Alert archive / Vermont / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 118, NWS Burlington, VT

August 25, 2007Windsor County, Vermont

NWS Burlington, VT issued this severe thunderstorm warning at Aug 25, 2007, 9:00 PM EDT for Windsor County, Vermont. It was in force for 60 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 25, 2007, 9:00 PM EDT (01:00 UTC)
Expired: Aug 25, 2007, 10:00 PM EDT
In force: 60 min
Issued by: NWS Burlington, VT
Area: Counties, with a storm outline in the text

County Windsor County, VT

The radar

The Burlington radar (KCXX), 113 km from the middle of the area, began a volume at 01:00 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
Aug 25, 1:58 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 1.0 hours before the alert went out and 141 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: 3864 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 1112 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 260 m²/s²
0-3 km storm-relative helicity: 302 m²/s²
Significant tornado parameter: 3.6
Supercell composite: 21.1

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 Aug 25, 5:41 PM EDT, 3 hours 19 minutes earlier.

Area forecast discussion, Aug 25, 5:41 PM EDT, 3 hours 19 minutes before

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Hazardous weather outlook, Aug 25, 7:51 PM EDT, 1 hour 9 minutes before

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In the hours before

Local storm report, Aug 25, 7:07 PM EDT, 1 hour 53 minutes before

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Local storm report, Aug 25, 7:08 PM EDT, 1 hour 52 minutes before

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Local storm report, Aug 25, 7:17 PM EDT, 1 hour 43 minutes before

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Local storm report, Aug 25, 7:31 PM EDT, 1 hour 29 minutes before

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Local storm report, Aug 25, 7:34 PM EDT, 1 hour 26 minutes before

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Local storm report, Aug 25, 7:42 PM EDT, 1 hour 18 minutes before

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Nearby

Severe Thunderstorm Warnings in Vermont, 2007 Every severe thunderstorm warning in 2007

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.