Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 35, NWS Buffalo, NY

July 24, 2012Allegany County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 24, 2012, 12:51 AM EDT for Allegany County, New York. It was in force for 24 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 24, 2012, 12:51 AM EDT (04:51 UTC)
Expired
Jul 24, 2012, 1:15 AM EDT
In force
24 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

County Allegany County, NY

The radar

The Buffalo radar (KBUF), 93 km from the middle of the area, began a volume at 04:54 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

Pittsburgh, PA (KPIT), launched 00:00Z, 4.9 hours before the alert went out and 294 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, Pittsburgh, PA at 00:00Z on 2012-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 673 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, Pittsburgh, PA at 00:00Z on 2012-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 242 square meters per square second.19395878Sfc1 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
673 J/kg
Mixed-layer CIN
-169 J/kg
Mixed-layer LCL
1266 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
242 m²/s²
0-3 km storm-relative helicity
398 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

444 
WUUS51 KBUF 240451
SVRBUF
NYC003-240515-
/O.NEW.KBUF.SV.W.0035.120724T0451Z-120724T0515Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1251 AM EDT TUE JUL 24 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 115 AM EDT

* AT 1249 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
  CANASERAGA...OR 9 MILES NORTHWEST OF ARKPORT...AND MOVING SOUTHEAST
  AT 30 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  BURNS...
  ALMOND...

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 4245 7800 4252 7789 4250 7784 4248 7784
      4247 7776 4246 7772 4229 7773 4228 7774
TIME...MOT...LOC 0451Z 304DEG 27KT 4244 7784

$$

HITCHCOCK
2 follow-up statements
683 
WWUS51 KBUF 240503
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
103 AM EDT TUE JUL 24 2012

NYC003-240515-
/O.CON.KBUF.SV.W.0035.000000T0000Z-120724T0515Z/
ALLEGANY NY-
103 AM EDT TUE JUL 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR NORTHEASTERN ALLEGANY COUNTY...

AT 102 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 ALMOND...OR NEAR ARKPORT...MOVING SOUTHEAST AT 30 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  ALMOND...

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 4235 7784 4247 7779 4247 7776 4246 7772
      4229 7773 4228 7774
TIME...MOT...LOC 0503Z 304DEG 27KT 4238 7774

$$

HITCHCOCK
404 
WWUS51 KBUF 240512
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
112 AM EDT TUE JUL 24 2012

NYC003-240523-
/O.EXP.KBUF.SV.W.0035.000000T0000Z-120724T0515Z/
ALLEGANY NY-
112 AM EDT TUE JUL 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ALLEGANY COUNTY
WILL EXPIRE AT 115 AM EDT...

AT 113 AM 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.

LAT...LON 4235 7784 4247 7779 4247 7776 4246 7772
      4229 7773 4228 7774
TIME...MOT...LOC 0513Z 304DEG 27KT 4234 7766

$$

HITCHCOCK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 11:02 PM EDTSpecial Weather StatementBUFOswego58 min
Jul 23, 11:20 PM EDTSpecial Weather StatementBUFJefferson55 min
Jul 23, 11:45 PM EDTSevere Thunderstorm WarningBUFGenesee, Livingston, Wyoming34 min
Jul 24, 12:46 AM EDTSpecial Weather StatementBUFAllegany44 min
Jul 24, 3:58 AM EDTSmall Craft AdvisoryBUF16 hr
Jul 24, 2:30 PM EDTSpecial Weather StatementBUFOswego45 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.