Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 27, NWS Buffalo, NY

May 21, 2013Ontario County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 21, 2013, 9:14 PM EDT for Ontario County, Wayne County, New York. It was in force for 31 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 21, 2013, 9:14 PM EDT (01:14 UTC)
Expired: May 21, 2013, 9:45 PM EDT
In force: 31 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Ontario County, NY, Wayne County, NY

The radar

The Binghamton radar (KBGM), 119 km from the middle of the area, began a volume at 01:15 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
May 21, 1:40 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.2 hours before the alert went out and 140 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: 269 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1704 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

256 
WUUS51 KBUF 220114
SVRBUF
NYC069-117-220145-
/O.NEW.KBUF.SV.W.0027.130522T0114Z-130522T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
914 PM EDT TUE MAY 21 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ONTARIO COUNTY IN WESTERN NEW YORK
  SOUTHEASTERN WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 945 PM EDT

* AT 909 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR CLIFTON SPRINGS...OR 7
  MILES NORTHEAST OF CANANDAIGUA...AND MOVING EAST AT 40 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  PHELPS...
  LYONS...
  CLYDE...
  THE NEW YORK STATE THRUWAY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT 
WEDNESDAY MORNING FOR CENTRAL NEW YORK.

&&

LAT...LON 4288 7727 4306 7729 4311 7671 4307 7670
      4303 7672 4301 7695 4287 7695 4286 7697
TIME...MOT...LOC 0113Z 264DEG 36KT 4298 7715

$$

HIBBERT

3 follow-up statements

548 
WWUS51 KBUF 220129
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
929 PM EDT TUE MAY 21 2013

NYC069-117-220145-
/O.CON.KBUF.SV.W.0027.000000T0000Z-130522T0145Z/
ONTARIO NY-WAYNE NY-
929 PM EDT TUE MAY 21 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR SOUTHEASTERN WAYNE AND NORTHEASTERN ONTARIO COUNTIES...

AT 924 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR PHELPS...OR 9 MILES
NORTH OF GENEVA...MOVING EAST AT 40 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  SAVANNAH...
  CLYDE...
  PHELPS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
WEDNESDAY MORNING FOR CENTRAL NEW YORK.

&&

LAT...LON 4288 7720 4307 7710 4308 7709 4311 7672
      4310 7671 4308 7670 4303 7673 4301 7695
      4288 7695 4286 7697
TIME...MOT...LOC 0128Z 264DEG 36KT 4300 7694

$$

HIBBERT

528 
WWUS51 KBUF 220137
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
937 PM EDT TUE MAY 21 2013

NYC069-220147-
/O.CAN.KBUF.SV.W.0027.000000T0000Z-130522T0145Z/
ONTARIO NY-
937 PM EDT TUE MAY 21 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ONTARIO COUNTY IS
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
WEDNESDAY MORNING FOR CENTRAL NEW YORK.

LAT...LON 4301 7695 4309 7691 4311 7672 4310 7671
      4307 7670 4303 7673
TIME...MOT...LOC 0137Z 264DEG 36KT 4301 7681

$$

NYC117-220145-
/O.CON.KBUF.SV.W.0027.000000T0000Z-130522T0145Z/
WAYNE NY-
937 PM EDT TUE MAY 21 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR SOUTHEASTERN WAYNE COUNTY...

AT 932 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED
NEAR CLYDE...OR 7 MILES NORTH OF WATERLOO...MOVING EAST AT 40 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  CLYDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
WEDNESDAY MORNING FOR CENTRAL NEW YORK.

&&

LAT...LON 4301 7695 4309 7691 4311 7672 4310 7671
      4307 7670 4303 7673
TIME...MOT...LOC 0137Z 264DEG 36KT 4301 7681

$$

HIBBERT

839 
WWUS51 KBUF 220146
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
946 PM EDT TUE MAY 21 2013

NYC117-220155-
/O.EXP.KBUF.SV.W.0027.000000T0000Z-130522T0145Z/
WAYNE NY-
946 PM EDT TUE MAY 21 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WAYNE COUNTY HAS
EXPIRED...

AT 945 PM 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...ALTHOUGH 
ANOTHER WARNING REMAINS IN EFFECT FOR EASTERN WAYNE AND NORTHERN 
CAYUGA COUNTIES UNTIL 1000 PM EDT.

LAT...LON 4301 7695 4309 7691 4311 7672 4310 7671
      4307 7670 4303 7673
TIME...MOT...LOC 0137Z 264DEG 36KT 4301 7681

$$

HIBBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 8:58 PM EDT	Special Weather Statement	BUF	Ontario, Wayne	62 min
May 21, 9:35 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Wayne	25 min
May 21, 10:56 PM EDT	Special Weather Statement	BUF	Lewis	64 min
May 22, 2:19 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Wayne	41 min
May 22, 2:24 PM EDT	Special Marine Warning	BUF		66 min
May 22, 3:14 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	61 min
May 22, 3:32 PM EDT	Special Marine Warning	BUF		58 min
May 22, 4:16 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	59 min
May 22, 6:14 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	61 min
May 22, 7:09 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	36 min
May 22, 7:58 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Monroe, Orleans	32 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.