Alert archive / North Carolina / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 20, NWS Blacksburg, VA

August 11, 1986Davidson County, Rowan County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 11, 1986, 4:27 PM EDT for Davidson County, Rowan County, North Carolina. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Aug 11, 1986, 4:27 PM EDT (20:27 UTC)
Expired
Aug 11, 1986, 5:30 PM EDT
In force
63 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

Counties Davidson County, NC, Rowan County, NC

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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.5 hours before the alert went out and 58 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 1986-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 688 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 1986-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.193958Sfc1 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
688 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
762 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.1

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 Blacksburg, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 11, 2:52 PM EDTSevere Thunderstorm WarningRNKAlamance68 min
Aug 11, 5:38 PM EDTSevere Thunderstorm WarningRNKAlamance67 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1986Every severe thunderstorm warning in 1986

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.