Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 64, NWS Buffalo, NY

August 5, 2012Jefferson County, Lewis County, Oswego County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 5, 2012, 3:42 PM EDT for Jefferson County, Lewis County, Oswego County, New York. It was in force for 63 min. 3 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: Aug 5, 2012, 3:42 PM EDT (19:42 UTC)
Expired: Aug 5, 2012, 4:45 PM EDT
In force: 63 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Jefferson County, NY, Lewis County, NY, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 37 km from the middle of the area, began a volume at 19:45 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 5, 4:00 PM EDT	TSTM WND DMG	Ellisburg, NY	TREES AND WIRES DOWN
Aug 5, 4:08 PM EDT	TSTM WND DMG	Adams, NY	TREE AND WIRES DOWN
Aug 5, 4:54 PM EDT	TSTM WND DMG	Martinsburg, NY	TREES AND 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.

Issued	Product	Office	Lasted
Aug 5, 12:42 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 7.7 hours before the alert went out and 226 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: 520 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 694 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

410 
WUUS51 KBUF 051942
SVRBUF
NYC045-049-075-052045-
/O.NEW.KBUF.SV.W.0064.120805T1942Z-120805T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
342 PM EDT SUN AUG 5 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JEFFERSON COUNTY IN CENTRAL NEW YORK
  WESTERN LEWIS COUNTY IN CENTRAL NEW YORK
  EXTREME NORTHERN OSWEGO COUNTY IN CENTRAL NEW YORK

* UNTIL 445 PM EDT

* AT 335 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
  IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE       
  EXTENDING FROM 22 MILES NORTH OF OSWEGO TO FULTON...AND MOVING     
  NORTHEAST AT 55 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  SOUTHWICK BEACH...
  ADAMS CENTER...
  WATERTOWN...
  BARNES CORNERS...
  WEST CARTHAGE...
  HIGHMARKET...
  LOWVILLE...

* THE STRONGEST STORMS WILL BE AFFECTING SOUTHERN PORTIONS OF        
  JEFFERSON AND AND SOUTHWEST LEWIS COUNTIES. 

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 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4428 7580 4353 7529 4342 7552 4346 7576
      4369 7578 4368 7621 4380 7624 4387 7630
      4392 7637 4388 7645 4390 7645 4393 7637
      4387 7629 4390 7614 4398 7622 4395 7628
      4396 7629 4400 7629 4401 7616 4406 7618
TIME...MOT...LOC 1941Z 237DEG 48KT 4381 7634 4331 7634

$$

ZAFF

2 follow-up statements

171 
WWUS51 KBUF 052021
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
421 PM EDT SUN AUG 5 2012

NYC045-049-075-052045-
/O.CON.KBUF.SV.W.0064.000000T0000Z-120805T2045Z/
LEWIS NY-JEFFERSON NY-OSWEGO NY-
421 PM EDT SUN AUG 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR EXTREME NORTHEASTERN OSWEGO...JEFFERSON AND WESTERN LEWIS
COUNTIES...

AT 417 PM 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 WEST CARTHAGE TO OSCEOLA...MOVING EAST AT 60 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  HIGHMARKET...
  TURIN...
  PORT LEYDEN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THERE ARE MORE STORMS NEAR SACKETS AND HENDERSON HARBORS.  THESE 
STORMS ALSO HAVE THE POTENTIAL TO BRING DOWN TREES AND POWERLINES. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4428 7580 4353 7529 4342 7552 4346 7576
      4369 7578 4368 7621 4380 7624 4387 7630
      4392 7637 4388 7645 4390 7645 4393 7637
      4387 7629 4390 7614 4398 7622 4395 7628
      4396 7629 4400 7629 4401 7616 4406 7618
TIME...MOT...LOC 2020Z 249DEG 51KT 4396 7558 4347 7558

$$

ZAFF

426 
WWUS51 KBUF 052040
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
440 PM EDT SUN AUG 5 2012

NYC045-049-075-052050-
/O.EXP.KBUF.SV.W.0064.000000T0000Z-120805T2045Z/
LEWIS NY-JEFFERSON NY-OSWEGO NY-
440 PM EDT SUN AUG 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHEASTERN OSWEGO...
JEFFERSON AND WESTERN LEWIS COUNTIES WILL EXPIRE AT 445 PM EDT...

RADAR INDICATED THAT HEAVY RAIN...AND GUSTY WINDS WERE STILL 
POSSIBLE FROM THE THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.

LAT...LON 4428 7580 4353 7529 4342 7552 4346 7576
      4369 7578 4368 7621 4380 7624 4387 7630
      4392 7637 4388 7645 4390 7645 4393 7637
      4387 7629 4390 7614 4398 7622 4395 7628
      4396 7629 4400 7629 4401 7616 4406 7618
TIME...MOT...LOC 2040Z 249DEG 51KT 4406 7521 4357 7521

$$

ZAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 11:53 AM EDT	Special Marine Warning	BUF		2 hr
Aug 5, 12:55 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	50 min
Aug 5, 1:24 PM EDT	Severe Thunderstorm Warning	BUF	Erie	51 min
Aug 5, 1:36 PM EDT	Severe Thunderstorm Warning	BUF	Erie	39 min
Aug 5, 1:56 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	49 min
Aug 5, 2:12 PM EDT	Severe Thunderstorm Warning	BUF	Genesee	28 min
Aug 5, 2:27 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Wyoming	33 min
Aug 5, 2:34 PM EDT	Special Marine Warning	BUF		56 min
Aug 5, 2:40 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	50 min
Aug 5, 2:44 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	21 min
Aug 5, 2:54 PM EDT	Special Marine Warning	BUF		96 min
Aug 5, 2:57 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Ontario	33 min
Aug 5, 3:11 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	64 min
Aug 5, 3:49 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	26 min
Aug 5, 3:57 PM EDT	Flash Flood Warning	BUF	Jefferson	111 min
Aug 5, 4:11 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	49 min
Aug 5, 4:13 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	32 min
Aug 5, 4:32 PM EDT	Areal Flood Advisory	BUF	Jefferson	77 min
Aug 5, 7:04 PM EDT	Special Weather Statement	BUF	Monroe	56 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.