Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 56, NWS Buffalo, NY

July 3, 2013Ontario County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 3, 2013, 5:29 PM EDT for Ontario County, Wayne County, New York. It was in force for 61 min. 5 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 3, 2013, 5:29 PM EDT (21:29 UTC)
Expired: Jul 3, 2013, 6:30 PM EDT
In force: 61 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Ontario County, NY, Wayne County, NY

The radar

The Binghamton radar (KBGM), 128 km from the middle of the area, began a volume at 21:31 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 3, 5:46 PM EDT	TSTM WND DMG	Macedon, NY	MULTIPLE REPORTS OF TREES AND WIRES DOWN.
Jul 3, 5:50 PM EDT	TSTM WND DMG	Palmyra, NY	MULTIPLE REPORTS OF TREES AND WIRES DOWN.
Jul 3, 6:05 PM EDT	TSTM WND DMG	Newark, NY	MULTIPLE REPORTS OF TREES AND WIRES DOWN.
Jul 3, 6:17 PM EDT	TSTM WND DMG	Lyons, NY	MULTIPLE REPORTS OF TREES AND WIRES DOWN.
Jul 3, 6:33 PM EDT	TSTM WND DMG	2 Se Lyons, NY	MULTIPLE REPORTS OF WIRES AND TREES 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 12:00Z, 9.5 hours before the alert went out and 139 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: 1393 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 521 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

869 
WUUS51 KBUF 032129
SVRBUF
NYC069-117-032230-
/O.NEW.KBUF.SV.W.0056.130703T2129Z-130703T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
529 PM EDT WED JUL 3 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ONTARIO COUNTY IN WESTERN NEW YORK
  WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 630 PM EDT

* AT 526 PM EDT...NATIONAL WEATHER SERVICE 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
  PALMYRA...OR 7 MILES SOUTHEAST OF FAIRPORT...AND MOVING EAST AT 20
  MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  PALMYRA...
  MARION...
  NEWARK...
  LYONS...
  CLYDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

&&

LAT...LON 4296 7736 4314 7737 4329 7679 4306 7671
      4306 7672 4303 7671
TIME...MOT...LOC 2130Z 256DEG 17KT 4306 7729

$$

JJR

1 follow-up statement

353 
WWUS51 KBUF 032202
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
602 PM EDT WED JUL 3 2013

NYC069-117-032230-
/O.CON.KBUF.SV.W.0056.000000T0000Z-130703T2230Z/
ONTARIO NY-WAYNE NY-
602 PM EDT WED JUL 3 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR WAYNE AND NORTHEASTERN ONTARIO COUNTIES...

AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR NEWARK...OR 17 MILES NORTHEAST OF CANANDAIGUA...MOVING
EAST AT 20 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  LYONS...
  CLYDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE ACROSS 
PORTIONS OF THE ROCHESTER AREA. THIS IS AN EXTREMELY DANGEROUS 
SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY 
FROM WINDOWS!

&&

LAT...LON 4296 7736 4314 7737 4329 7679 4306 7671
      4306 7672 4303 7671
TIME...MOT...LOC 2201Z 256DEG 17KT 4310 7710

$$

JJR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 4:23 PM EDT	Special Weather Statement	BUF	Monroe	52 min
Jul 3, 4:52 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Wayne	38 min
Jul 3, 5:05 PM EDT	Areal Flood Advisory	BUF	Genesee, Orleans	3 hr
Jul 3, 5:30 PM EDT	Severe Thunderstorm Warning	BUF	Orleans	45 min
Jul 3, 5:42 PM EDT	Special Marine Warning	BUF		63 min
Jul 3, 5:46 PM EDT	Areal Flood Advisory	BUF	Monroe	3 hr
Jul 3, 5:58 PM EDT	Areal Flood Advisory	BUF	Wayne	3 hr
Jul 3, 6:29 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Wayne	61 min
Jul 3, 7:53 PM EDT	Areal Flood Warning	BUF	Monroe	6 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.