Tornadoes · United States · West Virginia · 2017

EF0 tornado, Charles Town, West Virginia, July 5, 2017

This EF0 tornado ran 0.3 miles across Jefferson County on July 5, 2017, touching down at 10:14 PM EDT and reaching 30 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 mphthis tornado

    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 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
EF0
Date
July 5, 2017
Touchdown
10:14 PM EDT (02:14 UTC)
Lifted
10:15 PM EDT (02:15 UTC)
On the ground
1 minutes
Path length
0.3 miles (0.4 km)
Path width
30 yards (27 m)
Deaths
0
Injuries
0
County
Jefferson County
Touchdown point
39.297, -77.844
Lift-off point
39.300, -77.847
Record number
1707052014-01

What the Weather Service recorded

A boundary passed through the area during the evening hours. Winds aloft changed direction with height and also increased near the boundary. A storm developed along the boundary and the rotation from the changing winds aloft caused an isolated tornado to develop.

The National Weather Service in Baltimore MD/Washington DC has|confirmed a weak tornado near Charles Town in Jefferson County WV on|July 05 2017.||A small tornado touched down at the entrance to the Jefferson|Crossing Shopping Center on Flowing Springs Road just north of |U.S. 340. The tornado damaged the sign at the entrance.||The tornado crossed Flowing Springs Road and damaged the roofing |of three barns and the door to a fourth barn located at Hollywood|Casino at Charles Town Races. One barn lost a section of roof|completely, leaving seven stalls exposed. Debris from the roof of|one barn was thrown into power lines, snapping a telephone pole.|Fencing was also damaged by debris from the roof. Projectile |impacts were also noted in nearby barn roofs from two- by-four |pieces of wood that were lofted by the tornado.||The tornado lifted as it crossed East Fifth Avenue near the|vehicle entrance to the barn area.||The tornado was captured on security camera footage at the|Hollywood Casino at Charles Town Races. The footage showed|sections of barn roof being lifted and spun into the air.||Velocity data from the FAA Terminal Doppler Radar located near|Leesburg, VA that serves Washington Dulles International Airport |corroborated these impacts with a brief, weak shear signature |from 2014 to 2015 UTC.

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

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

Issued (UTC)ExpiredProductOffice
17:18 UTC05:57 UTCFlash Flood WatchLWX

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 General Thunderstorms Risk. The outlook in force was issued at 00:57 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.

Washington/Dulle, VA (KIAD), 00:00Z

2.2 hours before the tornado, 55 km from the path. July 6, 2017.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2017-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 16 joules per kilogram, CIN -70, lifted condensation level 664 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 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, Washington/Dulle, VA at 00:00Z on 2017-07-06The 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 -55 square meters per square second, 0 to 6 km bulk shear 25 knots.1939Sfc1 km3 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
16 J/kg
Mixed-layer CIN
-70 J/kg
Surface CAPE
1 J/kg
Mixed-layer LCL
664 m above ground
0-6 km bulk shear
25 kt
0-1 km bulk shear
16 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.6 K/km

Open this sounding in Storm Lab

Washington/Dulle, VA (KIAD), 12:00Z

9.8 hours after it, 55 km from the path. July 6, 2017.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2017-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 227 joules per kilogram, CIN -1, lifted condensation level 468 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, Washington/Dulle, VA at 12:00Z on 2017-07-06The 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 33 square meters per square second, 0 to 6 km bulk shear 28 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
227 J/kg
Mixed-layer CIN
-1 J/kg
Surface CAPE
262 J/kg
Mixed-layer LCL
468 m above ground
0-6 km bulk shear
28 kt
0-1 km bulk shear
6 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2
0-3 km lapse rate
4.9 K/km

Open this sounding in Storm Lab

The radar

The Sterling radar (KLWX), 47 km away, was scanning. The volume nearest the touchdown began at 02:15 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
00:15 UTCTORNADO1 Ene RansonJefferson, WVBRIEF EF-0 TORNADO. SIGN DAMAGED AT JEFFERSON CROSSING SHOPPING CENTER. BARNS DAMAGED AT HOLLYWOOD CASINO AT CHARLES TOWN RACES.

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 West VirginiaEvery tornado in West Virginia since 1950Warnings in force in West Virginia nowThe forecast where you are

The other tornadoes of July 5, 2017

2 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
July 56:58 PM CDTEF1Carroll, TN1.5200$750,000
July 58:58 PM CDTEF0Humphreys, TN3.675$10,000

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.