Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 60, NWS Buffalo, NY

August 5, 2012Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 5, 2012, 2:40 PM EDT for Wayne County, New York. It was in force for 50 min. 3 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 5, 2012, 2:40 PM EDT (18:40 UTC)
Expired
Aug 5, 2012, 3:30 PM EDT
In force
50 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

County Wayne County, NY

The radar

The Ft Drum radar (KTYX), 125 km from the middle of the area, began a volume at 18:43 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 5, 2:50 PM EDTTSTM WND DMGWalworth, NYNUMEROUS TREES... TREE LIMBS AND WIRES DOWN IN WALWORTH AND ONTARIO
Aug 5, 2:52 PM EDTTSTM WND DMGSodus, NYTREE LIMDS AND WIRES DOWN
Aug 5, 3:01 PM EDTTSTM WND DMGHuron, NYTREE LIMBS AND WIRES DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 5, 12:42 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.7 hours before the alert went out and 137 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 2012-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 128 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2012-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 177 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
128 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
1179 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
177 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

398 
WUUS51 KBUF 051840
SVRBUF
NYC117-051930-
/O.NEW.KBUF.SV.W.0060.120805T1840Z-120805T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
240 PM EDT SUN AUG 5 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 330 PM EDT

* AT 234 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS  
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR WEBSTER...AND MOVING EAST  
  AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  ONTARIO...
  WALWORTH...  
  WILLIAMSON...
  MARION...
  MACEDON...
  SODUS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4304 7737 4327 7737 4329 7731 4328 7726
      4330 7716 4328 7700 4328 7694 4330 7690
      4337 7696 4330 7690 4332 7679 4335 7672
      4311 7670
TIME...MOT...LOC 1839Z 253DEG 32KT 4318 7735

$$

ZAFF
2 follow-up statements
596 
WWUS51 KBUF 051903
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
303 PM EDT SUN AUG 5 2012

NYC117-051930-
/O.CON.KBUF.SV.W.0060.000000T0000Z-120805T1930Z/
WAYNE NY-
303 PM EDT SUN AUG 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR EASTERN WAYNE COUNTY...

AT 257 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 SODUS TO NORTH ROSE TO 10 
MILES SOUTH OF SODUS....MOVING EAST AT 35 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  WOLCOTT...
  PORT BAY...
  RED CREEK...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4335 7672 4311 7670 4307 7712 4318 7707
      4329 7716 4328 7694 4330 7690 4337 7696
      4330 7690 4332 7679
TIME...MOT...LOC 1902Z 253DEG 32KT 4328 7698 4320 7693
          4311 7699

$$

TJP
863 
WWUS51 KBUF 051930
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
330 PM EDT SUN AUG 5 2012

NYC117-051940-
/O.EXP.KBUF.SV.W.0060.000000T0000Z-120805T1930Z/
WAYNE NY-
330 PM EDT SUN AUG 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WAYNE COUNTY HAS
EXPIRED...

AT 330 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.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR WESTERN NEW YORK.

LAT...LON 4335 7672 4311 7670 4307 7712 4318 7707
      4329 7716 4328 7694 4330 7690 4337 7696
      4330 7690 4332 7679
TIME...MOT...LOC 1930Z 253DEG 32KT 4335 7665 4327 7660
          4318 7666

$$

TJP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 11:53 AM EDTSpecial Marine WarningBUF2 hr
Aug 5, 12:55 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua, Erie50 min
Aug 5, 1:24 PM EDTSevere Thunderstorm WarningBUFErie51 min
Aug 5, 1:36 PM EDTSevere Thunderstorm WarningBUFErie39 min
Aug 5, 1:56 PM EDTSevere Thunderstorm WarningBUFMonroe49 min
Aug 5, 2:12 PM EDTSevere Thunderstorm WarningBUFGenesee28 min
Aug 5, 2:27 PM EDTSevere Thunderstorm WarningBUFGenesee, Livingston, Wyoming33 min
Aug 5, 2:34 PM EDTSpecial Marine WarningBUF56 min
Aug 5, 2:44 PM EDTSevere Thunderstorm WarningBUFMonroe21 min
Aug 5, 2:54 PM EDTSpecial Marine WarningBUF96 min
Aug 5, 2:57 PM EDTSevere Thunderstorm WarningBUFMonroe, Ontario33 min
Aug 5, 3:11 PM EDTSevere Thunderstorm WarningBUFCayuga, Oswego64 min
Aug 5, 3:42 PM EDTSevere Thunderstorm WarningBUFJefferson, Lewis, Oswego63 min
Aug 5, 3:49 PM EDTSevere Thunderstorm WarningBUFJefferson26 min
Aug 5, 3:57 PM EDTFlash Flood WarningBUFJefferson111 min
Aug 5, 4:11 PM EDTSevere Thunderstorm WarningBUFJefferson, Lewis49 min
Aug 5, 4:13 PM EDTSevere Thunderstorm WarningBUFOswego32 min
Aug 5, 4:32 PM EDTAreal Flood AdvisoryBUFJefferson77 min
Aug 5, 7:04 PM EDTSpecial Weather StatementBUFMonroe56 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.