Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 33, NWS Buffalo, NY

July 23, 2012Erie County, Genesee County, Wyoming County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 23, 2012, 5:37 AM EDT for Erie County, Genesee County, Wyoming County, New York. It was in force for 38 min. 1 report 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 23, 2012, 5:37 AM EDT (09:37 UTC)
Expired
Jul 23, 2012, 6:15 AM EDT
In force
38 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Erie County, NY, Genesee County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 20 km from the middle of the area, began a volume at 09:38 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

TimeReportWhereRemark
Jul 23, 5:45 AM EDTTSTM WND DMG4 Ne Elma, NY

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 00:00Z, 9.6 hours before the alert went out and 16 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 00:00Z on 2012-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 347 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2012-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
347 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
1317 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
21 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.

663 
WUUS51 KBUF 230937
SVRBUF
NYC029-037-121-231015-
/O.NEW.KBUF.SV.W.0033.120723T0937Z-120723T1015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
537 AM EDT MON JUL 23 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL ERIE COUNTY IN WESTERN NEW YORK
  SOUTHWESTERN GENESEE COUNTY IN WESTERN NEW YORK
  NORTHWESTERN WYOMING COUNTY IN WESTERN NEW YORK

* UNTIL 615 AM EDT

* AT 534 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  WEST SENECA...AND MOVING EAST AT 30 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  CHEEKTOWAGA...
  LANCASTER...
  ELMA...
  MARILLA...
  COWLSVILLE...
  BENNINGTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS 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.

&&

LAT...LON 4291 7834 4271 7836 4281 7881 4293 7880
TIME...MOT...LOC 0937Z 278DEG 24KT 4286 7868

$$

HITCHCOCK
2 follow-up statements
539 
WWUS51 KBUF 230953
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
553 AM EDT MON JUL 23 2012

NYC029-037-121-231015-
/O.CON.KBUF.SV.W.0033.000000T0000Z-120723T1015Z/
GENESEE NY-WYOMING NY-ERIE NY-
553 AM EDT MON JUL 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM EDT
FOR EAST CENTRAL ERIE...NORTHWESTERN WYOMING AND SOUTHWESTERN GENESEE
COUNTIES...

AT 551 AM 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 MARILLA...OR 6 MILES NORTHEAST OF EAST AURORA...MOVING
EAST AT 30 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  MARILLA...
  COWLESVILLE...
  BENNINGTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS 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.

&&

LAT...LON 4291 7834 4271 7836 4277 7863 4291 7862
TIME...MOT...LOC 0953Z 278DEG 24KT 4284 7853

$$

HITCHCOCK
646 
WWUS51 KBUF 231010
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
610 AM EDT MON JUL 23 2012

NYC029-037-121-231020-
/O.EXP.KBUF.SV.W.0033.000000T0000Z-120723T1015Z/
GENESEE NY-WYOMING NY-ERIE NY-
610 AM EDT MON JUL 23 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL ERIE...
NORTHWESTERN WYOMING AND SOUTHWESTERN GENESEE COUNTIES WILL EXPIRE AT
615 AM EDT...

AT 610 AM 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.

PLEASE REPORT HAIL OR WIND DAMAGE TO LOCAL LAW ENFORCEMENT FOR RELAY 
TO THE NATIONAL WEATHER SERVICE IN BUFFALO.

LAT...LON 4291 7834 4271 7836 4277 7863 4291 7862
TIME...MOT...LOC 1010Z 278DEG 24KT 4282 7838

$$

HITCHCOCK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 1:53 AM EDTSpecial Weather StatementBUFMonroe52 min
Jul 23, 3:08 AM EDTSpecial Weather StatementBUFWayne52 min
Jul 23, 5:31 AM EDTSpecial Weather StatementBUFErie44 min
Jul 23, 2:59 PM EDTSpecial Weather StatementBUFLewis61 min
Jul 23, 4:30 PM EDTSpecial Marine WarningBUF79 min

Nearby

Severe Thunderstorm Warnings in New York, 2012Every 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.