Tornadoes · United States · West Virginia · 2003

F0 tornado, Summit Pt, West Virginia, July 9, 2003

This F0 tornado ran 4.0 miles across Jefferson County on July 9, 2003, touching down at 1:52 PM EDT and reaching 75 yards wide. It killed nobody.

The rating scale

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

  1. F040 to 72 mphthis tornado

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

  2. F173 to 112 mph

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

  3. F2113 to 157 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. F3158 to 206 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. F4207 to 260 mph

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

  6. F5261 to 318 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
F0
Date
July 9, 2003
Touchdown
1:52 PM EDT (17:52 UTC)
Path length
4.0 miles (6.4 km)
Path width
75 yards (69 m)
Deaths
0
Injuries
0
County
Jefferson County
Touchdown point
39.250, -77.780
Lift-off point
39.220, -77.900
Record number
604

What the Weather Service recorded

A thunderstorm that moved through during the early afternoon of the 9th produced an F0 tornado in southeast Jefferson County. The twister touched down near Summit Point and moved southeast on the ground for 4 miles before lifting near Rippon. Winds from the tornado estimated up to 70 MPH downed several trees and a handful of power lines along its path. Near Summit Point, an outbuilding was damaged. Siding was also removed from a house. Ten to twenty trees were downed onto Leetown Road about ½ mile south of Summit Point. Trees and power lines were also downed onto Darke Lane West near Rippon.

A tornado damaged buildings and trees along its 4 mile path.

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

The warnings

12 minutes of warning. NWS LWX issued a tornado warning for this county at 17:40 UTC, 12 minutes before the tornado touched down, in force until 18:30 UTC.

Issued (UTC)ExpiredProductOffice
17:32 UTC18:30 UTCSevere Thunderstorm WarningLWX
17:37 UTC18:30 UTCSevere Thunderstorm WarningLWX
17:40 UTC18:30 UTCTornado WarningLWX

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 13:09 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), 12:00Z

5.9 hours before the tornado, 49 km from the path. July 9, 2003.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2003-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 150 joules per kilogram, CIN -174, lifted condensation level 1569 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 2003-07-09The 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 46 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
150 J/kg
Mixed-layer CIN
-174 J/kg
Surface CAPE
135 J/kg
Mixed-layer LCL
1569 m above ground
0-6 km bulk shear
28 kt
0-1 km bulk shear
24 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.0 K/km

Open this sounding in Storm Lab

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

6.1 hours after it, 49 km from the path. July 10, 2003.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2003-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 12 joules per kilogram, CIN -89, lifted condensation level 995 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 00:00Z on 2003-07-10The 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 18 square meters per square second, 0 to 6 km bulk shear 31 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
12 J/kg
Mixed-layer CIN
-89 J/kg
Surface CAPE
209 J/kg
Mixed-layer LCL
995 m above ground
0-6 km bulk shear
31 kt
0-1 km bulk shear
8 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.9 K/km

Open this sounding in Storm Lab

The radar

The Sterling radar (KLWX), 42 km away, was scanning. The volume nearest the touchdown began at 17:51 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 trackEvery 2003 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 9, 2003

20 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
July 92:20 PM EDTF1Loudoun, VA10.0100
July 92:45 PM EDTF0Loudoun, VA0.575
July 93:30 PM CDTF0Stevens, MN3.050
July 94:25 PM ESTF0White, IN0.150
July 94:50 PM CDTF0Swift, MN0.125
July 95:00 PM CDTF1Swift, MN5.050$10,000
July 95:15 PM CDTF0Swift, MN0.125
July 95:40 PM CDTF0Blue Earth, MN0.125
July 95:44 PM CDTF0Hamilton, IA0.225
July 95:50 PM CDTF1Kandiyohi, MN3.0220$1.0 million
July 96:00 PM CDTF0Blue Earth, MN0.150
July 96:20 PM CDTF0Rice, KS1.050$10,000
July 96:22 PM CDTF0Champaign, IL0.110
July 96:55 PM CDTF0Reno, KS0.550
July 97:15 PM CDTF0Reno, KS0.550
July 97:20 PM CDTF0Kingman, KS1.050
July 97:30 PM CDTF0Sedgwick, KS0.550
July 97:30 PM CDTF1Kingman, KS5.0100$70,000
July 97:40 PM CDTF0Kingman, KS0.550
July 98:09 PM CDTF0Harper, KS1.075$30,000

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.