Alert archive / New York / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 53, NWS Buffalo, NY

August 4, 2015Cayuga County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 4, 2015, 2:36 PM EDT for Cayuga County, Wayne County, New York. It was in force for 39 min. 4 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: Aug 4, 2015, 2:36 PM EDT (18:36 UTC)
Expired: Aug 4, 2015, 3:15 PM EDT
In force: 39 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Cayuga County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 103 km from the middle of the area, began a volume at 18:38 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
Aug 4, 2:40 PM EDT	TSTM WND DMG	Port Byron, NY	LARGE LIMB DOWN ON MCCLELLAN STREET.
Aug 4, 2:40 PM EDT	TSTM WND DMG	Port Byron, NY	TREE DOWN ON SHOTWELL STREET.
Aug 4, 2:40 PM EDT	HAIL 0.75	Port Byron, NY
Aug 4, 2:40 PM EDT	HAIL 1	Port Byron, NY

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, 6.6 hours before the alert went out and 174 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: 138 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1007 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

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

037 
WUUS51 KBUF 041836
SVRBUF
NYC011-117-041915-
/O.NEW.KBUF.SV.W.0053.150804T1836Z-150804T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
236 PM EDT TUE AUG 4 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CAYUGA COUNTY IN CENTRAL NEW YORK...
  SOUTHEASTERN WAYNE COUNTY IN WESTERN NEW YORK...

* UNTIL 315 PM EDT

* AT 236 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 MONTEZUMA...OR 11 MILES
  NORTHWEST OF AUBURN...AND MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WEEDSPORT...CONQUEST...SAVANNAH...PORT BYRON AND SOUTH BUTLER. 

THIS INCLUDES INTERSTATE 90 NEAR EXIT 40.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4311 7649 4310 7650 4303 7649 4303 7671
      4302 7680 4317 7676 4315 7648 4313 7648
      4311 7647
TIME...MOT...LOC 1836Z 281DEG 27KT 4307 7669 

$$

WOOD

1 follow-up statement

987 
WWUS51 KBUF 041910
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
310 PM EDT TUE AUG 4 2015

NYC011-117-041919-
/O.EXP.KBUF.SV.W.0053.000000T0000Z-150804T1915Z/
CAYUGA NY-WAYNE NY-
310 PM EDT TUE AUG 4 2015

...THE SEVERE THUNDERSTORM WARNING FOR CAYUGA AND SOUTHEASTERN WAYNE
COUNTIES WILL EXPIRE AT 315 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS
AND EXITED THE WARNED AREA. THEREFORE THE WARNING WILL BE ALLOWED TO
EXPIRE.

LAT...LON 4311 7649 4310 7650 4303 7649 4303 7671
      4302 7680 4317 7676 4315 7648 4313 7648
      4311 7647
TIME...MOT...LOC 1909Z 281DEG 27KT 4307 7669 

$$

WOOD

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 4:06 AM EDT	Small Craft Advisory	BUF		18 hr
Aug 4, 2:29 PM EDT	Special Weather Statement	BUF	Cayuga	46 min
Aug 4, 3:50 PM EDT	Small Craft Advisory	BUF		37 hr
Aug 4, 4:18 PM EDT	Special Marine Warning	BUF		42 min
Aug 4, 4:25 PM EDT	Special Weather Statement	BUF	Wayne	50 min
Aug 4, 5:06 PM EDT	Special Marine Warning	BUF		54 min
Aug 4, 5:52 PM EDT	Special Weather Statement	BUF	Erie	23 min
Aug 4, 6:40 PM EDT	Special Weather Statement	BUF	Genesee	50 min
Aug 4, 7:06 PM EDT	Special Marine Warning	BUF		54 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.