Alert archive / New York / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 1, NWS Buffalo, NY

May 9, 2014Erie County, Niagara County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 9, 2014, 4:38 PM EDT for Erie County, Niagara County, New York. It was in force for 52 min. 2 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 9, 2014, 4:38 PM EDT (20:38 UTC)
Expired: May 9, 2014, 5:30 PM EDT
In force: 52 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Erie County, NY, Niagara County, NY

The radar

The Buffalo radar (KBUF), 16 km from the middle of the area, began a volume at 20:41 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 9, 4:43 PM EDT	TSTM WND DMG	Lewiston, NY	TREES DOWN ON BUFFALO STREET
May 9, 5:06 PM EDT	TSTM WND DMG	1 N Hamburg, NY	WIRES DOWN ON CLARK STREET

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, 8.6 hours before the alert went out and 19 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: 58 J/kg
Mixed-layer CIN: -270 J/kg
Mixed-layer LCL: 1547 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 102 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.

740 
WUUS51 KBUF 092038
SVRBUF
NYC029-063-092130-
/O.NEW.KBUF.SV.W.0001.140509T2038Z-140509T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
438 PM EDT FRI MAY 9 2014

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ERIE COUNTY IN WESTERN NEW YORK
  NIAGARA COUNTY IN WESTERN NEW YORK

* UNTIL 530 PM EDT

* AT 436 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 LEWISTON TO LAKE ERIE BEACH...AND MOVING EAST AT 40 MPH.      
  STRONG WINDS ARE PUSHING OUT AHEAD OF THE LINE OF THUNDERSTORMS.   
  THE STRONG WINDS WILL BEGIN PRIOR TO ANY RAINFALL OR LIGHTNING.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  GRAND ISLAND...
  BUFFALO...
  NIAGARA FALLS...
  LACKAWANNA...
  SANBORN...
  SLOAN...
  PENDLETON...
  NEWFANE...
  ELMA...
  WALES CENTER...
  MIDDLEPORT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WIND DAMAGE WITH THESE STORMS WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4269 7907 4274 7892 4279 7886 4294 7892
      4300 7903 4306 7901 4308 7908 4314 7905
      4327 7907 4337 7863 4338 7847 4256 7848
      4252 7899 4254 7908 4263 7910
TIME...MOT...LOC 2037Z 261DEG 36KT 4319 7907 4259 7905

$$

HITCHCOCK

2 follow-up statements

540 
WWUS51 KBUF 092103
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
503 PM EDT FRI MAY 9 2014

NYC029-063-092130-
/O.CON.KBUF.SV.W.0001.000000T0000Z-140509T2130Z/
NIAGARA NY-ERIE NY-
503 PM EDT FRI MAY 9 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR ERIE AND NIAGARA COUNTIES...

AT 456 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM WILSON TO 6 MILES SOUTHWEST OF BOSTON...MOVING EAST 
AT 40 MPH. STRONG WINDS HAVE PUSHED OUT AHEAD OF THE LINE OF 
THUNDERSTORMS...SO THE STRONG WINDS WILL ARRIVE PRIOR TO THE ONSET 
OF RAIN OR LIGHTNING.

SOME LOCATIONS IN THE WARNING INCLUDE...
  AMHERST...
  CLARENCE...
  LOCKPORT...
  AKRON...
  ELMA...
  THIRTY MILE POINT...
  MIDDLEPORT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WIND DAMAGE WITH THESE STORMS WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4269 7907 4274 7892 4279 7886 4294 7892
      4300 7903 4306 7901 4308 7908 4314 7905
      4327 7907 4337 7863 4338 7847 4256 7848
      4252 7899 4254 7908 4263 7910
TIME...MOT...LOC 2102Z 261DEG 36KT 4331 7869 4256 7872

$$

HITCHCOCK

702 
WWUS51 KBUF 092133
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
533 PM EDT FRI MAY 9 2014

NYC029-063-092143-
/O.EXP.KBUF.SV.W.0001.000000T0000Z-140509T2130Z/
NIAGARA NY-ERIE NY-
533 PM EDT FRI MAY 9 2014

...THE SEVERE THUNDERSTORM WARNING FOR ERIE AND NIAGARA COUNTIES HAS
EXPIRED...

AT 533 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE OUTFLOW 
BOUNDARY OF STRONG WINDS THAT PROMPTED THE WARNING HAD EXITED THE 
WARNED AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 4269 7907 4274 7892 4279 7886 4294 7892
      4300 7903 4306 7901 4308 7908 4314 7905
      4327 7907 4337 7863 4338 7847 4256 7848
      4252 7899 4254 7908 4263 7910
TIME...MOT...LOC 2103Z 261DEG 36KT 4331 7867 4256 7871

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 1:46 AM EDT	Special Weather Statement	BUF	Ontario	29 min
May 9, 4:17 PM EDT	Special Marine Warning	BUF		88 min
May 9, 5:00 PM EDT	Special Marine Warning	BUF		90 min
May 9, 5:12 PM EDT	Special Weather Statement	BUF	Cattaraugus, Genesee, Orleans, Wyoming	63 min
May 9, 5:25 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Orleans, Wyoming	50 min
May 9, 5:58 PM EDT	Special Weather Statement	BUF	Livingston, Monroe	62 min
May 9, 5:59 PM EDT	Special Marine Warning	BUF		91 min
May 9, 6:40 PM EDT	Special Weather Statement	BUF	Ontario, Wayne	80 min
May 9, 7:08 PM EDT	Special Marine Warning	BUF		67 min
May 9, 7:40 PM EDT	Special Weather Statement	BUF	Oswego	65 min
May 9, 7:51 PM EDT	Special Marine Warning	BUF		39 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.