Alert archive / Vermont / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 42, NWS Burlington, VT

July 21, 2022Caledonia County, Essex County, Orange County, Vermont

NWS Burlington, VT issued this severe thunderstorm warning at Jul 21, 2022, 1:47 PM EDT for Caledonia County, Essex County, Orange County, Vermont. It was in force for 43 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 21, 2022, 1:47 PM EDT (17:47 UTC)
Expired: Jul 21, 2022, 2:30 PM EDT
In force: 43 min
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Caledonia County, VT, Essex County, VT, Orange County, VT

The radar

The Burlington radar (KCXX), 88 km from the middle of the area, began a volume at 17:46 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 21, 11:37 AM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 5.8 hours before the alert went out and 155 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: 503 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 1489 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 21, 1:35 PM EDT, 12 minutes earlier.

Area forecast discussion, Jul 21, 1:35 PM EDT, 12 minutes before

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Hazardous weather outlook, Jul 21, 4:24 AM EDT, 9 hours 23 minutes before

Hazardous Weather Outlook
National Weather Service Burlington VT
424 AM EDT Thu Jul 21 2022

NYZ026>031-034-035-087-VTZ001>011-016>021-220830-
Northern St. Lawrence-Northern Franklin-Eastern Clinton-
Southeastern St. Lawrence-Southern Franklin-Western Clinton-
Western Essex-Eastern Essex-Southwestern St. Lawrence-Grand Isle-
Western Franklin-Orleans-Essex-Western Chittenden-Lamoille-Caledonia-
Washington-Western Addison-Orange-Western Rutland-Eastern Franklin-
Eastern Chittenden-Eastern Addison-Eastern Rutland-Western Windsor-
Eastern Windsor-
424 AM EDT Thu Jul 21 2022

This Hazardous Weather Outlook is for northern New York, central
Vermont, northeast Vermont, northwest Vermont and southern Vermont.

.DAY ONE...Tonight.

Continued heat concerns with heat index values 88-95 degrees, and
potential for strong, possibly severe, thunderstorms from late this
morning through the afternoon mainly in Vermont. Gusty winds and hail
will be main threats, but a rare tornado cannot be ruled out.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Warm temperatures continue through the weekend with another round of
thunderstorms possible on Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jul 21, 1:22 PM EDT, 25 minutes before

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Local storm report, Jul 21, 1:34 PM EDT, 13 minutes before

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Special weather statement, Jul 21, 1:40 PM EDT, 7 minutes before

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Local storm report, Jul 21, 1:41 PM EDT, 6 minutes before

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Special weather statement, Jul 21, 1:42 PM EDT, 5 minutes before

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Local storm report, Jul 21, 1:45 PM EDT, 2 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 21, 11:12 AM EDT	Severe Thunderstorm Warning	BTV	Chittenden, Franklin, Grand Isle	48 min
Jul 21, 11:47 AM EDT	Severe Thunderstorm Warning	BTV	Chittenden, Franklin, Grand Isle, Lamoille	43 min
Jul 21, 12:01 PM EDT	Special Weather Statement	BTV	Lamoille, Orleans	44 min
Jul 21, 12:09 PM EDT	Special Weather Statement	BTV	Windsor	51 min
Jul 21, 12:09 PM EDT	Severe Thunderstorm Warning	BTV	Caledonia, Lamoille, Orleans, Washington	51 min
Jul 21, 12:29 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, Lamoille, Orleans	36 min
Jul 21, 12:38 PM EDT	Special Weather Statement	BTV	Windsor	52 min
Jul 21, 12:51 PM EDT	Special Weather Statement	BTV	Chittenden, Lamoille	54 min
Jul 21, 12:55 PM EDT	Special Weather Statement	BTV	Rutland	50 min
Jul 21, 12:58 PM EDT	Tornado Warning	BTV	Caledonia, Essex, Orleans	32 min
Jul 21, 1:12 PM EDT	Special Weather Statement	BTV	Windsor	48 min
Jul 21, 1:14 PM EDT	Special Weather Statement	BTV	Orange	31 min
Jul 21, 1:20 PM EDT	Severe Thunderstorm Warning	BTV	Orange, Windsor	25 min
Jul 21, 1:27 PM EDT	Severe Thunderstorm Warning	BTV	Caledonia, Essex, Orleans	33 min
Jul 21, 1:40 PM EDT	Special Weather Statement	BTV	Orange	50 min
Jul 21, 1:42 PM EDT	Special Weather Statement	BTV	Windsor	48 min
Jul 21, 2:03 PM EDT	Special Weather Statement	BTV	Orleans	57 min
Jul 21, 2:17 PM EDT	Special Weather Statement	BTV	Windsor	58 min
Jul 21, 2:25 PM EDT	Special Weather Statement	BTV	Essex	50 min
Jul 21, 2:31 PM EDT	Severe Thunderstorm Warning	BTV	Essex	44 min
Jul 21, 3:00 PM EDT	Special Weather Statement	BTV	Lamoille	60 min
Jul 21, 3:31 PM EDT	Special Weather Statement	BTV	Chittenden, Lamoille	44 min
Jul 21, 3:36 PM EDT	Special Weather Statement	BTV	Washington	54 min
Jul 21, 3:42 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Chittenden, Franklin, Lamoille, Washington	21 min
Jul 21, 4:00 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Chittenden, Orange, Washington	60 min
Jul 21, 4:08 PM EDT	Special Weather Statement	BTV	Franklin, Orleans	67 min
Jul 21, 4:16 PM EDT	Severe Thunderstorm Warning	BTV	Caledonia, Chittenden, Franklin, Lamoille, Orleans, Washington	59 min
Jul 21, 4:19 PM EDT	Special Weather Statement	BTV	Addison, Rutland	56 min
Jul 21, 4:27 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Orange, Rutland, Windsor	63 min
Jul 21, 5:11 PM EDT	Special Weather Statement	BTV	Washington	64 min
Jul 21, 5:14 PM EDT	Special Weather Statement	BTV	Essex, Orleans	61 min
Jul 21, 5:19 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Orange, Rutland, Washington, Windsor	86 min
Jul 21, 5:46 PM EDT	Severe Thunderstorm Warning	BTV	Caledonia, Essex, Orleans	29 min
Jul 21, 10:43 AM EDT	Special Weather Statement	BTV	Essex	47 min

Nearby

Severe Thunderstorm Warnings in Vermont, 2022 Every severe thunderstorm warning in 2022

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.