Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 38, NWS Buffalo, NY

May 23, 2013Allegany County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 23, 2013, 4:44 PM EDT for Allegany County, New York. It was in force for 61 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 23, 2013, 4:44 PM EDT (20:44 UTC)
Expired: May 23, 2013, 5:45 PM EDT
In force: 61 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Allegany County, NY

The radar

The Buffalo radar (KBUF), 116 km from the middle of the area, began a volume at 20:45 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 23, 4:50 PM EDT	HAIL 1.5	3 Ssw Bolivar, NY
May 23, 4:52 PM EDT	TSTM WND DMG	2 S Bolivar, NY	LARGE TREE DOWN ON A HOUSE.

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, 8.7 hours before the alert went out and 113 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: 369 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 500 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 45 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.

592 
WUUS51 KBUF 232044
SVRBUF
NYC003-232145-
/O.NEW.KBUF.SV.W.0038.130523T2044Z-130523T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
444 PM EDT THU MAY 23 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN ALLEGANY COUNTY IN WESTERN NEW YORK

* UNTIL 545 PM EDT

* AT 441 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 17
  MILES SOUTHWEST OF WELLSVILLE...OR 10 MILES SOUTHEAST OF OLEAN...
  AND MOVING EAST AT 30 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  LITTLE GENESEE...
  STANNARDS...
  ALMA...
  WELLSVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS 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 4200 7831 4210 7830 4228 7773 4208 7773
      4200 7774 4199 7775
TIME...MOT...LOC 2044Z 252DEG 25KT 4203 7823

$$

HITCHCOCK

2 follow-up statements

576 
WWUS51 KBUF 232109
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
509 PM EDT THU MAY 23 2013

NYC003-232145-
/O.CON.KBUF.SV.W.0038.000000T0000Z-130523T2145Z/
ALLEGANY NY-
509 PM EDT THU MAY 23 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR SOUTHERN ALLEGANY COUNTY...

AT 508 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 WELLSVILLE...MOVING EAST AT 30 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  STANNARDS...
  ANDOVER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS 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 4200 7831 4210 7830 4228 7773 4208 7773
      4200 7774 4199 7775
TIME...MOT...LOC 2109Z 253DEG 27KT 4210 7798

$$

HITCHCOCK

372 
WWUS51 KBUF 232133
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
533 PM EDT THU MAY 23 2013

NYC003-232143-
/O.CAN.KBUF.SV.W.0038.000000T0000Z-130523T2145Z/
ALLEGANY NY-
533 PM EDT THU MAY 23 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ALLEGANY COUNTY IS
CANCELLED...

AT 533 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 4200 7831 4210 7830 4228 7773 4208 7773
      4200 7774 4199 7775
TIME...MOT...LOC 2133Z 253DEG 27KT 4215 7775

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 8:08 PM EDT	Special Marine Warning	BUF		52 min
May 22, 8:31 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	29 min
May 22, 8:57 PM EDT	Special Marine Warning	BUF		93 min
May 22, 9:13 PM EDT	Special Marine Warning	BUF		62 min
May 22, 9:33 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Jefferson, Lewis, Oswego, Wayne	57 min
May 22, 10:14 PM EDT	Special Marine Warning	BUF		91 min
May 23, 4:42 AM EDT	Small Craft Advisory	BUF		4 days
May 23, 10:55 AM EDT	Special Weather Statement	BUF	Wayne	65 min
May 23, 11:27 AM EDT	Special Marine Warning	BUF		63 min
May 23, 11:36 AM EDT	Special Marine Warning	BUF		54 min
May 23, 11:57 AM EDT	Special Weather Statement	BUF	Oswego	63 min
May 23, 12:28 PM EDT	Special Weather Statement	BUF	Jefferson	62 min
May 23, 12:41 PM EDT	Special Weather Statement	BUF	Oswego	64 min
May 23, 12:56 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	64 min
May 23, 4:33 PM EDT	Special Weather Statement	BUF	Allegany	57 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.