Tornadoes · United States · Virginia · 2017
EF1 tornado, Blanks to Dunns Corner, Virginia, May 5, 2017
From Blanks to Dunns Corner, this EF1 tornado ran 14.8 miles across Mecklenburg County on May 5, 2017, touching down at 5:40 AM EDT and reaching 75 yards wide. It killed nobody, and did $200,000 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.
EF065 to 85 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mphthis tornado
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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
- 5:40 AM EDT (09:40 UTC)
- Lifted
- 5:50 AM EDT (09:50 UTC)
- On the ground
- 10 minutes
- Path length
- 14.8 miles (23.8 km)
- Path width
- 75 yards (69 m)
- Deaths
- 0
- Injuries
- 0
- Property damage
- $200,000
- County
- Mecklenburg County
- Touchdown point
- 36.577, -78.441
- Lift-off point
- 36.742, -78.270
- Record number
- 1705050340-01
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 EF0. The highest wind the damage implies is 80 mph.
- Note that the camper was not moved or damaged.
- Heavily wooded area. Other isolated damage noted.
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
Scattered severe thunderstorms in advance of low pressure and its associated cold front produced damaging winds and six tornadoes across portions of central and eastern Virginia.
Tornado briefly touched down along and just south of the John Kerr Reservoir in southern Mecklenburg county. The tornado caused minor tree damage along Phyllis Road south of Boydton, uprooting a few trees and snapping off several others. The tornado lifted and continued north northeast crossing Route 58, before touching |down again in Baskerville along Baskerville Road, and uprooting and breaking numerous trees. A barn on Baskerville Road was destroyed with at least two walls failing. Some additional minor structural damage to flashing was noted to another outbuilding just north of VA-47.
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) | Expired | Product | Office |
|---|---|---|---|
| 09:22 UTC | 10:00 UTC | Severe Thunderstorm Warning | AKQ |
| 09:27 UTC | 10:15 UTC | Severe Thunderstorm Warning | AKQ |
| 10:15 UTC | 10:45 UTC | Severe Thunderstorm Warning | AKQ |
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.
Roanoke, VA (KRNK), 00:00Z
9.7 hours before the tornado, 118 km from the path. May 5, 2017.
- Mixed-layer CAPE
- 5 J/kg
- Mixed-layer CIN
- -31 J/kg
- Surface CAPE
- 48 J/kg
- Mixed-layer LCL
- 706 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 347 m²/s²
- 0-3 km storm-relative helicity
- 487 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 5.1 K/km
Roanoke, VA (KRNK), 12:00Z
2.3 hours after it, 118 km from the path. May 5, 2017.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- -81045 J/kg
- Surface CAPE
- 1 J/kg
- Mixed-layer LCL
- 847 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
- 0-3 km lapse rate
- 3.6 K/km
The radar
The Raleigh/Durham radar (KRAX), 111 km away, was scanning. The volume nearest the touchdown began at 09:37 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) | Report | Where | County | Remark |
|---|---|---|---|---|
| 08:26 UTC | TSTM WND DMG | 4 Wsw Turbeville | Halifax, VA | A TREE WAS BLOWN DOWN ALONG HIGHWAY 58 NEAR HUDSON DRIVE. |
