Tornadoes · United States · North Carolina · 2017

EF1 tornado, Gum Neck, North Carolina, May 23, 2017

This EF1 tornado ran 0.6 miles across Tyrrell County on May 23, 2017, touching down at 6:16 PM EDT and reaching 40 yards wide. It killed nobody.

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 mphthis tornado

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

  3. 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.

  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
EF1
Date
May 23, 2017
Touchdown
6:16 PM EDT (22:16 UTC)
Lifted
6:17 PM EDT (22:17 UTC)
On the ground
1 minutes
Path length
0.6 miles (1.0 km)
Path width
40 yards (37 m)
Deaths
0
Injuries
0
County
Tyrrell County
Touchdown point
35.706, -76.132
Lift-off point
35.714, -76.126
Record number
1705231616-01

What the Weather Service recorded

An EF1 tornado touched down just southeast of Gum Neck in Tyrrell County. Maximum estimated winds were 100 mph, with a path length of 0.6 mile and maximum path width of 40 yards.

The National Weather Service in Newport/Morehead City NC has confirmed|a tornado near Gum Neck in Tyrrell County North Carolina on May|23 2017.||A tornado touched down about one quarter mile southwest of the|intersection of South Gum Neck Road and Georgia Road, southeast of Gum|Neck. The tornado traveled northeast, first knocking down and snapping |trees before crossing South Gum Neck Road into a wheat field, flattening|the wheat crop along its path. The tornado then crossed Georgia Road, |knocking down a few trees including one large pecan tree near a|residence. One small barn also noted some metal roof damage. Maximum|winds are estimated at 100 mph, with a path length of 0.6 miles and|maximum path width of 40 yards. No injuries or fatalities occurred with|this tornado.

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

The warnings

35 minutes of warning. NWS MHX issued a tornado warning for this county at 21:41 UTC, 35 minutes before the tornado touched down, in force until 22:30 UTC.

Issued (UTC)ExpiredProductOffice
21:23 UTC23:00 UTCFlood AdvisoryMHX
21:41 UTC22:30 UTCTornado 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 Marginal Risk. The outlook in force was issued at 19:59 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), 12:00Z

10.3 hours before the tornado, 124 km from the path. May 23, 2017.

Skew-T log-pSkew-T log-p diagram, Newport, NC at 12:00Z on 2017-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 93 joules per kilogram, CIN -36, lifted condensation level 675 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 2017-05-23The 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 15 square meters per square second, 0 to 6 km bulk shear 20 knots.193958Sfc1 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
93 J/kg
Mixed-layer CIN
-36 J/kg
Surface CAPE
904 J/kg
Mixed-layer LCL
675 m above ground
0-6 km bulk shear
20 kt
0-1 km bulk shear
13 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3
0-3 km lapse rate
5.2 K/km

Open this sounding in Storm Lab

Newport, NC (KMHX), 00:00Z

1.7 hours after it, 124 km from the path. May 24, 2017.

Skew-T log-pSkew-T log-p diagram, Newport, NC at 00:00Z on 2017-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 99 joules per kilogram, CIN -52, lifted condensation level 571 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 2017-05-24The 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 208 square meters per square second, 0 to 6 km bulk shear 35 knots.193958Sfc1 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
99 J/kg
Mixed-layer CIN
-52 J/kg
Surface CAPE
495 J/kg
Mixed-layer LCL
571 m above ground
0-6 km bulk shear
35 kt
0-1 km bulk shear
34 kt
0-1 km storm-relative helicity
208 m²/s²
0-3 km storm-relative helicity
246 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4
0-3 km lapse rate
5.1 K/km

Open this sounding in Storm Lab

The surface observations

Dare County Gunnery Range (2DP), 21 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
20:29 UTC75.271.6210° 9 kt1006.1
20:44 UTC75.271.6210° 9 kt1006.1
20:56 UTC75.771.4190° 8 kt1006.1
21:31 UTC75.271.6190° 9 kt1005.8
21:46 UTC75.271.6200° 9 kt1005.8
21:48 UTC75.271.6200° 11 kt1005.8-RA
21:56 UTC74.371210° 13 kt1006.1-SHRA
22:05 UTC75.271.6210° 11 kt1006.1
22:15 UTC73.471.6210° 10 kt1006.1
22:19 UTC73.471.6200° 9 kt1006.1-SHRA
22:35 UTC73.471.6210° 9 kt1005.8
22:37 UTC73.471.6200° 10 kt1005.8-SHRA
22:52 UTC73.471.6210° 11 kt1005.8-SHRA
22:56 UTC7471210° 10 kt1005.8-SHRA
22:59 UTC73.471.6200° 9 kt1005.8
23:00 UTC73.471.6200° 10 kt1005.8-SHRA
23:15 UTC73.471.6210° 10 kt171005.4-SHRA
23:40 UTC73.469.8210° 13 kt1005.4-SHRA
23:56 UTC7370.2220° 13 kt1005.8-SHRA

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

The radar

The Morehead City radar (KMHX), 124 km away, was scanning. The volume nearest the touchdown began at 22:16 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
22:01 UTCFUNNEL CLOUDGum NeckTyrrell, NCPUBLIC REPORTED A FUNNEL CLOUD NEAR GUM NECK WITH SOME POSSIBLE DEBRIS
22:10 UTCTSTM WND DMGGum NeckTyrrell, NCPUBLIC REPORTED TREES DOWN... CROPS FLATTENED... AND TOPS TORN OUT OF TREES NEAR RESIDENCE IN GUM BRANCH. DAMAGE DUE TO POSSIBLE TORNADO. TIME BASED ON RADAR.
22:16 UTCTORNADO1 Se Gum NeckTyrrell, NCNWS STORM SURVEY CONFIRMS EF1 TORNADO DAMAGE JUST SE OF GUM NECK IN TYRRELL COUNTY. MAX ESTIMATED WINDS WERE 100 MPH... WITH A PATH LENGTH OF 0.6 MILES AND MAX PATH WIDTH OF 40 YARDS. NO INJURIES OR FATALITIES OCCURRED W

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

This ground now

The live radar over the trackEvery 2017 tornado in North CarolinaEvery tornado in North Carolina since 1950Warnings in force in North Carolina nowThe forecast where you are

The other tornadoes of May 23, 2017

11 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 2311:46 AM EDTEF0Randolph, GA10.250$2,000
May 2312:56 PM EDTEF1Lee, GA10.6100$50,000
May 231:46 PM EDTEF1Crisp, GA5.21502$100,000
May 232:00 PM EDTEF1Wilcox, GA1.650$500,000
May 233:38 PM EDTEF0Robeson, NC2.230$100,000
May 232:52 PM CDTEF0Whiteside, IL0.315
May 234:38 PM EDTEF1Sampson, NC13.71001$1.5 million
May 234:30 PM CDTEF0Christian, IL0.110
May 235:53 PM EDTEF2Chatham, GA7.5300
May 235:37 PM CDTEF0Bastrop, TX1.8200$100,000
May 238:05 PM CDTEF0Knox, IL0.110

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.