303 7653 4301 7695 4276 7697
      4276 7731 4264 7737
TIME...MOT...LOC 1520Z 270DEG 35KT 4338 7734 4265 7780

$$

THOMAS
2 follow-up statements
295 
WWUS51 KBUF 081605
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1205 PM EDT SAT SEP 8 2012

NYC051-055-081613-
/O.CAN.KBUF.SV.W.0081.000000T0000Z-120908T1630Z/
LIVINGSTON NY-MONROE NY-
1205 PM EDT SAT SEP 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONROE AND
NORTHERN LIVINGSTON COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE EXITED THE 
AREA...THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4303 7716 4328 7705 4328 7694 4335 7671
      4346 7656 4353 7638 4303 7653 4301 7696
      4276 7697 4276 7731 4267 7736 4268 7736
TIME...MOT...LOC 1603Z 270DEG 35KT 4336 7676 4264 7724

$$

NYC011-069-075-117-081630-
/O.CON.KBUF.SV.W.0081.000000T0000Z-120908T1630Z/
ONTARIO NY-WAYNE NY-OSWEGO NY-CAYUGA NY-
1205 PM EDT SAT SEP 8 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT
FOR NORTHWESTERN CAYUGA...SOUTHWESTERN OSWEGO...EASTERN WAYNE AND
EASTERN ONTARIO COUNTIES...

AT 1159 AM EDT...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 PORT BAY TO 13 MILES SOUTH OF COTTAGE CITY...OR ALONG
A LINE EXTENDING FROM 17 MILES SOUTHWEST OF OSWEGO TO MIDDLESEX...
MOVING EAST AT 40 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  RED CREEK...
  OSWEGO...
  MINETTO...
  MERIDIAN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE. 
THIS IS AN EXTREMELY DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A 
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM EDT
SATURDAY AFTERNOON FOR WESTERN NEW YORK.

&&

LAT...LON 4303 7716 4328 7705 4328 7694 4335 7671
      4346 7656 4353 7638 4303 7653 4301 7696
      4276 7697 4276 7731 4267 7736 4268 7736
TIME...MOT...LOC 1603Z 270DEG 35KT 4336 7676 4264 7724

$$

JJR
780 
WWUS51 KBUF 081630
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1230 PM EDT SAT SEP 8 2012

NYC011-069-075-117-081638-
/O.EXP.KBUF.SV.W.0081.000000T0000Z-120908T1630Z/
ONTARIO NY-WAYNE NY-OSWEGO NY-CAYUGA NY-
1230 PM EDT SAT SEP 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CAYUGA...
SOUTHWESTERN OSWEGO...EASTERN WAYNE AND EASTERN ONTARIO COUNTIES WILL
EXPIRE AT 1230 PM EDT...

AT 1228 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 SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR PORTIONS OF 
CAYUGA AND OSWEGO COUNTIES.  

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM EDT
SATURDAY AFTERNOON FOR WESTERN NEW YORK.

LAT...LON 4303 7716 4328 7705 4328 7694 4335 7671
      4346 7656 4353 7638 4303 7653 4301 7696
      4276 7697 4276 7731 4267 7736 4268 7736
TIME...MOT...LOC 1628Z 273DEG 34KT 4348 7659 4293 7660

$$

THOMAS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 8:45 AM EDTSpecial Weather StatementBUFCattaraugus, Chautauqua, Erie, Niagara, Orleans90 min
Sep 8, 8:59 AM EDTSpecial Marine WarningBUF64 min
Sep 8, 9:10 AM EDTSpecial Marine WarningBUF95 min
Sep 8, 9:12 AM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua, Erie, Niagara63 min
Sep 8, 9:51 AM EDTSevere Thunderstorm WarningBUFGenesee, Monroe, Orleans, Wyoming54 min
Sep 8, 10:05 AM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Erie, Livingston, Wyoming55 min
Sep 8, 10:33 AM EDTSevere Thunderstorm WarningBUFGenesee, Livingston, Monroe, Ontario, Orleans, Wayne and 1 more57 min
Sep 8, 10:40 AM EDTSpecial Marine WarningBUF65 min
Sep 8, 10:55 AM EDTSevere Thunderstorm WarningBUFAllegany, Livingston, Ontario, Wyoming80 min
Sep 8, 11:49 AM EDTSpecial Marine WarningBUF86 min
Sep 8, 12:09 PM EDTSevere Thunderstorm WarningBUFCayuga, Jefferson, Oswego66 min
Sep 8, 12:47 PM EDTSpecial Marine WarningBUF118 min
Sep 8, 1:05 PM EDTSevere Thunderstorm WarningBUFJefferson, Lewis, Oswego55 min
Sep 8, 1:47 PM EDTSevere Thunderstorm WarningBUFJefferson, Lewis58 min
Sep 8, 4:10 PM EDTSpecial Weather StatementBUFErie50 min
Sep 8, 5:15 PM EDTSpecial Marine WarningBUF50 min
Sep 8, 5:31 PM EDTSpecial Marine WarningBUF44 min

Nearby

Severe Thunderstorm Warnings in New York, 2012Every severe thunderstorm warning in 2012

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.