Alert archive / New York / Tornado Warnings in 2021

Tornado Warning 2, NWS Buffalo, NY

October 15, 2021Chautauqua County, New York

NWS Buffalo, NY issued this tornado warning at Oct 15, 2021, 6:04 PM EDT for Chautauqua County, New York. It was in force for 26 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
Oct 15, 2021, 6:04 PM EDT (22:04 UTC)
Expired
Oct 15, 2021, 6:30 PM EDT
In force
26 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 88 km from the middle of the area, began a volume at 22:07 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
Oct 15, 6:28 PM EDTFUNNEL CLOUD3 N Cassadaga, NYVIDEO OF FUNNEL CLOUD FROM RT 60 NEAR SPODEN RD IN CASSADAGA.

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, 10.1 hours before the alert went out and 89 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 12:00Z on 2021-10-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2021-10-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
554 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
-28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

770 
WFUS51 KBUF 152204
TORBUF
NYC013-152230-
/O.NEW.KBUF.TO.W.0002.211015T2204Z-211015T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Buffalo NY
604 PM EDT Fri Oct 15 2021

The National Weather Service in Buffalo has issued a

* Tornado Warning for...
  Central Chautauqua County in western New York...

* Until 630 PM EDT.
    
* At 604 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Mayville, or 12 miles southwest of Fredonia,
  moving northeast at 25 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Dunkirk, Fredonia, Westfield, Mayville, Lake Erie State Park, SUNY
  Fredonia, Chautauqua Institution, Portland, Sheridan and Stockton.

This includes Interstate 90 between exits 60 and 59.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4219 7952 4234 7964 4256 7927 4237 7912
TIME...MOT...LOC 2204Z 239DEG 21KT 4231 7950 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Mitchell
1 follow-up statement
950 
WWUS51 KBUF 152219
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
619 PM EDT Fri Oct 15 2021

NYC013-152230-
/O.CON.KBUF.TO.W.0002.000000T0000Z-211015T2230Z/
Chautauqua NY-
619 PM EDT Fri Oct 15 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR
NORTHEASTERN CHAUTAUQUA COUNTY...
    
At 618 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Lake Erie State Park, or near Fredonia, moving
northeast at 25 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Dunkirk, Fredonia, Lake Erie State Park, SUNY Fredonia, Portland,
Sheridan, Stockton, Brocton, Arkwright and Cassadaga.

This includes Interstate 90 near exit 59.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4256 7927 4237 7912 4224 7943 4239 7956
TIME...MOT...LOC 2218Z 239DEG 21KT 4235 7940 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Mitchell

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 15, 1:27 PM EDTSmall Craft AdvisoryBUF5 days
Oct 15, 4:51 PM EDTSpecial Marine WarningBUF39 min
Oct 15, 5:28 PM EDTSpecial Weather StatementBUFErie47 min
Oct 15, 5:37 PM EDTSpecial Weather StatementBUFChautauqua23 min
Oct 15, 5:53 PM EDTSevere Thunderstorm WarningBUFChautauqua22 min
Oct 15, 6:15 PM EDTSevere Thunderstorm WarningBUFErie, Genesee, Livingston, Monroe, Wyoming45 min
Oct 15, 6:30 PM EDTSevere Thunderstorm WarningBUFChautauqua30 min

Nearby

Tornado Warnings in New York, 2021Every tornado warning in 2021Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.