Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 4, NWS Buffalo, NY

May 10, 2013Allegany County, Livingston County, Wyoming County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 10, 2013, 4:27 PM EDT for Allegany County, Livingston County, Wyoming County, New York. It was in force for 63 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 10, 2013, 4:27 PM EDT (20:27 UTC)
Expired: May 10, 2013, 5:30 PM EDT
In force: 63 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Allegany County, NY, Livingston County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 85 km from the middle of the area, began a volume at 20:28 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 12:00Z, 8.5 hours before the alert went out and 82 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: 2256 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

059 
WUUS51 KBUF 102027
SVRBUF
NYC003-051-121-102130-
/O.NEW.KBUF.SV.W.0004.130510T2027Z-130510T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
427 PM EDT FRI MAY 10 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL ALLEGANY COUNTY IN WESTERN NEW YORK
  LIVINGSTON COUNTY IN WESTERN NEW YORK
  SOUTHEASTERN WYOMING COUNTY IN WESTERN NEW YORK

* UNTIL 530 PM EDT

* AT 423 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
  HOUGHTON...OR 27 MILES NORTHWEST OF WELLSVILLE...AND MOVING
  NORTHEAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  PORTAGEVILLE...
  GROVELAND...
  CONESUS...
  HEMLOCK...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

&&

LAT...LON 4241 7816 4253 7826 4289 7761 4257 7763
      4257 7766 4254 7766 4253 7771 4251 7772
TIME...MOT...LOC 2027Z 241DEG 31KT 4247 7819

$$

RSH

3 follow-up statements

496 
WWUS51 KBUF 102057 RRA
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
457 PM EDT FRI MAY 10 2013

NYC121-102107-
/O.CAN.KBUF.SV.W.0004.000000T0000Z-130510T2130Z/
WYOMING NY-
457 PM EDT FRI MAY 10 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WYOMING COUNTY IS
CANCELLED...

LAT...LON 4248 7798 4257 7802 4281 7762 4257 7763
      4257 7766 4254 7766 4253 7771 4251 7772
TIME...MOT...LOC 2057Z 241DEG 31KT 4255 7788

$$

NYC003-051-102130-
/O.CON.KBUF.SV.W.0004.000000T0000Z-130510T2130Z/
ALLEGANY NY-LIVINGSTON NY-
457 PM EDT FRI MAY 10 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR SOUTHERN LIVINGSTON AND NORTH CENTRAL ALLEGANY COUNTIES...

AT 455 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 NUNDA...OR 12 MILES WEST OF DANSVILLE...MOVING NORTHEAST
AT 35 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  OSSIAN CENTER...
  GROVELAND...
  CONESUS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

&&

LAT...LON 4248 7798 4257 7802 4281 7762 4257 7763
      4257 7766 4254 7766 4253 7771 4251 7772
TIME...MOT...LOC 2057Z 241DEG 31KT 4255 7788

$$

RSH

069 
WWUS51 KBUF 102115
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
515 PM EDT FRI MAY 10 2013

NYC003-102125-
/O.CAN.KBUF.SV.W.0004.000000T0000Z-130510T2130Z/
ALLEGANY NY-
515 PM EDT FRI MAY 10 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL ALLEGANY COUNTY
IS CANCELLED...

LAT...LON 4253 7782 4261 7786 4272 7763 4257 7763
      4257 7766 4254 7766 4253 7771 4251 7772
TIME...MOT...LOC 2115Z 241DEG 31KT 4260 7772

$$

NYC051-102130-
/O.CON.KBUF.SV.W.0004.000000T0000Z-130510T2130Z/
LIVINGSTON NY-
515 PM EDT FRI MAY 10 2013

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

AT 511 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
 THIS STORM WAS LOCATED NEAR DANSVILLE...MOVING NORTHEAST AT 35 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  RURAL LIVINGSTON COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4253 7782 4261 7786 4272 7763 4257 7763
      4257 7766 4254 7766 4253 7771 4251 7772
TIME...MOT...LOC 2115Z 241DEG 31KT 4260 7772

$$

RSH

543 
WWUS51 KBUF 102128
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
528 PM EDT FRI MAY 10 2013

NYC051-102138-
/O.EXP.KBUF.SV.W.0004.000000T0000Z-130510T2130Z/
LIVINGSTON NY-
528 PM EDT FRI MAY 10 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL LIVINGSTON
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 IS BEING ALLOWED TO EXPIRE.

LAT...LON 4253 7782 4261 7786 4272 7763 4257 7763
      4257 7766 4254 7766 4253 7771 4251 7772
TIME...MOT...LOC 2128Z 241DEG 31KT 4265 7759

$$

JJR

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 2:48 PM EDT	Special Weather Statement	BUF	Cattaraugus	42 min
May 10, 3:47 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	43 min
May 10, 4:06 PM EDT	Special Marine Warning	BUF		54 min
May 10, 4:21 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Orleans, Wyoming	54 min
May 10, 4:22 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	38 min
May 10, 4:33 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	57 min
May 10, 4:39 PM EDT	Tornado Warning	BUF	Chautauqua	36 min
May 10, 4:52 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	53 min
May 10, 5:06 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans	24 min
May 10, 5:29 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus	46 min
May 10, 5:34 PM EDT	Special Marine Warning	BUF		26 min
May 10, 5:35 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	55 min
May 10, 5:51 PM EDT	Special Marine Warning	BUF		54 min
May 10, 6:02 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus	28 min
May 10, 6:08 PM EDT	Areal Flood Advisory	BUF	Erie, Genesee, Niagara, Orleans	3 hr
May 10, 6:21 PM EDT	Areal Flood Advisory	BUF	Cattaraugus, Chautauqua	3 hr
May 10, 6:28 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	47 min
May 10, 6:30 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus	45 min
May 10, 7:34 PM EDT	Special Marine Warning	BUF		41 min
May 10, 7:38 PM EDT	Special Weather Statement	BUF	Oswego	67 min
May 10, 7:49 PM EDT	Special Weather Statement	BUF	Erie, Wyoming	56 min

Nearby

Severe Thunderstorm Warnings in New York, 2013 Every severe thunderstorm warning in 2013

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.