Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 56, NWS Buffalo, NY

July 8, 2021Erie County, Niagara County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 8, 2021, 3:41 PM EDT for Erie County, Niagara County, New York. It was in force for 48 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: Jul 8, 2021, 3:41 PM EDT (19:41 UTC)
Expired: Jul 8, 2021, 4:29 PM EDT
In force: 48 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Erie County, NY, Niagara County, NY

The radar

The Buffalo radar (KBUF), 14 km from the middle of the area, began a volume at 19:43 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
Jul 8, 3:44 PM EDT	TSTM WND DMG	1 N Tonawanda, NY	TREE DOWN NEAR HIGHLAND AVE AND TUSSING LANE.
Jul 8, 3:46 PM EDT	TSTM WND DMG	1 Ne Kenmore, NY	LARGE TREE BRANCH DOWN ON LEICESTER RD.
Jul 8, 3:46 PM EDT	TSTM WND DMG	1 Sse Tonawanda, NY	TREE DOWN ON WESTCHESTER BLVD.
Jul 8, 3:46 PM EDT	TSTM WND DMG	2 E Tonawanda, NY	LARGE TREE BRANCH DOWN ON WOODLAND DRIVE.
Jul 8, 3:46 PM EDT	TSTM WND DMG	2 E Tonawanda, NY	LARGE TREE BRANCH ON CAR ON TREADWELL ROAD.
Jul 8, 3:46 PM EDT	TSTM WND DMG	2 E Tonawanda, NY	TREE DOWN ACROSS TREADWELL ROAD.
Jul 8, 3:52 PM EDT	TSTM WND DMG	2 S Pendleton, NY	VERY LARGE TREE BRANCH DOWN.
Jul 8, 3:57 PM EDT	TSTM WND DMG	1 Nne Snyder, NY	TREE DOWN NEAR SHERIDAN DRIVE.
Jul 8, 4:13 PM EDT	TSTM WND DMG	1 Wnw Akron, NY	TREES DOWN REPORTED BY LOCAL MEDIA IN NEWSTEAD.
Jul 8, 4:13 PM EDT	TSTM WND DMG	3 N Akron, NY	MULTIPLE DOWNED TREES.

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, 7.7 hours before the alert went out and 17 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: 99 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 725 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

384 
WUUS51 KBUF 081941
SVRBUF
NYC029-063-082045-
/O.NEW.KBUF.SV.W.0056.210708T1941Z-210708T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
341 PM EDT Thu Jul 8 2021

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Northeastern Erie County in western New York...
  Southern Niagara County in western New York...

* Until 445 PM EDT..

* At 341 PM EDT, a severe thunderstorm was located near Tonawanda,
  moving east at 30 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Buffalo, Cheektowaga, West Seneca, North Tonawanda, Clarence,
  Lockport, Kenmore, Depew, Tonawanda and Amherst.

 This includes Interstate 90 between exits 53 and 49.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4305 7900 4310 7901 4319 7849 4282 7851
      4287 7892 4291 7890 4295 7892 4296 7893
      4296 7896 4298 7901 4300 7902 4302 7902
TIME...MOT...LOC 1941Z 270DEG 25KT 4297 7894 

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

HSK

4 follow-up statements

029 
WWUS51 KBUF 081950
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
350 PM EDT Thu Jul 8 2021

NYC029-063-082045-
/O.CON.KBUF.SV.W.0056.000000T0000Z-210708T2045Z/
Erie NY-Niagara NY-
350 PM EDT Thu Jul 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHEASTERN ERIE AND SOUTHERN NIAGARA COUNTIES...

At 349 PM EDT, a severe thunderstorm was located over Kenmore, moving
east at 30 mph.

HAZARD...70 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Buffalo, Cheektowaga, West Seneca, North Tonawanda, Clarence,
Lockport, Kenmore, Depew, Tonawanda and Amherst.

