Tornadoes · United States · New York · 2011

EF1 tornado, Verona Mills to Churchville, New York, April 26, 2011

Name: EF1 tornado, Verona Mills to Churchville, New York, April 26, 2011
Start: 2011-04-26T20:20:00.000Z
End: 2011-04-26T20:23:00.000Z
Location: Verona Mills to Churchville, New York

From Verona Mills to Churchville, this EF1 tornado ran 0.9 miles across Oneida County on April 26, 2011, touching down at 4:20 PM EDT and reaching 65 yards wide. It killed nobody, and did $5,000 of property damage.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

EF065 to 85 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mphthis tornado
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
EF2111 to 135 mph
Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.
EF3136 to 165 mph
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
EF5over 200 mph
Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.
Unrated
The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating: EF1
Date: April 26, 2011
Touchdown: 4:20 PM EDT (20:20 UTC)
Lifted: 4:23 PM EDT (20:23 UTC)
On the ground: 3 minutes
Path length: 0.9 miles (1.4 km)
Path width: 65 yards (59 m)
Deaths: 0
Injuries: 0
Property damage: $5,000
County: Oneida County
Touchdown point: 43.200, -75.570
Lift-off point: 43.210, -75.580
Record number: 1104261420-01

What the Weather Service recorded

A slow moving warm front pushed northward across central New York late in the afternoon on April 25th. A warm and relatively moist air mass covered the region, with showers and storms developing, especially in the unstable air south of the frontal boundary, where breaks in the cloud cover allowed temperatures to rise to near 70 degrees. Severe weather developed, and in addition to reports of severe wind damage and hail, plenty of wind shear in the vicinity of the warm front allowed for a few super-cell thunderstorms and tornadoes to develop. In addition, areas of heavy rain caused significant flash flooding in several locations of central New York.

A brief touchdown of an EF-1 tornado occurred in a wooded area near the intersection of State Road 49 and Lauther Road near Verona Mills. Damage included multiple trees down and a snapped power pole.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The forecast that day

The Storm Prediction Center had this point in a Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 19:47 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

What forecasters said that day

The local office's own words before the tornado touched down, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Binghamton, NY wrote its last area forecast discussion before the tornado touched down at Apr 26, 2:26 PM EDT, 1 hour 54 minutes earlier.

Area forecast discussion, Apr 26, 2:26 PM EDT, 1 hour 54 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BINGHAMTON NY
226 PM EDT TUE APR 26 2011

.SYNOPSIS...
A WARM FRONT WILL MOVE SLOWLY NORTHWARD THROUGH THE REGION
TONIGHT...WITH ADDITIONAL SHOWERS AND THUNDERSTORMS EXPECTED. HIT
AND MISS SHOWERS AND THUNDERSTORMS WILL DOT THE AREA ON
WEDNESDAY...BEFORE MORE WIDESPREAD RAINFALL COMES BACK IN LATE
WEDNESDAY NIGHT AND THURSDAY...ALONG AN INCOMING COLD FRONT.

&&

.NEAR TERM /THROUGH TONIGHT/...
UPDATED AS OF 215 PM (1815Z)... CONVECTIVE LINE COMING INTO CNTRL
NY/N-CNTRL PA FROM THE W...SHOULD CONTINUE TO INTENSIFY LATE THIS
AFTN...AS IT ENCOUNTERS ML CAPES APPROACHING 1500...DEEP-LAYERED
SHEAR ARND 40 KT...AND STGLY VEERING LOW-LEVEL WIND PROFILES.
HRRR/OTHER MESO-SCALE CONVECTION-ALLOWING MODELS SUGGEST
ADDITIONAL LINEAR STRUCTURES WILL FOLLOW THIS ONE THROUGH THE
EARLY EVENING PD. SVR WW #213 IS NOW IN EFFECT FOR MOST OF CNTRL
NY/NE PA UNTIL 01Z WED.

