Alert archive / Virginia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 21, NWS Wakefield, VA

June 4, 2007Southampton County, Sussex County, Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Jun 4, 2007, 10:47 PM EDT for Southampton County, Sussex County, Virginia. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 4, 2007, 10:47 PM EDT (02:47 UTC)
Expired
Jun 4, 2007, 11:30 PM EDT
In force
43 min
Issued by
NWS Wakefield, VA
Area
Counties, with a storm outline in the text

Counties Southampton County, VA, Sussex County, VA

The radar

The Norfolk radar (KAKQ), 32 km from the middle of the area, began a volume at 02:49 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 00:00Z, 2.8 hours before the alert went out and 197 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, Roanoke, VA at 00:00Z on 2007-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 118 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, Roanoke, VA at 00:00Z on 2007-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
118 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1673 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KAKQ 050248
SVRAKQ
VAC175-183-050330-
/O.NEW.KAKQ.SV.W.0021.070605T0247Z-070605T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WAKEFIELD VA
1047 PM EDT MON JUN 4 2007

THE NATIONAL WEATHER SERVICE IN WAKEFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL SOUTHAMPTON COUNTY IN SOUTHEAST VIRGINIA...
  SOUTHERN SUSSEX COUNTY IN SOUTHEAST VIRGINIA...

* UNTIL 1130 PM EDT

* AT 1045 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
  STORM WAS LOCATED 6 MILES SOUTH OF JARRATT...OR ABOUT 7 MILES
  NORTHEAST OF EMPORIA...AND MOVING NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SUSSEX BY 1110 PM EDT...
  HOMEVILLE BY 1120 PM EDT...

LAT...LON 3682 7748 3668 7739 3688 7708 3699 7719

$$

JM

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 8:18 PM EDTSevere Thunderstorm WarningAKQAmelia42 min
Jun 4, 9:55 PM EDTSevere Thunderstorm WarningAKQMecklenburg35 min
Jun 5, 12:28 AM EDTSpecial Marine WarningAKQ32 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2007Every severe thunderstorm warning in 2007

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.