Alert archive / North Carolina / Tornado Warnings in 1993

Tornado Warning 5, NWS Raleigh, NC

June 4, 1993Orange County, North Carolina

NWS Raleigh, NC issued this tornado warning at Jun 4, 1993, 7:25 PM EDT for Orange County, North Carolina. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
Jun 4, 1993, 7:25 PM EDT (23:25 UTC)
Expired
Jun 4, 1993, 8:00 PM EDT
In force
35 min
Issued by
NWS Raleigh, NC
Area
Whole counties

County Orange County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.4 hours before the alert went out and 70 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 1993-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 774 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 1993-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 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
774 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
1204 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRDU 042327
TORRDU
NCC135-050000-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
725 PM EDT FRI JUN 4 1993
 
THE NATIONAL WEATHER SERVICE IN RALEIGH/DURHAM HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  800 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL NORTH CAROLINA
 
   ...ORANGE COUNTY
 
A TORNADO WAS REPORTED AT ORANGE GROVE ROAD OR ABOUT 7 MILES NORTHWEST
OF CHAPEL HILL.
 
THUNDERSTORMS PRODUCING THIS SEVERE WEATHER CONTINUE TO BE MOVING SOUTH
AROUND 50 MPH.
 
PEOPLE NEAR THE PATH OF THIS STORM SHOULD ACT NOW TO PROTECT THEIR
LIVES. GO TO THE LOWEST FLOOR...A SMALL INTERIOR ROOM OR CLOSET.
COVER YOUR HEAD. STAY AWAY FROM WINDOWS.Z GET OUT OF MOBILE HOMES AND
VEHICLES AND INTO A STURDY BUILDING OR A DITCH. REPORT DAMAGE TO
LOCAL EMERGENCY OFFICIALS FOR RELAY TO THE NATIONAL WEATHER SERVICE.
 
LBC
 
&

What forecasters said that day

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

In the hours before

Local storm report, Jun 4, 6:54 PM EDT, 31 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE  GREENSBORO NC
654 PM EDT FRI JUN 4 1993

ATTN SELS...

638 PM EDT..2238 Z DAVIE COUNTY AUTHORITIES REPORTED 3 AND A HALF INCH
            HAIL.

GTR

ORITIES REPORTED SEVERAL TREES
            DOWN.

GTR
Local storm report, Jun 4, 7:10 PM EDT, 15 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE  GREENSBORO NC
710 PM EDT FRI JUN 4 1993

ATTN SELS...

705 PM EDT..2305 Z IRDELL COUNTY AUTHORITIES REPORTED BASEBALL SIZED HAIL.

GTR
Local storm report, Jun 4, 7:11 PM EDT, 14 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE  GREENSBORO NC
710 PM EDT FRI JUN 4 1993

ATTN SELS...

705 PM EDT..2305 Z IRDELL COUNTY AUTHORITIES REPORTED BASEBALL SIZED HAIL.

GTR
Local storm report, Jun 4, 7:13 PM EDT, 12 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
713 PM EDT FRI JUN 04 1993

TIME           EVENT
 712 EDT       TREES DOWN ON GUESS ROAD 4 MILES NORTH OF THE CITY OF
               DURHAM IN NORTHERN DURHAM COUNTY.  REPORTED BY AMATEUR
               RADIO.

RFG
Local storm report, Jun 4, 7:14 PM EDT, 11 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
713 PM EDT FRI JUN 04 1993

TIME           EVENT
 712 EDT       TREES DOWN ON GUESS ROAD 4 MILES NORTH OF THE CITY OF
               DURHAM IN NORTHLERN DURHAM COUNTY.  REPORTED BY AMATEUR
               RADIO.

RFG
Local storm report, Jun 4, 7:25 PM EDT, 0 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
724 PM EDT FRI JUN 04 1993

TIME           EVENT
724 EDT        TORNADO REPORTED ON ORANGE GROVE ROAD IN ORANGE COUNTY
               7 MILES WEST NXORTHWEST OF CHAPEL HILL REPORTED BY PUBLIC
               CITIZEN.

RFG

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 4, 5:50 PM EDTSevere Thunderstorm WarningRAHVance, Warren55 min
Jun 4, 6:22 PM EDTTornado WarningRAHWarren38 min
Jun 4, 6:29 PM EDTSevere Thunderstorm WarningRAHGranville46 min
Jun 4, 6:41 PM EDTSevere Thunderstorm WarningRAHHalifax, Northampton64 min
Jun 4, 6:51 PM EDTTornado WarningRAHPerson54 min
Jun 4, 7:02 PM EDTSevere Thunderstorm WarningRAHDurham, Orange58 min
Jun 4, 7:02 PM EDTSevere Thunderstorm WarningRAHFranklin, Granville, Vance58 min
Jun 4, 7:11 PM EDTTornado WarningRAHHalifax34 min
Jun 4, 7:23 PM EDTSevere Thunderstorm WarningRAHNash, Wake67 min
Jun 4, 7:30 PM EDTTornado WarningRAHChatham, Durham45 min
Jun 4, 7:37 PM EDTTornado WarningRAHWake53 min
Jun 4, 7:40 PM EDTTornado WarningRAHEdgecombe65 min
Jun 4, 7:48 PM EDTTornado WarningRAHFranklin, Nash42 min
Jun 4, 7:50 PM EDTTornado WarningRAHWilson55 min

Nearby

Tornado Warnings in North Carolina, 1993Every tornado warning in 1993Tornadoes in 1993

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.