EF1 tornado, Ackermanville to Bangor, Pennsylvania, May 6, 2025

1. EF065 to 85 mph

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

2. EF186 to 110 mphthis tornado

   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

EF1

Date

May 6, 2025

Touchdown

3:47 PM EDT (19:47 UTC)

Lifted

3:50 PM EDT (19:50 UTC)

On the ground

3 minutes

Path length

1.5 miles (2.4 km)

Path width

100 yards (91 m)

Deaths

0

Injuries

0

Property damage

$20,000

County

Northampton County

Touchdown point

40.840, -75.213

Lift-off point

40.860, -75.205

Record number

2505061347-01

4 damage points were recorded along this path by NWS PHI, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 90 mph.

• End point. Missing roof tiles of historic commercial building
• Roof damage at the public works garage. Roof tiles were found one quarter mile away near the school.
• Several trees uprooted. A few small trees snapped.
• Much of the damage already cleared

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

An occluding low pressure system was over the region resulting in scattered severe thunderstorms.

An NWS storm survey determined an EF1 tornado with estimated maximum wind speeds of 80 to 90 mph occurred near Bangor. The first damage was noted at a Public Works Barn. Damage in this area was consistent with maximum wind speeds of 70 to 80 mph. A small tree was felled and several tiles were blown off the roof. Of note, some of the tiles from the roof were found approximately one quarter mile away near a school. For the next approximate mile, discontinuous tree damage occurred in a wooded area. The highest degree of damage was noted behind a residence on |Washington Boulevard. At that location, several softwood trees were uprooted and a few were snapped. Maximum wind speed in this area were estimated to be 80 to 90 mph. This is also the location where the estimated maximum width was observed, approximately 100 yards. Further tree damage was noted where the tornado crossed the train tracks near the intersection of Mill Street and Murray Street. The final damage was noted with some tiles blown off a historic commercial building at the intersection of Murray Street and W Messinger Street.

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

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.

The county was under a severe thunderstorm watch, issued at 17:06 UTC and running to 23:23 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 16:30 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 Philadelphia radar (KDIX), 121 km away, was scanning. The volume nearest the touchdown began at 19:45 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

10 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.