Alert archive / New York / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 82, NWS Buffalo, NY

August 15, 2019Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 15, 2019, 10:13 PM EDT for Chautauqua County, New York. It was in force for 31 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, 10:13 PM EDT (02:13 UTC)
Expired
Aug 15, 2019, 10:44 PM EDT
In force
31 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 90 km from the middle of the area, began a volume at 02:14 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

TimeReportWhereRemark
Aug 15, 10:25 PM EDTHAIL 1.251 Ese Mayville, NY

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, 2.2 hours before the alert went out and 90 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 00:00Z on 2019-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 24 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2019-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

040 
WUUS51 KBUF 160213
SVRBUF
NYC013-160315-
/O.NEW.KBUF.SV.W.0082.190816T0213Z-190816T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1013 PM EDT Thu Aug 15 2019

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Central Chautauqua County in western New York...

* Until 1115 PM EDT..

* At 1012 PM EDT, a severe thunderstorm was located over Chautauqua
  Institute, or 13 miles northwest of Jamestown, moving northeast at
  30 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Mayville, Chautauqua Institute, Bemus Point, Chautauqua, Stockton, 
  Brocton and Arkwright.

 This includes Interstate 86 between exits 7 and 10.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

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 4210 7945 4223 7960 4246 7936 4245 7917
      4233 7907
TIME...MOT...LOC 0212Z 226DEG 24KT 4218 7948 

HAIL...1.50IN
WIND...60MPH
 
$$

Hitchcock
2 follow-up statements
137 
WWUS51 KBUF 160234
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
1034 PM EDT Thu Aug 15 2019

NYC013-160315-
/O.CON.KBUF.SV.W.0082.000000T0000Z-190816T0315Z/
Chautauqua NY-
1034 PM EDT Thu Aug 15 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR NORTHEASTERN CHAUTAUQUA COUNTY...

At 1034 PM EDT, a severe thunderstorm was located 8 miles northeast
of Long Point State Park, or 10 miles south of Fredonia, moving
northeast at 30 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...
Dunkirk, Fredonia, SUNY Fredonia, Stockton, Arkwright, Cassadaga,
Sinclairville and Hamlet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

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 4220 7935 4228 7948 4246 7936 4245 7917
      4233 7907
TIME...MOT...LOC 0234Z 226DEG 24KT 4228 7934 

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

Apffel
126 
WWUS51 KBUF 160244
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
1044 PM EDT Thu Aug 15 2019

NYC013-160253-
/O.CAN.KBUF.SV.W.0082.000000T0000Z-190816T0315Z/
Chautauqua NY-
1044 PM EDT Thu Aug 15 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHAUTAUQUA 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 4220 7935 4228 7948 4246 7936 4245 7917
      4233 7907
TIME...MOT...LOC 0241Z 226DEG 24KT 4232 7928 

$$

Apffel

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 8:55 PM EDTSpecial Weather StatementBUFWyoming35 min
Aug 15, 9:00 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Erie, Wyoming25 min
Aug 15, 9:20 PM EDTSevere Thunderstorm WarningBUFChautauqua55 min
Aug 16, 12:37 PM EDTSpecial Weather StatementBUFWyoming38 min
Aug 16, 2:01 PM EDTSpecial Weather StatementBUFOntario44 min
Aug 16, 2:49 PM EDTSpecial Weather StatementBUFOntario26 min
Aug 16, 4:42 PM EDTSpecial Weather StatementBUFGenesee63 min
Aug 16, 5:03 PM EDTSpecial Weather StatementBUFGenesee57 min
Aug 16, 5:13 PM EDTSevere Thunderstorm WarningBUFErie, Genesee, Niagara, Orleans62 min
Aug 16, 5:15 PM EDTSevere Thunderstorm WarningBUFNiagara60 min
Aug 16, 5:37 PM EDTSevere Thunderstorm WarningBUFGenesee, Livingston, Monroe, Wyoming53 min
Aug 16, 5:52 PM EDTSevere Thunderstorm WarningBUFMonroe, Orleans53 min
Aug 16, 5:58 PM EDTSevere Thunderstorm WarningBUFNiagara, Orleans47 min
Aug 16, 6:07 PM EDTSpecial Marine WarningBUF53 min
Aug 16, 6:41 PM EDTSevere Thunderstorm WarningBUFOntario64 min
Aug 16, 7:21 PM EDTSpecial Weather StatementBUFWayne54 min
Aug 16, 7:55 PM EDTSpecial Weather StatementBUFCayuga35 min

Nearby

Severe Thunderstorm Warnings in New York, 2019Every 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.