Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS Buffalo, NY

May 3, 2012Livingston County, Ontario County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 3, 2012, 11:22 PM EDT for Livingston County, Ontario County, New York. It was in force for 37 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
May 3, 2012, 11:22 PM EDT (03:22 UTC)
Expired
May 3, 2012, 11:59 PM EDT
In force
37 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Livingston County, NY, Ontario County, NY

The radar

The Buffalo radar (KBUF), 103 km from the middle of the area, began a volume at 03:24 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 3.4 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 00:00Z on 2012-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 842 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 2012-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 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
842 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1453 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.7

Open this sounding in Storm Lab

The text

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

007 
WUUS51 KBUF 040322
SVRBUF
NYC051-069-040415-
/O.NEW.KBUF.SV.W.0013.120504T0322Z-120504T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1122 PM EDT THU MAY 3 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN LIVINGSTON COUNTY IN WESTERN NEW YORK
  SOUTHERN ONTARIO COUNTY IN WESTERN NEW YORK

* UNTIL 1215 AM EDT

* AT 1120 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
  CONESUS...OR 8 MILES SOUTHEAST OF GENESEO...AND MOVING EAST AT 40
  MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  HONEOYE...

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 4253 7805 4283 7777 4284 7697 4275 7700
      4276 7731 4266 7736 4257 7737 4257 7765
      4254 7766 4253 7771 4250 7772
TIME...MOT...LOC 0322Z 261DEG 35KT 4275 7765

$$

HITCHCOCK
2 follow-up statements
005 
WWUS51 KBUF 040347
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1147 PM EDT THU MAY 3 2012

NYC051-069-040415-
/O.CON.KBUF.SV.W.0013.000000T0000Z-120504T0415Z/
LIVINGSTON NY-ONTARIO NY-
1147 PM EDT THU MAY 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR SOUTHERN ONTARIO AND SOUTHEASTERN LIVINGSTON COUNTIES...

AT 1145 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE 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 GENEVA TO DANSVILLE... 
MOVING EAST AT 40 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  NAPLES...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. 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 4251 7784 4283 7743 4284 7697 4275 7700
      4276 7731 4266 7736 4257 7737 4257 7765
      4254 7766 4253 7771 4250 7772
TIME...MOT...LOC 0346Z 261DEG 35KT 4282 7697 4254 7770

$$

HITCHCOCK
503 
WWUS51 KBUF 040359
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1159 PM EDT THU MAY 3 2012

NYC051-069-040409-
/O.CAN.KBUF.SV.W.0013.000000T0000Z-120504T0415Z/
LIVINGSTON NY-ONTARIO NY-
1159 PM EDT THU MAY 3 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ONTARIO AND
SOUTHEASTERN LIVINGSTON COUNTIES IS CANCELLED...

AT 1159 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 CANCELLED.

LAT...LON 4251 7784 4283 7743 4284 7697 4275 7700
      4276 7731 4266 7736 4257 7737 4257 7765
      4254 7766 4253 7771 4250 7772
TIME...MOT...LOC 0359Z 261DEG 35KT 4284 7680 4256 7753

$$

HITCHCOCK

The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 10:40 PM EDTSpecial Marine WarningBUF80 min
May 3, 10:43 PM EDTSevere Thunderstorm WarningBUFLivingston, Monroe, Ontario, Wayne62 min
May 3, 11:40 PM EDTSpecial Weather StatementBUFJefferson, Oswego65 min
May 3, 11:42 PM EDTSevere Thunderstorm WarningBUFCayuga, Wayne29 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.