Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 69, NWS Buffalo, NY

August 9, 2012Allegany County, Cattaraugus County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 9, 2012, 7:07 PM EDT for Allegany County, Cattaraugus County, New York. It was in force for 53 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
Aug 9, 2012, 7:07 PM EDT (23:07 UTC)
Expired
Aug 9, 2012, 8:00 PM EDT
In force
53 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Allegany County, NY, Cattaraugus County, NY

The radar

The Buffalo radar (KBUF), 102 km from the middle of the area, began a volume at 23:11 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
Aug 9, 7:15 PM EDTTSTM WND DMG1 Ne Olean, NYTREE DOWN.
Aug 9, 7:29 PM EDTTSTM WND DMG2 Ese Bedford Corners, NYTREE DOWN ON SHERRY HOLLOW RD.
Aug 9, 7:35 PM EDTTSTM WND DMGBolivar, NYTREE DOWN IN A PARKING LOT.
Aug 9, 7:35 PM EDTHAIL 0.88Bolivar, 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 12:00Z, 11.1 hours before the alert went out and 99 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 12:00Z on 2012-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2012-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1185 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

795 
WUUS51 KBUF 092307
SVRBUF
NYC003-009-100000-
/O.NEW.KBUF.SV.W.0069.120809T2307Z-120810T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
707 PM EDT THU AUG 9 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ALLEGANY COUNTY IN WESTERN NEW YORK
  SOUTHEASTERN CATTARAUGUS COUNTY IN WESTERN NEW YORK

* UNTIL 800 PM EDT

* AT 701 PM 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
  WESTON MILLS...OR 6 MILES EAST OF OLEAN...AND MOVING NORTHEAST 
  AT 20 MPH. THIS STORM WILL ALSO PRODUCE VERY HEAVY RAIN. 

* SOME LOCATIONS IN THE WARNING INCLUDE...
  BOLIVAR...
  RICHBURG...
  FRIENDSHIP...
  BELMONT...

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.

&&

LAT...LON 4212 7846 4242 7785 4226 7773 4217 7773
      4199 7824 4200 7836
TIME...MOT...LOC 2307Z 240DEG 19KT 4209 7828

$$

TJP
2 follow-up statements
482 
WWUS51 KBUF 092326
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
726 PM EDT THU AUG 9 2012

NYC003-009-100000-
/O.CON.KBUF.SV.W.0069.000000T0000Z-120810T0000Z/
ALLEGANY NY-CATTARAUGUS NY-
726 PM EDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR SOUTHEASTERN CATTARAUGUS AND ALLEGANY COUNTIES...

AT 724 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 RICHBURG...OR 12 MILES WEST OF WELLSVILLE...MOVING
NORTHEAST AT 20 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  FRIENDSHIP...
  SCIO...

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.

&&

LAT...LON 4212 7846 4242 7785 4226 7773 4217 7773
      4199 7824 4200 7836
TIME...MOT...LOC 2326Z 240DEG 19KT 4212 7817

$$

TJP
194 
WWUS51 KBUF 092359
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
759 PM EDT THU AUG 9 2012

NYC003-009-100008-
/O.EXP.KBUF.SV.W.0069.000000T0000Z-120810T0000Z/
ALLEGANY NY-CATTARAUGUS NY-
759 PM EDT THU AUG 9 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CATTARAUGUS AND
ALLEGANY COUNTIES WILL EXPIRE AT 800 PM EDT...

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

LAT...LON 4212 7846 4242 7785 4226 7773 4217 7773
      4199 7824 4200 7836
TIME...MOT...LOC 2358Z 240DEG 19KT 4220 7797

$$

TJP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 3:31 PM EDTSpecial Marine WarningBUF44 min
Aug 9, 3:59 PM EDTSpecial Weather StatementBUFLewis61 min
Aug 9, 4:29 PM EDTSevere Thunderstorm WarningBUFLewis31 min
Aug 9, 6:56 PM EDTSpecial Weather StatementBUFAllegany49 min
Aug 9, 7:20 PM EDTFlash Flood WarningBUFAllegany, Cattaraugus3 hr

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.