Alert archive / North Carolina / Tornado Warnings in 1990

Tornado Warning 4, NWS Raleigh, NC

July 27, 1990Johnston County, North Carolina

NWS Raleigh, NC issued this tornado warning at Jul 27, 1990, 7:47 PM EDT for Johnston County, North Carolina. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Jul 27, 1990, 7:47 PM EDT (23:47 UTC)
Expired
Jul 27, 1990, 8:15 PM EDT
In force
28 min
Issued by
NWS Raleigh, NC
Area
Whole counties

County Johnston 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, 11.8 hours before the alert went out and 152 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 1990-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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 1990-07-27The 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
3 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
1128 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-53 m²/s²
0-3 km storm-relative helicity
21 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 KRDU 272348
TORRDU
NCC101-280015-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
747 PM EDT FRI JUL 27 1990
 
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  815 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL NORTH CAROLINA
 
   ...EASTERN JOHNSTON COUNTY
 
STRONG THUNDERSTORMS ARE MOVING INTO JOHNSTON COUNTY FROM THE EAST
NORTHEAST AT 15 TO 20 MPH. AT 735...REPORTS FROM THE PUBLIC ALONG
INTERSTATE 95 NEAR KENLY INDICATED FUNNEL CLOUDS BEING SIGHTED WITH
THESE STORMS. WEATHER RADAR INDICATES THAT THESE THUNDERSTORMS ARE
MOVING WEST SOUTHWEST AT 15 TO 20 MPH.
 
 
 
TORNADOES IN THE SOUTH ARE HARD TO SEE BE!CAUSE OF RAIN...LOW
CLOUDS...AND TREES. TAKE COVER NOW...DO NOT TRY TO WAIT ON THE
STORM AND DO NOT TRY TO OUTRUN IT.

Nearby

Tornado Warnings in North Carolina, 1990Every tornado warning in 1990Tornadoes 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.