Alert archive / New York / Tornado Watches in 2024

Tornado Watch 448

June 23, 20244 states

The Storm Prediction Center issued this tornado watch at Jun 23, 2024, 12:59 PM EDT for 4 states. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Jun 23, 2024, 12:59 PM EDT (16:59 UTC)
Expired: Jun 23, 2024, 9:48 PM EDT
In force: 9 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 43 counties

Androscoggin County, ME, Cumberland County, ME, Franklin County, ME, Oxford County, ME, York County, ME, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Coos County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH, Albany County, NY, Clinton County, NY, Essex County, NY, Franklin County, NY, Fulton County, NY, Hamilton County, NY, Herkimer County, NY, Montgomery County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, St. Lawrence County, NY, Warren County, NY, Washington County, NY, Addison County, VT, Bennington County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT

The radar

The Burlington radar (KCXX), 53 km from the middle of the area, began a volume at 17:01 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 60%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 60%
One or more gusts of 65 knots or more: 20%
Ten or more severe hail reports: 40%
One or more hailstones of 2 inches or more: 20%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

30 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 23, 1:05 PM EDT	Severe Thunderstorm Warning	BTV	Essex, Franklin	40 min
Jun 23, 1:41 PM EDT	Severe Thunderstorm Warning	BTV	Essex	49 min
Jun 23, 1:52 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, St. Lawrence	38 min
Jun 23, 2:07 PM EDT	Tornado Warning	BTV	Addison, Chittenden, Washington	23 min
Jun 23, 2:26 PM EDT	Severe Thunderstorm Warning	BTV	Clinton	49 min
Jun 23, 2:26 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex, Franklin	49 min
Jun 23, 2:28 PM EDT	Tornado Warning	BTV	Addison, Chittenden, Lamoille, Washington	32 min
Jun 23, 2:29 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Caledonia, Chittenden, Lamoille, Orange, Orleans and 1 more	61 min
Jun 23, 3:00 PM EDT	Severe Thunderstorm Warning	BTV	Rutland, Windsor	60 min
Jun 23, 3:21 PM EDT	Severe Thunderstorm Warning	BTV	Caledonia, Essex, Washington	39 min
Jun 23, 3:45 PM EDT	Severe Thunderstorm Warning	GYX	Sullivan	60 min
Jun 23, 3:47 PM EDT	Severe Thunderstorm Warning	ALY	Bennington, Windham	28 min
Jun 23, 4:07 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Chittenden, Lamoille, Washington	38 min
Jun 23, 4:12 PM EDT	Severe Thunderstorm Warning	BTV	Chittenden, Lamoille, Orleans, Washington	48 min
Jun 23, 4:22 PM EDT	Severe Thunderstorm Warning	GYX	Cheshire	53 min
Jun 23, 4:43 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Caledonia, Chittenden, Lamoille, Orleans, Washington	47 min
Jun 23, 4:44 PM EDT	Flash Flood Warning	BTV	Caledonia, Chittenden, Lamoille, Washington	3 hr
Jun 23, 4:50 PM EDT	Tornado Warning	GYX	Cheshire	25 min
Jun 23, 4:51 PM EDT	Tornado Warning	BTV	Chittenden, Lamoille, Washington	24 min
Jun 23, 4:57 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Merrimack	41 min
Jun 23, 5:07 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Montgomery, Saratoga, Schenectady	38 min
Jun 23, 5:11 PM EDT	Severe Thunderstorm Warning	GYX	Hillsborough	49 min
Jun 23, 5:23 PM EDT	Tornado Warning	ALY	Montgomery	12 min
Jun 23, 5:26 PM EDT	Tornado Warning	GYX	Hillsborough	34 min
Jun 23, 5:48 PM EDT	Tornado Warning	GYX	Hillsborough, Merrimack, Rockingham	27 min
Jun 23, 6:02 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Oxford	43 min
Jun 23, 6:13 PM EDT	Severe Thunderstorm Warning	GYX	York	62 min
Jun 23, 6:29 PM EDT	Severe Thunderstorm Warning	GYX	Coos	46 min
Jun 23, 6:31 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Oxford	44 min
Jun 23, 8:33 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Knox, Lincoln, Sagadahoc	42 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 5.0 hours before the alert went out and 170 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: 358 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 557 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 282 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 12:01 PM EDT	Mesoscale Discussion	SPC	Cumberland, Oxford, York	89 min
Jun 23, 2:37 PM EDT	Mesoscale Discussion	SPC	Cheshire, Grafton, Sullivan	83 min
Jun 23, 4:32 PM EDT	Mesoscale Discussion	SPC	Belknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more	88 min
Jun 23, 6:28 PM EDT	Mesoscale Discussion	SPC	Rockingham	62 min
Jun 23, 1:42 PM EDT	Mesoscale Discussion	SPC	Allegany, Chemung, Schuyler, Steuben, Tioga, Tompkins	2 hr
Jun 23, 3:23 PM EDT	Mesoscale Discussion	SPC	Broome, Chenango, Columbia, Delaware, Dutchess, Greene and 8 more	2 hr
Jun 23, 4:33 PM EDT	Severe Thunderstorm Watch	SPC	Broome, Chemung, Chenango, Columbia, Delaware, Dutchess and 8 more	5 hr

Nearby

Tornado Watches in New York, 2024 Tornado Watches in Vermont, 2024 Tornado Watches in New Hampshire, 2024 Every tornado watch in 2024

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.