SHRA/TSRA SHOULD DIMINISH LATER THIS EVE...AS UPPER-LVL FORCING
WANES...AND THE BLYR STABILIZES. AREAS OF LOW CIGS/FOG COULD FORM
OVERNIGHT...ESPECIALLY WHERE SIG RAINFALL OCCURS.

...PREVIOUS DISCUSSION...
UPDATED AS OF 10 AM (14Z)... VSBL SAT IMAGERY SHOWS MAINLY CLEAR
SKIES ACROSS NE PA LATE THIS MORNING...WITH MORE CLOUD DEBRIS UP
OVER CNTRL NY. SFC ANALYSIS WOULD PLACE THE WARM FRNTL BOUNDARY
NEAR THE PA/NY BORDER...MOVING GRADUALLY NWD. STG INSOLATION OVER
NE PA/PTNS OF NY'S SRN TIER THROUGH EARLY-MID AFTN SHOULD PROMOTE
FAIRLY ROBUST DESTABILIZATION. IN FACT...MODIFYING THE 12Z PIT
SOUNDING WOULD POTENTIALLY YIELD ML CAPES OF 1000-1500. IF YOU
COMBINE THIS WITH STRENGTHENING/VEERING WIND PROFILES IN THE LOW-
MID LEVELS (NEAR ABV MENTIONED WARM FRONT)...STG/SVR CONVECTION
AGAIN SEEMS LIKE A POSSIBILITY THIS AFTN/EVE.

AS FAR AS ANY TRIGGERING MECHANISMS GO...PVA ON THE LEADING EDGE
OF A PROBABLE CONVECTIVELY-INDUCED UPPER-LVL WAVE...WAS LEADING TO
SCATTERED SHRA/TSRA AS OF LATE MORNING IN WRN PA/NY...WITH MORE
ISOLD ACTIVITY OVER THE FINGER LAKES/MOHAWK VALLEY AREAS. BY MID-
LATE AFTN...WE EXPECT SCATTERED SHRA/TSRA ACROSS OUR WRN/NRN
ZONES...ASSOCD WITH THE PREVIOUSLY MENTIONED SHRT WV...AND
ADDITIONAL ACTIVITY OVER NE PA/WRN CATSKILLS...CLOSER TO THE
925-850 MB THETA-E RIDGE AXIS. THIS ACTIVITY WILL LIKELY LINGER
WELL INTO THE EVE HOURS.

MAX TEMP FORECAST FOR THIS AFTN SEEMS ON TRACK...AS 925/850 TEMPS
AND EXPECTED MIXING LEVELS SUPPORT 75-80F.

&&

.SHORT TERM /WEDNESDAY THROUGH FRIDAY/...
UPDATED AS OF 220 PM (1820Z)... THIS WILL BE BRIEF...OWING TO
NEAR-TERM SVR WX CONCERNS.

WARM SECTOR AMS WILL REMAIN IN PLACE WED...ALTHOUGH SOMEWHAT LESS
INSTABILITY IS PROGGED...AS OPPOSED TO WHAT WE'RE SEEING TODAY. A
SUBTLE UPPER-LVL WAVE IS EXPECTED TO APPROACH FROM THE SW BY
18Z...WITH AT LEAST SCATTERED SHRA/TSRA ANTICIPATED TO RE-DEVELOP
BY THEN.

LATE WED NIGHT AND THU...WE'RE STILL EXPECTING THE MAIN UPPER-LVL
TROUGH AXIS AND COLD FRONT TO COME IN FROM THE W. EXPECTED
TIMING...AS OF THIS JUNCTURE...WOULD BRING THESE SYSTEMS THROUGH
EARLIER THU...GENERALLY 12-18Z...AND THIS TIMING COULD REDUCE THE
SVR THREAT. HOWEVER...ANY DEVIATION AT ALL...WOULD AT LEAST PLACE
THE ERN HALF OF THE CWA UNDER THE GUN FOR POTENTIAL SVR TSRA THU
AFTN...AS STG FORCING WILL BE AT PLAY. AT ANY RATE...LIKELY POPS
WILL STILL BE UTILIZED THIS PD...EVENTUALLY TAPERING OFF FROM W TO
E BY LATER IN THE DAY THU.

