Tornadoes · United States · Virginia · 2017

EF1 tornado, Burr Hill, Virginia, May 5, 2017

This EF1 tornado ran 0.9 miles across Orange County on May 5, 2017, touching down at 8:17 AM EDT and reaching 100 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 5, 2017
Touchdown
8:17 AM EDT (12:17 UTC)
Lifted
8:18 AM EDT (12:18 UTC)
On the ground
1 minutes
Path length
0.9 miles (1.4 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
0
County
Orange County
Touchdown point
38.327, -77.903
Lift-off point
38.339, -77.898
Record number
1705050617-01

What the Weather Service recorded

Low pressure was located across the Tennessee Valley while a strong low level jet transported moisture into the Mid-Atlantic. Showers and thunderstorms developed across Virginia and the unstable atmosphere caused a few thunderstorms to become severe.

The National Weather Service Baltimore/Washington Weather Forecast located in Sterling, Virginia, has confirmed a tornado on May 5, 2017, near Bledsoe Corner in Orange County Virginia, which is about 11 miles southeast of Culpeper. Damage began on a property in the 27000 block of Old Musterfield Lane, where about a dozen large pine, maple, and cedar trees were snapped and uprooted in multiple directions in a convergent pattern. A stone wall was blown over, and some smaller objects were carried hundreds of yards. The tornado proceeded northeast over woods surrounding Cooke Lane where dozens of large trees were snapped and uprooted in multiple directions, where a home sustained siding and minor roofing damage from the wind. Several other homes and structures had damage from falling trees and tree limbs. The |tornado continued northeast through the woods until it came upon a cinder block garage. The wind entered the structure, lifted the roof off, and knocked down most of the walls. Debris was carried across Musterfield Road into a field. A few snapped trees were noted at the far end of the field. That was the last noted damage.||The National Weather Service would like to thank the residents who reported the damage and helped survey the area; along with the County of Orange Department of Fire and EMS, and the Virginia Department of Emergency Management for coordination.

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
10:14 UTC10:45 UTCSevere Thunderstorm 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 Marginal Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 05:30 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.

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

0.3 hours before the tornado, 81 km from the path. May 5, 2017.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2017-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 8 joules per kilogram, CIN -15, lifted condensation level 473 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 2017-05-05The 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 407 square meters per square second, 0 to 6 km bulk shear 53 knots.1939587897Sfc1 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
8 J/kg
Mixed-layer CIN
-15 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
473 m above ground
0-6 km bulk shear
53 kt
0-1 km bulk shear
37 kt
0-1 km storm-relative helicity
407 m²/s²
0-3 km storm-relative helicity
508 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.5 K/km

Open this sounding in Storm Lab

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

11.7 hours after it, 81 km from the path. May 6, 2017.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2017-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 425 joules per kilogram, CIN -2, lifted condensation level 736 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 2017-05-06The 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 76 square meters per square second, 0 to 6 km bulk shear 74 knots.1939587897117136Sfc1 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
425 J/kg
Mixed-layer CIN
-2 J/kg
Surface CAPE
608 J/kg
Mixed-layer LCL
736 m above ground
0-6 km bulk shear
74 kt
0-1 km bulk shear
14 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4
0-3 km lapse rate
6.5 K/km

Open this sounding in Storm Lab

The surface observations

Orange/Orange Co (OMH), 16 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
10:35 UTC62.660.8130° 7 kt15999.7-RA
10:55 UTC62.662.6130° 6 kt14999.3-RA
11:15 UTC64.462.6180° 11 kt19999.7+RA
11:35 UTC62.660.8170° 7 kt1000RA
11:55 UTC60.859170° 4 kt1000.3RA
12:15 UTC60.859160° 5 kt1000-RA
12:35 UTC60.859180° 5 kt999.3
12:55 UTC60.860.80° 0 kt999.3
13:15 UTC60.860.80° 0 kt999.7
13:35 UTC62.660.80° 0 kt999.7
13:55 UTC62.660.8190° 7 kt1000
14:15 UTC64.462.6200° 6 kt999.7

