Alert archive / Virginia / Wind Advisories in 2008

Wind Advisory 5, NWS Baltimore/Washington

March 7, 200826 counties in Virginia; 11 counties in Maryland; 7 counties in West Virginia

NWS Baltimore/Washington issued this wind advisory at Mar 7, 2008, 3:42 PM EST for 26 counties in Virginia; 11 counties in Maryland; 7 counties in West Virginia. It took effect at Mar 8, 2008, 3:06 AM EST. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued: Mar 7, 2008, 3:42 PM EST (20:42 UTC)
In effect from: Mar 8, 2008, 3:06 AM EST
Expired: Mar 9, 2008, 3:59 AM EDT
In force: 24 hr
Issued by: NWS Baltimore/Washington

All 44 counties

Allegany County, MD, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Carroll County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Prince George's County, MD, Saint Mary's County, MD, Washington County, MD, Arlington County, VA, City of Alexandria, VA, City of Charlottesville, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Frederick County, VA, Greene County, VA, King George County, VA, Madison County, VA, Nelson County, VA, Orange County, VA, Page County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Berkeley County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV

The radar

The Sterling radar (KLWX), 39 km from the middle of the area, began a volume at 20:41 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

Roanoke, VA (KRNK), launched 12:00Z, 8.7 hours before the alert went out and 229 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: 2 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 516 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 195 m²/s²
0-3 km storm-relative helicity: 382 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 7, 3:20 PM EST, 22 minutes earlier.

Area forecast discussion, Mar 7, 3:20 PM EST, 22 minutes before

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Hazardous weather outlook, Mar 7, 11:36 AM EST, 4 hours 6 minutes before

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In the hours before

Local storm report, Mar 7, 10:44 AM EST, 4 hours 58 minutes before

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Special weather statement, Mar 7, 12:51 PM EST, 2 hours 51 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
Mar 7, 11:21 AM EST	Flood Watch	LWX	Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church	10 hr

Nearby

Wind Advisories in Virginia, 2008 Wind Advisories in Maryland, 2008 Wind Advisories in West Virginia, 2008 Every wind advisory in 2008

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.