Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 8, NWS Buffalo, NY

May 26, 2021Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 26, 2021, 2:05 PM EDT for Cattaraugus County, Chautauqua County, New York. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 26, 2021, 2:05 PM EDT (18:05 UTC)
Expired: May 26, 2021, 2:48 PM EDT
In force: 43 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Cattaraugus County, NY, Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 102 km from the middle of the area, began a volume at 18:06 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.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.1 hours before the alert went out and 102 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: 26 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 1679 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

438 
WUUS51 KBUF 261805
SVRBUF
NYC009-013-261900-
/O.NEW.KBUF.SV.W.0008.210526T1805Z-210526T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
205 PM EDT Wed May 26 2021

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Southwestern Cattaraugus County in western New York...
  Southeastern Chautauqua County in western New York...

* Until 300 PM EDT..

* At 205 PM EDT, a severe thunderstorm was located over Lakewood, or
  near Jamestown, moving east at 45 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Jamestown, Allegany State Park, Lakewood, Falconer, Jamestown West,
  Frewsburg, Busti, New Albion, Gerry and Conewango.

 This includes Interstate 86 between exits 9 and 18.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm has shown some rotation. While not imminent, a tornado is 
possible.

&&

LAT...LON 4212 7949 4235 7883 4205 7883 4200 7938
      4200 7945
TIME...MOT...LOC 1805Z 250DEG 37KT 4208 7936 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

Hitchcock

3 follow-up statements

629 
WWUS51 KBUF 261824
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
224 PM EDT Wed May 26 2021

NYC009-013-261900-
/O.CON.KBUF.SV.W.0008.000000T0000Z-210526T1900Z/
Cattaraugus NY-Chautauqua NY-
224 PM EDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR SOUTHWESTERN CATTARAUGUS AND SOUTHEASTERN CHAUTAUQUA COUNTIES...

At 224 PM EDT, a severe thunderstorm was located near Falconer, or
near Jamestown, moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Jamestown, Allegany State Park, Falconer, Frewsburg, New Albion,
Gerry, Conewango, Ellington, Randolph and Napoli.

 This includes Interstate 86 between exits 13 and 18.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4235 7883 4205 7883 4202 7919 4220 7925
TIME...MOT...LOC 1824Z 254DEG 34KT 4213 7914 

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

Hitchcock

320 
WWUS51 KBUF 261838
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
238 PM EDT Wed May 26 2021

NYC013-261848-
/O.CAN.KBUF.SV.W.0008.000000T0000Z-210526T1900Z/
Chautauqua NY-
238 PM EDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHAUTAUQUA 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 4231 7883 4205 7883 4203 7906 4224 7906
TIME...MOT...LOC 1838Z 250DEG 37KT 4218 7895 

$$

NYC009-261900-
/O.CON.KBUF.SV.W.0008.000000T0000Z-210526T1900Z/
Cattaraugus NY-
238 PM EDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR SOUTHWESTERN CATTARAUGUS COUNTY...

At 238 PM EDT, a severe thunderstorm was located 11 miles west of
Salamanca, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Allegany State Park, New Albion, Conewango, Randolph, Napoli, East
Randolph and Steamburg.

 This includes Interstate 86 between exits 15 and 18.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4231 7883 4205 7883 4203 7906 4224 7906
TIME...MOT...LOC 1838Z 250DEG 37KT 4218 7895 

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

Hitchcock

225 
WWUS51 KBUF 261848
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
248 PM EDT Wed May 26 2021

NYC009-261857-
/O.CAN.KBUF.SV.W.0008.000000T0000Z-210526T1900Z/
Cattaraugus NY-
248 PM EDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CATTARAUGUS
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 4231 7883 4205 7883 4203 7906 4224 7906
TIME...MOT...LOC 1846Z 250DEG 37KT 4221 7882 

$$

Hitchcock

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 10:19 AM EDT	Small Craft Advisory	BUF		9 hr
May 26, 11:17 AM EDT	Special Weather Statement	BUF	Livingston	28 min
May 26, 11:31 AM EDT	Special Weather Statement	BUF	Wayne	29 min
May 26, 11:44 AM EDT	Special Weather Statement	BUF	Livingston	16 min
May 26, 11:53 AM EDT	Special Marine Warning	BUF		52 min
May 26, 11:59 AM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	61 min
May 26, 12:03 PM EDT	Special Weather Statement	BUF	Allegany	27 min
May 26, 12:36 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	39 min
May 26, 12:57 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	63 min
May 26, 1:57 PM EDT	Special Weather Statement	BUF	Chautauqua	33 min
May 26, 4:25 PM EDT	Small Craft Advisory	BUF		16 hr

Nearby

Severe Thunderstorm Warnings in New York, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.