Alert archive / New York / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 73, NWS Burlington, VT

August 10, 2023St. Lawrence County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Aug 10, 2023, 4:46 PM EDT for St. Lawrence County, New York. It was in force for 37 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: Aug 10, 2023, 4:46 PM EDT (20:46 UTC)
Expired: Aug 10, 2023, 5:23 PM EDT
In force: 37 min
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 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 20:48 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.8 hours before the alert went out and 337 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: 25 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 45 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
Aug 10, 2:34 PM EDT	Special Weather Statement	BTV	Addison	41 min
Aug 10, 3:13 PM EDT	Special Weather Statement	BTV	Grand Isle	47 min
Aug 10, 3:58 PM EDT	Special Weather Statement	BTV	Franklin	47 min
Aug 10, 5:22 PM EDT	Special Weather Statement	BTV	Essex	23 min
Aug 10, 5:45 PM EDT	Special Weather Statement	BTV	Chittenden	45 min
Aug 10, 7:51 PM EDT	Special Weather Statement	BTV	Rutland	39 min
Aug 10, 2:08 PM EDT	Special Weather Statement	BTV	Franklin	52 min
Aug 10, 4:19 PM EDT	Special Weather Statement	BTV	St. Lawrence	41 min

Nearby

Severe Thunderstorm Warnings in New York, 2023 Every severe thunderstorm warning in 2023

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.