Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 28, NWS Buffalo, NY

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

NWS Buffalo, NY issued this severe thunderstorm warning at May 21, 2013, 9:35 PM EDT for Cayuga County, Wayne County, New York. It was in force for 25 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, 9:35 PM EDT (01:35 UTC)
Expired
May 21, 2013, 10:00 PM EDT
In force
25 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Cayuga County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 102 km from the middle of the area, began a volume at 01:36 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.

IssuedProductOfficeLasted
May 21, 1:40 PM EDTSevere Thunderstorm WatchSPC10 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.6 hours before the alert went out and 173 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 00:00Z on 2013-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 269 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2013-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

140 
WUUS51 KBUF 220135
SVRBUF
NYC011-117-220200-
/O.NEW.KBUF.SV.W.0028.130522T0135Z-130522T0200Z/

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

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL CAYUGA COUNTY IN CENTRAL NEW YORK
  EASTERN WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 1000 PM EDT

* AT 932 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 5 MILES EAST OF CLYDE...OR 7
  MILES NORTHWEST OF MONTEZUMA...AND MOVING EAST AT 40 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  CATO...
  WEEDSPORT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4310 7649 4303 7649 4303 7660 4302 7660
      4301 7687 4326 7690 4325 7648 4321 7647
      4312 7648
TIME...MOT...LOC 0135Z 269DEG 34KT 4311 7673

$$

HIBBERT
2 follow-up statements
732 
WWUS51 KBUF 220149
SVSBUF

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

NYC117-220158-
/O.CAN.KBUF.SV.W.0028.000000T0000Z-130522T0200Z/
WAYNE NY-
949 PM EDT TUE MAY 21 2013

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WAYNE COUNTY IS
CANCELLED...

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

LAT...LON 4310 7649 4303 7649 4302 7662 4303 7671
      4318 7670 4318 7671 4326 7671 4325 7648
      4321 7647
TIME...MOT...LOC 0148Z 269DEG 34KT 4311 7656

$$

NYC011-220200-
/O.CON.KBUF.SV.W.0028.000000T0000Z-130522T0200Z/
CAYUGA NY-
949 PM EDT TUE MAY 21 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR NORTH CENTRAL CAYUGA COUNTY...

AT 944 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 CONQUEST...OR 8 MILES
NORTHEAST OF MONTEZUMA...MOVING EAST AT 40 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  CATO...
  MERIDIAN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4310 7649 4303 7649 4302 7662 4303 7671
      4318 7670 4318 7671 4326 7671 4325 7648
      4321 7647
TIME...MOT...LOC 0148Z 269DEG 34KT 4311 7656

$$

HIBBERT
443 
WWUS51 KBUF 220200
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1000 PM EDT TUE MAY 21 2013

NYC011-220211-
/O.EXP.KBUF.SV.W.0028.000000T0000Z-130522T0200Z/
CAYUGA NY-
1000 PM EDT TUE MAY 21 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CAYUGA COUNTY
HAS EXPIRED...

AT 1001 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.

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

LAT...LON 4310 7649 4303 7649 4302 7662 4303 7671
      4318 7670 4318 7671 4326 7671 4325 7648
      4321 7647
TIME...MOT...LOC 0149Z 269DEG 34KT 4311 7655

$$

HIBBERT

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 8:58 PM EDTSpecial Weather StatementBUFOntario, Wayne62 min
May 21, 9:14 PM EDTSevere Thunderstorm WarningBUFOntario, Wayne31 min
May 21, 10:56 PM EDTSpecial Weather StatementBUFLewis64 min
May 22, 2:19 PM EDTSevere Thunderstorm WarningBUFMonroe, Wayne41 min
May 22, 2:24 PM EDTSpecial Marine WarningBUF66 min
May 22, 3:14 PM EDTSevere Thunderstorm WarningBUFCayuga, Oswego, Wayne61 min
May 22, 3:32 PM EDTSpecial Marine WarningBUF58 min
May 22, 4:16 PM EDTSevere Thunderstorm WarningBUFOswego59 min
May 22, 6:14 PM EDTSevere Thunderstorm WarningBUFCayuga, Oswego61 min
May 22, 7:09 PM EDTSevere Thunderstorm WarningBUFOswego36 min
May 22, 7:58 PM EDTSevere Thunderstorm WarningBUFGenesee, Monroe, Orleans32 min

Nearby

Severe Thunderstorm Warnings in New York, 2013Every 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.