Alert archive / New York / Tornado Warnings in 2011

Tornado Warning 5, NWS Buffalo, NY

June 22, 2011Ontario County, New York

NWS Buffalo, NY issued this tornado warning at Jun 22, 2011, 8:41 PM EDT for Ontario County, New York. It was in force for 19 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: Jun 22, 2011, 8:41 PM EDT (00:41 UTC)
Expired: Jun 22, 2011, 9:00 PM EDT
In force: 19 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Ontario County, NY

The radar

The Binghamton radar (KBGM), 115 km from the middle of the area, began a volume at 00:41 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 nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 0.7 hours before the alert went out and 130 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: 615 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 958 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

342 
WFUS51 KBUF 230041
TORBUF
NYC069-230100-
/O.NEW.KBUF.TO.W.0005.110623T0041Z-110623T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
841 PM EDT WED JUN 22 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL ONTARIO COUNTY IN WESTERN NEW YORK...

* UNTIL 900 PM EDT

* AT 836 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES SOUTH OF
  GORHAM...OR 8 MILES NORTHEAST OF MIDDLESEX...MOVING EAST AT 25 MPH.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
GOLFBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

&&

LAT...LON 4283 7721 4285 7697 4276 7697 4276 7721
TIME...MOT...LOC 0041Z 271DEG 23KT 4277 7709

$$

HIBBERT

1 follow-up statement

836 
WWUS51 KBUF 230058
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
858 PM EDT WED JUN 22 2011

NYC069-230108-
/O.EXP.KBUF.TO.W.0005.000000T0000Z-110623T0100Z/
ONTARIO NY-
858 PM EDT WED JUN 22 2011

...THE TORNADO WARNING FOR EAST CENTRAL ONTARIO COUNTY WILL EXPIRE AT
900 PM EDT...

AT 858 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE 
THUNDERSTORM WITH THE POSSIBLE TORNADO WILL EXIT THE WARNED 
AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 4283 7721 4285 7697 4276 7697 4276 7721
TIME...MOT...LOC 0058Z 271DEG 23KT 4277 7694

$$

HIBBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 8:23 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	37 min
Jun 23, 12:50 AM EDT	Special Marine Warning	BUF		54 min
Jun 23, 3:48 AM EDT	Special Weather Statement	BUF	Livingston, Ontario	57 min
Jun 23, 4:00 AM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario, Wayne	45 min
Jun 23, 2:41 PM EDT	Special Weather Statement	BUF	Lewis	64 min
Jun 23, 3:27 PM EDT	Special Marine Warning	BUF		63 min
Jun 23, 4:18 PM EDT	Areal Flood Advisory	BUF	Erie, Niagara	62 min
Jun 23, 5:01 PM EDT	Special Weather Statement	BUF	Genesee, Monroe	59 min
Jun 23, 7:55 PM EDT	Special Marine Warning	BUF		35 min

Nearby

Tornado Warnings in New York, 2011 Every tornado warning in 2011 Tornadoes 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.