Alert archive / New York / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 71, NWS Buffalo, NY

August 8, 2019Allegany County, Cattaraugus County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 8, 2019, 12:53 PM EDT for Allegany County, Cattaraugus County, New York. It was in force for 54 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 8, 2019, 12:53 PM EDT (16:53 UTC)
Expired: Aug 8, 2019, 1:47 PM EDT
In force: 54 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

The radar

The Buffalo radar (KBUF), 109 km from the middle of the area, began a volume at 16:52 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 8, 1:00 PM EDT	TSTM WND DMG	Bolivar, NY	TREES AND WIRES DOWN IN BOLIVAR. TIME ESTIMATED.

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, 4.9 hours before the alert went out and 106 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: 39 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 1232 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

573 
WUUS51 KBUF 081653
SVRBUF
NYC003-009-081800-
/O.NEW.KBUF.SV.W.0071.190808T1653Z-190808T1800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1253 PM EDT Thu Aug 8 2019

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Southeastern Cattaraugus County in western New York...
  Southern Allegany County in western New York...

* Until 200 PM EDT..

* At 1253 PM EDT, a severe thunderstorm was located near Weston
  Mills, or near Olean, moving east at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Wellsville, Whitesville, Weston Mills, Scio, Bolivar, Andover,
  Portville, Alma, Richburg and Stannards.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4200 7840 4219 7838 4219 7774 4200 7775
TIME...MOT...LOC 1653Z 278DEG 28KT 4209 7830 

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

Levan

2 follow-up statements

867 
WWUS51 KBUF 081709
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
109 PM EDT Thu Aug 8 2019

NYC009-081719-
/O.CAN.KBUF.SV.W.0071.000000T0000Z-190808T1800Z/
Cattaraugus NY-
109 PM EDT Thu Aug 8 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CATTARAUGUS
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 4200 7823 4219 7820 4219 7774 4200 7775
TIME...MOT...LOC 1709Z 278DEG 28KT 4207 7813 

$$

NYC003-081800-
/O.CON.KBUF.SV.W.0071.000000T0000Z-190808T1800Z/
Allegany NY-
109 PM EDT Thu Aug 8 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EDT
FOR SOUTHERN ALLEGANY COUNTY...

At 109 PM EDT, a severe thunderstorm was located 7 miles north of
Shinglehouse, or 10 miles west of Wellsville, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Wellsville, Whitesville, Scio, Bolivar, Andover, Alma, Richburg,
Stannards, Paynesville and Little Genesee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4200 7823 4219 7820 4219 7774 4200 7775
TIME...MOT...LOC 1709Z 278DEG 28KT 4207 7813 

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

Levan

983 
WWUS51 KBUF 081747
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
147 PM EDT Thu Aug 8 2019

NYC003-081756-
/O.CAN.KBUF.SV.W.0071.000000T0000Z-190808T1800Z/
Allegany NY-
147 PM EDT Thu Aug 8 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ALLEGANY COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 4200 7823 4219 7820 4219 7774 4200 7775
TIME...MOT...LOC 1745Z 278DEG 28KT 4203 7774 

$$

Levan

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 10:41 PM EDT	Beach Hazards Statement	BUF	Chautauqua, Erie	22 hr
Aug 7, 10:42 PM EDT	Small Craft Advisory	BUF		71 hr
Aug 8, 4:33 AM EDT	Lakeshore Flood Warning	BUF	Cayuga, Jefferson, Oswego, Wayne	65 hr
Aug 8, 10:16 AM EDT	Special Marine Warning	BUF		59 min
Aug 8, 10:27 AM EDT	Special Marine Warning	BUF		63 min
Aug 8, 10:35 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	40 min
Aug 8, 10:39 AM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	66 min
Aug 8, 10:48 AM EDT	Severe Thunderstorm Warning	BUF	Erie	42 min
Aug 8, 10:58 AM EDT	Special Marine Warning	BUF		62 min
Aug 8, 11:15 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans	60 min
Aug 8, 11:39 AM EDT	Special Weather Statement	BUF	Cattaraugus	36 min
Aug 8, 11:45 AM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Erie, Wyoming	36 min
Aug 8, 11:50 AM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Orleans	55 min
Aug 8, 11:58 AM EDT	Special Marine Warning	BUF		62 min
Aug 8, 12:20 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario, Wayne	55 min
Aug 8, 12:24 PM EDT	Special Weather Statement	BUF	Allegany, Livingston	36 min
Aug 8, 12:30 PM EDT	Special Marine Warning	BUF		60 min
Aug 8, 12:38 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	67 min
Aug 8, 1:04 PM EDT	Special Marine Warning	BUF		86 min
Aug 8, 1:06 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Ontario, Oswego, Wayne	54 min
Aug 8, 1:50 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Jefferson, Oswego	70 min
Aug 8, 3:01 PM EDT	Special Weather Statement	BUF	Genesee	44 min
Aug 8, 4:23 PM EDT	Special Weather Statement	BUF	Erie	37 min
Aug 8, 4:50 PM EDT	Special Weather Statement	BUF	Wayne	40 min
Aug 8, 5:12 PM EDT	Special Weather Statement	BUF	Erie	48 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.