Alert archive / Virginia / High Wind Watches in 2019

High Wind Watch 2, NWS Baltimore/Washington

November 26, 201915 counties in Virginia; Allegany County, Maryland; 5 counties in West Virginia

NWS Baltimore/Washington issued this high wind watch at Nov 26, 2019, 2:47 PM EST for 15 counties in Virginia; Allegany County, Maryland; 5 counties in West Virginia. It took effect at Nov 27, 2019, 6:00 PM EST. It was in force for .

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, 6:00 PM EST
Expired: Nov 27, 2019, 3:49 AM EST
In force
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 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 134 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 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 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	Wind Advisory	LWX	Albemarle, Amherst, Arlington, Augusta, Clarke, Fairfax and 20 more	45 hr

Nearby

High Wind Watches in Virginia, 2019 High Wind Watches in West Virginia, 2019 High Wind Watches in Maryland, 2019 Every high wind watch 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.