Connecticut, 1998

Tornadoes and Flash Flood in Connecticut, June 30, 1998

June 30, 1998 · NWS OKX · 17 events in 4 counties and zones

During the morning, thunderstorms produced frequent lightning and heavy rain. Lightning struck:o a house at 109 Celetano Drive in the Ridge Subdivision of Naugatuck.

Where it happened

Every event with a place to put it; 4 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

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
17

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 OKX wrote it up.

Two rounds of thunderstorms affected the area.During the morning, thunderstorms produced frequent lightning and heavy rain. Lightning struck:o a house at 109 Celetano Drive in the Ridge Subdivision of Naugatuck. Lightning struck the side of the house and damaged a bedroom wall.o a house on Saybrook Road in Middletown.Heavy rain caused the Quinnipiac River at Wallingford to rise above its' flood stage from June 30th at 2:20 pm EST until July 1st at 12:35 pm EST. The crest stage of 7.60 feet occurred at midnight and was 0.60 feet above flood stage. During the afternoon and evening, severe thunderstorms produced high winds including 3 weak tornadoes, large hail, and frequent lightning as they moved northeast across the area.In New Haven County, high winds downed many trees in New Haven, Guilford, and Branford. Some trees fell into a house in New Haven. Lightning struck and damaged the bell tower of the Mary Taylor United Methodist Church in Milford.In Middlesex County, two weak tornadoes were confirmed by NWS Staff. A funnel cloud was observed from North Branford to Montville. The funnel cloud touched down briefly in Chatfield Hollow State Park near Killingworth then lifted briefly before touching down again in Chester near the intersection of Spring and Prospect Streets. Damage consisted primarily of downed trees and power lines. High winds downed other trees across the county.In New London County, an F1 tornado was confirmed by the NWS at the intersection of Day Hill Road and Rte. 148 in Lyme. This touch down area is in line with the F1 tornado in Chatfield State Park in Killingworth and the F0 tornado in Chester of Middlesex County. Tree tops were twisted near Ferry Road in Hadlyme. Near the intersection of Day Hill Road and Rte. 148, the trees were twisted off a few feet from the ground. This damage pattern continued to the east-northeast through a field to just near Rte. 82. Damage consisted primarily of downed trees and power lines.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

8 thunderstorm wind, 3 lightning, 3 tornado, 2 hail, 1 flash flood. Local standard time, as filed.

Lightning, New Haven

When
June 30, 8:00 AM EST
Where
New Haven County, Naugatuck
Reported by
NEWSPAPER
Coordinates
41.362, -72.844 (the zone’s center; the record gives no point)

Lightning, Middlesex

When
June 30, 8:37 AM EST
Where
Middlesex County, Middletown
Reported by
NEWSPAPER
Coordinates
41.451, -72.508 (the zone’s center; the record gives no point)

Flash Flood, New Haven

When
June 30, 2:20 PM EST to 11:59 PM EST
Where
New Haven County, Wallingford
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
41.362, -72.844 (the zone’s center; the record gives no point)

Hail, New Haven

When
June 30, 6:30 PM EST
Where
New Haven County, Wolcott
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.600, -72.980

Thunderstorm Wind, New Haven

When
June 30, 6:47 PM EST to 7:00 PM EST
Where
New Haven County, Orange to New Haven
Measured
60 kt (69 mph)
Reported by
TRAINED SPOTTER
Coordinates
41.270, -73.030

Thunderstorm Wind, Middlesex

When
June 30, 6:48 PM EST
Where
Middlesex County, Killingworth
Measured
55 kt (63 mph)
Reported by
TRAINED SPOTTER
Coordinates
41.350, -72.570

Thunderstorm Wind, Fairfield

When
June 30, 7:00 PM EST
Where
Fairfield County, Sherman
Measured
50 kt (58 mph)
Reported by
TRAINED SPOTTER
Coordinates
41.570, -73.500

Thunderstorm Wind, New London

When
June 30, 7:18 PM EST
Where
New London County, Montville
Measured
50 kt (58 mph)
Reported by
TRAINED SPOTTER
Coordinates
41.450, -72.130

Thunderstorm Wind, Middlesex

When
June 30, 7:20 PM EST
Where
Middlesex County, Deep River
Measured
55 kt (63 mph)
Reported by
TRAINED SPOTTER
Coordinates
41.380, -72.430

Hail, New London

When
June 30, 7:29 PM EST
Where
New London County, Lyme
Measured
1.25 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.300, -72.320

Tornado, Middlesex

When
June 30, 7:30 PM EST
Where
Middlesex County, Killingworth
Measured
63
Rating
F1
Path length
0.1 mi
Path width
33 yd
Reported by
NWS STORM SURVEY
Coordinates
41.350, -72.570

Tornado, New London

When
June 30, 7:30 PM EST
Where
New London County, Lyme
Measured
66
Rating
F1
Path length
0.1 mi
Path width
17 yd
Reported by
NWS STORM SURVEY
Coordinates
41.300, -72.320

Thunderstorm Wind, New London

When
June 30, 7:31 PM EST
Where
New London County, Salem
Measured
52 kt (60 mph)
Reported by
TRAINED SPOTTER
Coordinates
41.480, -72.270

Tornado, Middlesex

When
June 30, 7:45 PM EST
Where
Middlesex County, Chester
Measured
55
Rating
F0
Path length
0.1 mi
Path width
33 yd
Reported by
NWS STORM SURVEY
Coordinates
41.400, -72.450

Lightning, New Haven

When
June 30, 7:45 PM EST
Where
New Haven County, Milford
Reported by
TRAINED SPOTTER
Coordinates
41.362, -72.844 (the zone’s center; the record gives no point)

Thunderstorm Wind, New Haven

When
June 30, 8:15 PM EST
Where
New Haven County, Branford to Guilford
Measured
50 kt (58 mph)
Reported by
TRAINED SPOTTER
Coordinates
41.270, -72.820

Thunderstorm Wind, New London

When
June 30, 8:15 PM EST
Where
New London County, North Stonington
Measured
50 kt (58 mph)
Reported by
TRAINED SPOTTER
Coordinates
41.430, -71.880

What these are

Lightning
A lightning strike that killed, injured or caused damage.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
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.
Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.

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

The same day elsewhere

More

Every storm in Connecticut in 1998Every state in 1998This day in weather historyThe tornado archive for Connecticut, 1998Warnings in Connecticut, June 1998

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: 5658862, 5658863, 5658864, 5658476, 5658477, 5658478, 5658854, 5658857, 5658479, 5658858, 5658480, 5658859, 5658860, 5658853, 5658856, 5658855, 5658861.