Alert archive / Virginia / Tornado Warnings in 2010

Tornado Warning 47, NWS Wakefield, VA

October 27, 2010Caroline County, Virginia

NWS Wakefield, VA issued this tornado warning at Oct 27, 2010, 7:09 PM EDT for Caroline County, Virginia. It was in force for 21 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: Oct 27, 2010, 7:09 PM EDT (23:09 UTC)
Expired: Oct 27, 2010, 7:30 PM EDT
In force: 21 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon

County Caroline County, VA

The radar

The Sterling radar (KLWX), 106 km from the middle of the area, began a volume at 23:09 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
Oct 27, 12:13 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.2 hours before the alert went out and 103 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: 402 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 591 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 226 m²/s²
0-3 km storm-relative helicity: 239 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Oct 27, 6:11 PM EDT, 58 minutes earlier.

Area forecast discussion, Oct 27, 6:11 PM EDT, 58 minutes before

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Hazardous weather outlook, Oct 27, 6:51 PM EDT, 18 minutes before

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In the hours before

Local storm report, Oct 27, 5:34 PM EDT, 1 hour 35 minutes before

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Local storm report, Oct 27, 5:57 PM EDT, 1 hour 12 minutes before

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Local storm report, Oct 27, 6:03 PM EDT, 1 hour 6 minutes before

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Local storm report, Oct 27, 6:18 PM EDT, 51 minutes before

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Local storm report, Oct 27, 6:20 PM EDT, 49 minutes before

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Local storm report, Oct 27, 6:55 PM EDT, 14 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
Oct 27, 2:33 AM EDT	Special Weather Statement	AKQ	Lunenburg, Mecklenburg	72 min
Oct 27, 2:49 AM EDT	Severe Thunderstorm Warning	AKQ	Lunenburg, Mecklenburg	56 min
Oct 27, 3:04 AM EDT	Tornado Warning	AKQ	Lunenburg, Mecklenburg	26 min
Oct 27, 3:45 AM EDT	Areal Flood Advisory	AKQ	Lunenburg, Mecklenburg	60 min
Oct 27, 4:16 AM EDT	Special Weather Statement	AKQ	Dinwiddie	59 min
Oct 27, 5:05 AM EDT	Special Weather Statement	AKQ	Lunenburg, Mecklenburg, Nottoway	55 min
Oct 27, 8:08 AM EDT	Special Weather Statement	AKQ	Caroline	52 min
Oct 27, 1:30 PM EDT	Special Weather Statement	AKQ	Cumberland, Goochland	60 min
Oct 27, 2:32 PM EDT	Special Weather Statement	AKQ	Hanover, King William	58 min
Oct 27, 3:42 PM EDT	Severe Thunderstorm Warning	AKQ	Amelia, Cumberland, Goochland, Powhatan	48 min
Oct 27, 3:53 PM EDT	Tornado Warning	AKQ	Amelia, Cumberland, Powhatan	37 min
Oct 27, 4:23 PM EDT	Tornado Warning	AKQ	Amelia, Chesterfield, Powhatan, City of Richmond	37 min
Oct 27, 4:26 PM EDT	Tornado Warning	AKQ	Caroline	36 min
Oct 27, 4:48 PM EDT	Tornado Warning	AKQ	Caroline, Essex, Westmoreland	42 min
Oct 27, 4:53 PM EDT	Tornado Warning	AKQ	Chesterfield, Goochland, Hanover, Henrico, New Kent, City of Richmond	37 min
Oct 27, 5:17 PM EDT	Special Weather Statement	AKQ	Brunswick	73 min
Oct 27, 5:31 PM EDT	Severe Thunderstorm Warning	AKQ	Brunswick, Mecklenburg	44 min
Oct 27, 5:31 PM EDT	Tornado Warning	AKQ	Essex, Hanover, King and Queen, King William, New Kent	29 min
Oct 27, 5:38 PM EDT	Tornado Warning	AKQ	Brunswick, Mecklenburg	32 min
Oct 27, 6:00 PM EDT	Tornado Warning	AKQ	Essex, King and Queen, Lancaster, Middlesex, Northumberland, Richmond	45 min
Oct 27, 6:06 PM EDT	Severe Thunderstorm Warning	AKQ	Brunswick, Greensville, Southampton, Sussex, City of Emporia	39 min
Oct 27, 6:10 PM EDT	Special Marine Warning	AKQ		110 min
Oct 27, 6:45 PM EDT	Tornado Warning	AKQ	Lancaster, Northumberland	15 min
Oct 27, 7:15 PM EDT	Tornado Warning	AKQ	Brunswick, Greensville, Mecklenburg	45 min
Oct 27, 7:18 PM EDT	Special Weather Statement	AKQ	Amelia, Cumberland, Goochland, Powhatan, Prince Edward	57 min
Oct 27, 7:30 PM EDT	Severe Thunderstorm Warning	AKQ	Accomack	45 min
Oct 27, 7:34 PM EDT	Severe Thunderstorm Warning	AKQ	Goochland, Hanover, Henrico, Louisa, Powhatan	41 min

Nearby

Tornado Warnings in Virginia, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.