Alert archive / Virginia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 113, NWS Wakefield, VA

July 7, 1999Nottoway County, Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Jul 7, 1999, 3:56 PM EDT for Nottoway County, Virginia. It was in force for 19 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
Jul 7, 1999, 3:56 PM EDT (19:56 UTC)
Expired
Jul 7, 1999, 4:15 PM EDT
In force
19 min
Issued by
NWS Wakefield, VA
Area
Whole counties

County Nottoway County, VA

What was reported inside it

TimeReportWhereRemark
Jul 7, 4:05 PM EDTThunderstorm WindCrewe, VATrees 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.9 hours before the alert went out and 203 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, Greensboro/Hi Pt, NC at 12:00Z on 1999-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 683 joules per kilogram.LCLLFCEL10008507005003002001001 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, Greensboro/Hi Pt, NC at 12:00Z on 1999-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939Sfc1 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
683 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
1339 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
8 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

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
Jul 7, 3:47 PM EDTSevere Thunderstorm WarningAKQLouisa33 min
Jul 7, 4:07 PM EDTSevere Thunderstorm WarningAKQAmelia33 min
Jul 7, 4:38 PM EDTSevere Thunderstorm WarningAKQPowhatan37 min
Jul 7, 4:42 PM EDTSevere Thunderstorm WarningAKQMecklenburg33 min
Jul 7, 4:51 PM EDTSevere Thunderstorm WarningAKQAmelia, Chesterfield39 min
Jul 7, 5:15 PM EDTSevere Thunderstorm WarningAKQMecklenburg30 min
Jul 7, 5:36 PM EDTSevere Thunderstorm WarningAKQBrunswick39 min
Jul 7, 5:42 PM EDTSevere Thunderstorm WarningAKQCity of Suffolk48 min
Jul 7, 6:12 PM EDTSevere Thunderstorm WarningAKQGreensville, City of Emporia33 min
Jul 7, 6:17 PM EDTSevere Thunderstorm WarningAKQPrince George33 min
Jul 7, 6:24 PM EDTSevere Thunderstorm WarningAKQSussex31 min
Jul 7, 6:44 PM EDTSevere Thunderstorm WarningAKQSouthampton, City of Franklin51 min

Nearby

Severe Thunderstorm Warnings in Virginia, 1999Every severe thunderstorm warning 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.