Alert archive / New York / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 42, NWS Buffalo, NY

June 23, 2015Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 23, 2015, 4:44 AM EDT for Chautauqua County, New York. It was in force for 46 min. 3 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: Jun 23, 2015, 4:44 AM EDT (08:44 UTC)
Expired: Jun 23, 2015, 5:30 AM EDT
In force: 46 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 90 km from the middle of the area, began a volume at 08:46 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
Jun 23, 5:02 AM EDT	TSTM WND DMG	Westfield, NY	LARGE TREE DOWN ON A HOUSE
Jun 23, 5:15 AM EDT	TSTM WND DMG	Arkwright, NY	TREE LIMBS AND POWERLINES DOWN
Jun 23, 5:19 AM EDT	TSTM WND DMG	Silver Creek, NY	TREE LIMBS AND POWERLINES DOWN

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, 8.7 hours before the alert went out and 90 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: 2108 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 202 m²/s²
0-3 km storm-relative helicity: 298 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.

181 
WUUS51 KBUF 230844
SVRBUF
NYC013-230930-
/O.NEW.KBUF.SV.W.0042.150623T0844Z-150623T0930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
444 AM EDT TUE JUN 23 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 530 AM EDT

* AT 443 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED NEAR NORTH EAST...OR 28 MILES WEST OF JAMESTOWN...AND
  MOVING EAST AT 70 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RIPLEY...JAMESTOWN...DUNKIRK...FREDONIA...WESTFIELD...LAKEWOOD...
  SILVER CREEK...FALCONER AND MAYVILLE.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 90 BETWEEN EXITS 61 AND 59.
 INTERSTATE 86 BETWEEN EXITS 4 AND 13.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 4227 7976 4241 7945 4249 7935 4249 7933
      4253 7925 4255 7916 4200 7918 4200 7976
TIME...MOT...LOC 0843Z 253DEG 62KT 4216 7979 

$$

HITCHCOCK

2 follow-up statements

356 
WWUS51 KBUF 230911
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
511 AM EDT TUE JUN 23 2015

NYC013-230930-
/O.CON.KBUF.SV.W.0042.000000T0000Z-150623T0930Z/
CHAUTAUQUA NY-
511 AM EDT TUE JUN 23 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 AM EDT
FOR CHAUTAUQUA COUNTY...

AT 511 AM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR LAKE
ERIE STATE PARK TO 6 MILES EAST OF CLYMER...MOVING NORTHEAST AT 60
MPH.

LOCATIONS IMPACTED INCLUDE...
JAMESTOWN...DUNKIRK...FREDONIA...WESTFIELD...LAKEWOOD...SILVER
CREEK...FALCONER AND MAYVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 4227 7976 4241 7945 4249 7935 4249 7933
      4253 7925 4255 7916 4200 7918 4200 7976
TIME...MOT...LOC 0911Z 221DEG 54KT 4239 7945 4204 7950 

$$

HITCHCOCK

686 
WWUS51 KBUF 230931
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
531 AM EDT TUE JUN 23 2015

NYC013-230940-
/O.EXP.KBUF.SV.W.0042.000000T0000Z-150623T0930Z/
CHAUTAUQUA NY-
531 AM EDT TUE JUN 23 2015

...THE SEVERE THUNDERSTORM WARNING FOR CHAUTAUQUA COUNTY HAS
EXPIRED...
    
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.

A SEPERATE SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN 
CHAUTAUQUA...CATTARAUGUS...AND SOUTHERN ERIE COUNTIES UNTIL 630 AM.

LAT...LON 4227 7976 4241 7945 4249 7935 4249 7933
      4253 7925 4255 7916 4200 7918 4200 7976
TIME...MOT...LOC 0930Z 253DEG 62KT 4239 7945 4204 7950 

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 1:13 AM EDT	Special Marine Warning	BUF		2 hr
Jun 23, 1:16 AM EDT	Special Marine Warning	BUF		119 min
Jun 23, 3:21 AM EDT	Special Marine Warning	BUF		84 min
Jun 23, 3:42 AM EDT	Special Marine Warning	BUF		63 min
Jun 23, 3:44 AM EDT	Special Marine Warning	BUF		61 min
Jun 23, 3:52 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	34 min
Jun 23, 4:24 AM EDT	Special Marine Warning	BUF		96 min
Jun 23, 4:29 AM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Orleans, Wyoming	46 min
Jun 23, 4:52 AM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario, Wayne	53 min
Jun 23, 5:27 AM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	63 min
Jun 23, 6:02 AM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	58 min

Nearby

Severe Thunderstorm Warnings in New York, 2015 Every severe thunderstorm warning in 2015

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.