Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 13, NWS Buffalo, NY

May 15, 2013Niagara County, Orleans County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 15, 2013, 8:11 AM EDT for Niagara County, Orleans County, New York. It was in force for 49 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 15, 2013, 8:11 AM EDT (12:11 UTC)
Expired
May 15, 2013, 9:00 AM EDT
In force
49 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Niagara County, NY, Orleans County, NY

The radar

The Buffalo radar (KBUF), 56 km from the middle of the area, began a volume at 12:14 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, 0.2 hours before the alert went out and 56 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 12:00Z on 2013-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2013-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 221 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1413 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
221 m²/s²
0-3 km storm-relative helicity
394 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.

156 
WUUS51 KBUF 151211
SVRBUF
NYC063-073-151300-
/O.NEW.KBUF.SV.W.0013.130515T1211Z-130515T1300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
811 AM EDT WED MAY 15 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME NORTHEASTERN NIAGARA COUNTY IN WESTERN NEW YORK
  NORTHERN ORLEANS COUNTY IN WESTERN NEW YORK

* UNTIL 900 AM EDT

* AT 808 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 28 MILES NORTHWEST OF WATERPORT...OR 22 MILES
  NORTH OF LOCKPORT...AND MOVING EAST AT 55 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  THIRTY MILE POINT

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO HAIL..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 4338 7854 4338 7801 4337 7799 4328 7799
      4336 7864 4337 7863
TIME...MOT...LOC 1211Z 274DEG 46KT 4348 7870

$$

REYNOLDS
1 follow-up statement
109 
WWUS51 KBUF 151214
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
814 AM EDT WED MAY 15 2013

NYC063-073-151223-
/O.CAN.KBUF.SV.W.0013.000000T0000Z-130515T1300Z/
NIAGARA NY-ORLEANS NY-
814 AM EDT WED MAY 15 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ORLEANS AND EXTREME
NORTHEASTERN NIAGARA COUNTIES IS CANCELLED...

THIS WARNING WAS SENT IN ERROR.

LAT...LON 4338 7854 4338 7801 4337 7799 4328 7799
      4336 7864 4337 7863
TIME...MOT...LOC 1213Z 274DEG 46KT 4341 7868

$$

ZAFF

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 9:13 AM EDTSpecial Weather StatementBUFOntario47 min
May 15, 3:41 PM EDTSmall Craft AdvisoryBUF26 hr

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.