Alert archive / New York / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 22, NWS Buffalo, NY

June 10, 2015Genesee County, Monroe County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 10, 2015, 8:56 PM EDT for Genesee County, Monroe County, New York. It was in force for 49 min. 15 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 10, 2015, 8:56 PM EDT (00:56 UTC)
Expired: Jun 10, 2015, 9:45 PM EDT
In force: 49 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Genesee County, NY, Monroe County, NY

The radar

The Buffalo radar (KBUF), 90 km from the middle of the area, began a volume at 00:59 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 10, 9:01 PM EDT	TSTM WND DMG	Ogden Center, NY	NUMEROUS REPORTS OF TREES AND POWERLINES DOWN
Jun 10, 9:04 PM EDT	TSTM WND DMG	Gates, NY	LARGE TREE DOWN
Jun 10, 9:04 PM EDT	TSTM WND DMG	Rochester, NY	NUMEROUS TREES AND POWERLINES DOWN
Jun 10, 9:15 PM EDT	TSTM WND DMG	Chili Center, NY	NUMEROUS REPORTS OF TREES AND POWERLINES DOWN
Jun 10, 9:21 PM EDT	TSTM WND GST 58	Rochester Airport, NY
Jun 10, 9:23 PM EDT	TSTM WND DMG	2 N Henrietta, NY	TREE AND LIGHT POLE DOWNED AT THE DOUBLE TREE HOTEL
Jun 10, 9:26 PM EDT	TSTM WND DMG	Henrietta, NY	LARGE TREE DOWN ON PARKED CAR IN A DRIVEWAY
Jun 10, 9:26 PM EDT	TSTM WND DMG	Henrietta, NY	TRAFFIC SIGNAL BLOWN DOWN ON EAST HENRIETTA RD
Jun 10, 9:26 PM EDT	TSTM WND DMG	Rochester, NY	NUMEROUS TREES AND POWERLINES DOWN
Jun 10, 9:28 PM EDT	TSTM WND DMG	Henrietta, NY	ROOF DAMAGE AT A GROCERY STORE
Jun 10, 9:31 PM EDT	TSTM WND DMG	Pittsford, NY	TREE DOWN AT SOUTH MAIN AND MILE POST LN AND A TRANSFORMER DAMAGED.
Jun 10, 9:31 PM EDT	TSTM WND DMG	Pittsford, NY	TREES AND A TRANSFORMER DOWN
Jun 10, 9:36 PM EDT	TSTM WND DMG	1 Nw Fairport, NY	NUMEROUS REPORTS OF TREES AND WIRES DOWN
Jun 10, 9:36 PM EDT	HAIL 1	Fairport, NY
Jun 10, 9:38 PM EDT	TSTM WND DMG	Bushnell Basin, NY	LARGE TREE DOWN ACROSS 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, 0.9 hours before the alert went out and 88 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: 466 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 1597 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

152 
WUUS51 KBUF 110056
SVRBUF
NYC037-055-110145-
/O.NEW.KBUF.SV.W.0022.150611T0056Z-150611T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
856 PM EDT WED JUN 10 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 945 PM EDT

* AT 855 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED NEAR CHURCHVILLE...OR NEAR
  BROCKPORT...AND MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SPENCERPORT ROCHESTER...GREECE...IRONDEQUOIT...CHILI...BROCKPORT...EAST
  ROCHESTER...WEBSTER AND FAIRPORT.

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 4307 7800 4323 7800 4329 7766 4323 7755
      4327 7742 4327 7738 4304 7737
TIME...MOT...LOC 0055Z 264DEG 45KT 4315 7792 

$$

HITCHCOCK

1 follow-up statement

174 
WWUS51 KBUF 110119
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
919 PM EDT WED JUN 10 2015

NYC037-110127-
/O.CAN.KBUF.SV.W.0022.000000T0000Z-150611T0145Z/
GENESEE NY-
919 PM EDT WED JUN 10 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GENESEE COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED EAST OF 
GENESEE COUNTY...THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4307 7788 4320 7785 4323 7761 4323 7755
      4327 7742 4327 7738 4304 7737
TIME...MOT...LOC 0117Z 263DEG 53KT 4319 7743 

$$

NYC055-110145-
/O.CON.KBUF.SV.W.0022.000000T0000Z-150611T0145Z/
MONROE NY-
919 PM EDT WED JUN 10 2015

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

AT 917 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 
MPH. THIS STORM WAS LOCATED OVER WEBSTER...MOVING EAST AT 60 MPH. 
ADDITIONAL STRONG THUNDERSTORSM WERE DEVELOPING FARTHER WEST ACROSS 
ROCHESTER...CHILI...AND CHURCHVILLE.

LOCATIONS IMPACTED INCLUDE...
ROCHESTER...GREECE...IRONDEQUOIT...CHILI...EAST ROCHESTER...
WEBSTER...FAIRPORT AND BRIGHTON.

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 4307 7788 4320 7785 4323 7761 4323 7755
      4327 7742 4327 7738 4304 7737
TIME...MOT...LOC 0117Z 263DEG 53KT 4319 7743 

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 8:14 PM EDT	Special Marine Warning	BUF		91 min
Jun 10, 8:16 PM EDT	Special Marine Warning	BUF		59 min
Jun 10, 8:48 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	57 min
Jun 10, 9:12 PM EDT	Special Marine Warning	BUF		63 min
Jun 10, 9:16 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	45 min
Jun 10, 9:36 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe	26 min
Jun 10, 9:40 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Ontario, Wayne	35 min
Jun 10, 9:44 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Jefferson, Lewis, Oswego	61 min
Jun 10, 9:46 PM EDT	Tornado Warning	BUF	Ontario	29 min
Jun 10, 10:33 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	27 min
Jun 11, 10:02 AM EDT	Special Weather Statement	BUF	Monroe	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.