Alert archive / Connecticut / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 37, NWS New York, NY

July 30, 2025Naugatuck Valley Planning Region, Connecticut

NWS New York, NY issued this severe thunderstorm warning at Jul 30, 2025, 5:23 PM EDT for Naugatuck Valley Planning Region, Connecticut. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 30, 2025, 5:23 PM EDT (21:23 UTC)
Expired: Jul 30, 2025, 6:02 PM EDT
In force: 39 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Naugatuck Valley Planning Region, CT

The radar

The Brookhaven radar (KOKX), 75 km from the middle of the area, began a volume at 21:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.4 hours before the alert went out and 75 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 238 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 1637 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New York, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 30, 4:23 PM EDT, 1 hour earlier.

Area forecast discussion, Jul 30, 4:23 PM EDT, 1 hour before

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Hazardous weather outlook, Jul 30, 2:44 PM EDT, 2 hours 39 minutes before

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In the hours before

Special weather statement, Jul 30, 3:55 PM EDT, 1 hour 28 minutes before

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Special weather statement, Jul 30, 4:17 PM EDT, 1 hour 6 minutes before

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Special weather statement, Jul 30, 4:31 PM EDT, 52 minutes before

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Special weather statement, Jul 30, 5:09 PM EDT, 14 minutes before

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The office that day

Everything else NWS New York, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 30, 2:40 PM EDT	Flood Watch	OKX	Bronx, Kings, Nassau, New York, Orange, Putnam and 5 more	30 hr
Jul 30, 3:55 PM EDT	Special Weather Statement	OKX	Orange	50 min
Jul 30, 4:09 PM EDT	Areal Flood Advisory	OKX	Orange	66 min
Jul 30, 4:31 PM EDT	Special Weather Statement	OKX	Putnam	44 min
Jul 30, 5:59 PM EDT	Special Weather Statement	OKX	Bronx	46 min
Jul 30, 6:08 PM EDT	Special Marine Warning	OKX		67 min
Jul 30, 6:28 PM EDT	Areal Flood Advisory	OKX	Bronx, Westchester	62 min
Jul 30, 6:50 PM EDT	Special Weather Statement	OKX	Kings, New York, Queens	40 min
Jul 30, 7:19 PM EDT	Areal Flood Advisory	OKX	Nassau, Queens	86 min
Jul 30, 4:17 PM EDT	Special Weather Statement	OKX		43 min
Jul 30, 5:09 PM EDT	Special Weather Statement	OKX		36 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 2025 Every severe thunderstorm warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.