Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 5, NWS Buffalo, NY

May 10, 2013Cattaraugus County, Chautauqua County, Erie County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 10, 2013, 4:33 PM EDT for Cattaraugus County, Chautauqua County, Erie County, New York. It was in force for 57 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 10, 2013, 4:33 PM EDT (20:33 UTC)
Expired: May 10, 2013, 5:30 PM EDT
In force: 57 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY

The radar

The Buffalo radar (KBUF), 83 km from the middle of the area, began a volume at 20:33 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.

What was reported inside it

Time	Report	Where	Remark
May 10, 4:45 PM EDT	FUNNEL CLOUD	1 N Hartfield, NY
May 10, 5:04 PM EDT	HAIL 1	Westfield, NY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.6 hours before the alert went out and 83 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.

353 
WUUS51 KBUF 102033
SVRBUF
NYC009-013-029-102130-
/O.NEW.KBUF.SV.W.0005.130510T2033Z-130510T2130Z/

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

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CATTARAUGUS COUNTY IN WESTERN NEW YORK
  NORTHERN CHAUTAUQUA COUNTY IN WESTERN NEW YORK
  SOUTHWESTERN ERIE COUNTY IN WESTERN NEW YORK

* UNTIL 530 PM EDT

* AT 430 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 5 MILES
  SOUTHWEST OF WESTFIELD...OR 19 MILES SOUTHWEST OF FREDONIA...AND
  MOVING NORTHEAST AT 35 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  FREDONIA...
  COLLINS...

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 4229 7971 4261 7907 4248 7875 4220 7966
TIME...MOT...LOC 2033Z 240DEG 31KT 4228 7957

$$

RSH

2 follow-up statements

352 
WWUS51 KBUF 102103
SVSBUF

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

NYC009-013-029-102130-
/O.CON.KBUF.SV.W.0005.000000T0000Z-130510T2130Z/
CATTARAUGUS NY-CHAUTAUQUA NY-ERIE NY-
503 PM EDT FRI MAY 10 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR SOUTHWESTERN ERIE...NORTHEASTERN CHAUTAUQUA AND NORTHWESTERN
CATTARAUGUS COUNTIES...

AT 458 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 CASSADAGA...OR NEAR FREDONIA...MOVING NORTHEAST AT 35
MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  FORESTVILLE...
  PERRYSBURG...
  COLLINS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME 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.

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 4229 7940 4240 7947 4261 7907 4248 7875
TIME...MOT...LOC 2102Z 240DEG 31KT 4240 7928

$$

JJR

553 
WWUS51 KBUF 102110
SVSBUF

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

NYC009-013-029-102120-
/O.CAN.KBUF.SV.W.0005.000000T0000Z-130510T2130Z/
CATTARAUGUS NY-CHAUTAUQUA NY-ERIE NY-
510 PM EDT FRI MAY 10 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ERIE...
NORTHEASTERN CHAUTAUQUA AND NORTHWESTERN CATTARAUGUS COUNTIES IS
CANCELLED...

AT 510 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 CANCELLED.

LAT...LON 4229 7940 4240 7947 4261 7907 4248 7875
TIME...MOT...LOC 2110Z 240DEG 31KT 4243 7920

$$

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, 4:39 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.