Alert archive / New York / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 15, NWS Buffalo, NY

June 13, 20185 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 13, 2018, 5:50 PM EDT for 5 counties in New York. It was in force for 70 min. 12 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 13, 2018, 5:50 PM EDT (21:50 UTC)
Expired: Jun 13, 2018, 7:00 PM EDT
In force: 70 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 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), 75 km from the middle of the area, began a volume at 21:53 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 13, 5:51 PM EDT	TSTM WND DMG	2 Nw Cattaraugus, NY	TREE DOWN ON ROUTE 353 BETWEEN 42ND STREET AND BROADWAY
Jun 13, 5:55 PM EDT	TSTM WND DMG	West Valley, NY	TREES DOWN
Jun 13, 5:58 PM EDT	TSTM WND DMG	Delevan, NY	NUMEROUS TREES DOWN
Jun 13, 6:02 PM EDT	TSTM WND DMG	Machias, NY	TREES DOWN
Jun 13, 6:02 PM EDT	HAIL 1.5	Machias, NY	TIME ESTIMATED FROM RADAR
Jun 13, 6:03 PM EDT	TSTM WND DMG	1 Ne Allegany, NY	TREES DOWN
Jun 13, 6:06 PM EDT	TSTM WND DMG	Farmersville Station, NY	TREES DOWN
Jun 13, 6:07 PM EDT	HAIL 1.25	Farmersville Station, NY	TIME ESTIMATED FROM RADAR
Jun 13, 6:10 PM EDT	TSTM WND DMG	Weston Mills, NY	TREES DOWN
Jun 13, 6:13 PM EDT	TSTM WND DMG	2 Ne Rushford, NY	TREES DOWN ON ROUTE 23 IN RUSHFORD
Jun 13, 6:15 PM EDT	HAIL 1.75	Rushford, NY	TIME ESTIMATED FROM RADAR
Jun 13, 6:28 PM EDT	TSTM WND DMG	4 Nnw Alma, NY	NUMEROUS TREES AND POWER LINES DOWN ALONG CALIFORNIA HALLOW ROAD IN TOWN OF BOLIVA. TIME ESTIAMTED 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 13, 4:06 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.8 hours before the alert went out and 71 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: 173 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 543 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 146 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

898 
WUUS51 KBUF 132150
SVRBUF
NYC003-009-029-051-121-132300-
/O.NEW.KBUF.SV.W.0015.180613T2150Z-180613T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
550 PM EDT WED JUN 13 2018

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Southern Wyoming County in western New York...
  Cattaraugus County in western New York...
  Southeastern Erie County in western New York...
  Southwestern Livingston County in western New York...
  Allegany County in western New York...

* Until 700 PM EDT..

* At 550 PM EDT, severe thunderstorms were located along a line
  extending from near Chaffee to near Springville to near Gowanda,
  moving east at 45 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Olean, Salamanca, Dansville, Wellsville, Letchworth State Park,
  Allegany State Park, Springville and Alfred.

# 

This includes the following highways...
 Interstate 390 between exits 4 and 5.
 Interstate 86 between exits 20 and 33.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4200 7858 4229 7906 4236 7905 4249 7879
      4268 7860 4258 7762 4258 7766 4253 7766
      4253 7772 4200 7775
TIME...MOT...LOC 2150Z 286DEG 40KT 4260 7854 4247 7867 4243 7889 

HAIL...0.75IN
WIND...60MPH
 
$$

Church

3 follow-up statements

697 
WWUS51 KBUF 132200
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
600 PM EDT WED JUN 13 2018

NYC029-132210-
/O.CAN.KBUF.SV.W.0015.000000T0000Z-180613T2300Z/
Erie NY-
600 PM EDT WED JUN 13 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ERIE COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
western New York.

LAT...LON 4205 7853 4234 7889 4241 7888 4252 7849
      4262 7839 4258 7766 4253 7766 4253 7772
      4200 7775
TIME...MOT...LOC 2200Z 286DEG 40KT 4257 7842 4244 7855 4240 7877 

$$

NYC003-009-051-121-132300-
/O.CON.KBUF.SV.W.0015.000000T0000Z-180613T2300Z/
Wyoming NY-Cattaraugus NY-Livingston NY-Allegany NY-
600 PM EDT WED JUN 13 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR SOUTHERN WYOMING...EASTERN CATTARAUGUS...SOUTHWESTERN LIVINGSTON
AND ALLEGANY COUNTIES...

