Alert archive / New York / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 20, NWS Buffalo, NY

June 20, 20165 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 20, 2016, 10:58 PM EDT for 5 counties in New York. It was in force for 47 min. 10 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: Jun 20, 2016, 10:58 PM EDT (02:58 UTC)
Expired: Jun 20, 2016, 11:45 PM EDT
In force: 47 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Allegany County, NY, Cattaraugus County, NY, Erie County, NY, Livingston County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 54 km from the middle of the area, began a volume at 02:58 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
Jun 20, 10:58 PM EDT	TSTM WND DMG	Bliss, NY	TREES AND WIRES DOWN. TIME ESTIMATED FROM RADAR
Jun 20, 11:06 PM EDT	TSTM WND DMG	Pike, NY	TREES AND WIRES DOWN. TIME ESTIAMTED FROM RADAR
Jun 20, 11:07 PM EDT	TSTM WND DMG	1 W Chaffee, NY	TREE DOWN ON SAVAGE RD
Jun 20, 11:14 PM EDT	TSTM WND DMG	1 Nw Chaffee, NY	POWERPOLES AND LINES DOWN
Jun 20, 11:14 PM EDT	HAIL 0.88	1 Nw Chaffee, NY
Jun 20, 11:28 PM EDT	TSTM WND DMG	Delevan, NY	NUMEROUS TREES DOWN INCLUDING A LARGE TREE DOWN ON 2 TRAILERS
Jun 20, 11:28 PM EDT	TSTM WND DMG	Yorkshire, NY	NUMEROUS TREES AND POWERLINES DOWN THROUGHOUT THE TOWN
Jun 20, 11:31 PM EDT	TSTM WND DMG	Eagle, NY	TREES AND WIRES DOWN. TIME ESTIMATED FROM RADAR
Jun 20, 11:50 PM EDT	TSTM WND DMG	Houghton, NY	TREES AND WIRES DOWN. TIME ESTIMATED FROM RADAR.
Jun 20, 11:55 PM EDT	TSTM WND DMG	Caneadea, NY	NUMEROUS TREES AND WIRES DOWN. TIME ESTIMATED FROM RADAR.

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
Jun 20, 8:06 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 3.0 hours before the alert went out and 51 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: 874 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1626 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 223 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

As transmitted.

493 
WUUS51 KBUF 210258
SVRBUF
NYC003-009-029-051-121-210345-
/O.NEW.KBUF.SV.W.0020.160621T0258Z-160621T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1058 PM EDT MON JUN 20 2016

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ERIE COUNTY IN WESTERN NEW YORK...
  SOUTHWESTERN LIVINGSTON COUNTY IN WESTERN NEW YORK...
  NORTHEASTERN CATTARAUGUS COUNTY IN WESTERN NEW YORK...
  NORTHERN ALLEGANY COUNTY IN WESTERN NEW YORK...
  SOUTHWESTERN WYOMING COUNTY IN WESTERN NEW YORK...

* UNTIL 1145 PM EDT

* AT 1058 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ARCADE...OR
  17 MILES WEST OF LETCHWORTH STATE PARK...MOVING SOUTHEAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  LETCHWORTH STATE PARK...BOSTON...EDEN...SPRINGVILLE...COLDEN...ARCADE...
  FRANKLINVILLE AND BELFAST.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 90 NEAR EXIT 57A.
 INTERSTATE 86 NEAR EXIT 31.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4266 7897 4271 7846 4247 7774 4229 7798
      4232 7850 4240 7883
TIME...MOT...LOC 0258Z 309DEG 25KT 4259 7832 

HAIL...1.00IN
WIND...60MPH
 
$$

APFFEL

2 follow-up statements

756 
WWUS51 KBUF 210321
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1121 PM EDT MON JUN 20 2016

NYC003-009-029-051-121-210345-
/O.CON.KBUF.SV.W.0020.000000T0000Z-160621T0345Z/
ERIE NY-LIVINGSTON NY-CATTARAUGUS NY-ALLEGANY NY-WYOMING NY-
1121 PM EDT MON JUN 20 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR SOUTHEASTERN ERIE...SOUTHWESTERN LIVINGSTON...NORTHEASTERN
CATTARAUGUS...NORTHERN ALLEGANY AND SOUTHWESTERN WYOMING COUNTIES...

AT 1120 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HOUGHTON...OR
14 MILES SOUTHWEST OF LETCHWORTH STATE PARK...MOVING SOUTHEAST AT 30
MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
LETCHWORTH STATE PARK...SPRINGVILLE...ARCADE...FRANKLINVILLE...BELFAST...
RUSHFORD...CHAFFEE AND HOUGHTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4258 7885 4263 7821 4247 7774 4229 7798
      4232 7850 4239 7874
TIME...MOT...LOC 0320Z 309DEG 25KT 4249 7815 

HAIL...1.00IN
WIND...60MPH
 
$$

APFFEL

970 
WWUS51 KBUF 210339
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1139 PM EDT MON JUN 20 2016

NYC003-009-029-051-121-210349-
/O.EXP.KBUF.SV.W.0020.000000T0000Z-160621T0345Z/
ERIE NY-LIVINGSTON NY-CATTARAUGUS NY-ALLEGANY NY-WYOMING NY-
1139 PM EDT MON JUN 20 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ERIE...
SOUTHWESTERN LIVINGSTON...NORTHEASTERN CATTARAUGUS...NORTHERN
ALLEGANY AND SOUTHWESTERN WYOMING COUNTIES WILL EXPIRE AT 1145 PM
EDT...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS BEEN REPLACED
BY ANOTHER WARNING. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT FOR
WESTERN NEW YORK.

LAT...LON 4258 7885 4263 7821 4247 7774 4229 7798
      4232 7850 4239 7874
TIME...MOT...LOC 0338Z 309DEG 25KT 4249 7815 

$$

APFFEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 8:57 PM EDT	Special Marine Warning	BUF		93 min
Jun 20, 9:04 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	56 min
Jun 20, 9:20 PM EDT	Special Marine Warning	BUF		55 min
Jun 20, 9:26 PM EDT	Special Weather Statement	BUF	Erie	34 min
Jun 20, 9:30 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Wyoming	45 min
Jun 20, 9:43 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	62 min
Jun 20, 9:53 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	37 min
Jun 20, 10:11 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Livingston, Wyoming	49 min
Jun 20, 10:26 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	64 min
Jun 20, 10:33 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	27 min
Jun 20, 10:36 PM EDT	Special Marine Warning	BUF		39 min
Jun 20, 10:39 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Livingston, Wyoming	51 min
Jun 20, 10:53 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	52 min
Jun 20, 11:13 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Wayne	37 min
Jun 20, 11:20 PM EDT	Flash Flood Warning	BUF	Erie, Wyoming	3 hr
Jun 20, 11:34 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Livingston, Wyoming	41 min
Jun 20, 11:43 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	23 min
Jun 21, 12:15 AM EDT	Severe Thunderstorm Warning	BUF	Allegany	30 min

Nearby

Severe Thunderstorm Warnings in New York, 2016 Every severe thunderstorm warning in 2016

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.