Alert archive / New York / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 52, NWS Burlington, VT

July 13, 2025St. Lawrence County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Jul 13, 2025, 4:23 PM EDT for St. Lawrence County, New York. It was in force for 52 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 13, 2025, 4:23 PM EDT (20:23 UTC)
Expired: Jul 13, 2025, 5:15 PM EDT
In force: 52 min
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County St. Lawrence County, NY

The radar

The Ft Drum radar (KTYX), 94 km from the middle of the area, began a volume at 20:26 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

Albany, NY (KALY), launched 12:00Z, 8.4 hours before the alert went out and 226 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: 16 J/kg
Mixed-layer CIN: -137 J/kg
Mixed-layer LCL: 715 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Burlington, VT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 13, 5:57 PM EDT	Special Weather Statement	BTV	Grand Isle	48 min
Jul 13, 6:20 PM EDT	Special Weather Statement	BTV	Chittenden	55 min
Jul 13, 1:13 PM EDT	Special Weather Statement	BTV	St. Lawrence	47 min
Jul 13, 1:58 PM EDT	Severe Thunderstorm Warning	BTV	St. Lawrence	47 min
Jul 13, 2:43 PM EDT	Special Weather Statement	BTV	St. Lawrence	47 min
Jul 13, 5:08 PM EDT	Special Weather Statement	BTV	Essex	52 min
Jul 13, 5:19 PM EDT	Severe Thunderstorm Warning	BTV	Clinton	41 min
Jul 13, 5:30 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex, Franklin	33 min
Jul 13, 7:50 PM EDT	Flash Flood Warning	BTV	Essex	3 hr

Nearby

Severe Thunderstorm Warnings in New York, 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.