Alert archive / Virginia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 2, NWS Wakefield, VA

January 18, 1999Amelia County, Nottoway County, Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Jan 18, 1999, 12:22 PM EST for Amelia County, Nottoway County, Virginia. It was in force for 33 min. 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 18, 1999, 12:22 PM EST (17:22 UTC)
Expired
Jan 18, 1999, 12:55 PM EST
In force
33 min
Issued by
NWS Wakefield, VA
Area
Whole counties

Counties Amelia County, VA, Nottoway County, VA

The radar

The Norfolk radar (KAKQ), 94 km from the middle of the area, began a volume at 17:22 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 5.4 hours before the alert went out and 198 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 1999-01-18Temperature 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 1999-01-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 601 square meters per square second.1939587897Sfc1 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
408 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
601 m²/s²
0-3 km storm-relative helicity
602 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
Jan 18, 12:18 PM ESTSevere Thunderstorm WarningAKQLunenburg, Prince Edward32 min
Jan 18, 2:54 PM ESTSevere Thunderstorm WarningAKQKing and Queen, King William, New Kent36 min
Jan 18, 3:13 PM ESTSevere Thunderstorm WarningAKQEssex, Richmond32 min
Jan 18, 3:13 PM ESTSevere Thunderstorm WarningAKQMiddlesex32 min
Jan 18, 3:28 PM ESTSevere Thunderstorm WarningAKQLancaster, Northumberland32 min
Jan 18, 3:53 PM ESTSevere Thunderstorm WarningAKQKing and Queen, King William, New Kent32 min
Jan 18, 4:17 PM ESTSevere Thunderstorm WarningAKQSussex18 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.