Alert archive / New York / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 39, NWS Burlington, VT

July 15, 2026Franklin County, St. Lawrence County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Jul 15, 2026, 1:02 AM EDT for Franklin County, St. Lawrence County, New York. It was in force for 28 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 15, 2026, 1:02 AM EDT (05:02 UTC)
Expired: Jul 15, 2026, 1:30 AM EDT
In force: 28 min
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Damage threat: Considerable
Hail: 2.0 in
Wind: 70.0 mph

Counties Franklin County, NY, St. Lawrence County, NY

The radar

The Ft Drum radar (KTYX), 117 km from the middle of the area, began a volume at 05:03 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 14, 8:24 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 5.0 hours before the alert went out and 218 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: 957 J/kg
Mixed-layer CIN: -316 J/kg
Mixed-layer LCL: 2034 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 260 m²/s²
0-3 km storm-relative helicity: 316 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 Burlington, VT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 14, 9:18 PM EDT, 3 hours 44 minutes earlier.

Area forecast discussion, Jul 14, 9:18 PM EDT, 3 hours 44 minutes before

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In the hours before

Local storm report, Jul 15, 12:41 AM EDT, 21 minutes before

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Local storm report, Jul 15, 12:43 AM EDT, 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 8:05 PM EDT	Severe Thunderstorm Warning	BTV	Caledonia, Essex, Lamoille, Orange, Orleans, Washington	40 min
Jul 15, 2:01 AM EDT	Severe Thunderstorm Warning	BTV	Addison, Rutland, Windsor	59 min
Jul 15, 2:51 AM EDT	Severe Thunderstorm Warning Considerable damage threat	BTV	Addison, Rutland, Windsor	39 min
Jul 15, 3:34 AM EDT	Special Weather Statement	BTV	Rutland, Windsor	56 min
Jul 15, 3:57 AM EDT	Severe Thunderstorm Warning	BTV	Rutland, Windsor	48 min
Jul 15, 4:21 AM EDT	Severe Thunderstorm Warning	BTV	Rutland, Windsor	39 min
Jul 14, 11:41 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BTV	St. Lawrence	49 min
Jul 15, 12:28 AM EDT	Severe Thunderstorm Warning Destructive damage threat	BTV	Franklin, St. Lawrence	47 min
Jul 15, 12:42 AM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex, Franklin, St. Lawrence	63 min
Jul 15, 1:08 AM EDT	Severe Thunderstorm Warning	BTV	Essex, Franklin, St. Lawrence	55 min
Jul 15, 1:45 AM EDT	Severe Thunderstorm Warning Considerable damage threat	BTV	Franklin, St. Lawrence	17 min
Jul 15, 2:00 AM EDT	Severe Thunderstorm Warning	BTV	Essex, Franklin, St. Lawrence	14 min
Jul 15, 2:00 AM EDT	Severe Thunderstorm Warning Considerable damage threat	BTV	Franklin, St. Lawrence	3 min
Jul 15, 2:20 AM EDT	Severe Thunderstorm Warning	BTV	Essex	25 min

Nearby

Severe Thunderstorm Warnings in New York, 2026 Every severe thunderstorm warning in 2026

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.