Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 88, NWS Buffalo, NY

September 3, 2011Allegany County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 3, 2011, 9:04 PM EDT for Allegany County, New York. It was in force for 41 min. 1 report 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: Sep 3, 2011, 9:04 PM EDT (01:04 UTC)
Expired: Sep 3, 2011, 9:45 PM EDT
In force: 41 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Allegany County, NY

The radar

The Buffalo radar (KBUF), 122 km from the middle of the area, began a volume at 01:05 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
Sep 3, 9:10 PM EDT	TSTM WND DMG	4 Sw Wellsville, NY	TREES DOWN ACROSS ALMA HILL ROAD.

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 00:00Z, 1.1 hours before the alert went out and 118 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: 889 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 1459 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 86 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.

214 
WUUS51 KBUF 040104
SVRBUF
NYC003-040145-
/O.NEW.KBUF.SV.W.0088.110904T0104Z-110904T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
904 PM EDT SAT SEP 3 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 945 PM EDT

* AT 900 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 7 MILES
  SOUTH OF WELLSVILLE...AND MOVING EAST AT 30 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  WHITESVILLE...

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 7804 4210 7806 4219 7774 4208 7773
      4200 7775 4199 7787 4199 7801
TIME...MOT...LOC 0104Z 253DEG 26KT 4204 7787

$$

RSH

2 follow-up statements

913 
WWUS51 KBUF 040121
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
921 PM EDT SAT SEP 3 2011

NYC003-040145-
/O.CON.KBUF.SV.W.0088.000000T0000Z-110904T0145Z/
ALLEGANY NY-
921 PM EDT SAT SEP 3 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR SOUTHEASTERN ALLEGANY COUNTY...

AT 920 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 WHITESVILLE...OR 8 MILES SOUTHEAST OF WELLSVILLE...
MOVING EAST AT 30 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  SHONGO AND HALLSPORT

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 4199 7787 4200 7793 4211 7795 4219 7774
      4208 7773 4200 7775
TIME...MOT...LOC 0121Z 253DEG 26KT 4205 7779

$$

RSH

217 
WWUS51 KBUF 040139
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
939 PM EDT SAT SEP 3 2011

NYC003-040149-
/O.EXP.KBUF.SV.W.0088.000000T0000Z-110904T0145Z/
ALLEGANY NY-
939 PM EDT SAT SEP 3 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ALLEGANY COUNTY
WILL EXPIRE AT 945 PM EDT...

AT 939 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.

LAT...LON 4199 7787 4200 7793 4211 7795 4219 7774
      4208 7773 4200 7775
TIME...MOT...LOC 0139Z 253DEG 26KT 4209 7762

$$

RSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 3, 8:59 PM EDT	Special Weather Statement	BUF	Allegany	46 min
Sep 4, 3:00 AM EDT	Special Marine Warning	BUF		90 min
Sep 4, 3:21 AM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	54 min
Sep 4, 3:39 AM EDT	Special Marine Warning	BUF		81 min
Sep 4, 3:49 AM EDT	Special Marine Warning	BUF		56 min
Sep 4, 3:55 AM EDT	Special Weather Statement	BUF	Erie	65 min
Sep 4, 4:09 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	57 min
Sep 4, 4:11 AM EDT	Special Marine Warning	BUF		61 min
Sep 4, 4:41 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Monroe, Niagara, Orleans	45 min
Sep 4, 4:46 AM EDT	Special Marine Warning	BUF		70 min
Sep 4, 5:20 AM EDT	Special Weather Statement	BUF	Chautauqua	40 min
Sep 4, 6:40 AM EDT	Special Marine Warning	BUF		80 min
Sep 4, 7:31 AM EDT	Special Weather Statement	BUF	Jefferson	44 min
Sep 4, 7:57 AM EDT	Special Marine Warning	BUF		63 min
Sep 4, 3:41 PM EDT	Special Marine Warning	BUF		64 min
Sep 4, 4:53 PM EDT	Special Weather Statement	BUF	Allegany, Livingston, Ontario, Wyoming	67 min

Nearby

Severe Thunderstorm Warnings in New York, 2011 Every severe thunderstorm warning in 2011

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.