Pennsylvania, 1997

Damaging Wind in Pennsylvania, July 18, 1997

July 18, 1997 · NWS PHI · 1 event in 1 county or zone

Severe thunderstorms knocked down trees throughout the southeast half of Lehigh County including the city of Allentown. S.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS PHI wrote it up.

Severe thunderstorms knocked down trees throughout the southeast half of Lehigh County including the city of Allentown. Within Allentown streets were blocked and power lines torn down north to U.S. Route 22. About 10,000 Metropolitan Edison customers lost power in Lehigh, Monroe and Northampton Counties, although most of the outages did occur in the latter two counties.

The radar

The Philadelphia radar (KDIX), 116 km away, was scanning. The volume nearest the first event began at 22:45 UTC.

Open the radar archive at this moment

Event by event

1 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Lehigh

When
July 18, 5:45 PM EST
Where
Lehigh County, Macungie to Bethlehem
Measured
50 kt (58 mph)
Coordinates
40.520, -75.550

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Pennsylvania in 1997Every state in 1997This day in weather historyWarnings in Pennsylvania, July 1997

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5614506.