Alert archive / New York / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 64, NWS Buffalo, NY

August 8, 2019Cattaraugus County, Chautauqua County, Erie County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 8, 2019, 10:39 AM EDT for Cattaraugus County, Chautauqua County, Erie County, New York. It was in force for 66 min. 3 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 8, 2019, 10:39 AM EDT (14:39 UTC)
Expired: Aug 8, 2019, 11:45 AM EDT
In force: 66 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY

The radar

The Buffalo radar (KBUF), 71 km from the middle of the area, began a volume at 14:44 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, 10:44 AM EDT	MARINE TSTM WIND 48	Dunkirk, NY
Aug 8, 10:53 AM EDT	MARINE TSTM WIND 39	Dunkirk Airport, NY
Aug 8, 11:00 AM EDT	TSTM WND DMG	1 S Laona, NY	TREES AND LINES DOWN ON ROUTE 60 AT ROUTE 83

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, 2.7 hours before the alert went out and 72 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.

834 
WUUS51 KBUF 081439
SVRBUF
NYC009-013-029-081545-
/O.NEW.KBUF.SV.W.0064.190808T1439Z-190808T1545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1039 AM EDT Thu Aug 8 2019

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Northwestern Cattaraugus County in western New York...
  Southern Erie County in western New York...
  Chautauqua County in western New York...

* Until 1145 AM EDT..

* At 1039 AM EDT, severe thunderstorms were located along a line
  extending from 17 miles northwest of Angola on the Lake to Findley
  Lake, moving east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  West Seneca, Jamestown, Lackawanna, Dunkirk, Fredonia, Hamburg,
  East Aurora, Evans, Boston and Eden.

 This includes the following highways...
 Interstate 90 between exits 60 and 56.
 Interstate 86 between exits 4 and 16.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4215 7976 4237 7965 4244 7950 4253 7939
      4260 7919 4272 7909 4280 7892 4283 7893
      4281 7858 4205 7906 4206 7976
TIME...MOT...LOC 1439Z 274DEG 32KT 4276 7939 4213 7971 

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

Levan

2 follow-up statements

039 
WWUS51 KBUF 081514
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
1114 AM EDT Thu Aug 8 2019

NYC009-013-029-081545-
/O.CON.KBUF.SV.W.0064.000000T0000Z-190808T1545Z/
Cattaraugus NY-Erie NY-Chautauqua NY-
1114 AM EDT Thu Aug 8 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 AM EDT
FOR NORTHWESTERN CATTARAUGUS...SOUTHERN ERIE AND CHAUTAUQUA
COUNTIES...

At 1112 AM EDT, severe thunderstorms were located along a line 
extending from near Eden to Jamestown, with additional storms 
developing near Ripley. These storms were moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
West Seneca, Jamestown, Lackawanna, Dunkirk, Fredonia, Hamburg, East
Aurora, Evans, Boston and Eden.

 This includes the following highways...
 Interstate 90 between exits 60 and 56.
 Interstate 86 between exits 4 and 16.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4215 7976 4237 7965 4244 7950 4253 7939
      4260 7919 4272 7909 4280 7892 4283 7893
      4281 7858 4205 7906 4206 7976
TIME...MOT...LOC 1512Z 276DEG 37KT 4269 7892 4211 7926 

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

Levan

738 
WWUS51 KBUF 081540
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
1140 AM EDT Thu Aug 8 2019

NYC009-013-029-081550-
/O.EXP.KBUF.SV.W.0064.000000T0000Z-190808T1545Z/
Cattaraugus NY-Erie NY-Chautauqua NY-
1140 AM EDT Thu Aug 8 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CATTARAUGUS...
SOUTHERN ERIE AND CHAUTAUQUA COUNTIES WILL EXPIRE AT 1145 AM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 4215 7976 4237 7965 4244 7950 4253 7939
      4260 7919 4272 7909 4280 7892 4283 7893
      4281 7858 4205 7906 4206 7976
TIME...MOT...LOC 1540Z 274DEG 32KT 4267 7860 4209 7894 

$$

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, 10:48 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, 12:53 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	54 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.