Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 6, NWS Buffalo, NY

May 10, 2013Allegany County, Cattaraugus County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 10, 2013, 4:52 PM EDT for Allegany County, Cattaraugus 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 10, 2013, 4:52 PM EDT (20:52 UTC)
Expired: May 10, 2013, 5:45 PM EDT
In force: 53 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Allegany County, NY, Cattaraugus County, NY

The radar

The Buffalo radar (KBUF), 71 km from the middle of the area, began a volume at 20:53 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, 8.9 hours before the alert went out and 69 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.

042 
WUUS51 KBUF 102052
SVRBUF
NYC003-009-102145-
/O.NEW.KBUF.SV.W.0006.130510T2052Z-130510T2145Z/

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

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN ALLEGANY COUNTY IN WESTERN NEW YORK
  NORTHERN CATTARAUGUS COUNTY IN WESTERN NEW YORK

* UNTIL 545 PM EDT

* AT 450 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 14
  MILES SOUTHWEST OF ASHFORD...OR 8 MILES NORTHWEST OF SALAMANCA...
  AND MOVING EAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  ASHFORD...
  FRANKLINVILLE...

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 4219 7888 4226 7889 4252 7830 4252 7828
      4223 7824
TIME...MOT...LOC 2052Z 251DEG 29KT 4224 7882

$$

RSH

2 follow-up statements

264 
WWUS51 KBUF 102123
SVSBUF

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

NYC003-009-102145-
/O.CON.KBUF.SV.W.0006.000000T0000Z-130510T2145Z/
ALLEGANY NY-CATTARAUGUS NY-
523 PM EDT FRI MAY 10 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTHEASTERN CATTARAUGUS AND NORTHWESTERN ALLEGANY COUNTIES...

AT 521 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 FRANKLINVILLE...OR 15 MILES NORTHEAST OF SALAMANCA...
MOVING EAST AT 35 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  LYNDON...
  NEW HUDSON...
  CUBA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 4223 7824 4222 7869 4238 7861 4252 7830
      4252 7828
TIME...MOT...LOC 2122Z 251DEG 29KT 4232 7851

$$

JJR

784 
WWUS51 KBUF 102142
SVSBUF

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

NYC003-009-102152-
/O.EXP.KBUF.SV.W.0006.000000T0000Z-130510T2145Z/
ALLEGANY NY-CATTARAUGUS NY-
542 PM EDT FRI MAY 10 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CATTARAUGUS AND
NORTHWESTERN ALLEGANY COUNTIES WILL EXPIRE AT 545 PM EDT...

AT 542 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 HAS BEEN ALLOWED TO EXPIRE.

HOWEVER...RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY 
WINDS WERE STILL POSSIBLE FROM THIS THUNDERSTORM.

LAT...LON 4223 7824 4222 7869 4238 7861 4252 7830
      4252 7828
TIME...MOT...LOC 2142Z 251DEG 29KT 4237 7830

$$

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, 4:27 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston, Wyoming	63 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, 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.