&&

.LONG TERM /FRIDAY NIGHT THROUGH MONDAY/...
WE HAVE FOLLOWED HPC GUIDANCE FOR THE MED RNG. CRNT ACTIVE WX
PRECLUDES IN DEPTH DISCUSSION...XPCT LINGERING -SHRA ON
FRIDAY...THEN DRY WX SAT AND SAT NGT. NXT FNTL SYSTEM APRCHS AND
WENT WITH SLOWER SOLUTION PREFERRED BY HPC...WITH A CHC FOR -SHRA
SUN THRU TUE.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
XPCT TSRA TO AFFECT CNTRL AND NRN SITES THIS AFTN...SYR IN PATH OF
STRONG STORMS IN THE 19-20Z TIME FRAME...AND PSBLY RME AN HR
LATER. WENT WITH CB GROUPS WITH A TEMPO FOR TSRA AT OTHER SITES
LATE THIS AFTN OR EVNG...WITH POTNL FOR TSRA INTO THE EVNG HRS.
LATER TNGT...XPCT 3-5SM VSBYS IN BR...AND ELM LIKELY TO GO IFR
LATER TNGT IN FOG. GNRLY VFR AFTER 14Z WED MRNG...WITH SOME
LINGERING MVFR IN BR...WITH CHC ONCE AGAIN FOR STRONG TSRA TMRW
AFTN.

OUTLOOK...

WED/WED NGT...SCT MVFR IN TSRA.

THU NGT/FRI/FRI NGT...SCT MVFR MAINLY CNTRL NY IN SCT SHRA.

SUN...MVFR IN SCT -SHRA.

SAT...MAINLY VFR.

&&

.BGM WATCHES/WARNINGS/ADVISORIES...
PA...NONE.
NY...NONE.

&&

SYNOPSIS...MLJ
NEAR TERM...MLJ
SHORT TERM...MLJ
LONG TERM...
AVIATION...

Hazardous weather outlook, Apr 26, 2:03 PM EDT, 2 hours 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BINGHAMTON NY
203 PM EDT TUE APR 26 2011

NYZ009-015>018-022>025-036-037-044>046-055>057-PAZ038>040-043-044-
047-072-271815-
NORTHERN ONEIDA-YATES-SENECA-SOUTHERN CAYUGA-ONONDAGA-STEUBEN-
SCHUYLER-CHEMUNG-TOMPKINS-MADISON-SOUTHERN ONEIDA-CORTLAND-CHENANGO-
OTSEGO-TIOGA-BROOME-DELAWARE-BRADFORD-SUSQUEHANNA-NORTHERN WAYNE-
WYOMING-LACKAWANNA-LUZERNE-SOUTHERN WAYNE-
203 PM EDT TUE APR 26 2011

...SEVERE THUNDERSTORM WATCH 213 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW YORK AND
NORTHEAST PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NYZ062-PAZ048-271815-
SULLIVAN-PIKE-
203 PM EDT TUE APR 26 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEASTERN NEW YORK AND
NORTHEAST PENNSYLVANIA.

.DAY ONE...LATE THIS AFTERNOON AND TONIGHT.

A WARM FRONT IN THE VICINITY...ALONG WITH AN UNSTABLE AIR
MASS...WILL PRODUCE SCATTERED THUNDERSTORMS THROUGH THIS EVENING.
A FEW OF THESE STORMS COULD BECOME SEVERE...WITH LARGE HAIL AND
DAMAGING WINDS THE PRIMARY THREATS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

MJ

In the hours before

Special weather statement, Apr 26, 3:54 PM EDT, 26 minutes before

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Local storm report, Apr 26, 3:56 PM EDT, 24 minutes before

