Alert archive / New York / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 83, NWS Buffalo, NY

August 16, 20194 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 16, 2019, 5:13 PM EDT for 4 counties in New York. It was in force for 62 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: Aug 16, 2019, 5:13 PM EDT (21:13 UTC)
Expired: Aug 16, 2019, 6:15 PM EDT
In force: 62 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Erie County, NY, Genesee County, NY, Niagara County, NY, Orleans County, NY

The radar

The Buffalo radar (KBUF), 40 km from the middle of the area, began a volume at 21:14 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 16, 5:47 PM EDT	TSTM WND DMG	Knowlesville, NY	MULTIPLE TREES DOWN AND WIRE ON HOWLETT RD AND REPORTED APPLE ORCHARD HAD MULTIPLE TREES UPROOTED.
Aug 16, 6:22 PM EDT	TSTM WND DMG	Knowlesville, NY	BARN COLLAPSE, KNOWLESVILLE RD.

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, 9.2 hours before the alert went out and 39 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: 121 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 722 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

476 
WUUS51 KBUF 162113
SVRBUF
NYC029-037-063-073-162215-
/O.NEW.KBUF.SV.W.0083.190816T2113Z-190816T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
513 PM EDT Fri Aug 16 2019

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Northeastern Erie County in western New York...
  East central Niagara County in western New York...
  Western Orleans County in western New York...
  Northwestern Genesee County in western New York...

* Until 615 PM EDT..

* At 512 PM EDT, a severe thunderstorm was located over Akron 
  and moving northeast at 10 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Medina, Albion, Pembroke, Akron, Byron, Oakfield, Shelby, Alabama,
  Corfu and Elba.

 This includes Interstate 90 near exit 48A.
 
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 4333 7831 4309 7801 4295 7843 4306 7858
TIME...MOT...LOC 2112Z 235DEG 10KT 4303 7846 

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

Reynolds

1 follow-up statement

884 
WWUS51 KBUF 162129 RRA
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
529 PM EDT Fri Aug 16 2019

NYC029-162138-
/O.CAN.KBUF.SV.W.0083.000000T0000Z-190816T2215Z/
Erie NY-
529 PM EDT Fri Aug 16 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ERIE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area.  Therefore, the warning has been cancelled.

LAT...LON 4333 7831 4309 7801 4301 7837 4308 7846
      4309 7847 4308 7847 4311 7851
TIME...MOT...LOC 2128Z 235DEG 10KT 4306 7841 

$$

NYC037-063-073-162215-
/O.CON.KBUF.SV.W.0083.000000T0000Z-190816T2215Z/
Niagara NY-Orleans NY-Genesee NY-
529 PM EDT Fri Aug 16 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR EAST CENTRAL NIAGARA...WESTERN ORLEANS AND NORTHWESTERN GENESEE
COUNTIES...

At 528 PM EDT, a severe thunderstorm was located near Pembroke, or 10
miles north of Darien Lakes State Park, moving northeast at 10 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Medina, Albion, Byron, Oakfield, Shelby, Alabama, Elba, Barre Center,
Knowlesville and Millville.

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 4333 7831 4309 7801 4301 7837 4308 7846
      4309 7847 4308 7847 4311 7851
TIME...MOT...LOC 2128Z 235DEG 10KT 4306 7841 

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

Reynolds

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 8:55 PM EDT	Special Weather Statement	BUF	Wyoming	35 min
Aug 15, 9:00 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Erie, Wyoming	25 min
Aug 15, 9:20 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	55 min
Aug 15, 10:13 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	31 min
Aug 16, 12:37 PM EDT	Special Weather Statement	BUF	Wyoming	38 min
Aug 16, 2:01 PM EDT	Special Weather Statement	BUF	Ontario	44 min
Aug 16, 2:49 PM EDT	Special Weather Statement	BUF	Ontario	26 min
Aug 16, 4:42 PM EDT	Special Weather Statement	BUF	Genesee	63 min
Aug 16, 5:03 PM EDT	Special Weather Statement	BUF	Genesee	57 min
Aug 16, 5:15 PM EDT	Severe Thunderstorm Warning	BUF	Niagara	60 min
Aug 16, 5:37 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Wyoming	53 min
Aug 16, 5:52 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Orleans	53 min
Aug 16, 5:58 PM EDT	Severe Thunderstorm Warning	BUF	Niagara, Orleans	47 min
Aug 16, 6:07 PM EDT	Special Marine Warning	BUF		53 min
Aug 16, 6:41 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	64 min
Aug 16, 7:21 PM EDT	Special Weather Statement	BUF	Wayne	54 min
Aug 16, 7:55 PM EDT	Special Weather Statement	BUF	Cayuga	35 min

Nearby

Severe Thunderstorm Warnings in New York, 2019 Every severe thunderstorm warning in 2019

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.