Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 32, NWS Buffalo, NY

May 29, 2011Cayuga County, Oswego County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 29, 2011, 11:39 PM EDT for Cayuga County, Oswego County, Wayne County, New York. It was in force for 66 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 29, 2011, 11:39 PM EDT (03:39 UTC)
Expired
May 30, 2011, 12:45 AM EDT
In force
66 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Cayuga County, NY, Oswego County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 72 km from the middle of the area, began a volume at 03:41 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 watch it was issued in

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

IssuedProductOfficeLasted
May 29, 8:52 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 3.7 hours before the alert went out and 197 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 2011-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1339 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 00:00Z on 2011-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 118 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
1339 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
834 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
118 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

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

620 
WUUS51 KBUF 300339
SVRBUF
NYC011-075-117-300445-
/O.NEW.KBUF.SV.W.0032.110530T0339Z-110530T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1139 PM EDT SUN MAY 29 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CAYUGA COUNTY IN CENTRAL NEW YORK
  OSWEGO COUNTY IN CENTRAL NEW YORK
  EASTERN WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 1245 AM EDT

* AT 1134 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
  IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 27 MILES WEST OF CATO TO 30 MILES SOUTHWEST OF
  WEEDSPORT...AND MOVING EAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  WEEDSPORT...
  OSWEGO...
  FULTON...
  NINE MILE POINT...
  PHOENIX...
  CENTRAL SQUARE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT MONDAY
MORNING FOR WESTERN NEW YORK.

&&

LAT...LON 4315 7588 4319 7608 4326 7620 4320 7622
      4323 7644 4322 7647 4303 7649 4302 7683
      4330 7688 4335 7670 4343 7663 4353 7642
      4354 7624 4362 7620 4363 7617 4336 7586
TIME...MOT...LOC 0338Z 263DEG 32KT 4327 7706 4278 7697

$$

TMA
2 follow-up statements
128 
WWUS51 KBUF 300421
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1221 AM EDT MON MAY 30 2011

NYC011-075-117-300445-
/O.CON.KBUF.SV.W.0032.000000T0000Z-110530T0445Z/
WAYNE NY-OSWEGO NY-CAYUGA NY-
1221 AM EDT MON MAY 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT
FOR NORTHWESTERN CAYUGA...OSWEGO AND EASTERN WAYNE COUNTIES...

AT 1216 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM HANNIBAL TO 16 MILES SOUTH OF
WEEDSPORT...OR ALONG A LINE EXTENDING FROM 9 MILES WEST OF FULTON TO
8 MILES SOUTH OF AUBURN...MOVING EAST AT 35 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  SCRIBA...
  NINE MILE POINT...
  PALERMO...
  SAND RIDGE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM EDT MONDAY
MORNING FOR WESTERN NEW YORK.

&&

LAT...LON 4315 7588 4319 7608 4326 7620 4320 7622
      4323 7644 4322 7647 4303 7649 4302 7683
      4330 7688 4335 7670 4343 7663 4353 7642
      4354 7624 4362 7620 4363 7617 4336 7586
TIME...MOT...LOC 0421Z 263DEG 32KT 4332 7654 4282 7645

$$

SFM
016 
WWUS51 KBUF 300441
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1241 AM EDT MON MAY 30 2011

NYC011-075-117-300451-
/O.EXP.KBUF.SV.W.0032.000000T0000Z-110530T0445Z/
WAYNE NY-OSWEGO NY-CAYUGA NY-
1241 AM EDT MON MAY 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CAYUGA...OSWEGO
AND EASTERN WAYNE COUNTIES WILL EXPIRE AT 1245 AM EDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM EDT MONDAY
MORNING FOR WESTERN NEW YORK.

LAT...LON 4315 7588 4319 7608 4326 7620 4320 7622
      4323 7644 4322 7647 4303 7649 4302 7683
      4330 7688 4335 7670 4343 7663 4353 7642
      4354 7624 4362 7620 4363 7617 4336 7586
TIME...MOT...LOC 0441Z 263DEG 32KT 4334 7630 4284 7621

$$

SFM

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 8:03 PM EDTSpecial Marine WarningBUF87 min
May 29, 8:34 PM EDTSevere Thunderstorm WarningBUFChautauqua56 min
May 29, 8:58 PM EDTSpecial Marine WarningBUF62 min
May 29, 9:17 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua58 min
May 29, 9:24 PM EDTSpecial Weather StatementBUFErie, Niagara51 min
May 29, 9:42 PM EDTSpecial Marine WarningBUF33 min
May 29, 9:57 PM EDTSpecial Marine WarningBUF63 min
May 29, 10:04 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus56 min
May 29, 10:18 PM EDTSpecial Weather StatementBUFGenesee, Livingston, Monroe, Orleans, Wyoming57 min
May 29, 10:21 PM EDTSevere Thunderstorm WarningBUFAllegany, Genesee, Livingston, Wyoming34 min
May 29, 10:27 PM EDTSevere Thunderstorm WarningBUFGenesee, Livingston, Monroe, Ontario, Orleans63 min
May 29, 10:30 PM EDTSevere Thunderstorm WarningBUFAllegany26 min
May 29, 10:41 PM EDTSevere Thunderstorm WarningBUFGenesee, Livingston, Ontario, Wyoming50 min
May 29, 10:57 PM EDTSpecial Marine WarningBUF63 min
May 29, 11:13 PM EDTSevere Thunderstorm WarningBUFMonroe, Ontario, Wayne62 min
May 29, 11:44 PM EDTSpecial Marine WarningBUF46 min
May 30, 12:31 AM EDTSpecial Weather StatementBUFLewis74 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.