Alert archive / New York / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 51, NWS Buffalo, NY

July 8, 20146 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 8, 2014, 4:31 PM EDT for 6 counties in New York. It was in force for 57 min. 14 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: Jul 8, 2014, 4:31 PM EDT (20:31 UTC)
Expired: Jul 8, 2014, 5:28 PM EDT
In force: 57 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Genesee County, NY, Livingston County, NY, Monroe County, NY, Ontario County, NY, Orleans County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 83 km from the middle of the area, began a volume at 20:33 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
Jul 8, 4:42 PM EDT	TSTM WND DMG	Pavilion, NY	TREE AND WIRES DOWN JUST OFF ROUTE 20.
Jul 8, 4:50 PM EDT	TSTM WND DMG	Spencerport, NY	TREES AND WIRES DOWN
Jul 8, 4:50 PM EDT	TSTM WND DMG	York, NY	TREES AND WIRES DOWN IN TOWN
Jul 8, 4:57 PM EDT	TSTM WND DMG	Avon, NY	TREES AND WIRES DOWN
Jul 8, 4:57 PM EDT	TSTM WND DMG	Rochester, NY	TREES AND WIRES DOWN ACROSS THE CITY
Jul 8, 4:59 PM EDT	TSTM WND DMG	1 E West Rush, NY	TREE ON SUV
Jul 8, 5:01 PM EDT	TSTM WND DMG	Ne Irondequoit, NY	TREES AND WIRES DOWN
Jul 8, 5:05 PM EDT	TSTM WND DMG	Honeoye Falls, NY	MANY TREES DOWN ACROSS TOWN
Jul 8, 5:05 PM EDT	TSTM WND DMG	Lima, NY	TREES AND WIRES DOWN
Jul 8, 5:06 PM EDT	TSTM WND DMG	Mendon, NY	TREES AND WIRES DOWN
Jul 8, 5:08 PM EDT	TSTM WND DMG	Webster, NY	TREES AND WIRES DOWN ACROSS CITY.
Jul 8, 5:15 PM EDT	TSTM WND DMG	Victor, NY	TREES AND POWERLINES DOWN
Jul 8, 5:20 PM EDT	TSTM WND DMG	Honeoye, NY	TREE DOWN ON LOCUST STREET
Jul 8, 5:22 PM EDT	TSTM WND DMG	Dansville, NY	TREE ON A HOUSE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 8, 1:04 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.5 hours before the alert went out and 79 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: 232 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 786 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

468 
WUUS51 KBUF 082031
SVRBUF
NYC037-051-055-069-073-121-082145-
/O.NEW.KBUF.SV.W.0051.140708T2031Z-140708T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
431 PM EDT TUE JUL 8 2014

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN GENESEE COUNTY IN WESTERN NEW YORK
  LIVINGSTON COUNTY IN WESTERN NEW YORK
  MONROE COUNTY IN WESTERN NEW YORK
  WESTERN ONTARIO COUNTY IN WESTERN NEW YORK
  EASTERN ORLEANS COUNTY IN WESTERN NEW YORK
  EASTERN WYOMING COUNTY IN WESTERN NEW YORK

* UNTIL 545 PM EDT

* AT 430 PM EDT...NATIONAL WEATHER SERVICE 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 CHURCHVILLE TO 9 MILES WEST OF PORTAGEVILLE...MOVING EAST AT
  55 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  GATES-NORTH GATES...
  ROCHESTER...
  IRONDEQUOIT...
  WEBSTER...
  HEMLOCK...
  SPRINGWATER...
  NAPLES...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO HEAVY RAIN AND DAMAGING WINDS...FREQUENT CLOUD TO 
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
TUESDAY EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4254 7809 4338 7801 4335 7776 4324 7755
      4328 7739 4257 7739 4257 7765 4254 7766
      4252 7772
TIME...MOT...LOC 2030Z 255DEG 57KT 4312 7782 4254 7817

$$

RSH

2 follow-up statements

904 
WWUS51 KBUF 082104
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
504 PM EDT TUE JUL 8 2014

NYC037-073-121-082114-
/O.CAN.KBUF.SV.W.0051.000000T0000Z-140708T2145Z/
GENESEE NY-WYOMING NY-ORLEANS NY-
504 PM EDT TUE JUL 8 2014

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ORLEANS...EASTERN
WYOMING AND EASTERN GENESEE COUNTIES IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
TUESDAY EVENING FOR WESTERN NEW YORK.

