Tornadoes · United States · Pennsylvania · 1998
F2 tornado, Markleton to Boynton, Pennsylvania, June 2, 1998
From Markleton to Boynton, this F2 tornado ran 15.0 miles across Somerset County on June 2, 1998, touching down at 7:00 PM EDT and reaching 880 yards wide. It killed nobody.
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.
F040 to 72 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
F173 to 112 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
F2113 to 157 mphthis tornado
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.
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.
F4207 to 260 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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
- F2
- Date
- June 2, 1998
- Touchdown
- 7:00 PM EDT (23:00 UTC)
- Path length
- 15.0 miles (24.1 km)
- Path width
- 880 yards (805 m)
- Deaths
- 0
- Injuries
- 0
- County
- Somerset County
- Touchdown point
- 39.850, -79.230
- Lift-off point
- 39.770, -79.070
- Record number
- 1327
What the Weather Service recorded
This F2 tornado was the first of two tornadoes to cross southern Somerset County on the evening of June 2. It would cross the path of the May 31st tornado that struck Salisbury. The tornado initially touched down about 4 miles southeast of Markleton, then tracked southeast for 12 miles across the Boynton area and ended in Pocahontas crossing the May 31st track about 6 miles east of Salisbury. The town of Boynton was hard hit, but most of the remaining damage in Pennsylvania was to trees. A carpentry shop near Pocahontas that had been destroyed by the May 31st tornado on Sunday was already being rebuilt by Amish farmers when the framing was blown over by this tornado. There were no deaths or injuries. See additional details in the Seven Springs to Frostburg tornado that paralleled the track of this storm just two hours later.
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
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.
Pittsburgh, PA (KPIT), 12:00Z
11.0 hours before the tornado, 105 km from the path. June 2, 1998.
- Mixed-layer CAPE
- 158 J/kg
- Mixed-layer CIN
- -77 J/kg
- Surface CAPE
- 0 J/kg
- Mixed-layer LCL
- 1288 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 224 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
- 0-3 km lapse rate
- 5.5 K/km
Pittsburgh, PA (KPIT), 00:00Z
1.0 hours after it, 105 km from the path. June 3, 1998.
- Mixed-layer CAPE
- 1770 J/kg
- Mixed-layer CIN
- -32 J/kg
- Surface CAPE
- 805 J/kg
- Mixed-layer LCL
- 1107 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 352 m²/s²
- 0-3 km storm-relative helicity
- 383 m²/s²
- Significant tornado parameter
- 4.1
- Supercell composite
- 19.4
- 0-3 km lapse rate
- 5.7 K/km
The surface observations
Latrobe/Westmorland (LBE), 56 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 00:00 UTC |
From the Iowa Environmental Mesonet's archive of airport observations.
The radar
The Pittsburgh radar (KPBZ), 121 km away, was scanning. The volume nearest the touchdown began at 23:02 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 PennsylvaniaEvery tornado in Pennsylvania since 1950Warnings in force in Pennsylvania nowThe forecast where you are
The other tornadoes of June 2, 1998
36 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| June 2 | 3:15 AM CDT | F1 | Rutherford, TN | 1.0 | 200 | $1.6 million | ||
| June 2 | 11:28 AM EDT | F0 | Saluda, SC | 0.3 | 40 | |||
| June 2 | 2:50 PM EDT | F0 | Gallia, OH | 0.3 | 40 | $50,000 | ||
| June 2 | 3:15 PM EDT | F1 | Mason, WV | 0.7 | 40 | 1 | $70,000 | |
| June 2 | 3:16 PM EDT | F1 | Putnam, WV | 0.3 | 40 | $20,000 | ||
| June 2 | 3:58 PM EDT | F1 | Kanawha, WV | 1.5 | 80 | $100,000 | ||
| June 2 | 4:19 PM EDT | F0 | Kanawha, WV | 0.5 | 60 | $10,000 | ||
| June 2 | 5:15 PM EDT | F0 | Carteret, NC | 17.0 | 50 | $1,000 | ||
| June 2 | 5:30 PM EDT | F1 | Beaver, PA | 7.0 | 300 | $400,000 | ||
| June 2 | 5:45 PM EDT | F1 | McKean, PA | 8.0 | 440 | |||
| June 2 | 5:55 PM EDT | F1 | Allegheny, PA | 32.0 | 700 | 50 | $13 million | |
| June 2 | 6:45 PM EDT | F2 | Wyoming, NY | 15.0 | 250 | $1.0 million | ||
| June 2 | 6:45 PM EDT | F1 | Jefferson, PA | 1.3 | 100 | $250,000 | ||
| June 2 | 6:50 PM EDT | F1 | Westmoreland, PA | 8.0 | 200 | 1 | $200,000 | |
| June 2 | 7:30 PM EDT | F0 | Beaver, PA | 0.2 | 30 | $10,000 | ||
| June 2 | 7:30 PM EDT | F0 | Clearfield, PA | 0.2 | 50 | |||
| June 2 | 7:40 PM EDT | F0 | York, PA | 4.0 | 30 | |||
| June 2 | 7:50 PM EDT | F1 | Cortland, NY | 0.1 | 60 | $150,000 | ||
| June 2 | 7:50 PM EDT | F1 | Blair, PA | 4.0 | 150 | |||
| June 2 | 7:53 PM EDT | F1 | Chenango, NY | 0.3 | 100 | $250,000 | ||
| June 2 | 7:56 PM EDT | F1 | Allegany, MD | 1.0 | 50 | |||
| June 2 | 8:20 PM EDT | F0 | Allegheny, PA | 1.0 | 50 | $20,000 | ||
| June 2 | 8:21 PM EDT | F0 | Allegany, MD | 0.5 | 50 | |||
| June 2 | 8:36 PM EDT | F1 | Hampshire, WV | 9.0 | 150 | $30,000 | ||
| June 2 | 9:00 PM EDT | F0 | Fayette, PA | 0.3 | 50 | $10,000 | ||
| June 2 | 8:02 PM CDT | F4 | Somerset, PA to MD | 36.5 | 1,200 | 5 | $5.5 million | |
| June 2 | 9:05 PM EDT | F1 | Susquehanna, PA | 12.0 | 100 | $300,000 | ||
| June 2 | 8:35 PM CDT | F2 | Fayette, PA to WV, MD | 12.0 | 300 | $9.0 million | ||
| June 2 | 9:35 PM EDT | F0 | Centre, PA | 0.5 | 70 | |||
| June 2 | 9:40 PM EDT | F1 | Northumberland, PA | 15.0 | 440 | |||
| June 2 | 9:45 PM EDT | F1 | Bradford, PA | 6.0 | 400 | $400,000 | ||
| June 2 | 9:50 PM EDT | F0 | Clarke, VA | 0.5 | 50 | $10,000 | ||
| June 2 | 10:00 PM EDT | F3 | Wyoming, PA | 26.0 | 500 | 2 | 15 | $2.2 million |
| June 2 | 10:10 PM EDT | F0 | Loudoun, VA | 1.0 | 50 | |||
| June 2 | 10:33 PM EDT | F2 | Mineral, WV | 15.0 | 150 | 5 | $250,000 | |
| June 2 | 10:40 PM EDT | F1 | Lackawanna, PA | 3.0 | 200 | $300,000 |
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.