Tornadoes · United States · North Carolina · 1998

F1 tornado, Pine Hall, North Carolina, March 20, 1998

This F1 tornado ran 1.5 miles across Stokes County on March 20, 1998, touching down at 3:14 PM EST and reaching 30 yards wide. It killed nobody and injured 3, and did $100,000 of property damage.

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 mph

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

  2. F173 to 112 mphthis tornado

    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
F1
Date
March 20, 1998
Touchdown
3:14 PM EST (20:14 UTC)
Path length
1.5 miles (2.4 km)
Path width
30 yards (27 m)
Deaths
0
Injuries
3
Property damage
$100,000
County
Stokes County
Touchdown point
36.320, -80.070
Lift-off point
36.330, -80.050
Record number
770

What the Weather Service recorded

Severe thunderstorms during the afternoon hours on the 20th produced two tornadoes, damaging winds and hail to golf ball size.A supercell thunderstorm produced two tornadoes in North Carolina and a third one just over the Virginia border. The first tornado developed near Pine Hall in Stokes County around 314 PM EST and traveled northeast about 1.5 miles before dissipating around 317 PM EST. This small F1 tornado broke out windows, lifted a car off the ground, tore the roof off a house, damaged several mobile homes and toppled trees. The second tornado developed one mile southwest of Mayodan around 325 PM EST and traveled to the northeast about 12 miles before dissipating about three miles northwest of Eden around 349 PM EST. This rather large F3 tornado damaged or destroyed 500 to 600 residences and damaged or destroyed nearly all businesses in Stoneville and some businesses in Mayodan. This tornado tossed a truck 60 feet, carried a cinder block and an empty boat trailer about a quarter mile and pushed a 25,000 pound fire truck about 60 feet. The tornado knocked out a 300 foot section of a wall and severely damaged the roof from a large building in Mayodan. Damage to this building was estimated at 25 million dollars. The tornado was generally 100 to 400 yards wide, but in one place was around 800 yards wide. Two people lost their lives and officially 27 were injured. The fatalities included an 80 year old man who was pulled from his house southwest of Stoneville and tossed 500 feet in the air and a 24 year old woman who was in her car in Stoneville when the tornado hit. The tornado tossed her car into a building and then the wall of the building collapsed on the car. There were likely another 10 to 20 injuries that were unreported as people drove themselves to the hospital or were driven by friends. Cancelled checks and papers from Stoneville were found 53 miles north-northeast in Huddleston, Virginia. In addition, material from Mayodan and Stoneville were found at several locations around Martinsville, Virginia.After the tornado lifted three miles northwest of Eden, non-tornadic wind damage continued to the Virginia State line. Thunderstorm winds knocked down trees, damaged outbuildings and barns and tore shingles from some roofs. Hail up to half dollar size broke out car windows in Leasburg.

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
19:44 UTC20:50 UTCSevere Thunderstorm WarningRNK
19:45 UTC20:30 UTCSevere Thunderstorm WarningRNK

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. The outlook in force was issued at 11:01 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.

Greensboro/Hi Pt, NC (KGSO), 00:00Z

3.8 hours after it, 31 km from the path. March 21, 1998.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 1998-03-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 486 joules per kilogram, CIN -41, lifted condensation level 840 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, Greensboro/Hi Pt, NC at 00:00Z on 1998-03-21The 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 82 square meters per square second, 0 to 6 km bulk shear 64 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
486 J/kg
Mixed-layer CIN
-41 J/kg
Surface CAPE
249 J/kg
Mixed-layer LCL
840 m above ground
0-6 km bulk shear
64 kt
0-1 km bulk shear
25 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.2
0-3 km lapse rate
5.5 K/km

Open this sounding in Storm Lab

The surface observations

Winston-Salem/Smith_(Asos) (INT), 26 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
18:50 UTC64.4180° 13 kt999.7
19:55 UTC66.2200° 13 kt998.6
20:20 UTC57.2220° 13 kt999.3
20:30 UTC57.2250° 9 kt999
20:55 UTC59250° 5 kt998.6-RA
21:45 UTC 6 kt997.6

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

The radar

The Roanoke radar (KFCX), 80 km away, was scanning. The volume nearest the touchdown began at 20:12 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 1998 tornado in North CarolinaEvery tornado in North Carolina since 1950Warnings in force in North Carolina nowThe forecast where you are

The other tornadoes of March 20, 1998

11 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
March 206:25 AM ESTF3Hall, GA4.010012171$20 million
March 202:42 PM ESTF0Mecklenburg, NC0.130
March 203:25 PM ESTF3Rockingham, NC12.0300227$34 million
March 203:56 PM ESTF1Henry, VA13.0150$1.0 million
March 206:15 PM ESTF0Wake, NC0.130
March 206:30 PM ESTF2Durham, NC2.51001$600,000
March 206:40 PM ESTF2Wake, NC1.51002$650,000
March 206:45 PM ESTF0Wake, NC0.230$10,000
March 206:55 PM ESTF2Granville, NC1.5100$100,000
March 207:35 PM ESTF1Franklin, NC0.150$50,000
March 208:45 PM ESTF1Robeson, NC0.5301$20,000

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.