Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 51, NWS Buffalo, NY

July 31, 2012Jefferson County, Lewis County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 31, 2012, 6:48 PM EDT for Jefferson County, Lewis County, New York. It was in force for 72 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 31, 2012, 6:48 PM EDT (22:48 UTC)
Expired: Jul 31, 2012, 8:00 PM EDT
In force: 72 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Jefferson County, NY, Lewis County, NY

The radar

The Ft Drum radar (KTYX), 8 km from the middle of the area, began a volume at 22:51 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.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 10.8 hours before the alert went out and 194 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.

502 
WUUS51 KBUF 312248
SVRBUF
NYC045-049-010000-
/O.NEW.KBUF.SV.W.0051.120731T2248Z-120801T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
648 PM EDT TUE JUL 31 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN JEFFERSON COUNTY IN CENTRAL NEW YORK
  LEWIS COUNTY IN CENTRAL NEW YORK

* UNTIL 800 PM EDT

* AT 642 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 11 MILES SOUTHWEST OF WATERTOWN
  TO 24 MILES SOUTHWEST OF BARNES CORNERS...AND MOVING NORTHEAST AT  
  35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  WATERTOWN...
  CALCIUM...
  FORT DRUM...
  WEST CARTHAGE...
  LOWVILLE...
  INDIAN RIVER...
  BARNES CORNERS...
  MONTAGUE...
  COPENHAGEN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS THAT HAVE A HISTORY OF PRODUCING 
WIDESPREAD WIND DAMAGE. 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.

&&

LAT...LON 4351 7574 4359 7577 4368 7577 4369 7581
      4410 7596 4433 7568 4417 7531 4385 7513
TIME...MOT...LOC 2246Z 225DEG 31KT 4389 7605 4352 7597

$$

HITCHCOCK

2 follow-up statements

184 
WWUS51 KBUF 312339
SVSBUF

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

NYC045-049-010000-
/O.CON.KBUF.SV.W.0051.000000T0000Z-120801T0000Z/
LEWIS NY-JEFFERSON NY-
739 PM EDT TUE JUL 31 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHEASTERN JEFFERSON AND LEWIS COUNTIES...

AT 737 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 PHILADELPHIA TO MARTINSBURG...MOVING NORTHEAST AT 35 
MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  LOWVILLE...
  CARTHAGE...
  CROGHAN...
  NATURAL BRIDGE...
  FORT DRUM...
  HARRISVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS THAT HAVE A HISTORY OF PRODUCING WIND 
DAMAGE. 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.

&&

LAT...LON 4360 7559 4416 7588 4433 7568 4417 7531
      4385 7513
TIME...MOT...LOC 2338Z 225DEG 31KT 4416 7577 4373 7545

$$

HITCHCOCK

614 
WWUS51 KBUF 010000
SVSBUF

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

NYC045-049-010010-
/O.EXP.KBUF.SV.W.0051.000000T0000Z-120801T0000Z/
LEWIS NY-JEFFERSON NY-
800 PM EDT TUE JUL 31 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JEFFERSON AND
LEWIS COUNTIES HAS EXPIRED...

AT 800 PM EDT 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 4360 7559 4416 7588 4433 7568 4417 7531
      4385 7513
TIME...MOT...LOC 2339Z 225DEG 31KT 4416 7575 4373 7544

$$

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, 5:31 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	59 min
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

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.