Pennsylvania, 1997

Hail and Damaging Wind in Pennsylvania, July 18, 1997

July 18, 1997 · NWS PHI · 3 events in 1 county or zone

Severe thunderstorms caused considerable wind damage throughout the southeast half of Northampton County. Wind gusts during the strongest thunderstorms were estimated at around 60 mph.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
3

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 caused considerable wind damage throughout the southeast half of Northampton County. Wind gusts during the strongest thunderstorms were estimated at around 60 mph. About 10,000 homes and businesses in the county lost power. Power was not restored to everyone until the afternoon of the 20th. Hardest hit was Plainfield Township. At the Plainfield Farmers Fair, about a dozen and a half trees were uprooted, two roofs and two picnic tables were damaged and a tent was ripped. The roof of one township home was completely ripped off with its second floor contents strewn across the yard. A lean-to was blown over another home and landed in the front yard. Several other cars and roofs were crushed by fallen trees. Large hail also damaged corn fields.Other townships which reported trees on homes and/or crushed vehicles included Lower and Upper Mount Bethel Townships, Lower Saucon Township and Palmer Township. Within Bethlehem very large trees were uprooted and in Easton several trees were uprooted including a few on the College Hill Campus. Sections of Pennsylvania State Routes 191, 512, 611 and the Sullivan Trail were all closed because of downed trees. U.S. Route 22 was backed up for a mile because of downed trees in Lehigh County.

The radar

The Philadelphia radar (KDIX), 118 km away, was scanning. The volume nearest the first event began at 22:27 UTC.

Open the radar archive at this moment

Event by event

1 funnel cloud, 1 thunderstorm wind, 1 hail. Local standard time, as filed.

Funnel Cloud, Northampton

When
July 18, 5:26 PM EST
Where
Northampton County, Nazareth
Coordinates
40.754, -75.307 (the zone’s center; the record gives no point)

Thunderstorm Wind, Northampton

When
July 18, 5:26 PM EST to 5:31 PM EST
Where
Northampton County, Hellertown to Portland
Measured
52 kt (60 mph)
Coordinates
40.580, -75.330

Hail, Northampton

When
July 18, 5:26 PM EST
Where
Northampton County, 3 mi SE of Wind Gap
Measured
1 in hail
Coordinates
40.820, -75.270

What these are

Funnel Cloud
A rotating column of cloud extending from a thunderstorm that did not reach the ground.
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.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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: 5614502, 5614503, 5614504.