Alert archive / Virginia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 201, NWS Baltimore/Washington

June 10, 2011Orange County, Spotsylvania County, Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 10, 2011, 12:14 AM EDT for Orange County, Spotsylvania County, Virginia. It was in force for 30 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 10, 2011, 12:14 AM EDT (04:14 UTC)
Expired: Jun 10, 2011, 12:44 AM EDT
In force: 30 min
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon

Counties Orange County, VA, Spotsylvania County, VA

The radar

The Sterling radar (KLWX), 90 km from the middle of the area, began a volume at 04:16 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, 4.2 hours before the alert went out and 90 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: 1601 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 1529 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -1.2

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 Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 9, 9:07 PM EDT, 3 hours 7 minutes earlier.

Area forecast discussion, Jun 9, 9:07 PM EDT, 3 hours 7 minutes before

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Hazardous weather outlook, Jun 9, 11:02 PM EDT, 1 hour 12 minutes before

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In the hours before

Special weather statement, Jun 9, 10:59 PM EDT, 1 hour 15 minutes before

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Special weather statement, Jun 9, 11:02 PM EDT, 1 hour 12 minutes before

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Special weather statement, Jun 9, 11:43 PM EDT, 31 minutes before

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Local storm report, Jun 9, 11:56 PM EDT, 18 minutes before

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Local storm report, Jun 9, 11:57 PM EDT, 17 minutes before

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Special weather statement, Jun 9, 11:58 PM EDT, 16 minutes before

