Alert archive / North Carolina / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 20, NWS Greenville-Spartanburg, SC

July 1, 1986Montgomery County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 1, 1986, 2:30 PM EDT for Montgomery County, North Carolina. It was in force for 80 min.

The area

The counties it named.

The facts

Issued
Jul 1, 1986, 2:30 PM EDT (18:30 UTC)
Expired
Jul 1, 1986, 3:50 PM EDT
In force
80 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

County Montgomery 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, 6.5 hours before the alert went out and 83 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 1986-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 347 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 1986-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
347 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
666 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 1, 1:49 PM EDT, 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLOTTE NC
145 PM EDT TUE JUL 01 1986

AT 130 PM CHARLOTTE WEATHER RADAR SHOWED VERY HEAVY THUNDER
STORMS HAD FORMED RAPIDLY OVER NORTHERN CABARRUS AND NORTHERN
GASTON COUNTIES OF NORTH CAROLINA.

SHOWERS HAD FORMED OVER CATAWBA AND CLEVELAND COUNTIES ALSO IN
THE TAR HEEL STATE.

THESE SHOWERS AND THUNDERSTORMS WERE MOVING TOWARD THE SOUTHEAST
ABOUT 20 MPH AND MAY BE ACCOMPANIED BY HAIL..LIGHTNING..BRIEF
DOWNPOURS..AND LOCALLY GUSTY WINDS.

BY 230 THIS AFTERNOON..A VERY HEAVY THUNDERSTORM WILL HAVE CROSSED
OVER CONCORD COUNTY IN CABARRUS COUNTY AND OVER GASTONIA IN GASTON
COUNTY.  THE VERY HEAVY THUNDERSTORM IN GASTON COUNTY MAY MOVE
'ACROSS CHARLOTTE AROUND 3 PM.

CLARK

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 1, 5:20 PM EDTSevere Thunderstorm WarningGSPCatawba55 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.