Tornadoes · United States · Pennsylvania · 1996

F1 tornado, Loyalsockville, Pennsylvania, July 8, 1996

This F1 tornado ran 1.0 miles across Lycoming County on July 8, 1996, touching down at 2:05 PM EDT and reaching 30 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.

  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
July 8, 1996
Touchdown
2:05 PM EDT (18:05 UTC)
Path length
1.0 miles (1.6 km)
Path width
30 yards (27 m)
Deaths
0
Injuries
0
County
Lycoming County
Touchdown point
41.320, -76.920
Lift-off point
41.320, -76.920
Record number
881

What the Weather Service recorded

A small tornado touched down just north of Loyalsockville and moved southeast causing damage along a 1 mile path. Trees were snapped and uprooted. Skirting was blown off trailers and some windows were blown in at the Tiadaghton View Trailer Court on Back Street. A parsonage on Kaiser Hollow Road was severely damaged when two huge oak trees fell on the structure.

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. One was issued for the county at another hour that day.

Issued (UTC)ExpiredProductOffice
17:37 UTC18:45 UTCSevere Thunderstorm WarningCTP
18:10 UTC19:00 UTCTornado WarningCTP

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 General Thunderstorms Risk. The outlook in force was issued at 05:58 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.

Phillips Aaf/Abe, MD (KAPG), 12:00Z

6.1 hours before the tornado, 217 km from the path. July 8, 1996.

Skew-T log-pSkew-T log-p diagram, Phillips Aaf/Abe, MD at 12:00Z on 1996-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 398 joules per kilogram, CIN -137, lifted condensation level 1479 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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, Phillips Aaf/Abe, MD at 12:00Z on 1996-07-08The 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 40 knots.193958Sfc1 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
398 J/kg
Mixed-layer CIN
-137 J/kg
Surface CAPE
1846 J/kg
Mixed-layer LCL
1479 m above ground
0-6 km bulk shear
40 kt
0-1 km bulk shear
13 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0
0-3 km lapse rate
5.7 K/km

Open this sounding in Storm Lab

The surface observations

Williamsport (IPT), 9 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
16:51 UTC83720° 0 kt1004.1HZ
17:51 UTC8271100° 5 kt1002.7HZ
18:34 UTC73.464.4170° 5 kt1003.7
18:42 UTC73.464.4130° 4 kt1003.4TS
18:51 UTC76650° 0 kt1003.4TS
19:13 UTC71.666.2320° 13 kt161005.1+TSRA SHRA
19:16 UTC69.866.2 5 kt161004.7+TSRA
19:21 UTC69.868 4 kt1004.1+TSRA
19:27 UTC69.86870° 3 kt1004.1+TSRA SHRA
19:31 UTC71.66890° 3 kt1004.1+TSRA SHRA
19:51 UTC696940° 8 kt1003.7+TSRA BR
20:00 UTC69.869.840° 8 kt1003.7FZFG +TSRA SHRA
20:02 UTC69.86860° 5 kt1003.4+TSRA SHRA

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

The radar

The State College radar (KCCX), 101 km away, was scanning. The volume nearest the touchdown began at 18:03 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 1996 tornado in PennsylvaniaEvery tornado in Pennsylvania since 1950Warnings in force in Pennsylvania nowThe forecast where you are

The other tornadoes of July 8, 1996

3 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
July 86:33 AM CDTF0Cedar, MO0.250$50,000
July 84:00 PM CDTF0, PR0.210$10,000
July 86:00 PM EDTF2Kennebec, ME1.5200$10,000

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.