Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 3, NWS Buffalo, NY

April 26, 2011Genesee County, Monroe County, Orleans County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Apr 26, 2011, 4:43 PM EDT for Genesee County, Monroe County, Orleans County, New York. It was in force for 47 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: Apr 26, 2011, 4:43 PM EDT (20:43 UTC)
Expired: Apr 26, 2011, 5:30 PM EDT
In force: 47 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Genesee County, NY, Monroe County, NY, Orleans County, NY

The radar

The Buffalo radar (KBUF), 66 km from the middle of the area, began a volume at 20:46 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.

Issued	Product	Office	Lasted
Apr 26, 1:49 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.7 hours before the alert went out and 64 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 493 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 237 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

650 
WUUS51 KBUF 262043
SVRBUF
NYC037-055-073-262130-
/O.NEW.KBUF.SV.W.0003.110426T2043Z-110426T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
443 PM EDT TUE APR 26 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GENESEE COUNTY IN WESTERN NEW YORK
  NORTHWESTERN MONROE COUNTY IN WESTERN NEW YORK
  EASTERN ORLEANS COUNTY IN WESTERN NEW YORK

* UNTIL 530 PM EDT

* AT 442 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
  BATAVIA...AND MOVING NORTHEAST AT 50 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  BYRON...
  HOLLEY...
  BROCKPORT...
  HILTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. 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.

&&

LAT...LON 4299 7840 4338 7797 4336 7787 4335 7776
      4333 7771 4329 7766 4287 7821
TIME...MOT...LOC 2043Z 220DEG 42KT 4300 7823

$$

JJR

1 follow-up statement

908 
WWUS51 KBUF 262103
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
503 PM EDT TUE APR 26 2011

NYC037-262112-
/O.CAN.KBUF.SV.W.0003.000000T0000Z-110426T2130Z/
GENESEE NY-
503 PM EDT TUE APR 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR GENESEE COUNTY IS CANCELLED...

THE STORM HAS EXITED TO THE NORTH OF GENESEE COUNTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR WESTERN NEW YORK.

LAT...LON 4315 7816 4338 7797 4336 7787 4335 7776
      4333 7771 4329 7766 4313 7787
TIME...MOT...LOC 2102Z 220DEG 42KT 4317 7803

$$

NYC055-073-262130-
/O.CON.KBUF.SV.W.0003.000000T0000Z-110426T2130Z/
ORLEANS NY-MONROE NY-
503 PM EDT TUE APR 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR NORTHWESTERN MONROE AND EASTERN ORLEANS COUNTIES...

AT 501 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 HOLLEY...OR 6 MILES SOUTHWEST OF BROCKPORT...MOVING
NORTHEAST AT 45 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  BROCKPORT...
  HILTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4315 7816 4338 7797 4336 7787 4335 7776
      4333 7771 4329 7766 4313 7787
TIME...MOT...LOC 2102Z 220DEG 42KT 4317 7803

$$

APFFEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 8:36 PM EDT	Areal Flood Advisory	BUF	Chautauqua, Erie, Genesee	6 hr
Apr 26, 3:07 AM EDT	River Flood Warning	BUF	Erie, Wyoming	3 hr
Apr 26, 3:07 AM EDT	River Flood Warning	BUF	Erie	3 hr
Apr 26, 3:41 AM EDT	Small Craft Advisory	BUF		18 hr
Apr 26, 12:59 PM EDT	Special Weather Statement	BUF	Allegany	31 min
Apr 26, 2:00 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	45 min
Apr 26, 2:26 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Ontario, Oswego, Wayne	49 min
Apr 26, 3:53 PM EDT	Special Weather Statement	BUF	Oswego	52 min
Apr 26, 4:44 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	46 min
Apr 26, 4:50 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	55 min
Apr 26, 4:53 PM EDT	Special Marine Warning	BUF		58 min
Apr 26, 5:05 PM EDT	Severe Thunderstorm Warning	BUF	Lewis, Oswego	40 min
Apr 26, 5:27 PM EDT	Flash Flood Warning	BUF	Allegany	5 hr
Apr 26, 5:40 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Ontario, Wayne	50 min
Apr 26, 5:46 PM EDT	Special Weather Statement	BUF	Lewis	59 min
Apr 26, 5:49 PM EDT	Special Marine Warning	BUF		86 min
Apr 26, 6:14 PM EDT	Special Weather Statement	BUF	Allegany	61 min
Apr 26, 6:19 PM EDT	Areal Flood Advisory	BUF	Ontario, Wayne	2 hr
Apr 26, 6:22 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	38 min
Apr 26, 7:10 PM EDT	Flash Flood Warning	BUF	Ontario, Wayne	3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.