Alert archive / North Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 249, NWS Raleigh, NC

August 30, 1998Sampson County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Aug 30, 1998, 9:34 PM EDT for Sampson County, North Carolina. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 30, 1998, 9:34 PM EDT (01:34 UTC)
Expired
Aug 30, 1998, 10:35 PM EDT
In force
61 min
Issued by
NWS Raleigh, NC
Area
Whole counties

County Sampson County, NC

The nearest sounding before it

Newport, NC (KMHX), launched 00:00Z, 1.6 hours before the alert went out and 138 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, Newport, NC at 00:00Z on 1998-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1387 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, Newport, NC at 00:00Z on 1998-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 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
1387 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
948 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
9 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.5

Open this sounding in Storm Lab

The text

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

877 
WUUS1 KRDU 310136 RRA
SVRRDU
NCC163-310235-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
934 PM EDT SUN AUG 30 1998

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL AND NORTHERN SAMPSON COUNTY

* UNTIL 1035 PM EDT

* AT 935 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR SALEMBURG... MOVING NORTHEAST 10 TO 15
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SALEMBURG BY 945 PM
  BONNETTSVILLE BY 950 PM
  CLINTON BY 950 PM
  ROSEBORO BY 945 PM

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS

JWC

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 9:20 PM EDTSevere Thunderstorm WarningRAHCumberland65 min
Aug 30, 10:27 PM EDTSevere Thunderstorm WarningRAHCumberland63 min
Aug 30, 10:47 PM EDTFlash Flood WarningRAHCumberland, Sampson58 min
Aug 31, 1:47 PM EDTSevere Thunderstorm WarningRAHMontgomery33 min
Aug 31, 6:53 PM EDTSevere Thunderstorm WarningRAHWayne32 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1998Every severe thunderstorm warning in 1998

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.