Alert archive / New York / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 80, NWS Buffalo, NY

August 15, 2019Cattaraugus County, Erie County, Wyoming County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 15, 2019, 9:00 PM EDT for Cattaraugus County, Erie County, Wyoming County, New York. It was in force for 25 min. 1 report 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 15, 2019, 9:00 PM EDT (01:00 UTC)
Expired: Aug 15, 2019, 9:25 PM EDT
In force: 25 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cattaraugus County, NY, Erie County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 49 km from the middle of the area, began a volume at 01:01 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 15, 9:06 PM EDT	TSTM WND DMG	Yorkshire, NY	TREES DOWN IN YORKSHIRE

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 00:00Z, 1.0 hours before the alert went out and 46 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: 24 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1196 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

460 
WUUS51 KBUF 160100
SVRBUF
NYC009-029-121-160145-
/O.NEW.KBUF.SV.W.0080.190816T0100Z-190816T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
900 PM EDT Thu Aug 15 2019

The National Weather Service in Buffalo has issued a

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

* Until 945 PM EDT..

* At 859 PM EDT, a severe thunderstorm was located near Arcade, or 19
  miles south of East Aurora, moving northeast at 20 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...
  Arcade, Chaffee, Yorkshire, Sardinia, Eagle, Delevan, Java Center,
  Bliss, Sandusky and North Java.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4251 7860 4271 7841 4266 7826 4256 7821
      4243 7853
TIME...MOT...LOC 0059Z 229DEG 17KT 4250 7849 

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

Hitchcock

2 follow-up statements

910 
WWUS51 KBUF 160117
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
917 PM EDT Thu Aug 15 2019

NYC009-029-160127-
/O.CAN.KBUF.SV.W.0080.000000T0000Z-190816T0145Z/
Cattaraugus NY-Erie NY-
917 PM EDT Thu Aug 15 2019

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

LAT...LON 4256 7846 4271 7841 4266 7826 4256 7821
      4252 7834 4253 7844
TIME...MOT...LOC 0117Z 229DEG 17KT 4256 7840 

$$

NYC121-160145-
/O.CON.KBUF.SV.W.0080.000000T0000Z-190816T0145Z/
Wyoming NY-
917 PM EDT Thu Aug 15 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR SOUTHWESTERN WYOMING COUNTY...

At 917 PM EDT, a severe thunderstorm was located over Arcade, or 18
miles southeast of East Aurora, moving northeast at 20 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...
Arcade, Eagle, Java Center, Bliss and North Java. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4256 7846 4271 7841 4266 7826 4256 7821
      4252 7834 4253 7844
TIME...MOT...LOC 0117Z 229DEG 17KT 4256 7840 

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

Hitchcock

373 
WWUS51 KBUF 160125
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
925 PM EDT Thu Aug 15 2019

NYC121-160135-
/O.CAN.KBUF.SV.W.0080.000000T0000Z-190816T0145Z/
Wyoming NY-
925 PM EDT Thu Aug 15 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WYOMING COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Buffalo.

LAT...LON 4256 7846 4271 7841 4266 7826 4256 7821
      4252 7834 4253 7844
TIME...MOT...LOC 0121Z 229DEG 17KT 4258 7836 

$$

Hitchcock

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, 9:20 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, 5:13 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans	62 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.