Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 4, NWS Buffalo, NY

April 26, 2011Monroe County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Apr 26, 2011, 4:44 PM EDT for Monroe County, New York. It was in force for 46 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, 4:44 PM EDT (20:44 UTC)
Expired: Apr 26, 2011, 5:30 PM EDT
In force: 46 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Monroe County, NY

The radar

The Buffalo radar (KBUF), 89 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 87 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.

239 
WUUS51 KBUF 262044
SVRBUF
NYC055-262130-
/O.NEW.KBUF.SV.W.0004.110426T2044Z-110426T2130Z/

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

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL MONROE 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    
  SCOTTSVILLE...OR 8 MILES SOUTHWEST OF GATES-NORTH GATES...AND      
  MOVING NORTHEAST AT 45 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  GATES-NORTH GATES...
  ROCHESTER...
  IRONDEQUOIT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4306 7791 4330 7770 4324 7755 4327 7737
      4318 7738 4299 7776 4299 7777
TIME...MOT...LOC 2044Z 222DEG 39KT 4308 7777

$$

APFFEL

2 follow-up statements

229 
WWUS51 KBUF 262108
SVSBUF

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

NYC055-262130-
/O.CON.KBUF.SV.W.0004.000000T0000Z-110426T2130Z/
MONROE NY-
508 PM EDT TUE APR 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR CENTRAL MONROE COUNTY...

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 IRONDEQUOIT...MOVING NORTHEAST AT 45 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  NORTHERN MONROE COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4313 7785 4329 7769 4324 7755 4327 7738
      4323 7737 4318 7738 4311 7763 4311 7775
TIME...MOT...LOC 2106Z 222DEG 39KT 4326 7755

$$

APFFEL

382 
WWUS51 KBUF 262128
SVSBUF

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

NYC055-262138-
/O.EXP.KBUF.SV.W.0004.000000T0000Z-110426T2130Z/
MONROE NY-
528 PM EDT TUE APR 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MONROE COUNTY WILL
EXPIRE AT 530 PM EDT...

AT 528 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO LONGER
SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

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

LAT...LON 4313 7785 4329 7769 4324 7755 4327 7738
      4323 7737 4318 7738 4311 7763 4311 7775
TIME...MOT...LOC 2128Z 222DEG 39KT 4344 7733

$$

JJR

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, 4:43 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Monroe, Orleans	47 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.