Alert archive / New York / Tornado Warnings in 2010

Tornado Warning 4, NWS Buffalo, NY

June 27, 2010Allegany County, New York

NWS Buffalo, NY issued this tornado warning at Jun 27, 2010, 10:38 PM EDT for Allegany County, New York. It was in force for 37 min. 4 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
Jun 27, 2010, 10:38 PM EDT (02:38 UTC)
Expired
Jun 27, 2010, 11:15 PM EDT
In force
37 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

County Allegany County, NY

The radar

The Buffalo radar (KBUF), 119 km from the middle of the area, began a volume at 02:38 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
Jun 27, 10:42 PM EDTTSTM WND DMGSouth Bolivar, NYTREE DOWN ACROSS ROAD
Jun 27, 10:56 PM EDTTSTM WND DMGShongo, NYTREES AND POWERLINES DOWN
Jun 27, 11:10 PM EDTTSTM WND DMG2 S Whitesville, NYPATH OF TREES DOWN. BARN BLOWN OFF FOUNDATION.
Jun 27, 11:10 PM EDTTORNADO 12 S Whitesville, NYPATH OF TREES DOWN. BARN BLOWN OFF FOUNDATION. STORM SURVEY CONFIRMS EF1 TORNADO.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 27, 4:19 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.6 hours before the alert went out and 116 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 2010-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 736 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 2010-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 213 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
736 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
1039 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
213 m²/s²
0-3 km storm-relative helicity
319 m²/s²
Significant tornado parameter
1.4
Supercell composite
6.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

806 
WFUS51 KBUF 280238
TORBUF
NYC003-280315-
/O.NEW.KBUF.TO.W.0004.100628T0238Z-100628T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1038 PM EDT SUN JUN 27 2010

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN ALLEGANY COUNTY IN WESTERN NEW YORK...

* UNTIL 1115 PM EDT

* AT 1033 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 18 MILES
  SOUTHWEST OF STANNARDS...OR 13 MILES SOUTHEAST OF OLEAN...MOVING
  EAST AT 45 MPH.

* THE TORNADO WILL BE NEAR...
   STANNARDS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 4200 7817 4200 7824 4211 7792 4202 7773
      4199 7775 4199 7817
TIME...MOT...LOC 0238Z 250DEG 37KT 4199 7817

$$

ZAFF
2 follow-up statements
093 
WWUS51 KBUF 280258
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1058 PM EDT SUN JUN 27 2010

NYC003-280315-
/O.CON.KBUF.TO.W.0004.000000T0000Z-100628T0315Z/
ALLEGANY NY-
1058 PM EDT SUN JUN 27 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT FOR
SOUTHEASTERN ALLEGANY COUNTY...

AT 1055 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE
A SEVERE THUNDERSTORM WITH STRONG ROTATION.  THIS TORNADO WAS LOCATED
6 MILES SOUTHWEST OF STANNARDS...OR 7 MILES SOUTH OF WELLSVILLE...
MOVING NORTHEAST AT 40 MPH.

THE TORNADO SOME LOCATIONS IN THE WARNING INCLUDE...  
STANARD AND HALLSPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 4200 7806 4206 7805 4211 7792 4202 7773
      4199 7775
TIME...MOT...LOC 0257Z 248DEG 33KT 4205 7793

$$

RSH
335 
WWUS51 KBUF 280315
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1115 PM EDT SUN JUN 27 2010

NYC003-280325-
/O.EXP.KBUF.TO.W.0004.000000T0000Z-100628T0315Z/
ALLEGANY NY-
1115 PM EDT SUN JUN 27 2010

...THE TORNADO WARNING FOR SOUTHEASTERN ALLEGANY COUNTY HAS
EXPIRED...

AT 1115 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM WITH THE POSSIBLE TORNADO HAD EXITED THE WARNED AREA...
THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

MEANWHILE...OTHER STRONG THUNDERSTORMS ACROSS THE SOUTHERN PORTION 
OF ALLEGANY COUNTY ARE POTENTIALLY PRODUCING WIND GUSTS IN EXCESS OF 
58 MPH ALONG WITH TORRENTIAL DOWNPOURS. THIS ACTIVITY WILL PERSIST 
THROUGH MIDNIGHT.

LAT...LON 4200 7806 4206 7805 4211 7792 4202 7773
      4199 7775
TIME...MOT...LOC 0315Z 248DEG 33KT 4211 7772

$$

RSH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 8:00 PM EDTSevere Thunderstorm WarningBUFChautauqua25 min
Jun 27, 8:32 PM EDTSpecial Marine WarningBUF58 min
Jun 27, 8:54 PM EDTAreal Flood AdvisoryBUFErie, Niagara3 hr
Jun 27, 9:15 PM EDTSpecial Marine WarningBUF90 min
Jun 27, 10:58 PM EDTSevere Thunderstorm WarningBUFAllegany62 min
Jun 27, 11:17 PM EDTAreal Flood AdvisoryBUFAllegany3 hr
Jun 28, 11:54 AM EDTSpecial Weather StatementBUFChautauqua51 min
Jun 28, 12:20 PM EDTAreal Flood AdvisoryBUFOswego6 hr
Jun 28, 1:03 PM EDTAreal Flood AdvisoryBUFLivingston, Ontario, Wyoming3 hr
Jun 28, 3:08 PM EDTSpecial Marine WarningBUF52 min
Jun 28, 3:15 PM EDTSpecial Weather StatementBUFErie, Genesee, Niagara, Orleans60 min
Jun 28, 3:49 PM EDTSpecial Weather StatementBUFOrleans56 min
Jun 28, 5:55 PM EDTSpecial Weather StatementBUFOntario65 min
Jun 28, 6:51 PM EDTSpecial Marine WarningBUF84 min
Jun 28, 7:01 PM EDTSpecial Weather StatementBUFGenesee59 min
Jun 28, 7:56 PM EDTSpecial Marine WarningBUF34 min

Nearby

Tornado Warnings in New York, 2010Every tornado warning in 2010Tornadoes in 2010

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.