Tornadoes · United States · Pennsylvania · 1996

F1 tornado, Pottsville to Tamaqua, Pennsylvania, May 11, 1996

From Pottsville to Tamaqua, this F1 tornado ran 10.0 miles across Schuylkill County on May 11, 1996, touching down at 3:30 PM EDT and reaching 440 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
May 11, 1996
Touchdown
3:30 PM EDT (19:30 UTC)
Path length
10.0 miles (16.1 km)
Path width
440 yards (402 m)
Deaths
0
Injuries
0
County
Schuylkill County
Touchdown point
40.720, -76.120
Lift-off point
40.780, -75.950
Record number
879

What the Weather Service recorded

An F1 tornado (73-112 mph) moved northeast across small towns to the northeast of Pottsville causing damage along a 10 mile path from near New Philadelphia through Brockton and Mary-D before ending at Rabiit Run Reservoir just south of Tamaqua. Damage occurred along two separate 5 mile segments of the path, running parallel to route 209 from New Philadelphia to just south of Tuscarora on the north side of Sharp Mountain, and from south of Tuscarora to a mile south of Tamaqua on the south side of the mountain.Most of the damage was to trees. A roof was blown off a home, tiles were removed from a church roof and some siding was torn from a home in Brockton. A tree fell lengthwise completely demolishing one trailer, and another tree split a second mobile home in two in Mary-D. Heaviest damage was at Rabbit Run Reservoir where tree tops were torn off. Fishermen had their cars buried under the debris, but were unhurt.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

13 minutes of warning. NWS CTP issued a tornado warning for this county at 19:17 UTC, 13 minutes before the tornado touched down, in force until 20:00 UTC.

Issued (UTC)ExpiredProductOffice
18:44 UTC19:45 UTCSevere Thunderstorm WarningCTP
19:17 UTC20:00 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 05:50 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 radar

The Binghamton radar (KBGM), 161 km away, was scanning. The volume nearest the touchdown began at 19:27 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 May 11, 1996

2 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 112:55 PM EDTF1Dauphin, PA0.550
May 117:40 PM EDTF0Bladen, NC0.110

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.