At 600 PM EDT, severe thunderstorms were located along a line
extending from near Arcade to 7 miles southeast of Springville to
near Ashford Hollow, moving east at 45 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Olean, Dansville, Wellsville, Letchworth State Park, Alfred, Ashford,
Arcade and Allegany.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4205 7853 4234 7889 4241 7888 4252 7849
      4262 7839 4258 7766 4253 7766 4253 7772
      4200 7775
TIME...MOT...LOC 2200Z 286DEG 40KT 4257 7842 4244 7855 4240 7877 

HAIL...1.25IN
WIND...60MPH
 
$$

Church

755 
WWUS51 KBUF 132220
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
620 PM EDT WED JUN 13 2018

NYC009-051-121-132229-
/O.CAN.KBUF.SV.W.0015.000000T0000Z-180613T2300Z/
Wyoming NY-Cattaraugus NY-Livingston NY-
620 PM EDT WED JUN 13 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN WYOMING...EASTERN
CATTARAUGUS AND SOUTHWESTERN LIVINGSTON COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
western New York.

LAT...LON 4203 7829 4237 7829 4247 7816 4247 7772
      4200 7775
TIME...MOT...LOC 2219Z 286DEG 48KT 4247 7799 4234 7813 4230 7835 

$$

NYC003-132300-
/O.CON.KBUF.SV.W.0015.000000T0000Z-180613T2300Z/
Allegany NY-
620 PM EDT WED JUN 13 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR ALLEGANY COUNTY...

At 619 PM EDT, severe thunderstorms were located along a line
extending from 7 miles south of Portageville to Belfast to 6 miles
east of Franklinville, moving east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Wellsville, Alfred, Belfast, Cuba, Rushford, Houghton, Whitesville
and Caneadea.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4203 7829 4237 7829 4247 7816 4247 7772
      4200 7775
TIME...MOT...LOC 2219Z 286DEG 48KT 4247 7799 4234 7813 4230 7835 

HAIL...<.75IN
WIND...60MPH
 
$$

Church

266 
WWUS51 KBUF 132251
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
651 PM EDT WED JUN 13 2018

NYC003-132301-
/O.EXP.KBUF.SV.W.0015.000000T0000Z-180613T2300Z/
Allegany NY-
651 PM EDT WED JUN 13 2018

...THE SEVERE THUNDERSTORM WARNING FOR ALLEGANY COUNTY WILL EXPIRE AT
700 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
western New York.

LAT...LON 4203 7829 4237 7829 4247 7816 4247 7772
      4200 7775
TIME...MOT...LOC 2251Z 286DEG 40KT 4237 7754 4224 7768 4220 7790 

$$

Church

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 10:14 PM EDT	Beach Hazards Statement	BUF	Chautauqua, Erie	17 hr
Jun 12, 10:14 PM EDT	Small Craft Advisory	BUF		46 hr
Jun 13, 3:50 PM EDT	Special Marine Warning	BUF		55 min
Jun 13, 4:26 PM EDT	Severe Thunderstorm Warning	BUF	Erie	28 min
Jun 13, 4:39 PM EDT	Special Marine Warning	BUF		66 min
Jun 13, 5:07 PM EDT	Special Marine Warning	BUF		83 min
Jun 13, 5:11 PM EDT	Special Weather Statement	BUF	Cattaraugus, Chautauqua	64 min
Jun 13, 5:17 PM EDT	Special Marine Warning	BUF		43 min
Jun 13, 5:32 PM EDT	Special Marine Warning	BUF		118 min
Jun 13, 5:57 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	78 min
Jun 13, 6:20 PM EDT	Special Marine Warning	BUF		55 min
Jun 13, 6:51 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	54 min
Jun 13, 7:01 PM EDT	Special Marine Warning	BUF		44 min
Jun 13, 7:43 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	62 min

Nearby

Severe Thunderstorm Warnings in New York, 2018 Every severe thunderstorm warning in 2018

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.