Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 20, NWS Buffalo, NY

May 26, 2011Jefferson County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 26, 2011, 10:22 AM EDT for Jefferson County, New York. It was in force for 53 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 26, 2011, 10:22 AM EDT (14:22 UTC)
Expired: May 26, 2011, 11:15 AM EDT
In force: 53 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Jefferson County, NY

The radar

The Ft Drum radar (KTYX), 40 km from the middle of the area, began a volume at 14:22 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

Albany, NY (KALY), launched 12:00Z, 2.4 hours before the alert went out and 231 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: 1004 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 274 m²/s²
0-3 km storm-relative helicity: 327 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

532 
WUUS51 KBUF 261422
SVRBUF
NYC045-261515-
/O.NEW.KBUF.SV.W.0020.110526T1422Z-110526T1515Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1022 AM EDT THU MAY 26 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN JEFFERSON COUNTY IN CENTRAL NEW YORK

* UNTIL 1115 AM EDT

* AT 1017 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 17     
  MILES WEST OF WATERTOWN...AND MOVING NORTHEAST AT 50 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  PERCH RIVER...
  LA FARGEVILLE...
  THERESA...

LAT...LON 4422 7545 4415 7551 4391 7613 4392 7614
      4388 7623 4389 7624 4391 7622 4390 7619
      4393 7615 4398 7622 4395 7628 4406 7632
      4438 7579
TIME...MOT...LOC 1421Z 235DEG 44KT 4400 7619

$$

ZAFF

2 follow-up statements

844 
WWUS51 KBUF 261444
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1044 AM EDT THU MAY 26 2011

NYC045-261515-
/O.CON.KBUF.SV.W.0020.000000T0000Z-110526T1515Z/
JEFFERSON NY-
1044 AM EDT THU MAY 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM EDT
FOR NORTHEASTERN JEFFERSON COUNTY...

AT 1042 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 EVANS MILLS...MOVING NORTHEAST AT 50 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  PHILADELPHIA...
  ANTWERP...

LAT...LON 4415 7551 4401 7593 4410 7600 4434 7570
      4422 7545
TIME...MOT...LOC 1443Z 240DEG 42KT 4411 7589

$$

ZAFF

725 
WWUS51 KBUF 261512
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1112 AM EDT THU MAY 26 2011

NYC045-261522-
/O.EXP.KBUF.SV.W.0020.000000T0000Z-110526T1515Z/
JEFFERSON NY-
1112 AM EDT THU MAY 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JEFFERSON COUNTY
WILL EXPIRE AT 1115 AM EDT...

AT 1112 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.

LAT...LON 4415 7551 4401 7593 4410 7600 4434 7570
      4422 7545
TIME...MOT...LOC 1512Z 240DEG 42KT 4428 7548

$$

ZAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 8:28 PM EDT	Special Weather Statement	BUF	Chautauqua	62 min
May 25, 9:01 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	59 min
May 25, 9:03 PM EDT	Special Marine Warning	BUF		57 min
May 25, 9:41 PM EDT	Areal Flood Advisory	BUF	Erie, Genesee, Niagara, Orleans, Wyoming	3 hr
May 25, 9:46 PM EDT	Special Marine Warning	BUF		44 min
May 25, 10:11 PM EDT	Areal Flood Advisory	BUF	Cattaraugus, Chautauqua	3 hr
May 25, 10:14 PM EDT	Special Marine Warning	BUF		31 min
May 26, 7:03 AM EDT	Special Weather Statement	BUF	Genesee, Monroe, Niagara, Orleans	57 min
May 26, 2:56 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	64 min
May 26, 3:20 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	40 min
May 26, 3:37 PM EDT	Small Craft Advisory	BUF		19 hr
May 26, 5:30 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	60 min
May 26, 5:43 PM EDT	Tornado Warning	BUF	Chautauqua	32 min
May 26, 6:08 PM EDT	Tornado Warning	BUF	Cattaraugus, Chautauqua	38 min
May 26, 7:04 PM EDT	Special Weather Statement	BUF	Genesee, Monroe	56 min
May 26, 7:05 PM EDT	Areal Flood Advisory	BUF	Chautauqua	3 hr
May 26, 7:24 PM EDT	Special Marine Warning	BUF		51 min
May 26, 7:38 PM EDT	Special Marine Warning	BUF		54 min
May 26, 7:55 PM EDT	Special Weather Statement	BUF	Lewis	65 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.