Tornadoes · United States · North Carolina · 2008
EF0 tornado, Onslow Beach, North Carolina, September 25, 2008
This EF0 tornado ran 0.3 miles across Onslow County on September 25, 2008, touching down at 4:15 PM EDT and reaching 10 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.
EF065 to 85 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
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
- EF0
- Date
- September 25, 2008
- Touchdown
- 4:15 PM EDT (20:15 UTC)
- Lifted
- 4:16 PM EDT (20:16 UTC)
- On the ground
- 1 minutes
- Path length
- 0.3 miles (0.5 km)
- Path width
- 10 yards (9 m)
- Deaths
- 0
- Injuries
- 0
- County
- Onslow County
- Touchdown point
- 34.552, -77.297
- Lift-off point
- 34.553, -77.302
- Record number
- 0809251415-01
What the Weather Service recorded
High pressure north of the area and strong low pressure to the south produced strong winds and coastal flooding over eastern North Carolina September 24th through the 25th. Isolated thunderstorms developed near the coast during the late afternoon of September 25th with a tornado reported in Onslow County.
Public reported brief tornado touch down near Onslow Beach. No damage was reported.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
10 minutes of warning. NWS MHX issued a tornado warning for this county at 20:05 UTC, 10 minutes before the tornado touched down, in force until 20:45 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 20:05 UTC | 20:45 UTC | Tornado Warning | MHX |
| 20:13 UTC | 20:45 UTC | Tornado Warning | MHX |
| 22:13 UTC | 00:00 UTC | Coastal Flood Statement | MHX |
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 19:45 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.
Newport, NC (KMHX), 12:00Z
8.3 hours before the tornado, 46 km from the path. September 25, 2008.
- Mixed-layer CAPE
- 166 J/kg
- Mixed-layer CIN
- -181 J/kg
- Surface CAPE
- 140 J/kg
- Mixed-layer LCL
- 500 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 417 m²/s²
- 0-3 km storm-relative helicity
- 585 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 8.4
- 0-3 km lapse rate
- 4.6 K/km
Newport, NC (KMHX), 00:00Z
3.7 hours after it, 46 km from the path. September 26, 2008.
- Mixed-layer CAPE
- 1383 J/kg
- Mixed-layer CIN
- -11 J/kg
- Surface CAPE
- 693 J/kg
- Mixed-layer LCL
- 617 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 11.8
- 0-3 km lapse rate
- 5.3 K/km
The radar
The Morehead City radar (KMHX), 46 km away, was scanning. The volume nearest the touchdown began at 20:17 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 2008 tornado in North CarolinaEvery tornado in North Carolina since 1950Warnings in force in North Carolina nowThe forecast where you are
The other tornadoes of September 25, 2008
1 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| September 25 | 1:00 AM EDT | EF0 | Pitt, NC | 0.5 | 20 | $2,000 |
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.