Alert archive / Virginia / Wind Advisories in 2019

Wind Advisory 8, NWS Baltimore/Washington

January 29, 201933 counties in Virginia; 14 counties in Maryland; 8 counties in West Virginia

NWS Baltimore/Washington issued this wind advisory at Jan 29, 2019, 9:00 PM EST for 33 counties in Virginia; 14 counties in Maryland; 8 counties in West Virginia. It took effect at Jan 30, 2019, 3:00 AM EST. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Jan 29, 2019, 9:00 PM EST (02:00 UTC)
In effect from: Jan 30, 2019, 3:00 AM EST
Expired: Jan 30, 2019, 4:50 PM EST
In force: 14 hr
Issued by: NWS Baltimore/Washington

All 55 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, Harford County, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Saint Mary's County, MD, Washington County, MD, Albemarle County, VA, Amherst County, VA, Arlington County, VA, Augusta 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, Fauquier County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, King George County, VA, Loudoun County, VA, Madison County, VA, Nelson County, VA, Orange County, VA, Page County, VA, Rappahannock County, VA, Rockbridge 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, Pendleton County, WV

The radar

The Sterling radar (KLWX), 47 km from the middle of the area, began a volume at 02:02 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 00:00Z, 2.0 hours before the alert went out and 53 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: 511 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: -89 m²/s²
0-3 km storm-relative helicity: -128 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 Jan 29, 3:19 PM EST, 5 hours 41 minutes earlier.

Area forecast discussion, Jan 29, 3:19 PM EST, 5 hours 41 minutes before

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Hazardous weather outlook, Jan 29, 7:30 PM EST, 1 hour 30 minutes before

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In the hours before

Local storm report, Jan 29, 7:37 PM EST, 1 hour 23 minutes before

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Local storm report, Jan 29, 7:56 PM EST, 1 hour 4 minutes before

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Local storm report, Jan 29, 7:59 PM EST, 1 hour 1 minute before

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Local storm report, Jan 29, 8:02 PM EST, 58 minutes before

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Local storm report, Jan 29, 8:05 PM EST, 55 minutes before

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Local storm report, Jan 29, 8:27 PM EST, 33 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
Jan 30, 3:31 AM EST	High Wind Warning	LWX	Albemarle, Amherst, Augusta, Greene, Highland, Madison and 6 more	13 hr
Jan 30, 3:33 AM EST	Wind Chill Advisory	LWX	Arlington, Culpeper, Fairfax, Fauquier, Greene, King George and 12 more	30 hr
Jan 30, 11:13 AM EST	Snow Squall Warning	LWX	Clarke, Fauquier, Frederick, Loudoun, Prince William, Rappahannock and 3 more	92 min
Jan 30, 3:50 PM EST	Small Craft Advisory	LWX		13 hr
Jan 30, 8:33 AM EST	Snow Squall Warning	LWX	Allegany	57 min
Jan 30, 10:13 AM EST	Snow Squall Warning	LWX	Frederick, Washington	62 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.