Connecticut, 1999

Flash Flood and Hail in Connecticut, July 29, 1999

July 29, 1999 · NWS ALY · 3 events in 1 county or zone

A strong warm front and favourable wind shear aloft allowed for some thunderstorms to become strong to locally severe across northwestern Connecticut on the evening of July 29. Thunderstorms deposited dime size hail at Cornwall and Litchfield in Litchfield County.

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
$500
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 ALY wrote it up.

A strong warm front and favourable wind shear aloft allowed for some thunderstorms to become strong to locally severe across northwestern Connecticut on the evening of July 29. Thunderstorms deposited dime size hail at Cornwall and Litchfield in Litchfield County. In addition the storms produced torrential rainfall which resulted in six to eight inches of water that rapidly covered roadways in the town of Litchfield.

The radar

The Albany radar (KENX), 104 km away, was scanning. The volume nearest the first event began at 00:26 UTC.

Open the radar archive at this moment

Event by event

2 hail, 1 flash flood. Local standard time, as filed.

Hail, Litchfield

When
July 29, 7:25 PM EST
Where
Litchfield County, Cornwall
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.830, -73.330

Flash Flood, Litchfield

When
July 29, 8:35 PM EST
Where
Litchfield County, Litchfield
Property damage
$500
Reported by
LAW ENFORCEMENT
Coordinates
41.847, -73.221 (the zone’s center; the record gives no point)

Hail, Litchfield

When
July 29, 8:35 PM EST
Where
Litchfield County, Litchfield
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
41.750, -73.180

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
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.

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

The same day elsewhere

More

Every storm in Connecticut in 1999Every state in 1999This day in weather historyWarnings in Connecticut, July 1999

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: 5707248, 5707249, 5707250.