Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 87, NWS Buffalo, NY

September 2, 2013Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 2, 2013, 12:39 PM EDT for Chautauqua County, New York. It was in force for 36 min. 11 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: Sep 2, 2013, 12:39 PM EDT (16:39 UTC)
Expired: Sep 2, 2013, 1:15 PM EDT
In force: 36 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 104 km from the middle of the area, began a volume at 16:40 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 2, 12:45 PM EDT	HAIL 0.75	1 Sw Stedman, NY	FROM WIVB.
Sep 2, 12:45 PM EDT	HAIL 0.88	1 E Bemus Point, NY	DIME AND NICKLE SIZED HAIL
Sep 2, 12:50 PM EDT	TSTM WND DMG	Lakewood, NY	TREES DOWN NEAR CHAUTAUQUA LAKE...TIME ESTIMATED...FROM WJTN
Sep 2, 12:55 PM EDT	HAIL 0.75	4 W Jamestown, NY
Sep 2, 12:57 PM EDT	HAIL 1	Maple Point, NY	FROM WIVB AT ASHVILLE.
Sep 2, 12:57 PM EDT	HAIL 1.75	Lakewood, NY	TIME ESTIMATED BASED ON RADAR
Sep 2, 1:00 PM EDT	TSTM WND DMG	Lakewood, NY	SAILBOATS IN LAKE AND ON SHORE FLIPPED... TREES AND POWER LINES DOWN AT CHAUTAUQUA LAKE YACHT CLUB
Sep 2, 1:00 PM EDT	HAIL 1	Lakewood, NY	ONE DIAMETER HAIL COVERED THE GREEN AT SUNSET VALLEY GOLF COURSE
Sep 2, 1:00 PM EDT	HAIL 1	Point Stockholm, NY	FROM WIVB.
Sep 2, 1:03 PM EDT	TSTM WND DMG	Jamestown, NY	TREES DOWN...FROM WJTN
Sep 2, 1:07 PM EDT	HAIL 1.75	Jamestown, NY	FROM WJTN

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, 4.7 hours before the alert went out and 104 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: 1277 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

813 
WUUS51 KBUF 021639
SVRBUF
NYC013-021715-
/O.NEW.KBUF.SV.W.0087.130902T1639Z-130902T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1239 PM EDT MON SEP 2 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 115 PM EDT

* AT 1235 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 5 MILES SOUTH OF CHAUTAUQUA INSTITUTE...OR 13
  MILES WEST OF JAMESTOWN...AND MOVING EAST AT 25 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  LAKEWOOD...
  JAMESTOWN WEST...
  JAMESTOWN...
  FALCONER...
  FREWSBURG...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HAIL UP TO 1 INCH IN DIAMETER HAS BEEN REPORTED AT THE CHAUTAUQUA 
INSTITUTE. IF YOU ARE IN THE PATH OF THIS STORM...TAKE IMMEDIATE 
ACTION TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 4205 7960 4222 7959 4223 7958 4224 7906
      4214 7906 4201 7907
TIME...MOT...LOC 1639Z 272DEG 23KT 4214 7946

$$

WOOD

2 follow-up statements

919 
WWUS51 KBUF 021702
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
102 PM EDT MON SEP 2 2013

NYC013-021715-
/O.CON.KBUF.SV.W.0087.000000T0000Z-130902T1715Z/
CHAUTAUQUA NY-
102 PM EDT MON SEP 2 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM EDT
FOR SOUTHERN CHAUTAUQUA COUNTY...

AT 1258 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL.  THIS STORM WAS LOCATED NEAR CELORON...OR NEAR JAMESTOWN...
MOVING EAST AT 25 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  LAKEWOOD...
  JAMESTOWN...
  FALCONER...
  FREWSBURG...

LAT...LON 4205 7960 4222 7959 4223 7958 4224 7906
      4214 7906 4201 7907
TIME...MOT...LOC 1701Z 272DEG 23KT 4213 7927

$$

WOOD

340 
WWUS51 KBUF 021714
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
114 PM EDT MON SEP 2 2013

NYC013-021722-
/O.EXP.KBUF.SV.W.0087.000000T0000Z-130902T1715Z/
CHAUTAUQUA NY-
114 PM EDT MON SEP 2 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CHAUTAUQUA COUNTY
WILL EXPIRE AT 115 PM EDT...

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE 
STILL POSSIBLE FROM THE THUNDERSTORM. A NEW WARNING HAS BEEN ISSUED 
UNTIL 145 PM FOR SOUTHEASTERN CHAUTAUQUA COUNTY INCLUDING 
JAMESTOWN...FALCONER...AND FREWSBURG AS WELL AS SOUTHWESTERN 
CATTARAUGUS COUNTY.

LAT...LON 4205 7960 4222 7959 4223 7958 4224 7906
      4214 7906 4201 7907
TIME...MOT...LOC 1712Z 272DEG 23KT 4213 7918

$$

WOOD

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 1, 8:03 PM EDT	Special Weather Statement	BUF	Allegany	57 min
Sep 1, 10:40 PM EDT	Special Weather Statement	BUF	Wayne	65 min
Sep 1, 11:43 PM EDT	Special Weather Statement	BUF	Oswego	77 min
Sep 2, 12:20 AM EDT	Severe Thunderstorm Warning	BUF	Lewis, Oswego	55 min
Sep 2, 11:06 AM EDT	Special Marine Warning	BUF		54 min
Sep 2, 11:31 AM EDT	Special Marine Warning	BUF		44 min
Sep 2, 11:52 AM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	23 min
Sep 2, 12:13 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	32 min
Sep 2, 12:51 PM EDT	Special Weather Statement	BUF	Cayuga	39 min
Sep 2, 1:11 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	34 min
Sep 2, 1:28 PM EDT	Special Weather Statement	BUF	Genesee	62 min
Sep 2, 1:35 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario, Wyoming	55 min
Sep 2, 2:01 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga	29 min
Sep 2, 2:14 PM EDT	Special Weather Statement	BUF	Cattaraugus	61 min
Sep 2, 2:37 PM EDT	Special Marine Warning	BUF		38 min
Sep 2, 2:46 PM EDT	Special Weather Statement	BUF	Cayuga	29 min
Sep 2, 3:20 PM EDT	Special Marine Warning	BUF		85 min
Sep 2, 3:31 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	59 min
Sep 2, 3:45 PM EDT	Special Marine Warning	BUF		2 hr
Sep 2, 3:59 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	61 min
Sep 2, 4:15 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	60 min
Sep 2, 4:25 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	65 min
Sep 2, 4:31 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	59 min
Sep 2, 4:32 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	43 min
Sep 2, 4:36 PM EDT	Flash Flood Warning	BUF	Cayuga, Oswego	3 hr
Sep 2, 4:39 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	51 min
Sep 2, 4:57 PM EDT	Severe Thunderstorm Warning	BUF	Lewis, Oswego	33 min
Sep 2, 4:59 PM EDT	Special Marine Warning	BUF		61 min
Sep 2, 5:24 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	36 min
Sep 2, 5:35 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	25 min
Sep 2, 5:36 PM EDT	Areal Flood Advisory	BUF	Lewis	3 hr
Sep 2, 6:24 PM EDT	Small Craft Advisory	BUF		61 hr

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.