Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 7, NWS Buffalo, NY

January 17, 20124 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jan 17, 2012, 6:45 PM EST for 4 counties in New York. It was in force for 45 min. 4 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: Jan 17, 2012, 6:45 PM EST (23:45 UTC)
Expired: Jan 17, 2012, 7:30 PM EST
In force: 45 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

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

The radar

The Buffalo radar (KBUF), 85 km from the middle of the area, began a volume at 23:47 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
Jan 17, 6:47 PM EST	TSTM WND DMG	Salamanca, NY	TREES AND POWERLINES DOWN
Jan 17, 7:05 PM EST	TSTM WND DMG	Rushford, NY	TREES DOWN
Jan 17, 7:09 PM EST	TSTM WND DMG	Hume, NY	TREES DOWN
Jan 17, 7:25 PM EST	TSTM WND DMG	Wirt, NY	TREES 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 12:00Z, 11.8 hours before the alert went out and 81 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: 479 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 218 m²/s²
0-3 km storm-relative helicity: 321 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.

216 
WUUS51 KBUF 172345
SVRBUF
NYC003-009-051-121-180030-
/O.NEW.KBUF.SV.W.0007.120117T2345Z-120118T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
645 PM EST TUE JAN 17 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 730 PM EST

* AT 643 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 BLISS TO 14 MILES SOUTHWEST OF ALLEGANY PARK...OR ALONG A LINE
  EXTENDING FROM 20 MILES SOUTHEAST OF EAST AURORA TO 16 MILES WEST
  OF BRADFORD...AND MOVING EAST AT 70 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  RUSHFORD...
  BELFAST...
  DANSVILLE...
  WELLSVILLE...
  ALFRED...
  WHITESVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

WIND DAMAGE WITH THESE STORMS WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4200 7894 4262 7837 4260 7763 4254 7765
      4253 7771 4199 7775
TIME...MOT...LOC 2345Z 262DEG 72KT 4261 7824 4192 7889

$$

WOOD

2 follow-up statements

659 
WWUS51 KBUF 180018
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
718 PM EST TUE JAN 17 2012

NYC003-009-051-121-180030-
/O.CON.KBUF.SV.W.0007.000000T0000Z-120118T0030Z/
ALLEGANY NY-CATTARAUGUS NY-LIVINGSTON NY-WYOMING NY-
718 PM EST TUE JAN 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EST
FOR SOUTH CENTRAL WYOMING...SOUTHERN LIVINGSTON...SOUTHEASTERN
CATTARAUGUS AND ALLEGANY COUNTIES...

AT 713 PM EST...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED.  THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NUNDA TO 7 MILES
SOUTH OF ST. BONAVENTURE...OR ALONG A LINE EXTENDING FROM 13 MILES
WEST OF DANSVILLE TO 8 MILES SOUTH OF OLEAN...MOVING EAST AT 70 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  HOUGHTON...
  ANGELICA...
  WELLSVILLE...

LAT...LON 4200 7869 4261 7820 4260 7763 4254 7765
      4253 7771 4199 7775
TIME...MOT...LOC 0017Z 262DEG 72KT 4261 7784 4199 7837

$$

WOOD

046 
WWUS51 KBUF 180032
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
732 PM EST TUE JAN 17 2012

NYC003-009-051-121-180042-
/O.EXP.KBUF.SV.W.0007.000000T0000Z-120118T0030Z/
ALLEGANY NY-CATTARAUGUS NY-LIVINGSTON NY-WYOMING NY-
732 PM EST TUE JAN 17 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL WYOMING...
SOUTHERN LIVINGSTON...SOUTHEASTERN CATTARAUGUS AND ALLEGANY COUNTIES
HAS EXPIRED...

AT 732 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.

LAT...LON 4200 7869 4261 7820 4260 7763 4254 7765
      4253 7771 4199 7775
TIME...MOT...LOC 0018Z 262DEG 72KT 4257 7780 4196 7834

$$

WOOD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 17, 4:02 AM EST	Lake Effect Snow Watch	BUF	Cattaraugus, Chautauqua, Erie, Lewis, Oswego, Wyoming	11 hr
Jan 17, 4:05 AM EST	Gale Warning	BUF		30 hr
Jan 17, 4:05 AM EST	Small Craft Advisory	BUF		6 hr
Jan 17, 4:15 AM EST	Wind Advisory	BUF	Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more	6 hr
Jan 17, 9:57 AM EST	High Wind Warning	BUF	Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more	16 hr
Jan 17, 3:06 PM EST	Lake Effect Snow Advisory	BUF	Cattaraugus, Cayuga, Chautauqua, Erie, Lewis, Oswego and 2 more	19 hr
Jan 17, 5:04 PM EST	Special Marine Warning	BUF		41 min
Jan 17, 5:08 PM EST	Severe Thunderstorm Warning	BUF	Chautauqua	37 min
Jan 17, 5:24 PM EST	Special Marine Warning	BUF		51 min
Jan 17, 5:36 PM EST	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie, Wyoming	39 min
Jan 17, 5:42 PM EST	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans, Wyoming	33 min
Jan 17, 6:11 PM EST	Severe Thunderstorm Warning	BUF	Erie, Genesee, Livingston, Monroe, Niagara, Orleans and 1 more	34 min
Jan 17, 6:15 PM EST	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Wyoming	30 min
Jan 17, 6:43 PM EST	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario, Wyoming	47 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.