Alert archive / Virginia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 154, NWS Wakefield, VA

August 10, 2007Brunswick County, Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Aug 10, 2007, 6:13 PM EDT for Brunswick County, Virginia. It was in force for 47 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, 2007, 6:13 PM EDT (22:13 UTC)
Expired: Aug 10, 2007, 7:00 PM EDT
In force: 47 min
Issued by: NWS Wakefield, VA
Area: Counties, with a storm outline in the text

County Brunswick County, VA

The radar

The Norfolk radar (KAKQ), 80 km from the middle of the area, began a volume at 22:13 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 10, 1:43 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Newport, NC (KMHX), launched 12:00Z, 10.2 hours before the alert went out and 238 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: 2847 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 645 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 7.7

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 Wakefield, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 10, 3:45 PM EDT, 2 hours 28 minutes earlier.

Area forecast discussion, Aug 10, 3:45 PM EDT, 2 hours 28 minutes before

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Hazardous weather outlook, Aug 10, 4:42 PM EDT, 1 hour 31 minutes before

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In the hours before

Special weather statement, Aug 10, 4:18 PM EDT, 1 hour 55 minutes before

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Special weather statement, Aug 10, 4:40 PM EDT, 1 hour 33 minutes before

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Special weather statement, Aug 10, 4:42 PM EDT, 1 hour 31 minutes before

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Local storm report, Aug 10, 5:09 PM EDT, 1 hour 4 minutes before

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Special weather statement, Aug 10, 5:19 PM EDT, 54 minutes before

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Special weather statement, Aug 10, 6:08 PM EDT, 5 minutes before

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The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 9, 8:47 PM EDT	Severe Thunderstorm Warning	AKQ	Amelia	43 min
Aug 9, 10:38 PM EDT	Special Marine Warning	AKQ		52 min
Aug 9, 11:47 PM EDT	Special Marine Warning	AKQ		33 min
Aug 9, 11:48 PM EDT	Marine Weather Statement	AKQ		87 min
Aug 10, 12:29 AM EDT	Marine Weather Statement	AKQ		61 min
Aug 10, 1:48 AM EDT	Severe Thunderstorm Warning	AKQ	Hanover, King and Queen, King William, New Kent	42 min
Aug 10, 1:49 AM EDT	Special Marine Warning	AKQ		86 min
Aug 10, 1:57 AM EDT	Severe Thunderstorm Warning	AKQ	Charles City, James City, New Kent, Prince George	48 min
Aug 10, 3:03 AM EDT	Marine Weather Statement	AKQ		87 min
Aug 10, 3:54 AM EDT	Marine Weather Statement	AKQ		66 min
Aug 10, 1:31 PM EDT	Severe Thunderstorm Warning	AKQ	Southampton, City of Franklin	59 min
Aug 10, 1:58 PM EDT	Severe Thunderstorm Warning	AKQ	Isle of Wight, City of Suffolk	62 min
Aug 10, 2:39 PM EDT	Severe Thunderstorm Warning	AKQ	City of Chesapeake	66 min
Aug 10, 2:48 PM EDT	Severe Thunderstorm Warning	AKQ	Southampton, City of Franklin	42 min
Aug 10, 2:58 PM EDT	Marine Weather Statement	AKQ		2 hr
Aug 10, 3:39 PM EDT	Special Marine Warning	AKQ		96 min
Aug 10, 5:11 PM EDT	Special Marine Warning	AKQ		24 min
Aug 10, 6:44 PM EDT	Severe Thunderstorm Warning	AKQ	Greensville, City of Emporia	46 min
Aug 10, 2:28 PM EDT	Areal Flood Advisory	AKQ	Northampton	3 hr
Aug 10, 2:47 PM EDT	Severe Thunderstorm Warning	AKQ	Camden, Gates, Pasquotank	58 min
Aug 10, 3:03 PM EDT	Areal Flood Advisory	AKQ	Gates	3 hr
Aug 10, 3:11 PM EDT	Severe Thunderstorm Warning	AKQ	Chowan, Perquimans	64 min
Aug 10, 3:16 PM EDT	Severe Thunderstorm Warning	AKQ	Currituck	74 min

Nearby

Severe Thunderstorm Warnings in Virginia, 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.