Alert archive / Virginia / Wind Advisories in 2019

Wind Advisory 15, NWS Baltimore/Washington

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

NWS Baltimore/Washington issued this wind advisory at Apr 26, 2019, 5:39 PM EDT for 26 counties in Virginia; 11 counties in Maryland; 8 counties in West Virginia. It took effect at Apr 26, 2019, 6:00 PM EDT. It was in force for 19 hr.

The area

The counties it named.

The facts

Issued: Apr 26, 2019, 5:39 PM EDT (21:39 UTC)
In effect from: Apr 26, 2019, 6:00 PM EDT
Expired: Apr 27, 2019, 1:07 PM EDT
In force: 19 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 21:40 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, 9.7 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: 49 J/kg
Mixed-layer CIN: -221 J/kg
Mixed-layer LCL: 715 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 293 m²/s²
0-3 km storm-relative helicity: 355 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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 Apr 26, 3:13 PM EDT, 2 hours 26 minutes earlier.

Area forecast discussion, Apr 26, 3:13 PM EDT, 2 hours 26 minutes before

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Hazardous weather outlook, Apr 26, 5:13 PM EDT, 26 minutes before

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In the hours before

Local storm report, Apr 26, 5:23 PM EDT, 16 minutes before

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Local storm report, Apr 26, 5:31 PM EDT, 8 minutes before

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Local storm report, Apr 26, 5:34 PM EDT, 5 minutes before

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Local storm report, Apr 26, 5:36 PM EDT, 3 minutes before

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Local storm report, Apr 26, 5:37 PM EDT, 2 minutes before

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Local storm report, Apr 26, 5:39 PM EDT, 0 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
Apr 26, 4:03 AM EDT	Gale Warning	LWX		34 hr
Apr 26, 9:59 AM EDT	Small Craft Advisory	LWX		34 hr
Apr 26, 11:50 AM EDT	Special Marine Warning	LWX		85 min
Apr 26, 1:14 PM EDT	Severe Thunderstorm Warning	LWX	Albemarle, City of Charlottesville	46 min
Apr 26, 1:33 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Madison, Orange, Spotsylvania	57 min
Apr 26, 1:51 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier, Prince William, Rappahannock	39 min
Apr 26, 2:20 PM EDT	Severe Thunderstorm Warning	LWX	Fairfax, Loudoun, City of Fairfax	40 min
Apr 26, 2:25 PM EDT	Severe Thunderstorm Warning	LWX	Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church	50 min
Apr 26, 2:26 PM EDT	Special Marine Warning	LWX		49 min
Apr 26, 2:29 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier, King George, Orange, Spotsylvania, Stafford and 1 more	46 min
Apr 26, 2:33 PM EDT	Special Marine Warning	LWX		42 min
Apr 26, 2:39 PM EDT	Tornado Warning	LWX	Fairfax	19 min
Apr 26, 2:44 PM EDT	Special Marine Warning	LWX		2 hr
Apr 26, 2:56 PM EDT	Severe Thunderstorm Warning	LWX	Fairfax, Prince William, City of Fairfax	49 min
Apr 26, 3:03 PM EDT	Special Marine Warning	LWX		87 min
Apr 26, 3:07 PM EDT	Special Marine Warning	LWX		38 min
Apr 26, 3:11 PM EDT	Special Marine Warning	LWX		49 min
Apr 26, 3:14 PM EDT	Special Marine Warning	LWX		80 min
Apr 26, 3:53 PM EDT	Special Marine Warning	LWX		79 min
Apr 26, 2:03 PM EDT	Coastal Flood Advisory	LWX	Harford	5 hr
Apr 26, 2:37 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Carroll, Howard, City of Baltimore	38 min
Apr 26, 3:00 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Prince George's	45 min
Apr 26, 3:08 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford	67 min
Apr 26, 3:13 PM EDT	Tornado Warning	LWX	Baltimore, Harford	32 min
Apr 26, 3:23 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's	67 min
Apr 26, 3:26 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, Howard, City of Baltimore	39 min
Apr 26, 3:37 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel	26 min

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.