Alert archive / Virginia / Wind Advisories in 2019

Wind Advisory 19, NWS Baltimore/Washington

November 26, 201926 counties in Virginia; 11 counties in Maryland; 8 counties in West Virginia

NWS Baltimore/Washington issued this wind advisory at Nov 26, 2019, 2:47 PM EST for 26 counties in Virginia; 11 counties in Maryland; 8 counties in West Virginia. It took effect at Nov 27, 2019, 10:00 AM EST. It was in force for 26 hr.

The area

The counties it named.

The facts

Issued: Nov 26, 2019, 2:47 PM EST (19:47 UTC)
In effect from: Nov 27, 2019, 10:00 AM EST
Expired: Nov 28, 2019, 11:56 AM EST
In force: 26 hr
Issued by: NWS Baltimore/Washington

All 45 counties

Allegany County, MD, Anne Arundel County, MD, Baltimore County, MD, Carroll County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Washington County, MD, Albemarle County, VA, Amherst County, VA, Arlington County, VA, Augusta County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Fairfax County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, Loudoun County, VA, Madison County, VA, Nelson County, VA, Page County, VA, Rappahannock County, VA, Rockbridge 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, Pendleton County, WV

The radar

The Sterling radar (KLWX), 53 km from the middle of the area, began a volume at 19:48 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 12:00Z, 7.8 hours before the alert went out and 59 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: 1889 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 126 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 Nov 26, 2:45 PM EST, 2 minutes earlier.

Area forecast discussion, Nov 26, 2:45 PM EST, 2 minutes before

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Hazardous weather outlook, Nov 26, 9:24 AM EST, 5 hours 23 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
Nov 26, 9:37 AM EST	Small Craft Advisory	LWX		33 hr
Nov 26, 1:01 PM EST	Gale Warning	LWX		56 hr
Nov 26, 2:47 PM EST	High Wind Watch	LWX	Albemarle, Amherst, Augusta, Greene, Highland, Madison and 9 more	13 hr

Nearby

Wind Advisories in Virginia, 2019 Wind Advisories in Maryland, 2019 Wind Advisories in West Virginia, 2019 Every wind advisory in 2019

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.