Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 46, NWS Buffalo, NY

July 31, 2012Cayuga County, Oswego County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 31, 2012, 5:31 PM EDT for Cayuga County, Oswego County, Wayne County, New York. It was in force for 59 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: Jul 31, 2012, 5:31 PM EDT (21:31 UTC)
Expired: Jul 31, 2012, 6:30 PM EDT
In force: 59 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Cayuga County, NY, Oswego County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 101 km from the middle of the area, began a volume at 21:35 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
Jul 31, 5:35 PM EDT	TSTM WND DMG	5 Nw Savannah, NY	TREES DOWN
Jul 31, 5:38 PM EDT	TSTM WND DMG	Savannah, NY	POWER POLE DOWN
Jul 31, 5:39 PM EDT	TSTM WND DMG	Savannah, NY	REPORTED MULTIPLE TREES DOWN.
Jul 31, 6:15 PM EDT	TSTM WND DMG	Oswego, 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

Albany, NY (KALY), launched 12:00Z, 9.5 hours before the alert went out and 246 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: -115 J/kg
Mixed-layer LCL: 710 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 69 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.

148 
WUUS51 KBUF 312131
SVRBUF
NYC011-075-117-312230-
/O.NEW.KBUF.SV.W.0046.120731T2131Z-120731T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
531 PM EDT TUE JUL 31 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
  EASTERN WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 630 PM EDT

* AT 527 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 5 MILES NORTHEAST OF SODUS TO 8
  MILES SOUTHEAST OF CLYDE...AND MOVING NORTHEAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  WEEDSPORT...
  WOLCOTT...
  NORTH ROSE...
  ROSE...
  CATO...
  VICTORY...
  FAIR HAVEN...
  HANNIBAL...
  OSWEGO...

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 4345 7642 4304 7649 4301 7683 4328 7719
      4330 7709 4328 7700 4330 7690 4337 7696
      4330 7690 4332 7679 4335 7673 4335 7670
      4343 7663 4351 7646
TIME...MOT...LOC 2131Z 214DEG 30KT 4330 7696 4304 7673

$$

HITCHCOCK

3 follow-up statements

995 
WWUS51 KBUF 312151
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
551 PM EDT TUE JUL 31 2012

NYC011-075-117-312230-
/O.CON.KBUF.SV.W.0046.000000T0000Z-120731T2230Z/
WAYNE NY-OSWEGO NY-CAYUGA NY-
551 PM EDT TUE JUL 31 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTHWESTERN CAYUGA...SOUTHWESTERN OSWEGO AND EASTERN WAYNE
COUNTIES...

AT 549 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE 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 6 MILES NORTHWEST OF FAIR 
HAVEN TO MERIDIAN...MOVING NORTHEAST AT 35 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  IRA...
  CATO...
  FAIR HAVEN...
  HANNIBAL...
  OSWEGO...
  SCRIBA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING WIND DAMAGE IN SAVANNA. 
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS!

&&

LAT...LON 4345 7642 4304 7649 4302 7676 4329 7695
      4330 7690 4332 7679 4335 7673 4335 7670
      4343 7663 4351 7646
TIME...MOT...LOC 2150Z 231DEG 33KT 4341 7676 4314 7653

$$

HITCHCOCK

076 
WWUS51 KBUF 312213
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
613 PM EDT TUE JUL 31 2012

NYC117-312223-
/O.CAN.KBUF.SV.W.0046.000000T0000Z-120731T2230Z/
WAYNE NY-
613 PM EDT TUE JUL 31 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WAYNE COUNTY IS
CANCELLED...

SEVERE THUNDERSTORMS HAVE MOVED EAST OF THE COUNTY...THEREFORE THE 
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 4345 7642 4317 7648 4318 7661 4340 7660
      4343 7663 4351 7646
TIME...MOT...LOC 2213Z 231DEG 33KT 4344 7652 4330 7649
          4325 7646

$$

NYC011-075-312230-
/O.CON.KBUF.SV.W.0046.000000T0000Z-120731T2230Z/
OSWEGO NY-CAYUGA NY-
613 PM EDT TUE JUL 31 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTH CENTRAL CAYUGA AND SOUTHWESTERN OSWEGO COUNTIES...

AT 610 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60
MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM OSWEGO TO
HANNIBAL TO IRA...MOVING NORTHEAST AT 40 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  HANNIBAL...
  OSWEGO...
  SCRIBA...

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 4345 7642 4317 7648 4318 7661 4340 7660
      4343 7663 4351 7646
TIME...MOT...LOC 2213Z 231DEG 33KT 4344 7652 4330 7649
          4325 7646

$$

HITCHCOCK

699 
WWUS51 KBUF 312238
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
638 PM EDT TUE JUL 31 2012

NYC011-075-312248-
/O.EXP.KBUF.SV.W.0046.000000T0000Z-120731T2230Z/
OSWEGO NY-CAYUGA NY-
638 PM EDT TUE JUL 31 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CAYUGA AND
SOUTHWESTERN OSWEGO COUNTIES HAS EXPIRED...

AT 638 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 SEPARATE SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
PORTIONS OF NORTHERN OSWEGO COUNTY.

LAT...LON 4345 7642 4317 7648 4318 7661 4340 7660
      4343 7663 4351 7646
TIME...MOT...LOC 2213Z 231DEG 33KT 4344 7652 4330 7649
          4325 7646

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 4:28 PM EDT	Severe Thunderstorm Warning	BUF	Livingston	32 min
Jul 31, 4:50 PM EDT	Areal Flood Advisory	BUF	Genesee, Livingston, Monroe, Wyoming	3 hr
Jul 31, 5:05 PM EDT	Special Weather Statement	BUF	Allegany	55 min
Jul 31, 5:13 PM EDT	Special Marine Warning	BUF		2 hr
Jul 31, 5:22 PM EDT	Flash Flood Warning	BUF	Genesee, Livingston, Monroe	3 hr
Jul 31, 5:38 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	52 min
Jul 31, 6:03 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	57 min
Jul 31, 6:09 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	17 min
Jul 31, 6:10 PM EDT	Special Marine Warning	BUF		88 min
Jul 31, 6:29 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Oswego	61 min
Jul 31, 6:48 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	72 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.