Alert archive / North Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 179, NWS Raleigh, NC

August 13, 2000Johnston County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Aug 13, 2000, 3:12 PM EDT for Johnston County, North Carolina. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Aug 13, 2000, 3:12 PM EDT (19:12 UTC)
Expired: Aug 13, 2000, 3:45 PM EDT
In force: 33 min
Issued by: NWS Raleigh, NC
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Johnston County, NC

The nearest sounding before it

Newport, NC (KMHX), launched 12:00Z, 7.2 hours before the alert went out and 164 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: 93 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 1324 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -47 m²/s²
0-3 km storm-relative helicity: -21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KRAH 131916 COR
SVRRDU
NCC101-131945-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION TO WORDING
NATIONAL WEATHER SERVICE RALEIGH NC
312 PM EDT SUN AUG 13 2000

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JOHNSTON COUNTY IN NORTH CAROLINA

* UNTIL 345 PM EDT

* AT 312 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED 5 MILES EAST OF 
CLAYTON...OR ABOUT 7 MILES  SOUTHWEST OF LINWOOD...MOVING SOUTHEAST 
AT 25 MPH.

* THESE SEVERE THUNDERSTORMS WILL BE NEAR...
   SMITHFIELD BEFORE 330 PM EDT

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  CLAYTON
  LINWOOD
  SMITHFIELD

HAIL UP TO AROUND ONE INCH IN DIAMETER IS EXPECTED FROM THIS STORM. 
IF YOU ARE IN THE STORMS PATH...SEEK SHELTER INDOORS.

LAT...LON 3578 7830 3563 7849 3553 7869 3540 7834
          3557 7809

RFG

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.

NWS Raleigh, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 13, 3:05 PM EDT, 7 minutes earlier.

Area forecast discussion, Aug 13, 3:05 PM EDT, 7 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RALEIGH NC
305 PM EDT SUN AUG 13 2000

WILL GENERALLY FOLLOW TREND OF ETA MODEL AS IT HAS BEEN MOST
CONSISTENT PAST FEW RUNS IN DEPICTING SLIGHTLY SLOWER NE MOVEMENT TO
THE NORTHEAST OF UPPER LOW COMPARED TO AVN/NGM. PLUS AVN/NGM HAVE
BEGUN TO TREND TOWARD ETA SOLUTION. PLAN TO GO A LITTLE SLOWER THAN
ETA THROUGH 00Z TUE AS CURRENT ETA MOVING UPPER LOW A LITTLE TOO
FAST SE ACCORDING TO CURRENT DATA/SATELLITE OBS.

CYCLONIC CIRCULATION WILL KEEP PERIODS OF CLOUDS/SCT SHOWERS-TSTMS
OVER NE COUNTIES OF CWA THROUGH MON AFTERNOON. AS LOW SHIFTS
E-NE...EXPECT MORE OF A DOWNSLOPE COMPONENT TO LOW LEVEL WINDS OVER
NW PIEDMONT AND SRN PIEDMONT MON...THUS EXPECT PARTLY CLOUDY/MOSTLY
SUNNY SKIES OVER THIS AREA MON.

MID/UPPER LEVEL RIDGING MON NIGHT/TUE SUPPORTS IMPROVING SKY
CONDITIONS OVER NE SECTOR OF CWA. EXPECT TEMPS TO RETURN TO SEASONAL
NORMS TUE.

AS FOR EXTENDED...TAIL END OF S/W CROSSING NEW ENGLAND WED WILL
BRING THREAT OF SHOWERS/STORMS TO CENTRAL NC...MAINLY
AFTERNOON/EARLY EVENING. RIDGING BEHIND SYSTEM SHOULD RESULT IN
WARM/DRY CONDITIONS. MRF ALONG IN DEPICTING SURFACE LOW DEVELOPMENT
OFF SC COAST BY 12Z FRI. HOWEVER MRF HAS BEEN VERY INCONSISTENT PAST
FEW RUNS SO CONFIDENCE IN THIS FEATURE DEVELOPING RATHER LOW.

RDU 59/80/60/89 43-0                     GSO 58/82/61/89 2-00
                     FAY 62/83/62/89 22-0r

.RAH...NONE.
WSS

In the hours before

Local storm report, Aug 13, 2:49 PM EDT, 23 minutes before

ZCZC RDULSRRDU ALL
TTAA00 KRDU DDHHMM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
249 PM EDT SUN AUG 13 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0214 PM    YOUNGSVILLE               NC   .88 INCH HAIL
08/13/00   FRANKLIN                       SPOTTER REPORTED NICKEL
                                          SIZE HAIL NEAR YOUNGSVILLE

N

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 1:06 PM EDT	Severe Thunderstorm Warning	RAH	Nash	24 min
Aug 13, 1:28 PM EDT	Severe Thunderstorm Warning	RAH	Durham	32 min
Aug 13, 2:11 PM EDT	Severe Thunderstorm Warning	RAH	Franklin	34 min
Aug 13, 2:17 PM EDT	Severe Thunderstorm Warning	RAH	Chatham	33 min
Aug 13, 2:49 PM EDT	Severe Thunderstorm Warning	RAH	Wake	31 min
Aug 13, 3:23 PM EDT	Severe Thunderstorm Warning	RAH	Nash	32 min
Aug 13, 3:27 PM EDT	Severe Thunderstorm Warning	RAH	Chatham, Moore	33 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2000 Every severe thunderstorm warning in 2000

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.