Tornadoes · United States · Virginia · 2018

EF0 tornado, Cash to Glenns, Virginia, October 11, 2018

From Cash to Glenns, this EF0 tornado ran 2.8 miles across Gloucester County on October 11, 2018, touching down at 7:47 PM EDT and reaching 100 yards wide. It killed nobody, and did $10,000 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 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
October 11, 2018
Touchdown
7:47 PM EDT (23:47 UTC)
Lifted
7:48 PM EDT (23:48 UTC)
On the ground
1 minutes
Path length
2.8 miles (4.5 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
0
Property damage
$10,000
County
Gloucester County
Touchdown point
37.523, -76.609
Lift-off point
37.564, -76.613
Record number
1810111747-01

The damage survey

11 damage points were recorded along this path by NWS AKQ, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 88 mph.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

What the Weather Service recorded

Tropical Cyclone Michael tracked from South Carolina northeast and off the Mid Atlantic Coast from Thursday morning, October 11 into early Friday morning, October 12. Scattered severe thunderstorms associated with the Tropical Cyclone produced seven tornadoes across portions of central and eastern Virginia.

A tornado touched down on Pampa Road in northern Gloucester County before moving to the north-northwest and downing numerous trees. The tornado then lifted near the intersection of Route 17 and Glenns Road.

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

The warnings

4 minutes of warning. NWS AKQ issued a tornado warning for this county at 23:43 UTC, 4 minutes before the tornado touched down, in force until 00:15 UTC.

The county was under a tornado watch, issued at 13:58 UTC and running to 00:50 UTC.

Issued (UTC)ExpiredProductOffice
13:58 UTC00:50 UTCTornado WatchAKQ
14:00 UTC19:00 UTCCoastal Flood StatementAKQ
18:00 UTC06:22 UTCFlash Flood WatchAKQ
22:00 UTC23:14 UTCWind AdvisoryAKQ
23:14 UTC10:54 UTCHigh Wind WarningAKQ
23:20 UTC23:45 UTCTornado WarningAKQ
23:22 UTC23:45 UTCTornado WarningAKQ
23:43 UTC00:15 UTCTornado WarningAKQ
00:12 UTC06:15 UTCFlash Flood WarningAKQ
01:49 UTC03:39 UTCCoastal Flood AdvisoryAKQ
03:39 UTC08:00 UTCCoastal Flood WarningAKQ

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 19:37 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.

Wallops Is Stn, VA (KWAL), 12:00Z

11.8 hours before the tornado, 115 km from the path. October 11, 2018.

Skew-T log-pSkew-T log-p diagram, Wallops Is Stn, VA at 12:00Z on 2018-10-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 983 joules per kilogram, CIN 0, lifted condensation level 467 meters above ground. Wind barbs in knots down the right edge.LCLEL10008507005003002001001 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, Wallops Is Stn, VA at 12:00Z on 2018-10-11The 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 135 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
983 J/kg
Mixed-layer CIN
0 J/kg
Surface CAPE
734 J/kg
Mixed-layer LCL
467 m above ground
0-6 km bulk shear
28 kt
0-1 km bulk shear
24 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.8
0-3 km lapse rate
5.2 K/km

Open this sounding in Storm Lab

Wallops Is Stn, VA (KWAL), 00:00Z

0.2 hours after it, 115 km from the path. October 12, 2018.

Skew-T log-pSkew-T log-p diagram, Wallops Is Stn, VA at 00:00Z on 2018-10-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 959 joules per kilogram, CIN -11, lifted condensation level 634 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, Wallops Is Stn, VA at 00:00Z on 2018-10-12The 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 212 square meters per square second, 0 to 6 km bulk shear 49 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
959 J/kg
Mixed-layer CIN
-11 J/kg
Surface CAPE
985 J/kg
Mixed-layer LCL
634 m above ground
0-6 km bulk shear
49 kt
0-1 km bulk shear
31 kt
0-1 km storm-relative helicity
212 m²/s²
0-3 km storm-relative helicity
200 m²/s²
Significant tornado parameter
1.1
Supercell composite
4.3
0-3 km lapse rate
4.7 K/km

