Alert archive / Virginia / Winter Storm Watches in 2021

Winter Storm Watch 1, NWS Wakefield, VA

January 29, 202127 counties in Virginia; Dorchester County, Wicomico County, Maryland

NWS Wakefield, VA issued this winter storm watch at Jan 29, 2021, 3:19 PM EST for 27 counties in Virginia; Dorchester County, Wicomico County, Maryland. It took effect at Jan 30, 2021, 10:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Jan 29, 2021, 3:19 PM EST (20:19 UTC)
In effect from: Jan 30, 2021, 10:00 PM EST
Expired: Jan 30, 2021, 4:34 AM EST
In force
Issued by: NWS Wakefield, VA

All 29 counties

Dorchester County, MD, Wicomico County, MD, Amelia County, VA, Brunswick County, VA, Caroline County, VA, Chesterfield County, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Richmond, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Fluvanna County, VA, Goochland County, VA, Greensville County, VA, Hanover County, VA, Henrico County, VA, King and Queen County, VA, King William County, VA, Lancaster County, VA, Louisa County, VA, Lunenburg County, VA, Mecklenburg County, VA, Northumberland County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward County, VA, Richmond County, VA, Westmoreland County, VA

The radar

The Norfolk radar (KAKQ), 72 km from the middle of the area, began a volume at 20:17 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

Roanoke, VA (KRNK), launched 12:00Z, 8.3 hours before the alert went out and 186 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: 1288 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: -49 m²/s²
0-3 km storm-relative helicity: 53 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 watch 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 watch went out at Jan 29, 12:11 PM EST, 3 hours 8 minutes earlier.

Area forecast discussion, Jan 29, 12:11 PM EST, 3 hours 8 minutes before

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Hazardous weather outlook, Jan 29, 5:43 AM EST, 9 hours 36 minutes before

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Nearby

Winter Storm Watches in Virginia, 2021 Winter Storm Watches in Maryland, 2021 Every winter storm watch in 2021

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.