Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 59, NWS Blacksburg, VA

August 29, 1990Forsyth County, Guilford County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 29, 1990, 2:09 PM EDT for Forsyth County, Guilford County, North Carolina. It was in force for 66 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 29, 1990, 2:09 PM EDT (18:09 UTC)
Expired: Aug 29, 1990, 3:15 PM EDT
In force: 66 min
Issued by: NWS Blacksburg, VA
Area: Whole counties

Counties Forsyth County, NC, Guilford County, NC

The radar

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

What was reported inside it

Time	Report	Where	Remark
Aug 29, 3:00 PM EDT	Thunderstorm Wind 0	Guilford, NC

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.2 hours before the alert went out and 11 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 436 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 1776 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KGSO 291809
SVRGSO
NCC067-081-291915-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE GREENSBORO NC
209 PM EDT WED AUG 29 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 315 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE STATE OF NORTH CAROLINA
      EASTERN FORSYTH...WESTERN GUILFORD

AT 205 PM EDT RADAR SHOWED A SEVERE THUNDERSTORM OVER THE BELEW
CREEK AREA AND JUST NORTH OF THE CITY OF WINSTON SALEM IN FORSYTH
COUNTY. MOVEMENT SOUTHEAST AT 30 MPH.

IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WINDS..LARGE HAIL..VERY HEAVY
DOWNPOURS AND FREQUENT DEADLY LIGHTNING.

IF THREATENING WEATHER APPROACHES..GO TO A SAFE PLACE IMMEDIATELY
AND TAKE SHELTER.  ASK YOUR LOCAL SHERIFF OR POLICE TO RELAY YOUR
SEVERE WEATHER REPORT TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.

 GR

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 2:51 PM EDT	Severe Thunderstorm Warning	RNK	Alamance, Guilford	54 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1990 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.