Open this sounding in Storm Lab

The surface observations

West_point (FYJ), 14 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
21:55 UTC787790° 16 kt997.3
22:15 UTC7877100° 14 kt18996.6
22:35 UTC77.47780° 14 kt19995.9
22:55 UTC77.27770° 12 kt23994.9
23:15 UTC7776.870° 15 kt20993.9
23:35 UTC77.276.570° 17 kt26993.2
23:50 UTC77.276.3100° 11 kt31992.6
00:15 UTC75.775.2100° 8 kt15991.9
00:35 UTC75.274.860° 8 kt16991.2
00:55 UTC75.27560° 5 kt990.9
01:10 UTC74.874.8280° 3 kt990.5
01:35 UTC73.473.2310° 7 kt989.5

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

The radar

The Norfolk radar (KAKQ), 71 km away, was scanning. The volume nearest the touchdown began at 23:46 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
23:02 UTCTORNADOLanexaNew Kent, VALAW ENFORCEMENT REPORTED STRUCTURAL DAMAGE TO FOUR HOUSES IN THE LANEXA AREA. REPORT RELAYED BY 911 CALL CENTER. TIME ESTIMATED FROM RADAR.
23:22 UTCTORNADO1 Ssw AchillesGloucester, VANUMEROUS TREES DOWN, SOME ON HOUSES ALONG CUBA RD NEAR 9389 CUBE RD.
23:23 UTCTORNADO1 S NorgeJames City, VATREE THOUGH A HOUSE AT 6801 ARTHUR HILL RD. POSSIBLE TORNADO.
23:25 UTCTORNADONorgeJames City, VAROOF BLOWN OFF BY A TORNADO NEAR CANDLESTICK STATION. TIME ESTIMATED FROM RADAR.
00:13 UTCTORNADO1 Nw JamaicaMiddlesex, VATREE DAMAGE FROM A LIKELY TORNADO AT 292 UNION SHILOH ROAD.
01:45 UTCFLASH FLOOD1 Se WarsawRichmond, VADISPATCHER RELAYED REPORTS OF ONGOING WATER RESCUES IN RICHMOND COUNTY.
02:06 UTCFLASH FLOOD1 Ene Saint Stephens ChKing And Queen, VAROUTE 360 CLOSED AT GREEN CHAMBERS ROAD.
02:10 UTCFLASH FLOOD1 Ne DunbrookeEssex, VAUS-620 CLOSED AT SUNNYSIDE ROAD.
02:10 UTCNON-TSTM WND GST 412 Se BarhamsvilleJames City, VAMESONET STATION AV245, 1 SE BARHAMSVILLE.
02:30 UTCFLASH FLOOD2 Ne Mount AiryJames City, VAUS-737 FLOODED AT OTEY DRIVE.
02:42 UTCNON-TSTM WND DMG2 N LottsburgNorthumberland, VALARGE MATURE PINE TREE SNAPPED. TIME ESTIMATED FROM NEARBY OBSERVATION AT LEWISETTA.

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

This ground now

The live radar over the trackEvery 2018 tornado in VirginiaEvery tornado in Virginia since 1950Warnings in force in Virginia nowThe forecast where you are

The other tornadoes of October 11, 2018

7 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
October 114:22 AM EDTEF0Richland, SC6.050
October 115:10 PM EDTEF1Nottoway, VA1.4175$150,000
October 115:27 PM EDTEF2Amelia, VA1.6150$250,000
October 117:02 PM EDTEF0New Kent, VA1.9150$50,000
October 117:22 PM EDTEF0Gloucester, VA0.9150$35,000
October 117:23 PM EDTEF1James City, VA2.1200$150,000
October 118:13 PM EDTEF0Middlesex, VA0.350$5,000

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.