Connecticut, 2025

Heat and Damaging Winds in Connecticut, July 29 to 30, 2025

July 29 to 30, 2025 · NWS ALY · 5 events in 3 counties and zones

High pressure over the region brought a period of hot and humid conditions to portions of northwestern Connecticut on July 29-30, 2025. Maximum heat index values (feels like temperatures) between 95 and 104 degrees were observed in some areas during the afternoon hours on one or multiple days.

Where it happened

Every event with a place to put it; 3 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
5

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.

High pressure over the region brought a period of hot and humid conditions to portions of northwestern Connecticut on July 29-30, 2025. Maximum heat index values (feels like temperatures) between 95 and 104 degrees were observed in some areas during the afternoon hours on one or multiple days. On July 30, 2025, a couple of thunderstorms developed ahead of an approaching cold front during the afternoon hours. One of the storms became severe resulting in downed trees and wires.

The radar

The Albany radar (KENX), 108 km away, was scanning. The volume nearest the first event began at 20:42 UTC.

Open the radar archive at this moment

Event by event

3 heat, 2 thunderstorm wind. Local standard time, as filed.

Heat, Northern Litchfield

When
July 29, 11:00 AM EST to 7:00 PM EST
Where
Northern Litchfield forecast zone
Reported by
Mesonet
Coordinates
41.847, -73.221 (the zone’s center; the record gives no point)

Heat, Southern Litchfield

When
July 29, 11:00 AM EST to 7:00 PM EST
Where
Southern Litchfield forecast zone
Reported by
Mesonet
Coordinates
41.847, -73.221 (the zone’s center; the record gives no point)

Heat, Southern Litchfield

When
July 30, 11:00 AM EST to 7:00 PM EST
Where
Southern Litchfield forecast zone
Reported by
Mesonet
Coordinates
41.847, -73.221 (the zone’s center; the record gives no point)

Thunderstorm Wind, Litchfield

When
July 30, 3:45 PM EST
Where
Litchfield County, 0.86 mi SE of Park Lane
Measured
50 kt (58 mph) estimated gust
Reported by
911 Call Center
Coordinates
41.590, -73.410

Numerous downed trees and wires were reported across New Milford including along U.S. Route 202.

Thunderstorm Wind, Litchfield

When
July 30, 4:02 PM EST
Where
Litchfield County, 0.86 mi NE of Roxbury
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
41.560, -73.310

A large tree was reported down in the Town of Roxbury.

What these are

Heat
Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.
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 Connecticut in 2025Every state in 2025This day in weather historyWarnings in Connecticut, July 2025

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 2026-09-30. Each event’s entry at NCEI: 1287548, 1287549, 1287550, 1287558, 1287559.