Alert archive / Virginia / Winter Storm Warnings in 2013

Winter Storm Warning 1, NWS Wakefield, VA

January 17, 201332 counties in Virginia; Dorchester County, Somerset County, Wicomico County, Maryland; Northampton County, North Carolina

NWS Wakefield, VA issued this winter storm warning at Jan 17, 2013, 4:15 AM EST for 32 counties in Virginia; Dorchester County, Somerset County, Wicomico County, Maryland; Northampton County, North Carolina. It took effect at Jan 17, 2013, 3:05 PM EST. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 17, 2013, 4:15 AM EST (09:15 UTC)
In effect from: Jan 17, 2013, 3:05 PM EST
Expired: Jan 18, 2013, 3:34 AM EST
In force: 12 hr
Issued by: NWS Wakefield, VA

All 36 counties

Dorchester County, MD, Somerset County, MD, Wicomico County, MD, Northampton County, NC, Amelia County, VA, Brunswick County, VA, Caroline County, VA, Charles City County, VA, City of Emporia, VA, City of Franklin, VA, City of Hopewell, VA, City of Petersburg, VA, City of Williamsburg, VA, Cumberland County, VA, Dinwiddie County, VA, Fluvanna County, VA, Gloucester County, VA, Goochland County, VA, Greensville County, VA, James City County, VA, Lancaster County, VA, Lunenburg County, VA, Mathews County, VA, Mecklenburg County, VA, Middlesex County, VA, New Kent County, VA, Northumberland County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Richmond County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, Westmoreland County, VA

The radar

The Norfolk radar (KAKQ), 46 km from the middle of the area, began a volume at 09:19 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

Wallops Is Stn, VA (KWAL), launched 00:00Z, 9.3 hours before the alert went out and 172 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: 588 m above ground
0-6 km bulk shear: 82 kt
0-1 km storm-relative helicity: 257 m²/s²
0-3 km storm-relative helicity: 257 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 winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wakefield, VA wrote its last area forecast discussion before this winter storm warning went out at Jan 17, 2:02 AM EST, 2 hours 13 minutes earlier.

Area forecast discussion, Jan 17, 2:02 AM EST, 2 hours 13 minutes before

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Hazardous weather outlook, Jan 16, 10:32 PM EST, 5 hours 43 minutes before

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The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 17, 3:32 AM EST	Small Craft Advisory	AKQ		9 hr
Jan 17, 4:15 AM EST	Winter Weather Advisory	AKQ	Accomack, Northampton, City of Chesapeake, City of Virginia Beach	23 hr
Jan 17, 8:52 AM EST	River Flood Warning	AKQ	Sussex	4 days
Jan 17, 3:32 PM EST	River Flood Warning	AKQ	Chesterfield, Henrico, City of Richmond	42 hr

Nearby

Winter Storm Warnings in Virginia, 2013 Winter Storm Warnings in Maryland, 2013 Winter Storm Warnings in North Carolina, 2013 Every winter storm warning in 2013

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.