| 08:53 UTC | TSTM WND DMG | 3 Nne Halifax | Halifax, VA | A TREE WAS BLOWN DOWN ALONG HOWARD P ANDERSON ROAD NEAR WINNS CREEK ROAD. |
| 08:55 UTC | TSTM WND DMG | 4 Sse Halifax | Halifax, VA | TREE DOWN ON TANGLEWYLDE DR. TIME RADAR ESTIMATED. 11 TREES DOWN THROUGHOUT COUNTY. |
| 09:05 UTC | TSTM WND DMG | 4 W Clover | Halifax, VA | TREE DOWN ON REVERND COLEMAN RD. TIME RADAR ESTIMATED. 11 TREES DOWN THROUGHOUT THE COUNTY. |
| 09:22 UTC | TSTM WND DMG | 5 Ne Phenix | Charlotte, VA | THUNDERSTORM WINDS BLEW ONE TREE DOWN ALONG THOMAS JEFFERSON HIGHWAY NEAR CULLEN. |
| 09:28 UTC | TSTM WND DMG | 3 N Keysville | Charlotte, VA | THUNDERSTORM WINDS BLEW ONE TREE DOWN ALONG COUNTRY CLUB ROAD NEAR KEYSVILLE. |
| 09:50 UTC | TSTM WND DMG | Baskerville | Mecklenburg, VA | REPORT OF NUMEROUS TREES DOWN AND A TRAMPOLINE WRAPPED AROUND A TREE. |
| 09:54 UTC | TSTM WND DMG | 3 Sw North View | Mecklenburg, VA | NUMEROUS TREE DAMAGE WHERE TREES ARE TWISTED AND SNAPPED (INCLUDING AN OAK TREE). TRAMPOLINE PICKED UP OVER HOUSE AND IN NEIGHBOR'S YARD. METAL SIGN (4 X 10 FEET) MOVED. NEIGHBOR'S BARN DESTROYED. MORE TREE DAMAGE POSSIB |
| 10:05 UTC | TSTM WND DMG | Crewe | Nottoway, VA | NUMEROUS REPORTS OF TREES DOWN. |
| 10:13 UTC | TORNADO | 2 Ese Gary | Lunenburg, VA | AN NWS STORM SURVEY CONFIRMED AN EF0 TORNADO NEAR THE INTERSECTION OF CRAIG MILL ROAD AND POWERS ROAD IN LUNENBURG COUNTY. MAXIMUM WINDS OF 75 MPH. NUMEROUS TREES WERE UPROOTED OR THE TOPS WERE SNAPPED. |
| 10:50 UTC | TSTM WND DMG | 3 W Mckenney | Dinwiddie, VA | POSSIBLE TORNADO NEAR BASKERVILLE MILL ROAD AND HWY 40. REPORTS OF TREES DOWN AND STRUCTURES DAMAGED. |
| 10:50 UTC | TSTM WND DMG | 3 Wnw Mckenney | Dinwiddie, VA | POSSIBLE TORNADO NEAR BASKERVILLE MILL ROAD AND HWY 40. REPORTS OF TREES DOWN AND STRUCTURES DAMAGED. |
| 10:51 UTC | TORNADO | 3 Wnw Mckenney | Dinwiddie, VA | NWS STORM SURVEY TEAM CONFIRMS DAMAGE CONSISTENT WITH AN EF1 TORNADO JUST WEST OF MCKENNEY IN DINWIDDIE COUNTY. STRAIGHTLINE WIND DAMAGE WAS ALSO OBSERVED. THE STORM SURVEY IS ONGOING AND ADDITIONAL INFORMATION WILL BE G |
| 10:51 UTC | TORNADO | 3 Wnw Mckenney | Dinwiddie, VA | NWS STORM SURVEY TEAM CONFIRMS DAMAGE CONSISTENT WITH AN EF1 TORNADO JUST WEST OF MCKENNEY IN DINWIDDIE COUNTY. WIND SPEEDS WERE ESTIMATED AT 85 TO 95 MPH. STRAIGHTLINE WIND DAMAGE WAS ALSO OBSERVED. |
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.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| May 5 | 3:12 AM EDT | EF0 | Rockingham, NC | 3.3 | 375 | $4.0 million | ||
| May 5 | 4:04 AM EDT | EF0 | Bedford, VA | 0.3 | 100 | $15,000 | ||
| May 5 | 5:21 AM EDT | EF1 | Granville, NC | 1.0 | 250 | $100,000 | ||
| May 5 | 6:13 AM EDT | EF0 | Lunenburg, VA | 1.0 | 75 | $20,000 | ||
| May 5 | 6:40 AM EDT | EF0 | Powhatan, VA | 0.4 | 75 | $100,000 | ||
| May 5 | 6:50 AM EDT | EF1 | Dinwiddie, VA | 2.4 | 300 | $450,000 | ||
| May 5 | 7:09 AM EDT | EF1 | Dinwiddie, VA | 2.3 | 150 | $38,000 | ||
| May 5 | 7:27 AM EDT | EF0 | Chowan, NC | 11.7 | 100 | $205,000 | ||
| May 5 | 8:02 AM EDT | EF0 | Camden, NC | 8.1 | 75 | $20,000 | ||
| May 5 | 8:17 AM EDT | EF1 | Orange, VA | 0.9 | 100 | |||
| May 5 | 9:19 AM EDT | EF1 | King George, VA | 1.2 | 10 | |||
| May 5 | 7:55 PM EDT | EF0 | Surry, VA | 4.9 | 75 | $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.