Alert archive / New York / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 32, NWS Buffalo, NY

June 12, 2015Genesee County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 12, 2015, 4:04 PM EDT for Genesee County, New York. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 12, 2015, 4:04 PM EDT (20:04 UTC)
Expired: Jun 12, 2015, 4:30 PM EDT
In force: 26 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Genesee County, NY

The radar

The Buffalo radar (KBUF), 55 km from the middle of the area, began a volume at 20:07 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 12, 2:54 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.1 hours before the alert went out and 52 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: 1195 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 215 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.

607 
WUUS51 KBUF 122004
SVRBUF
NYC037-122030-
/O.NEW.KBUF.SV.W.0032.150612T2004Z-150612T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
404 PM EDT FRI JUN 12 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 430 PM EDT

* AT 404 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED NEAR PEMBROKE...OR NEAR DARIEN LAKES STATE PARK...AND
  MOVING EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BATAVIA...LE ROY...ATTICA...PAVILION...OAKFIELD...STAFFORD...BERGEN
  AND ELBA.

THIS INCLUDES INTERSTATE 90 BETWEEN EXITS 48 AND 47.
 
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.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT FOR WESTERN NEW
YORK.

LAT...LON 4288 7837 4307 7836 4308 7794 4306 7794
      4304 7795 4304 7793 4300 7792 4291 7795
      4290 7796 4286 7796
TIME...MOT...LOC 2004Z 271DEG 40KT 4297 7837 

$$

ZAFF

2 follow-up statements

220 
WWUS51 KBUF 122019
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
419 PM EDT FRI JUN 12 2015

NYC037-122030-
/O.CON.KBUF.SV.W.0032.000000T0000Z-150612T2030Z/
GENESEE NY-
419 PM EDT FRI JUN 12 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR CENTRAL GENESEE COUNTY...

AT 418 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED OVER BATAVIA...MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
BATAVIA...LE ROY...ATTICA...PAVILION...OAKFIELD...STAFFORD...BERGEN
AND ELBA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE. THIS IS A VERY
DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT FOR WESTERN NEW
YORK.

LAT...LON 4288 7834 4307 7827 4308 7794 4306 7794
      4304 7795 4304 7793 4300 7792 4291 7795
      4290 7796 4286 7796
TIME...MOT...LOC 2018Z 271DEG 40KT 4297 7815 

$$

ZAFF

820 
WWUS51 KBUF 122031
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
431 PM EDT FRI JUN 12 2015

NYC037-122041-
/O.EXP.KBUF.SV.W.0032.000000T0000Z-150612T2030Z/
GENESEE NY-
431 PM EDT FRI JUN 12 2015

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GENESEE COUNTY HAS
EXPIRED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE. HOWEVER GUSTY WINDS
ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4288 7834 4307 7827 4308 7794 4306 7794
      4304 7795 4304 7793 4300 7792 4291 7795
      4290 7796 4286 7796
TIME...MOT...LOC 2029Z 271DEG 40KT 4297 7815 

$$

ZAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 10:16 AM EDT	Flash Flood Watch	BUF	Allegany, Cayuga, Jefferson, Lewis, Livingston, Monroe and 3 more	8 hr
Jun 12, 2:52 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario	38 min
Jun 12, 2:59 PM EDT	Special Marine Warning	BUF		61 min
Jun 12, 3:14 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Wyoming	61 min
Jun 12, 3:20 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Wyoming	55 min
Jun 12, 3:30 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	60 min
Jun 12, 4:15 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Livingston, Wyoming	60 min
Jun 12, 4:35 PM EDT	Special Weather Statement	BUF	Ontario	55 min
Jun 12, 4:40 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario	65 min
Jun 12, 4:42 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Livingston	63 min
Jun 12, 5:20 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Ontario, Wayne	32 min
Jun 12, 5:31 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	29 min
Jun 12, 5:39 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	21 min
Jun 12, 5:40 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston, Ontario	35 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.