Alert archive / Virginia / Wind Advisories in 2013

Wind Advisory 5, NWS Baltimore/Washington

March 6, 20139 counties in Virginia; 7 counties in Maryland

NWS Baltimore/Washington issued this wind advisory at Mar 6, 2013, 4:27 PM EST for 9 counties in Virginia; 7 counties in Maryland. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Mar 6, 2013, 4:27 PM EST (21:27 UTC)
Expired: Mar 6, 2013, 8:14 PM EST
In force: 4 hr
Issued by: NWS Baltimore/Washington

Counties Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Charles County, MD, City of Baltimore, MD, Prince George's County, MD, Saint Mary's County, MD, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, Fairfax County, VA, King George County, VA, Spotsylvania County, VA, Stafford County, VA

The radar

The Sterling radar (KLWX), 51 km from the middle of the area, began a volume at 21:26 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.5 hours before the alert went out and 117 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 464 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 314 m²/s²
0-3 km storm-relative helicity: 546 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind advisory 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 wind advisory went out at Mar 6, 4:15 PM EST, 12 minutes earlier.

Area forecast discussion, Mar 6, 4:15 PM EST, 12 minutes before

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Hazardous weather outlook, Mar 6, 1:13 PM EST, 3 hours 14 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 5, 9:12 PM EST	Coastal Flood Advisory	LWX	Arlington, City of Alexandria, City of Falls Church	17 hr
Mar 6, 3:38 AM EST	Small Craft Advisory	LWX		48 hr
Mar 6, 2:29 PM EST	Winter Weather Advisory	LWX	Arlington, Culpeper, Fairfax, Fauquier, Greene, King George and 11 more	105 min
Mar 6, 12:07 PM EST	Winter Weather Advisory	LWX	Calvert, Saint Mary's	2 hr

Nearby

Wind Advisories in Virginia, 2013 Wind Advisories in Maryland, 2013 Every wind advisory in 2013

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.