Alert archive / Virginia / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 40, NWS Wakefield, VA

May 21, 2014Lancaster County, Mathews County, Middlesex County, Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at May 21, 2014, 8:28 PM EDT for Lancaster County, Mathews County, Middlesex 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: May 21, 2014, 8:28 PM EDT (00:28 UTC)
Expired: May 21, 2014, 9:15 PM EDT
In force: 47 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Lancaster County, VA, Mathews County, VA, Middlesex County, VA

The radar

The Norfolk radar (KAKQ), 83 km from the middle of the area, began a volume at 00:28 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 0.5 hours before the alert went out and 175 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: 261 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 1049 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 5.9

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 May 21, 8:09 PM EDT, 19 minutes earlier.

Area forecast discussion, May 21, 8:09 PM EDT, 19 minutes before

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Hazardous weather outlook, May 21, 3:57 PM EDT, 4 hours 31 minutes before

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In the hours before

Special weather statement, May 21, 7:17 PM EDT, 1 hour 11 minutes before

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Special weather statement, May 21, 7:19 PM EDT, 1 hour 9 minutes before

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Special weather statement, May 21, 7:34 PM EDT, 54 minutes before

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Special weather statement, May 21, 7:51 PM EDT, 37 minutes before

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Special weather statement, May 21, 8:15 PM EDT, 13 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
May 21, 8:27 PM EDT	Special Marine Warning	AKQ		33 min
May 21, 9:08 PM EDT	Special Weather Statement	AKQ	Mathews	22 min
May 22, 3:41 AM EDT	Small Craft Advisory	AKQ		30 hr
May 22, 3:01 PM EDT	Special Weather Statement	AKQ	Louisa	44 min
May 22, 3:44 PM EDT	Special Weather Statement	AKQ	Caroline	46 min
May 22, 3:44 PM EDT	Severe Thunderstorm Warning	AKQ	Hanover, Louisa	46 min
May 22, 4:00 PM EDT	Severe Thunderstorm Warning	AKQ	Caroline, Essex, Richmond, Westmoreland	45 min
May 22, 4:20 PM EDT	Severe Thunderstorm Warning	AKQ	Goochland, Hanover, Henrico, City of Richmond	40 min
May 22, 4:32 PM EDT	Special Weather Statement	AKQ	King William	28 min
May 22, 4:42 PM EDT	Severe Thunderstorm Warning	AKQ	Northumberland, Westmoreland	33 min
May 22, 4:56 PM EDT	Severe Thunderstorm Warning	AKQ	Charles City, Chesterfield, Hanover, Henrico, New Kent, City of Hopewell and 1 more	49 min
May 22, 5:01 PM EDT	Tornado Warning	AKQ	Charles City, Chesterfield, Henrico, City of Colonial Heights, City of Richmond	29 min
May 22, 5:04 PM EDT	Severe Thunderstorm Warning	AKQ	Caroline, Essex, King and Queen, King William	41 min
May 22, 5:15 PM EDT	Tornado Warning	AKQ	Essex, Richmond, Westmoreland	30 min
May 22, 5:21 PM EDT	Flash Flood Warning	AKQ	Charles City, Chesterfield, Hanover, Henrico, New Kent, Prince George and 2 more	84 min
May 22, 5:29 PM EDT	Tornado Warning	AKQ	Charles City, Chesterfield, Henrico, Prince George, City of Colonial Heights, City of Hopewell and 1 more	31 min
May 22, 5:41 PM EDT	Severe Thunderstorm Warning	AKQ	Caroline, Essex, King and Queen, King William	34 min
May 22, 5:45 PM EDT	Tornado Warning	AKQ	Essex, Lancaster, Richmond	30 min
May 22, 5:54 PM EDT	Special Marine Warning	AKQ		96 min
May 22, 5:56 PM EDT	Tornado Warning	AKQ	Essex, King and Queen, King William, Middlesex	34 min
May 22, 5:59 PM EDT	Tornado Warning	AKQ	Isle of Wight, Prince George, Southampton, Surry, Sussex	31 min
May 22, 6:01 PM EDT	Special Marine Warning	AKQ		89 min
May 22, 6:14 PM EDT	Severe Thunderstorm Warning	AKQ	Gloucester, Lancaster, Mathews, Middlesex, Northumberland, Richmond	46 min
May 22, 6:27 PM EDT	Tornado Warning	AKQ	Gloucester, King and Queen, King William, Middlesex, New Kent, City of Williamsburg	33 min
May 22, 6:29 PM EDT	Tornado Warning	AKQ	Isle of Wight, Southampton, Surry, Sussex, City of Franklin, City of Suffolk	46 min
May 22, 6:37 PM EDT	Special Weather Statement	AKQ	Henrico, City of Hopewell, City of Richmond	38 min
May 22, 6:57 PM EDT	Severe Thunderstorm Warning	AKQ	Gloucester, Mathews, York, City of Hampton, City of Poquoson	63 min
May 22, 7:07 PM EDT	Special Marine Warning	AKQ		83 min
May 22, 7:14 PM EDT	Tornado Warning	AKQ	Isle of Wight, Southampton, City of Franklin, City of Suffolk	31 min
May 22, 7:23 PM EDT	Special Weather Statement	AKQ	Prince George, Surry, City of Hopewell	67 min
May 22, 7:28 PM EDT	Special Marine Warning	AKQ		62 min
May 22, 7:33 PM EDT	Special Marine Warning	AKQ		87 min
May 22, 7:42 PM EDT	Special Weather Statement	AKQ	City of Chesapeake, City of Virginia Beach	48 min
May 21, 8:15 PM EDT	Special Weather Statement	AKQ	Dorchester, Wicomico, Worcester	60 min
May 22, 6:46 AM EDT	Special Weather Statement	AKQ	Dorchester	59 min
May 22, 7:42 AM EDT	Special Weather Statement	AKQ	Wicomico, Worcester	48 min
May 22, 8:30 AM EDT	Special Weather Statement	AKQ	Worcester	30 min
May 22, 5:14 PM EDT	Tornado Warning	AKQ	Dorchester	31 min
May 22, 5:45 PM EDT	Tornado Warning	AKQ	Dorchester, Wicomico	30 min
May 22, 6:04 PM EDT	Severe Thunderstorm Warning	AKQ	Wicomico, Worcester	41 min
May 22, 6:15 PM EDT	Tornado Warning	AKQ	Dorchester, Somerset, Wicomico	30 min
May 22, 6:42 PM EDT	Severe Thunderstorm Warning	AKQ	Worcester	33 min
May 22, 6:55 PM EDT	Special Weather Statement	AKQ	Dorchester	35 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2014 Every severe thunderstorm warning in 2014

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.