Alert archive / Virginia / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 35, NWS Baltimore/Washington

June 30, 1990Culpeper County, Madison County, Rappahannock County, Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 30, 1990, 6:07 PM EDT for Culpeper County, Madison County, Rappahannock County, Virginia. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Jun 30, 1990, 6:07 PM EDT (22:07 UTC)
Expired
Jun 30, 1990, 7:15 PM EDT
In force
68 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

Counties Culpeper County, VA, Madison County, VA, Rappahannock County, VA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 10.1 hours before the alert went out and 79 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 1990-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 73 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, Washington/Dulle, VA at 12:00Z on 1990-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 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
73 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
1112 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
39 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.

Nearby

Severe Thunderstorm Warnings in Virginia, 1990Every severe thunderstorm warning in 1990

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.