Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 59, NWS Buffalo, NY

August 5, 2012Genesee County, Livingston County, Wyoming County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 5, 2012, 2:27 PM EDT for Genesee County, Livingston County, Wyoming County, New York. It was in force for 33 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: Aug 5, 2012, 2:27 PM EDT (18:27 UTC)
Expired: Aug 5, 2012, 3:00 PM EDT
In force: 33 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Genesee County, NY, Livingston County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 67 km from the middle of the area, began a volume at 18:29 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 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.5 hours before the alert went out and 64 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: 128 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1179 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

765 
WUUS51 KBUF 051827
SVRBUF
NYC037-051-121-051900-
/O.NEW.KBUF.SV.W.0059.120805T1827Z-120805T1900Z/

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

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN GENESEE COUNTY IN WESTERN NEW YORK
  NORTH CENTRAL LIVINGSTON COUNTY IN WESTERN NEW YORK
  NORTHEASTERN WYOMING COUNTY IN WESTERN NEW YORK

* UNTIL 300 PM EDT

* AT 224 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR PAVILION...OR 10 MILES
  SOUTHEAST OF BATAVIA...AND MOVING EAST AT 45 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  WYOMING...
  PAVILION...
  YORK...
  AVON...
  GENESEO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4278 7815 4294 7816 4296 7774 4294 7774
      4294 7776 4294 7774 4293 7774 4277 7774
TIME...MOT...LOC 1826Z 263DEG 41KT 4287 7806

$$

ZAFF

2 follow-up statements

552 
WWUS51 KBUF 051850
SVSBUF

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

NYC037-051-121-051900-
/O.CON.KBUF.SV.W.0059.000000T0000Z-120805T1900Z/
GENESEE NY-LIVINGSTON NY-WYOMING NY-
250 PM EDT SUN AUG 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR NORTHEASTERN WYOMING...NORTH CENTRAL LIVINGSTON AND SOUTHEASTERN
GENESEE COUNTIES...

AT 247 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR YORK...OR 8 MILES NORTH OF GENESEO...MOVING EAST AT 45
MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO 
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. 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.

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

&&

LAT...LON 4278 7815 4294 7816 4296 7774 4294 7774
      4294 7776 4294 7774 4293 7774 4277 7774
TIME...MOT...LOC 1850Z 263DEG 41KT 4291 7773

$$

TJP

252 
WWUS51 KBUF 051858
SVSBUF

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

NYC037-051-121-051908-
/O.EXP.KBUF.SV.W.0059.000000T0000Z-120805T1900Z/
GENESEE NY-LIVINGSTON NY-WYOMING NY-
258 PM EDT SUN AUG 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WYOMING...NORTH
CENTRAL LIVINGSTON AND SOUTHEASTERN GENESEE COUNTIES WILL EXPIRE AT
300 PM EDT...

AT 258 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.

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...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 4278 7815 4294 7816 4296 7774 4294 7774
      4294 7776 4294 7774 4293 7774 4277 7774
TIME...MOT...LOC 1858Z 263DEG 41KT 4292 7761

$$

TJP

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, 2:34 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, 3:42 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	63 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.