Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 78, NWS Buffalo, NY

September 8, 20125 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 8, 2012, 10:05 AM EDT for 5 counties in New York. It was in force for 55 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: Sep 8, 2012, 10:05 AM EDT (14:05 UTC)
Expired: Sep 8, 2012, 11:00 AM EDT
In force: 55 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Allegany County, NY, Cattaraugus County, NY, Erie County, NY, Livingston County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 80 km from the middle of the area, began a volume at 14:08 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
Sep 8, 10:50 AM EDT	TSTM WND DMG	Bliss, NY	LARGE TREE DOWN.
Sep 8, 10:59 AM EDT	TSTM WND DMG	Cuba, NY	TREES 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.

Issued	Product	Office	Lasted
Sep 8, 10:03 AM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 2.1 hours before the alert went out and 276 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: 76 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 700 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

342 
WUUS51 KBUF 081405
SVRBUF
NYC003-009-029-051-121-081500-
/O.NEW.KBUF.SV.W.0078.120908T1405Z-120908T1500Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1005 AM EDT SAT SEP 8 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ALLEGANY COUNTY IN WESTERN NEW YORK
  CATTARAUGUS COUNTY IN WESTERN NEW YORK
  SOUTHEASTERN ERIE COUNTY IN WESTERN NEW YORK
  SOUTHERN LIVINGSTON COUNTY IN WESTERN NEW YORK
  SOUTHERN WYOMING COUNTY IN WESTERN NEW YORK

* UNTIL 1100 AM EDT

* AT 1003 AM EDT...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 7 MILES WEST OF SPRINGVILLE TO 7 MILES SOUTHWEST OF ALLEGANY
  PARK...AND MOVING EAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  ALLEGANY PARK...
  SPRINGVILLE...
  EAST CONCORD...
  ASHFORD...
  SARDINIA...
  CHAFFEE...
  ST. BONAVENTURE...
  OLEAN...
  HINSDALE...
  BLISS...

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.

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

&&

LAT...LON 4200 7901 4245 7889 4263 7848 4266 7751
      4257 7751 4257 7765 4253 7767 4253 7771
      4199 7775
TIME...MOT...LOC 1404Z 264DEG 28KT 4254 7879 4200 7889

$$

THOMAS

2 follow-up statements

760 
WWUS51 KBUF 081438
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1038 AM EDT SAT SEP 8 2012

NYC029-081446-
/O.CAN.KBUF.SV.W.0078.000000T0000Z-120908T1500Z/
ERIE NY-
1038 AM EDT SAT SEP 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ERIE COUNTY IS
CANCELLED...

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

LAT...LON 4201 7863 4242 7851 4253 7846 4263 7846
      4266 7751 4257 7751 4257 7765 4253 7767
      4253 7771 4199 7775
TIME...MOT...LOC 1436Z 264DEG 28KT 4257 7845 4203 7855

$$

NYC003-009-051-121-081500-
/O.CON.KBUF.SV.W.0078.000000T0000Z-120908T1500Z/
ALLEGANY NY-CATTARAUGUS NY-LIVINGSTON NY-WYOMING NY-
1038 AM EDT SAT SEP 8 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 AM EDT
FOR SOUTHERN WYOMING...SOUTHERN LIVINGSTON...EASTERN CATTARAUGUS AND
ALLEGANY COUNTIES...

AT 1031 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 ARCADE TO BRADFORD...MOVING EAST AT 30 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  ISCHUA...
  HINSDALE...
  RUSHFORD...
  PIKE...

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 DAMAGING WINDS. 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 PORTIONS OF WESTERN NEW YORK.

&&

LAT...LON 4201 7863 4242 7851 4253 7846 4263 7846
      4266 7751 4257 7751 4257 7765 4253 7767
      4253 7771 4199 7775
TIME...MOT...LOC 1436Z 264DEG 28KT 4257 7845 4203 7855

$$

JJR

665 
WWUS51 KBUF 081504
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1104 AM EDT SAT SEP 8 2012

NYC003-009-051-121-081512-
/O.EXP.KBUF.SV.W.0078.000000T0000Z-120908T1500Z/
ALLEGANY NY-CATTARAUGUS NY-LIVINGSTON NY-WYOMING NY-
1104 AM EDT SAT SEP 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN WYOMING...SOUTHERN
LIVINGSTON...EASTERN CATTARAUGUS AND ALLEGANY COUNTIES HAS EXPIRED...

AT 1102 AM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED CATTARAUGUS COUNTY.

A SEPARATE SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR PORTIONS OF 
EASTERN WYOMING...ALLEGANY AND LIVINGSTON COUNTIES. 

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

LAT...LON 4201 7863 4242 7851 4253 7846 4263 7846
      4266 7751 4257 7751 4257 7765 4253 7767
      4253 7771 4199 7775
TIME...MOT...LOC 1438Z 264DEG 28KT 4257 7843 4203 7853

$$

THOMAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 8, 8:45 AM EDT	Special Weather Statement	BUF	Cattaraugus, Chautauqua, Erie, Niagara, Orleans	90 min
Sep 8, 8:59 AM EDT	Special Marine Warning	BUF		64 min
Sep 8, 9:10 AM EDT	Special Marine Warning	BUF		95 min
Sep 8, 9:12 AM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie, Niagara	63 min
Sep 8, 9:51 AM EDT	Severe Thunderstorm Warning	BUF	Genesee, Monroe, Orleans, Wyoming	54 min
Sep 8, 10:33 AM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario, Orleans, Wayne and 1 more	57 min
Sep 8, 10:40 AM EDT	Special Marine Warning	BUF		65 min
Sep 8, 10:55 AM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston, Ontario, Wyoming	80 min
Sep 8, 11:20 AM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Livingston, Monroe, Ontario, Oswego, Wayne	70 min
Sep 8, 11:49 AM EDT	Special Marine Warning	BUF		86 min
Sep 8, 12:09 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Jefferson, Oswego	66 min
Sep 8, 12:47 PM EDT	Special Marine Warning	BUF		118 min
Sep 8, 1:05 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	55 min
Sep 8, 1:47 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	58 min
Sep 8, 4:10 PM EDT	Special Weather Statement	BUF	Erie	50 min
Sep 8, 5:15 PM EDT	Special Marine Warning	BUF		50 min
Sep 8, 5:31 PM EDT	Special Marine Warning	BUF		44 min

Nearby

Severe Thunderstorm Warnings in New York, 2012 Every 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.