Tornadoes · United States · North Carolina · 2011

EF2 tornado, Columbia, North Carolina, August 26, 2011

This EF2 tornado ran 0.5 miles across Tyrrell County on August 26, 2011, touching down at 11:55 PM EDT and reaching 50 yards wide. It killed nobody, and did $150,000 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.

  1. EF065 to 85 mph

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. EF186 to 110 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. EF2111 to 135 mphthis tornado

    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.

  4. 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.

  5. EF4166 to 200 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. 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.

  7. 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
EF2
Date
August 26, 2011
Touchdown
11:55 PM EDT (03:55 UTC)
Lifted
11:59 PM EDT (03:59 UTC)
On the ground
4 minutes
Path length
0.5 miles (0.8 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
Property damage
$150,000
County
Tyrrell County
Touchdown point
35.919, -76.223
Lift-off point
35.920, -76.215
Record number
1108262155-01

What the Weather Service recorded

Hurricane Irene made landfall during the morning of the 27th, near Cape Lookout, as a large category 1 hurricane on the Saffir/Simpson Hurricane Wind Scale. Due to the large size of the hurricane, strong damaging winds, major storm surge, and flooding rains were experienced across much of eastern North Carolina. Several destructive tornados occurred during the evening of the 26th associated with the hurricane. Millions of dollars in damages were reported across the area. Property and crop damages were estimated to be 381 million dollars. Storm surge damages were estimated at 240 million dollars. The lowest pressure, 950.6 millibars, was recorded in Duck at 2112 UTC on the 27th. The highest official sustained wind measured was 63 knots or 73 mph at Cedar Island at 1050 UTC on the 27th. The highest wind gust of 100 knots was recorded at the Cedar Island Ferry at 1150 UTC on the 27th. The highest storm surges of 8-11 feet occurred along the Pamlico Sound, and the lower reaches of the Neuse and Pamlico Rivers on the 27th. Storm total rainfall ranged from 5.2 to 15.74 inches across area with the heaviest rainfall across Pamlico, Beaufort, and Craven counties. Two direct fatalities occurred in Pitt County. One fatality was due to a fallen tree on a house, and a second fatality resulted when a man drove into a tree. There were two indirect fatalities as well. In Beaufort Co. a woman with a pre-existing medical condition had an emergency as the hurricane began and emergency personnel were unable to reach her for two hours due to downed trees and flooding. She passed away the following day. In Onslow County, a man died from a heart attack while boarding up prior to the hurricane.

Several manufactured homes were completely destroyed with the metal undercarriages severely mangled and twisted around tree trunks indicating a high end EF2 tornado with estimated winds of 130 mph.

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

The warnings

12 minutes of warning. NWS MHX issued a tornado warning for this county at 03:43 UTC, 12 minutes before the tornado touched down, in force until 04:15 UTC.

The county was under a tornado watch, issued at 00:15 UTC and running to 04:34 UTC.

Issued (UTC)ExpiredProductOffice
21:00 UTC01:52 UTCFlood WatchMHX
00:15 UTC04:34 UTCTornado WatchMHX
02:12 UTC08:15 UTCFlood WarningMHX
02:53 UTC03:45 UTCTornado WarningMHX
02:54 UTC03:30 UTCTornado WarningMHX
03:43 UTC04:15 UTCTornado WarningMHX
04:34 UTC15:00 UTCTornado WatchMHX
08:31 UTC14:30 UTCFlood WarningMHX
13:33 UTC01:30 UTCFlood WarningMHX
16:51 UTC22:45 UTCFlash Flood WarningMHX

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

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 00:30 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.

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.

Newport, NC (KMHX), 00:00Z

3.9 hours before the tornado, 140 km from the path. August 27, 2011.

Skew-T log-pSkew-T log-p diagram, Newport, NC at 00:00Z on 2011-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 148 joules per kilogram, CIN 0, lifted condensation level 445 meters above ground. Wind barbs in knots down the right edge.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. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Newport, NC at 00:00Z on 2011-08-27The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 361 square meters per square second, 0 to 6 km bulk shear 50 knots.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. 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
148 J/kg
Mixed-layer CIN
0 J/kg
Surface CAPE
274 J/kg
Mixed-layer LCL
445 m above ground
0-6 km bulk shear
50 kt
0-1 km bulk shear
45 kt
0-1 km storm-relative helicity
361 m²/s²
0-3 km storm-relative helicity
415 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.9
0-3 km lapse rate
4.9 K/km

Open this sounding in Storm Lab

Newport, NC (KMHX), 12:00Z

8.1 hours after it, 140 km from the path. August 27, 2011.

Skew-T log-pSkew-T log-p diagram, Newport, NC at 12:00Z on 2011-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 58 joules per kilogram, CIN -120, lifted condensation level 972 meters above ground. Wind barbs in knots down the right edge.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. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Newport, NC at 12:00Z on 2011-08-27The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity -266 square meters per square second, 0 to 6 km bulk shear 22 knots.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. 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
58 J/kg
Mixed-layer CIN
-120 J/kg
Surface CAPE
53 J/kg
Mixed-layer LCL
972 m above ground
0-6 km bulk shear
22 kt
0-1 km bulk shear
52 kt
0-1 km storm-relative helicity
-266 m²/s²
0-3 km storm-relative helicity
-35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.2 K/km

Open this sounding in Storm Lab

The surface observations

Edenton_northea (EDE), 34 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
01:55 UTC7775.250° 12 kt181007.5-RA
02:15 UTC777550° 11 kt191007.1-RA
02:35 UTC7774.6650° 11 kt201006.8RA
02:55 UTC7774.4840° 13 kt221006.4-RA
03:15 UTC76.8274.4850° 15 kt241005.4RA
03:35 UTC76.4674.6650° 14 kt231005.4RA
03:55 UTC76.2874.6650° 14 kt231005.1-RA
04:15 UTC76.4674.8440° 14 kt211004.4+RA
04:35 UTC76.6475.3850° 19 kt291003.7RA
04:55 UTC77.1875.7450° 13 kt231003.4RA
05:15 UTC7775.5650° 15 kt241002.7+RA
05:35 UTC7775.5640° 16 kt291001.4+RA

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

The radar

The Norfolk radar (KAKQ), 138 km away, was scanning. The volume nearest the touchdown began at 03:54 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.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
02:10 UTCTORNADOBelhavenBeaufort, NCPOSSIBLE TORNADO NEAR BELHAVEN WITH A TRAILER BLOWN OVER
02:15 UTCTORNADOBelhavenBeaufort, NCROOF BLOWN OFF EDGEWATER MOTORS DEALERSHIP
04:05 UTCTORNADOColumbiaTyrrell, NCPOSSIBLE TORNADO NEAR 1400 BLOCK OF HIGHWAY 64. STRUCTURAL DAMAGE TO BUILDINGS WITH INJURIES REPORTED.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2011 tornado in North CarolinaEvery tornado in North Carolina since 1950Warnings in force in North Carolina nowThe forecast where you are

The other tornadoes of August 26, 2011

3 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 261:45 PM MDTEF0El Paso, CO0.150
August 269:12 PM EDTEF1Beaufort, NC4.475$200,000
August 2610:12 PM EDTEF0Washington, NC0.150$75,000

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.