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Local storm report, Apr 26, 3:58 PM EDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
358 PM EDT TUE APR 26 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0345 PM     HAIL             EAST SYRACUSE           43.06N  76.07W
04/26/2011  E1.00 INCH       ONONDAGA           NY   PUBLIC

&&

MJN

Local storm report, Apr 26, 4:02 PM EDT, 18 minutes before

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Local storm report, Apr 26, 4:06 PM EDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
406 PM EDT TUE APR 26 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0402 PM     TSTM WND GST     CHITTENANGO             43.05N  75.87W
04/26/2011  M64 MPH          MADISON            NY   MESONET

&&

PN

Local storm report, Apr 26, 4:07 PM EDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
407 PM EDT TUE APR 26 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0349 PM     HAIL             KIRKVILLE               43.07N  75.97W
04/26/2011  E1.00 INCH       ONONDAGA           NY   PUBLIC

&&

MJN

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Albany, NY (KALY), 12:00Z

8.3 hours before the tornado, 153 km from the path. April 26, 2011.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.

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. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: -69314 J/kg
Surface CAPE: 0 J/kg
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 40 kt
0-1 km bulk shear: 25 kt
0-1 km storm-relative helicity: 191 m²/s²
0-3 km storm-relative helicity: 191 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0
0-3 km lapse rate: 3.3 K/km

Open this sounding in Storm Lab

Albany, NY (KALY), 00:00Z

3.7 hours after it, 153 km from the path. April 27, 2011.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.

Hodograph

Mixed-layer CAPE: 168 J/kg
Mixed-layer CIN: -74 J/kg
Surface CAPE: 436 J/kg
Mixed-layer LCL: 1821 m above ground
0-6 km bulk shear: 37 kt
0-1 km bulk shear: 25 kt
0-1 km storm-relative helicity: 225 m²/s²
0-3 km storm-relative helicity: 240 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9
0-3 km lapse rate: 7.5 K/km

Open this sounding in Storm Lab

The surface observations

Griffiss AFB / Rome (RME), 15 km from the path, in the two hours either side.

Time (UTC)	Temp (°F)	Dew point (°F)	Wind	Gust (kt)	Pressure (mb)	Weather
00:00 UTC

From the Iowa Environmental Mesonet's archive of airport observations.

The radar

The Ft Drum radar (KTYX), 62 km away, was scanning. The volume nearest the touchdown began at 20:20 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

This ground now

The live radar over the track Every 2011 tornado in New York Every tornado in New York since 1950 Warnings in force in New York now The forecast where you are

The other tornadoes of April 26, 2011

58 more were confirmed in the United States that day.

