Alert archive / Virginia / Tornado Warnings in 1999

Tornado Warning 1, NWS Wakefield, VA

February 12, 1999New Kent County, Virginia

NWS Wakefield, VA issued this tornado warning at Feb 12, 1999, 6:07 PM EST for New Kent County, Virginia. It was in force for 13 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 12, 1999, 6:07 PM EST (23:07 UTC)
Expired
Feb 12, 1999, 6:20 PM EST
In force
13 min
Issued by
NWS Wakefield, VA
Area
Whole counties

County New Kent County, VA

The radar

The Norfolk radar (KAKQ), 58 km from the middle of the area, began a volume at 23:11 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.

What was reported inside it

TimeReportWhereRemark
Feb 12, 6:18 PM ESTThunderstorm WindBarhamsville, VASeveral trees down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.1 hours before the alert went out and 164 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-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 1999-02-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 1999-02-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 273 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
628 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
273 m²/s²
0-3 km storm-relative helicity
353 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 12, 4:25 PM ESTSevere Thunderstorm WarningAKQLouisa25 min
Feb 12, 4:43 PM ESTSevere Thunderstorm WarningAKQAmelia, Powhatan27 min
Feb 12, 5:01 PM ESTSevere Thunderstorm WarningAKQGoochland14 min
Feb 12, 5:12 PM ESTSevere Thunderstorm WarningAKQHanover18 min
Feb 12, 5:23 PM ESTSevere Thunderstorm WarningAKQCaroline27 min
Feb 12, 6:27 PM ESTSevere Thunderstorm WarningAKQRichmond, Westmoreland18 min

Nearby

Tornado Warnings in Virginia, 1999Every tornado warning in 1999Tornadoes in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.