Alert archive / Vermont / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 16, NWS Burlington, VT

June 23, 2015Caledonia County, Essex County, Vermont

NWS Burlington, VT issued this severe thunderstorm warning at Jun 23, 2015, 5:41 PM EDT for Caledonia County, Essex County, Vermont. It was in force for 35 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: Jun 23, 2015, 5:41 PM EDT (21:41 UTC)
Expired: Jun 23, 2015, 6:16 PM EDT
In force: 35 min
Issued by: NWS Burlington, VT
Area: Storm-based polygon

Counties Caledonia County, VT, Essex County, VT

The radar

The Burlington radar (KCXX), 99 km from the middle of the area, began a volume at 21:41 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

Gray, ME (KGYX), launched 12:00Z, 9.7 hours before the alert went out and 154 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: 17 J/kg
Mixed-layer CIN: -121 J/kg
Mixed-layer LCL: 952 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 241 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 Jun 23, 4:14 PM EDT, 1 hour 27 minutes earlier.

Area forecast discussion, Jun 23, 4:14 PM EDT, 1 hour 27 minutes before

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Hazardous weather outlook, Jun 23, 3:39 PM EDT, 2 hours 2 minutes before

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In the hours before

Special weather statement, Jun 23, 3:50 PM EDT, 1 hour 51 minutes before

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Special weather statement, Jun 23, 4:22 PM EDT, 1 hour 19 minutes before

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Special weather statement, Jun 23, 4:48 PM EDT, 53 minutes before

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Special weather statement, Jun 23, 5:05 PM EDT, 36 minutes before

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Special weather statement, Jun 23, 5:20 PM EDT, 21 minutes before

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Special weather statement, Jun 23, 5:32 PM EDT, 9 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
Jun 23, 3:42 PM EDT	Special Weather Statement	BTV	Orange	33 min
Jun 23, 3:50 PM EDT	Special Weather Statement	BTV	Essex, Orleans	55 min
Jun 23, 4:22 PM EDT	Special Weather Statement	BTV	Rutland, Windsor	53 min
Jun 23, 4:48 PM EDT	Special Weather Statement	BTV	Essex	27 min
Jun 23, 5:05 PM EDT	Special Weather Statement	BTV	Lamoille	25 min
Jun 23, 5:20 PM EDT	Special Weather Statement	BTV	Windsor	55 min
Jun 23, 5:32 PM EDT	Special Weather Statement	BTV	Orleans	28 min
Jun 23, 6:00 PM EDT	Special Weather Statement	BTV	Essex	30 min
Jun 23, 7:44 AM EDT	Flash Flood Warning	BTV	St. Lawrence	4 hr
Jun 23, 11:17 AM EDT	Areal Flood Warning	BTV	Clinton, Essex, Franklin	47 hr

Nearby

Severe Thunderstorm Warnings in Vermont, 2015 Every severe thunderstorm warning in 2015

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.