Alert archive / Virginia / High Wind Watches in 2008

High Wind Watch 2, NWS Baltimore/Washington

September 24, 200815 counties in Virginia; Allegany County, Frederick County, Washington County, Maryland; 7 counties in West Virginia

NWS Baltimore/Washington issued this high wind watch at Sep 24, 2008, 11:47 AM EDT for 15 counties in Virginia; Allegany County, Frederick County, Washington County, Maryland; 7 counties in West Virginia. It took effect at Sep 25, 2008, 8:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Sep 24, 2008, 11:47 AM EDT (15:47 UTC)
In effect from: Sep 25, 2008, 8:00 AM EDT
Expired: Sep 25, 2008, 4:39 AM EDT
In force
Issued by: NWS Baltimore/Washington

All 25 counties

Allegany County, MD, Frederick County, MD, Washington County, MD, City of Charlottesville, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Frederick County, VA, Greene County, VA, Madison County, VA, Nelson County, VA, Page County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah 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), 84 km from the middle of the area, began a volume at 15:51 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, 3.8 hours before the alert went out and 213 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: 868 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 62 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 high wind watch 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 high wind watch went out at Sep 24, 4:21 AM EDT, 7 hours 26 minutes earlier.

Area forecast discussion, Sep 24, 4:21 AM EDT, 7 hours 26 minutes before

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Hazardous weather outlook, Sep 24, 11:47 AM EDT, 0 minutes before

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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 24, 4:22 AM EDT	Gale Warning	LWX		48 hr
Sep 24, 2:51 PM EDT	Coastal Flood Advisory	LWX	Arlington, Fairfax, King George, Stafford, City of Alexandria, City of Fairfax and 1 more	32 hr

Nearby

High Wind Watches in Virginia, 2008 High Wind Watches in West Virginia, 2008 High Wind Watches in Maryland, 2008 Every high wind watch 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.