EF0 tornado, Gale to Old Concord, Pennsylvania, May 16, 2025

1. EF065 to 85 mphthis tornado

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

2. EF186 to 110 mph

   Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

3. 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.

4. 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.

5. EF4166 to 200 mph

   Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

6. 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.

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.

Rating

EF0

Date

May 16, 2025

Touchdown

2:52 PM EDT (18:52 UTC)

Lifted

2:53 PM EDT (18:53 UTC)

On the ground

1 minutes

Path length

0.5 miles (0.8 km)

Path width

75 yards (69 m)

Deaths

0

Injuries

0

Property damage

$10,000

County

Washington County

Touchdown point

40.014, -80.359

Lift-off point

40.017, -80.350

Record number

2505161252-01

5 damage points were recorded along this path by NWS PBZ, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 65 mph.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

A couple bands of thunderstorms formed ahead of a warm front during the afternoon of May 16th, leading to a brief tornado in Washington County and a single wind report in Jefferson County. Later on, in the warm and humid airmass behind the front, a decaying mesoscale convective system crossed Ohio and into Pennsylvania just north of the Mason-Dixon Line. Several reports of downed trees were received from these storms just after midnight on the 17th.

The National Weather Service in Pittsburgh conducted a storm survey based on drone footage. The damage south of East Finley Washington County Pennsylvania, between Birch Road to Elwood Day Road, was determined to be caused by a weak EF0 tornado. The damage was to hardwood trees with large limbs just west of Birch Road and continued east. This was a heavily wooded area where vehicle access was limited. Drone pictures provided to the National Weather Service showed a convergence signature in open fields between the two roads in addition to around ten downed trees that were not visible by automobiles.

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

1 minute of warning. NWS PBZ issued a tornado warning for this county at 18:51 UTC, 1 minute before the tornado touched down, in force until 19:15 UTC.

The county was under a severe thunderstorm watch, issued at 18:33 UTC and running to 20:10 UTC.

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 Storm Prediction Center had this point in a Slight Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 16:28 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 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.

The Pittsburgh radar (KPBZ), 59 km away, was scanning. The volume nearest the touchdown began at 18:50 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.

Local storm reports within 60 km of the path, in the three hours either side.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

The live radar over the trackEvery 2025 tornado in PennsylvaniaEvery tornado in Pennsylvania since 1950Warnings in force in Pennsylvania nowThe forecast where you are

26 more were confirmed in the United States that day.

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.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.