LAT...LON 4253 7792 4335 7776 4324 7755 4328 7739
      4257 7739 4257 7765 4254 7766 4252 7772
TIME...MOT...LOC 2104Z 249DEG 36KT 4322 7741 4273 7765

$$

NYC051-055-069-082145-
/O.CON.KBUF.SV.W.0051.000000T0000Z-140708T2145Z/
LIVINGSTON NY-ONTARIO NY-MONROE NY-
504 PM EDT TUE JUL 8 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR EASTERN MONROE...WESTERN ONTARIO AND LIVINGSTON COUNTIES...

THIS ALSO INCLUDES THE NEW YORK THRUWAY BETWEEN EXITS 45 AND 46.

THIS ALSO INCLUDES INTERSTATE 390 BETWEEN EXITS 4 AND 12.

AT 501 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM WEBSTER TO CONESUS...OR ALONG A LINE
EXTENDING FROM WEBSTER TO 8 MILES SOUTHEAST OF GENESEO...MOVING EAST
AT 40 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  RUSH...
  HENRIETTA...
  PENFIELD...
  FAIRPORT...
  CANADICE...
  HONEOYE...
  BRISTOL...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THE PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS...AND DEADLY CLOUD TO GROUND 
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY 
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 4253 7792 4335 7776 4324 7755 4328 7739
      4257 7739 4257 7765 4254 7766 4252 7772
TIME...MOT...LOC 2104Z 249DEG 36KT 4322 7741 4273 7765

$$

HITCHCOCK

429 
WWUS51 KBUF 082128
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
528 PM EDT TUE JUL 8 2014

NYC051-055-069-082136-
/O.CAN.KBUF.SV.W.0051.000000T0000Z-140708T2145Z/
LIVINGSTON NY-ONTARIO NY-MONROE NY-
528 PM EDT TUE JUL 8 2014

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MONROE...WESTERN 
ONTARIO AND LIVINGSTON COUNTIES IS CANCELLED...

AT 526 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 CANCELLED.

A SEPARATE SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN 
ONTARIO COUNTY AND EXTREME EASTERN MONROE COUNTY.

LAT...LON 4253 7792 4335 7776 4324 7755 4328 7739
      4257 7739 4257 7765 4254 7766 4252 7772
TIME...MOT...LOC 2126Z 249DEG 36KT 4330 7713 4281 7737

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 8:12 PM EDT	Special Marine Warning	BUF		63 min
Jul 7, 9:02 PM EDT	Special Marine Warning	BUF		58 min
Jul 7, 10:20 PM EDT	Special Marine Warning	BUF		25 min
Jul 7, 10:25 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Orleans, Wyoming	65 min
Jul 8, 2:03 AM EDT	Small Craft Advisory	BUF		33 hr
Jul 8, 1:01 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	59 min
Jul 8, 1:56 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Wyoming	49 min
Jul 8, 2:43 PM EDT	Special Marine Warning	BUF		92 min
Jul 8, 2:45 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	60 min
Jul 8, 3:06 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	54 min
Jul 8, 3:08 PM EDT	Special Marine Warning	BUF		82 min
Jul 8, 3:28 PM EDT	Special Marine Warning	BUF		92 min
Jul 8, 3:35 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	55 min
Jul 8, 3:46 PM EDT	Special Weather Statement	BUF	Lewis	44 min
Jul 8, 4:00 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Erie	45 min
Jul 8, 4:10 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans, Wyoming	44 min
Jul 8, 4:21 PM EDT	Special Marine Warning	BUF		84 min
Jul 8, 4:43 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	62 min
Jul 8, 4:51 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Ontario, Oswego, Wayne	54 min
Jul 8, 4:57 PM EDT	Special Marine Warning	BUF		63 min
Jul 8, 4:58 PM EDT	Areal Flood Advisory	BUF	Genesee, Livingston, Monroe, Ontario, Orleans, Wyoming	3 hr
Jul 8, 5:02 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Ontario, Wayne	58 min
Jul 8, 5:16 PM EDT	Special Marine Warning	BUF		89 min
Jul 8, 5:41 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	79 min
Jul 8, 5:56 PM EDT	Special Marine Warning	BUF		64 min
Jul 8, 6:03 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Oswego	57 min
Jul 8, 6:12 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	78 min
Jul 8, 6:54 PM EDT	Areal Flood Advisory	BUF	Jefferson, Lewis	3 hr
Jul 8, 7:30 PM EDT	Special Marine Warning	BUF		60 min

Nearby

Severe Thunderstorm Warnings in New York, 2014 Every severe thunderstorm warning in 2014

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.