Alert archive / Virginia / Wind Advisories in 2019

Wind Advisory 10, NWS Baltimore/Washington

February 12, 201915 counties in Virginia; Allegany County, Maryland; 5 counties in West Virginia

NWS Baltimore/Washington issued this wind advisory at Feb 12, 2019, 1:57 PM EST for 15 counties in Virginia; Allegany County, Maryland; 5 counties in West Virginia. It took effect at Feb 13, 2019, 1:00 AM EST. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Feb 12, 2019, 1:57 PM EST (18:57 UTC)
In effect from: Feb 13, 2019, 1:00 AM EST
Expired: Feb 13, 2019, 2:00 PM EST
In force: 13 hr
Issued by: NWS Baltimore/Washington

All 21 counties

Allegany County, MD, Albemarle County, VA, Amherst County, VA, Augusta County, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, Greene County, VA, Highland County, VA, Madison County, VA, Nelson County, VA, Page County, VA, Rappahannock County, VA, Rockbridge County, VA, Rockingham County, VA, Warren County, VA, Grant County, WV, Hampshire County, WV, Hardy County, WV, Mineral County, WV, Pendleton County, WV

The radar

The Sterling radar (KLWX), 128 km from the middle of the area, began a volume at 18:58 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

Pittsburgh, PA (KAGC), launched 12:00Z, 7.0 hours before the alert went out and 236 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: 712 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 114 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 Feb 12, 10:05 AM EST, 3 hours 52 minutes earlier.

Area forecast discussion, Feb 12, 10:05 AM EST, 3 hours 52 minutes before

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Hazardous weather outlook, Feb 12, 12:49 PM EST, 1 hour 8 minutes before

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In the hours before

Local storm report, Feb 12, 1:16 PM EST, 41 minutes before

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Local storm report, Feb 12, 1:23 PM EST, 34 minutes before

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Local storm report, Feb 12, 1:33 PM EST, 24 minutes before

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Local storm report, Feb 12, 1:37 PM EST, 20 minutes before

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Local storm report, Feb 12, 1:39 PM EST, 18 minutes before

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Local storm report, Feb 12, 1:45 PM EST, 12 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
Feb 12, 3:27 AM EST	Gale Warning	LWX		31 hr
Feb 12, 3:27 AM EST	Small Craft Advisory	LWX		42 hr
Feb 12, 8:58 AM EST	Winter Weather Advisory	LWX	Baltimore, Howard, Montgomery, City of Baltimore	7 hr
Feb 12, 1:57 PM EST	High Wind Warning	LWX	Grant, Pendleton	21 hr
Feb 12, 3:23 PM EST	River Flood Warning	LWX	Berkeley, Jefferson	22 hr

Nearby

Wind Advisories in Virginia, 2019 Wind Advisories in West Virginia, 2019 Wind Advisories in Maryland, 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.