Alert archive / New York / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 4, NWS Buffalo, NY

May 13, 2014Ontario County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 13, 2014, 8:51 PM EDT for Ontario County, Wayne County, New York. It was in force for 39 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: May 13, 2014, 8:51 PM EDT (00:51 UTC)
Expired: May 13, 2014, 9:30 PM EDT
In force: 39 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Ontario County, NY, Wayne County, NY

The radar

The Binghamton radar (KBGM), 119 km from the middle of the area, began a volume at 00:52 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
May 13, 8:53 PM EDT	TSTM WND DMG	Shortsville, NY	TREES AND WIRES DOWN.
May 13, 8:58 PM EDT	TSTM WND DMG	Clifton Springs, NY	TREES AND WIRES DOWN.
May 13, 9:03 PM EDT	TSTM WND DMG	Newark, NY	TREES DOWN.
May 13, 9:03 PM EDT	TSTM WND DMG	Phelps, NY	TREES AND WIRES DOWN.
May 13, 9:14 PM EDT	TSTM WND DMG	Lyons, NY	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 00:00Z, 0.9 hours before the alert went out and 144 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: 736 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1723 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 134 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.

988 
WUUS51 KBUF 140051
SVRBUF
NYC069-117-140130-
/O.NEW.KBUF.SV.W.0004.140514T0051Z-140514T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
851 PM EDT TUE MAY 13 2014

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

THIS ALSO INCLUDES THE NEW YORK THRUWAY BETWEEN EXITS 42 AND 43.

* UNTIL 930 PM EDT

* AT 848 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
  CLIFTON SPRINGS...OR 6 MILES NORTHEAST OF CANANDAIGUA...AND MOVING
  EAST AT 25 MPH.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4285 7725 4301 7734 4322 7674 4314 7670
      4308 7670 4306 7672 4302 7672 4301 7696
      4292 7695
TIME...MOT...LOC 0051Z 248DEG 21KT 4296 7717

$$

JJR

2 follow-up statements

765 
WWUS51 KBUF 140113
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
913 PM EDT TUE MAY 13 2014

NYC069-117-140130-
/O.CON.KBUF.SV.W.0004.000000T0000Z-140514T0130Z/
ONTARIO NY-WAYNE NY-
913 PM EDT TUE MAY 13 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SOUTHEASTERN WAYNE AND NORTHEASTERN ONTARIO COUNTIES...

AT 910 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 PHELPS...OR 10 MILES NORTH OF GENEVA...MOVING EAST AT 25
MPH.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4290 7703 4293 7705 4293 7713 4306 7719
      4322 7674 4314 7670 4308 7670 4306 7672
      4302 7672 4301 7696 4292 7695
TIME...MOT...LOC 0113Z 248DEG 21KT 4301 7701

$$

JJR

202 
WWUS51 KBUF 140130
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
930 PM EDT TUE MAY 13 2014

NYC069-117-140140-
/O.EXP.KBUF.SV.W.0004.000000T0000Z-140514T0130Z/
ONTARIO NY-WAYNE NY-
930 PM EDT TUE MAY 13 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WAYNE AND
NORTHEASTERN ONTARIO COUNTIES HAS EXPIRED...

AT 930 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO LONGER
SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE
STILL POSSIBLE FROM THE THUNDERSTORM.

LAT...LON 4290 7703 4293 7705 4293 7713 4306 7719
      4322 7674 4314 7670 4308 7670 4306 7672
      4302 7672 4301 7696 4292 7695
TIME...MOT...LOC 0130Z 248DEG 21KT 4304 7688

$$

JJR

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 9:32 PM EDT	Flash Flood Warning	BUF	Cayuga, Livingston, Ontario, Wayne	5 hr
May 13, 9:50 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	40 min
May 14, 1:54 AM EDT	Areal Flood Advisory	BUF	Cattaraugus, Chautauqua, Erie	4 hr
May 14, 3:11 AM EDT	Special Weather Statement	BUF	Allegany, Livingston, Wyoming	64 min
May 14, 10:33 AM EDT	Flash Flood Watch	BUF	Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 7 more	18 hr
May 14, 4:46 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara, Orleans	59 min
May 14, 5:44 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Monroe, Niagara, Orleans	61 min
May 14, 6:09 PM EDT	Areal Flood Advisory	BUF	Erie, Genesee, Niagara, Orleans	4 hr
May 14, 6:40 PM EDT	Special Marine Warning	BUF		95 min
May 14, 6:49 PM EDT	Severe Thunderstorm Warning	BUF	Niagara	56 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.