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

The radar

The Sterling radar (KLWX), 80 km away, was scanning. The volume nearest the touchdown began at 12:16 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
10:15 UTCFLOOD1 Sse McmullenGreene, VAOCTONIA ROAD CLOSED NEAR SOUTH RIVER ROAD. WATER OVER BRIDGE.
10:15 UTCFLOOD2 S LydiaGreene, VAMUTTON HOLLOW ROAD CLOSED NEAR DYKE ROAD DUE TO HIGH WATER.
10:15 UTCFLOOD2 Sse RuckersvilleGreene, VACARPENTERS MILL ROAD CLOSED NEAR MATTHEW MILL ROAD DUE TO FLOODING.
10:16 UTCTSTM WND DMG1 Ene CarrsbrookAlbemarle, VATREE DOWN IN THE 1700 BLOCK OF POLO GROUNDS ROAD.
11:17 UTCTORNADO3 Wsw Burr HillOrange, VAEF-1 TORNADO BEGAN IN THE 27000 BLOCK OF OLD MUSTERFIELD LANE... PROCEEDED NORTHEAST FOR 0.9 MILES... CROSSING COOKE LANE... AND ENDED NEAR MUSTERFIELD ROAD. DOZENS OF TREES UPROOTED AND SNAPPED... CINDER BLOCK GARAGE DE
11:18 UTCTSTM WND DMG2 Wsw Burr HillOrange, VACINDER BLOCK GARAGE DESTROYED...DEBRIS THROWN IN ALL DIRECTIONS.
11:18 UTCTSTM WND DMG3 Wsw Burr HillOrange, VANUMEROUS TREES DOWN ON OLD MUSTERFIELD LANE
11:40 UTCFLOOD1 Se WashingtonRappahannock, VATIGER VALLEY ROAD CLOSED DUE TO FLOODING.
11:51 UTCFLOOD1 Nw WashingtonRappahannock, VASIX TO TWELVE INCHES OF WATER FLOWING OVER HARRIS HOLLOW ROAD IN SEVERAL PLACES.
12:10 UTCTSTM WND DMGMontclairPrince William, VATREE DOWN ON MARLINGTON DRIVE BETWEEN BRAWNER DRIVE AND BARGER PLACE.
14:45 UTCFLOOD2 Wnw RapidanCulpeper, VAROBINSON RIVER EXCEEDED ITS 11 FOOT FLOOD STAGE BETWEEN 1030 AND 1045 AM. AT 11 FEET... ROBINSON RIVER ROAD IS FLOODED IN MULTIPLE PLACES NEAR THE STREAM.
14:45 UTCFLOOD2 Wnw RapidanMadison, VAROBINSON RIVER EXCEEDED ITS 11 FOOT FLOOD STAGE BETWEEN 1030 AND 1045 AM. AT 11 FEET... ROBINSON RIVER ROAD IS FLOODED IN MULTIPLE PLACES NEAR THE STREAM.

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

The other tornadoes of May 5, 2017

12 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 53:12 AM EDTEF0Rockingham, NC3.3375$4.0 million
May 54:04 AM EDTEF0Bedford, VA0.3100$15,000
May 55:21 AM EDTEF1Granville, NC1.0250$100,000
May 55:40 AM EDTEF1Mecklenburg, VA14.875$200,000
May 56:13 AM EDTEF0Lunenburg, VA1.075$20,000
May 56:40 AM EDTEF0Powhatan, VA0.475$100,000
May 56:50 AM EDTEF1Dinwiddie, VA2.4300$450,000
May 57:09 AM EDTEF1Dinwiddie, VA2.3150$38,000
May 57:27 AM EDTEF0Chowan, NC11.7100$205,000
May 58:02 AM EDTEF0Camden, NC8.175$20,000
May 59:19 AM EDTEF1King George, VA1.210
May 57:55 PM EDTEF0Surry, VA4.975$6,000

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.