 This includes Interstate 90 between exits 53 and 49.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4305 7900 4310 7901 4319 7849 4282 7851
      4287 7892 4291 7890 4295 7892 4296 7893
      4296 7896 4298 7901 4300 7902 4302 7902
TIME...MOT...LOC 1949Z 270DEG 25KT 4297 7886 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

HSK

104 
WWUS51 KBUF 082008
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
408 PM EDT Thu Jul 8 2021

NYC029-063-082045-
/O.CON.KBUF.SV.W.0056.000000T0000Z-210708T2045Z/
Erie NY-Niagara NY-
408 PM EDT Thu Jul 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHEASTERN ERIE AND SOUTHEASTERN NIAGARA COUNTIES...

At 408 PM EDT, a severe thunderstorm was located over Clarence,
moving east at 35 mph.

HAZARD...70 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Buffalo, Cheektowaga, West Seneca, Clarence, Lockport, Depew,
Amherst, Tonawanda, Lancaster and Williamsville.

 This includes Interstate 90 between exits 53 and 49.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4315 7873 4319 7849 4282 7851 4287 7890
TIME...MOT...LOC 2008Z 271DEG 29KT 4296 7862 

HAIL...0.75IN
WIND...70MPH
 
$$

HSK

777 
WWUS51 KBUF 082018
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
418 PM EDT Thu Jul 8 2021

NYC029-063-082045-
/O.CON.KBUF.SV.W.0056.000000T0000Z-210708T2045Z/
Erie NY-Niagara NY-
418 PM EDT Thu Jul 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHEASTERN ERIE AND SOUTHEASTERN NIAGARA COUNTIES...

At 417 PM EDT, a severe thunderstorm was located near Clarence,
moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Clarence, Lancaster, Elma, Marilla, Akron, Alden, Elma Center,
Wolcottsville and Clarence Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4318 7854 4319 7849 4282 7851 4285 7869
TIME...MOT...LOC 2017Z 270DEG 25KT 4296 7853 

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

HSK

172 
WWUS51 KBUF 082029
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
429 PM EDT Thu Jul 8 2021

NYC029-063-082038-
/O.CAN.KBUF.SV.W.0056.000000T0000Z-210708T2045Z/
Erie NY-Niagara NY-
429 PM EDT Thu Jul 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ERIE AND
SOUTHEASTERN NIAGARA COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.  However heavy rain is
still possible with this thunderstorm.

LAT...LON 4318 7854 4319 7849 4282 7851 4285 7869
TIME...MOT...LOC 2025Z 270DEG 25KT 4296 7842 

$$

HSK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 8:04 PM EDT	Special Weather Statement	BUF	Allegany, Cattaraugus, Chautauqua	56 min
Jul 7, 8:39 PM EDT	Flash Flood Warning	BUF	Allegany	3 hr
Jul 8, 12:48 PM EDT	Special Weather Statement	BUF	Niagara	27 min
Jul 8, 1:40 PM EDT	Special Weather Statement	BUF	Niagara	35 min
Jul 8, 2:18 PM EDT	Special Weather Statement	BUF	Orleans	42 min
Jul 8, 3:08 PM EDT	Special Weather Statement	BUF	Niagara	67 min
Jul 8, 3:23 PM EDT	Special Marine Warning	BUF		37 min
Jul 8, 3:34 PM EDT	Special Weather Statement	BUF	Erie	41 min
Jul 8, 3:48 PM EDT	Special Marine Warning	BUF		57 min
Jul 8, 4:13 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans	32 min
Jul 8, 4:16 PM EDT	Special Weather Statement	BUF	Oswego	44 min
Jul 8, 4:26 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	49 min
Jul 8, 4:29 PM EDT	Special Weather Statement	BUF	Monroe	61 min
Jul 8, 4:37 PM EDT	Special Marine Warning	BUF		53 min
Jul 8, 4:45 PM EDT	Special Weather Statement	BUF	Genesee, Monroe	30 min
Jul 8, 4:53 PM EDT	Flash Flood Warning	BUF	Monroe, Wayne	3 hr
Jul 8, 5:09 PM EDT	Special Weather Statement	BUF	Lewis	51 min
Jul 8, 5:12 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	63 min
Jul 8, 6:15 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	60 min
Jul 8, 7:52 PM EDT	Special Weather Statement	BUF	Lewis	38 min

Nearby

Severe Thunderstorm Warnings in New York, 2021 Every severe thunderstorm warning in 2021

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.