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The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 9, 8:32 PM EDT	Special Marine Warning	LWX		88 min
Jun 9, 8:39 PM EDT	Special Marine Warning	LWX		45 min
Jun 9, 9:43 PM EDT	Special Weather Statement	LWX	City of Waynesboro	32 min
Jun 9, 9:58 PM EDT	Special Weather Statement	LWX	Culpeper	32 min
Jun 9, 10:16 PM EDT	Special Weather Statement	LWX	Greene	29 min
Jun 9, 10:24 PM EDT	Special Weather Statement	LWX	Culpeper	36 min
Jun 9, 10:30 PM EDT	Special Weather Statement	LWX	Albemarle, City of Charlottesville	45 min
Jun 9, 10:46 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier	44 min
Jun 9, 10:59 PM EDT	Special Weather Statement	LWX	Culpeper	31 min
Jun 9, 11:02 PM EDT	Special Weather Statement	LWX	Prince William, City of Manassas, City of Manassas Park	28 min
Jun 9, 11:08 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier, Stafford	37 min
Jun 9, 11:13 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fairfax, Fauquier, Prince William, Stafford, City of Manassas	32 min
Jun 9, 11:18 PM EDT	Special Marine Warning	LWX		87 min
Jun 9, 11:20 PM EDT	Severe Thunderstorm Warning	LWX	Fairfax, Prince William	40 min
Jun 9, 11:22 PM EDT	Severe Thunderstorm Warning	LWX	Albemarle	53 min
Jun 9, 11:27 PM EDT	Special Marine Warning	LWX		63 min
Jun 9, 11:29 PM EDT	Severe Thunderstorm Warning	LWX	Albemarle, Culpeper, Fauquier, Orange, Spotsylvania, Stafford	46 min
Jun 9, 11:58 PM EDT	Special Weather Statement	LWX	Stafford	32 min
Jun 10, 12:16 AM EDT	Special Weather Statement	LWX	Albemarle, Culpeper, Greene, City of Charlottesville	44 min
Jun 10, 12:18 AM EDT	Special Weather Statement	LWX	Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church	42 min
Jun 10, 12:30 AM EDT	Special Marine Warning	LWX		60 min
Jun 10, 12:42 AM EDT	Special Weather Statement	LWX	Culpeper, Fairfax, Orange, Prince William, Spotsylvania, Stafford and 4 more	48 min
Jun 10, 12:46 AM EDT	Special Marine Warning	LWX		59 min
Jun 10, 12:49 AM EDT	Special Marine Warning	LWX		56 min
Jun 10, 12:53 AM EDT	Special Weather Statement	LWX	Fauquier	37 min
Jun 10, 1:03 AM EDT	Special Weather Statement	LWX	Greene, Madison	27 min
Jun 10, 1:06 AM EDT	Special Weather Statement	LWX	Culpeper, Fauquier, Orange	24 min
Jun 10, 1:27 AM EDT	Special Weather Statement	LWX	Culpeper, Fauquier	48 min
Jun 10, 1:29 AM EDT	Special Marine Warning	LWX		61 min
Jun 10, 1:41 AM EDT	Special Marine Warning	LWX		49 min
Jun 10, 3:55 PM EDT	Special Weather Statement	LWX	Frederick	35 min
Jun 10, 4:45 PM EDT	Special Weather Statement	LWX	Augusta, City of Staunton	30 min
Jun 10, 4:52 PM EDT	Special Weather Statement	LWX	Clarke, Frederick, City of Winchester	23 min
Jun 10, 5:06 PM EDT	Special Weather Statement	LWX	City of Harrisonburg	24 min
Jun 10, 5:12 PM EDT	Special Weather Statement	LWX	Augusta, City of Staunton	33 min
Jun 10, 5:21 PM EDT	Special Weather Statement	LWX	Clarke, City of Winchester	24 min
Jun 10, 5:30 PM EDT	Special Weather Statement	LWX	City of Harrisonburg	30 min
Jun 10, 5:42 PM EDT	Special Weather Statement	LWX	Nelson	33 min
Jun 10, 5:55 PM EDT	Special Weather Statement	LWX	City of Fairfax	35 min
Jun 10, 5:58 PM EDT	Special Weather Statement	LWX	Albemarle, City of Charlottesville	32 min
Jun 10, 6:05 PM EDT	Special Weather Statement	LWX	Madison	25 min
Jun 10, 6:10 PM EDT	Special Weather Statement	LWX	Nelson	35 min
Jun 10, 6:15 PM EDT	Special Marine Warning	LWX		75 min
Jun 10, 6:22 PM EDT	Severe Thunderstorm Warning	LWX	Albemarle, City of Charlottesville	23 min
Jun 10, 6:34 PM EDT	Special Weather Statement	LWX	City of Charlottesville	26 min
Jun 10, 6:40 PM EDT	Special Weather Statement	LWX	Albemarle, City of Charlottesville	35 min
Jun 10, 6:53 PM EDT	Severe Thunderstorm Warning	LWX	Albemarle, City of Charlottesville	26 min
Jun 10, 7:05 PM EDT	Special Marine Warning	LWX		39 min
Jun 10, 7:14 PM EDT	Special Weather Statement	LWX	Albemarle	31 min
Jun 10, 7:24 PM EDT	Special Weather Statement	LWX		51 min
Jun 9, 8:04 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, Howard, City of Baltimore	41 min
Jun 9, 8:15 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Carroll, City of Baltimore	45 min
Jun 9, 8:38 PM EDT	Special Weather Statement	LWX	Anne Arundel	37 min
Jun 9, 8:40 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford, City of Baltimore	33 min
Jun 9, 10:19 PM EDT	Special Weather Statement	LWX	Washington	26 min
Jun 9, 11:26 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel	35 min
Jun 10, 12:07 AM EDT	Severe Thunderstorm Warning	LWX	Charles, Prince George's	38 min
Jun 10, 12:19 AM EDT	Special Weather Statement	LWX	Anne Arundel	41 min
Jun 10, 12:38 AM EDT	Special Weather Statement	LWX	Calvert, Charles	22 min
Jun 10, 1:15 AM EDT	Special Weather Statement	LWX	Calvert	45 min
Jun 10, 3:00 PM EDT	Special Weather Statement	LWX	Washington	30 min
Jun 10, 5:49 PM EDT	Special Weather Statement	LWX	Howard	26 min
Jun 10, 6:12 PM EDT	Special Weather Statement	LWX	Howard	33 min
Jun 10, 6:42 PM EDT	Special Weather Statement	LWX	Howard, City of Baltimore	48 min
Jun 10, 6:55 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, Howard, City of Baltimore	26 min
Jun 10, 7:12 PM EDT	Special Weather Statement	LWX	City of Baltimore	33 min
Jun 9, 9:53 PM EDT	Special Weather Statement	LWX	Grant	37 min
Jun 9, 10:28 PM EDT	Special Weather Statement	LWX	Grant	47 min
Jun 10, 1:55 PM EDT	Special Weather Statement	LWX	Morgan	35 min
Jun 10, 2:23 PM EDT	Special Weather Statement	LWX	Morgan	37 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2011 Every severe thunderstorm warning in 2011

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.