Date	Time	Rating	Where	Path (mi)	Width (yd)	Injuries	Damage
April 26	1:05 AM CDT	EF3	Christian, KY	2.6	300		$1.0 million
April 26	2:02 AM CDT	EF2	Warrick, IN	4.5	300		$90,000
April 26	3:09 AM EDT	EF1	Pike, IN	0.5	225		$110,000
April 26	6:41 AM CDT	EF1	Covington, MS	0.3	50		$45,000
April 26	7:12 AM CDT	EF1	Jones, MS	1.2	100		$180,000
April 26	2:15 PM EDT	EF0	Martin, NC	0.1	30		$500
April 26	1:40 PM CDT	EF0	Bailey, TX	0.8	50
April 26	5:44 PM EDT	EF0	Allegan, MI	3.3	50		$1.0 million
April 26	4:56 PM CDT	EF0	Kaufman, TX	5.1	500		$5,000
April 26	5:14 PM CDT	EF1	Lonoke, AR	8.3	800		$1.8 million
April 26	5:45 PM CDT	EF1	Van Zandt, TX	13.9	880	1	$200,000
April 26	5:46 PM CDT	EF0	Sequoyah, OK	0.1	50
April 26	5:55 PM CDT	EF0	Crawford, AR	0.2	75
April 26	6:01 PM CDT	EF0	Kaufman, TX	5.1	400		$30,000
April 26	7:05 PM EDT	EF0	Saint Lucie, FL	0.1	15
April 26	6:10 PM CDT	EF0	Phillips, AR to MS	27.9	200		$92,000
April 26	6:23 PM CDT	EF0	Kaufman, TX	1.0	100
April 26	6:29 PM CDT	EF0	Phillips, AR to MS	30.8	200		$75,000
April 26	6:32 PM CDT	EF1	Faulkner, AR	12.9	200		$40,000
April 26	6:35 PM CDT	EF1	Rusk, TX	13.9	100		$10,000
April 26	7:00 PM CDT	EF0	Wood, TX	3.4	50
April 26	7:04 PM CDT	EF2	Harrison, TX	5.2	400		$300,000
April 26	7:15 PM CDT	EF0	Navarro, TX	0.4	100
April 26	7:17 PM CDT	EF1	Polk, AR	0.8	50		$20,000
April 26	7:18 PM CDT	EF2	Grayson, KY	3.0	440
April 26	7:19 PM CDT	EF0	Grayson, KY	0.3	60
April 26	7:24 PM CDT	EF0	Harrison, TX	6.0	70
April 26	7:34 PM CDT	EF0	Bossier Parish, LA	3.6	50
April 26	7:35 PM CDT	EF1	Limestone, TX	0.9	75		$150,000
April 26	7:46 PM CDT	EF2	Panola, TX to LA	42.4	850	2	$10 million
April 26	7:48 PM CDT	EF0	Limestone, TX	0.7	100
April 26	7:49 PM CDT	EF0	Smith, TX	3.2	60
April 26	7:49 PM CDT	EF0	Smith, TX	3.2	60
April 26	8:53 PM EDT	EF1	Hardin, KY	0.7	125
April 26	8:06 PM CDT	EF0	Caldwell, KY	0.3	50
April 26	8:27 PM CDT	EF0	Hardeman, TN	1.5	150		$15,000
April 26	8:28 PM CDT	EF0	McLennan, TX	0.4	50
April 26	9:35 PM EDT	EF1	Otsego, NY	4.8	150		$100,000
April 26	8:53 PM CDT	EF0	McLennan, TX	1.5	100
April 26	8:54 PM CDT	EF1	Webster Parish, LA	6.5	150		$100,000
April 26	8:54 PM CDT	EF0	Chester, TN	8.2	25		$75,000
April 26	9:00 PM CDT	EF0	Hopkins, KY	0.2	50		$2,000
April 26	9:25 PM CDT	EF1	Bienville Parish, LA	5.3	100
April 26	9:31 PM CDT	EF0	Lincoln Parish, LA	6.0	80
April 26	9:45 PM CDT	EF1	Claiborne Parish, LA to AR	26.5	100		$20,000
April 26	9:50 PM CDT	EF0	Jackson Parish, LA	5.2	70
April 26	9:57 PM CDT	EF0	Limestone, TX	0.7	100
April 26	10:33 PM CDT	EF0	Ouachita Parish, LA	1.9	50		$200
April 26	10:44 PM CDT	EF0	Morehouse Parish, LA	2.5	75		$20,000
April 26	10:45 PM CDT	EF1	Morehouse Parish, LA to AR	12.0	440	1	$60,000
April 26	10:55 PM CDT	EF1	Red River Parish, LA	3.5	125		$150,000
April 26	12:03 AM CDT	EF2	West Carroll Parish, LA	11.0	880		$650,000
April 26	12:27 AM CDT	EF2	Sabine Parish, LA	17.4	300		$1.0 million
April 26	12:35 AM CDT	EF0	Sharkey, MS	2.2	100		$15,000
April 26	12:42 AM CDT	EF1	Sabine Parish, LA	4.7	880
April 26	12:42 AM CDT	EF1	Natchitoches Parish, LA	8.0	880		$2.0 million
April 26	12:43 AM CDT	EF2	Sunflower, MS	11.8	440	3	$300,000
April 26	12:56 AM CDT	EF2	Natchitoches Parish, LA	25.1	880		$300,000

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.