Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 55, NWS Buffalo, NY

July 26, 2011Ontario County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 26, 2011, 11:04 AM EDT for Ontario County, Wayne County, New York. It was in force for 56 min. 5 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: Jul 26, 2011, 11:04 AM EDT (15:04 UTC)
Expired: Jul 26, 2011, 12:00 PM EDT
In force: 56 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Ontario County, NY, Wayne County, NY

The radar

The Binghamton radar (KBGM), 125 km from the middle of the area, began a volume at 15:04 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

Time	Report	Where
Jul 26, 11:10 AM EDT	HAIL 1.25	Palmyra, NY
Jul 26, 11:20 AM EDT	HAIL 1	Newark, NY
Jul 26, 11:25 AM EDT	HAIL 1	Newark, NY
Jul 26, 11:30 AM EDT	HAIL 1	1 E Newark, NY
Jul 26, 11:30 AM EDT	HAIL 1.75	Lyons, NY

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, 3.1 hours before the alert went out and 134 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 975 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 821 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 333 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

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

422 
WUUS51 KBUF 261504
SVRBUF
NYC069-117-261600-
/O.NEW.KBUF.SV.W.0055.110726T1504Z-110726T1600Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1104 AM EDT TUE JUL 26 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL NOON EDT

* AT 1102 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 6 MILES
  WEST OF PALMYRA AND FAIRPORT...AND MOVING EAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  PALMYRA...
  NEWARK...
  PHELPS...
  LYONS...

LAT...LON 4305 7737 4316 7738 4305 7672 4302 7671
      4301 7696 4287 7695 4285 7698
TIME...MOT...LOC 1503Z 292DEG 29KT 4309 7733

$$

ZAFF

2 follow-up statements

627 
WWUS51 KBUF 261528
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1128 AM EDT TUE JUL 26 2011

NYC069-117-261600-
/O.CON.KBUF.SV.W.0055.000000T0000Z-110726T1600Z/
ONTARIO NY-WAYNE NY-
1128 AM EDT TUE JUL 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON EDT FOR
SOUTHEASTERN WAYNE AND NORTHEASTERN ONTARIO COUNTIES...

AT 1124 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 NEWARK...MOVING EAST AT 35 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  NEWARK...
  LYONS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HAIL UP TO 1 INCH IN DIAMETER HAS BEEN REPORTED IN NEWARK...AND 1.25 
INCHES IN PALMYRA. IF YOU ARE IN THE PATH OF THIS STORM...TAKE 
IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 4303 7718 4311 7709 4305 7672 4302 7671
      4301 7696 4295 7696
TIME...MOT...LOC 1527Z 289DEG 30KT 4303 7705

$$

ZAFF

025 
WWUS51 KBUF 261553
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1153 AM EDT TUE JUL 26 2011

NYC069-117-261604-
/O.EXP.KBUF.SV.W.0055.000000T0000Z-110726T1600Z/
ONTARIO NY-WAYNE NY-
1153 AM EDT TUE JUL 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WAYNE AND
NORTHEASTERN ONTARIO COUNTIES WILL EXPIRE AT NOON EDT...

AT 1154 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.

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

LAT...LON 4303 7718 4311 7709 4305 7672 4302 7671
      4301 7696 4295 7696
TIME...MOT...LOC 1554Z 289DEG 30KT 4295 7676

$$

ZAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 8:31 PM EDT	Special Weather Statement	BUF	Livingston	29 min
Jul 26, 9:32 AM EDT	Special Marine Warning	BUF		15 min
Jul 26, 11:17 AM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Wayne	43 min
Jul 26, 11:52 AM EDT	Severe Thunderstorm Warning	BUF	Oswego	23 min
Jul 26, 12:07 PM EDT	Special Weather Statement	BUF	Ontario	53 min
Jul 26, 3:26 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	49 min

Nearby

Severe Thunderstorm Warnings in New York, 2011 Every 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.