Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 44, NWS Buffalo, NY

June 11, 2011Ontario County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 11, 2011, 7:09 PM EDT for Ontario County, Wayne County, New York. It was in force for 51 min. 2 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
Jun 11, 2011, 7:09 PM EDT (23:09 UTC)
Expired
Jun 11, 2011, 8:00 PM EDT
In force
51 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Ontario County, NY, Wayne County, NY

The radar

The Binghamton radar (KBGM), 123 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
Jun 11, 7:15 PM EDTHAIL 0.75Newark, NYOTHER REPORT OF HAIL COVERING THE GROUND.
Jun 11, 7:20 PM EDTTSTM WND DMGLyons, NYTREE FELL ON CAR. NO INJURIES

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, 11.2 hours before the alert went out and 145 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 2011-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 25 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 12:00Z on 2011-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 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
25 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
646 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

056 
WUUS51 KBUF 112309
SVRBUF
NYC069-117-120000-
/O.NEW.KBUF.SV.W.0044.110611T2309Z-110612T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
709 PM EDT SAT JUN 11 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ONTARIO COUNTY IN WESTERN NEW YORK
  EASTERN WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 800 PM EDT

* AT 700 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
  NEWARK...OR 12 MILES NORTHEAST OF CANANDAIGUA...AND MOVING
  NORTHEAST AT 25 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  LYONS...
  CLYDE...

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 4298 7715 4305 7716 4330 7685 4305 7671
      4304 7672 4302 7671
TIME...MOT...LOC 2309Z 229DEG 21KT 4305 7707

$$

RSH
2 follow-up statements
888 
WWUS51 KBUF 112334
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
734 PM EDT SAT JUN 11 2011

NYC069-112344-
/O.CAN.KBUF.SV.W.0044.000000T0000Z-110612T0000Z/
ONTARIO NY-
734 PM EDT SAT JUN 11 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ONTARIO COUNTY IS
CANCELLED...

LAT...LON 4307 7711 4330 7685 4305 7671 4302 7671
      4301 7696 4301 7709
TIME...MOT...LOC 2334Z 229DEG 21KT 4315 7692

$$

NYC117-120000-
/O.CON.KBUF.SV.W.0044.000000T0000Z-110612T0000Z/
WAYNE NY-
734 PM EDT SAT JUN 11 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR EASTERN WAYNE COUNTY...

AT 731 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 NORTH ROSE...OR 14 MILES NORTHWEST OF MONTEZUMA...MOVING
NORTHEAST AT 25 MPH. ANOTHER VERY STRONG STORM WAS LOCATED NEAR 
SODUS BAY.

SOME LOCATIONS IN THE WARNING INCLUDE...
  NORTH ROSE...
  WOLCOTT...

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 4307 7711 4330 7685 4305 7671 4302 7671
      4301 7696 4301 7709
TIME...MOT...LOC 2334Z 229DEG 21KT 4315 7692

$$

RSH
542 
WWUS51 KBUF 112358
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
758 PM EDT SAT JUN 11 2011

NYC117-120009-
/O.EXP.KBUF.SV.W.0044.000000T0000Z-110612T0000Z/
WAYNE NY-
758 PM EDT SAT JUN 11 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WAYNE COUNTY WILL
EXPIRE AT 800 PM EDT...

AT 759 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.

LAT...LON 4307 7711 4330 7685 4305 7671 4302 7671
      4301 7696 4301 7709
TIME...MOT...LOC 2359Z 229DEG 21KT 4325 7677

$$

RSH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 10:21 AM EDTSpecial Weather StatementBUFWyoming54 min
Jun 11, 11:04 AM EDTSpecial Weather StatementBUFWyoming56 min
Jun 11, 12:10 PM EDTSpecial Weather StatementBUFLivingston50 min
Jun 11, 12:40 PM EDTSpecial Weather StatementBUFLivingston35 min
Jun 11, 4:56 PM EDTSpecial Weather StatementBUFAllegany64 min
Jun 11, 7:25 PM EDTSpecial Weather StatementBUFLewis65 min
Jun 11, 7:29 PM EDTSpecial Marine WarningBUF35 min
Jun 11, 7:56 PM EDTSpecial Marine WarningBUF47 min

Nearby

Severe Thunderstorm Warnings in New York, 2011Every severe thunderstorm warning in 2011

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.