Alert archive / North Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 77, NWS Raleigh, NC

May 8, 1998Alamance County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at May 8, 1998, 10:59 AM EDT for Alamance County, North Carolina. It was in force for 31 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
May 8, 1998, 10:59 AM EDT (14:59 UTC)
Expired
May 8, 1998, 11:30 AM EDT
In force
31 min
Issued by
NWS Raleigh, NC
Area
Whole counties

County Alamance County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 3.0 hours before the alert went out and 45 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 1998-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 836 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 1998-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.1939587897Sfc1 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
836 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
503 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

152 
WUUS1 KRDU 081500 RRA
SVRRDU
NCC001-081530-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
1059 AM EDT FRI MAY 8 1998

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN ALAMANCE COUNTY

* UNTIL 1130 AM EDT

* AT 11 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM IN THE VICINITY OF ELON COLLEGE... MOVING EAST
  AT 30 MILES AN HOUR.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BURLINGTON
  MORGANTOWN
  MEBANE

THIS STORM HAS A HISTORY OF HAIL. DAMAGING GUSTY WINDS ARE ALSO
POSSIBLE.

RLH

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.

In the hours before

Local storm report, May 8, 10:33 AM EDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
1033 AM EDT FRI MAY 08 1998

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

1000 AM    BELEWS CREEK              NC   .75 INCH HAIL
05/08/98   FORSYTH                        NORTHWEST FORSYTH COUNTY

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 8:03 PM EDTTornado WarningRAHAlamance, Guilford32 min
May 7, 8:03 PM EDTTornado WarningRAHChatham32 min
May 7, 9:01 PM EDTSevere Thunderstorm WarningRAHMontgomery, Stanly34 min
May 7, 9:04 PM EDTSevere Thunderstorm WarningRAHChatham, Wake31 min
May 7, 9:13 PM EDTSevere Thunderstorm WarningRAHPerson32 min
May 7, 9:34 PM EDTSevere Thunderstorm WarningRAHHarnett, Johnston, Wake31 min
May 8, 9:33 AM EDTSevere Thunderstorm WarningRAHForsyth32 min
May 8, 11:53 AM EDTSevere Thunderstorm WarningRAHVance32 min
May 8, 12:09 PM EDTSevere Thunderstorm WarningRAHGranville, Vance31 min
May 8, 12:27 PM EDTSevere Thunderstorm WarningRAHWarren33 min
May 8, 12:52 PM EDTSevere Thunderstorm WarningRAHWarren33 min
May 8, 12:55 PM EDTSevere Thunderstorm WarningRAHHalifax50 min
May 8, 1:44 PM EDTSevere Thunderstorm WarningRAHEdgecombe, Halifax46 min
May 8, 3:22 PM EDTSevere Thunderstorm WarningRAHWayne48 min
May 8, 3:33 PM EDTSevere Thunderstorm WarningRAHWilson32 min
May 8, 3:42 PM EDTSevere Thunderstorm WarningRAHSampson33 min
May 8, 3:45 PM EDTSevere Thunderstorm WarningRAHPerson50 min
May 8, 4:20 PM EDTSevere Thunderstorm WarningRAHWilson50 min
May 8, 4:24 PM EDTSevere Thunderstorm WarningRAHGranville51 min
May 8, 4:32 PM EDTSevere Thunderstorm WarningRAHWake33 min
May 8, 4:55 PM EDTSevere Thunderstorm WarningRAHFranklin35 min
May 8, 5:33 PM EDTSevere Thunderstorm WarningRAHCumberland32 min
May 8, 5:53 PM EDTSevere Thunderstorm WarningRAHJohnston32 min
May 8, 6:04 PM EDTSevere Thunderstorm WarningRAHCumberland31 min
May 8, 6:16 PM EDTSevere Thunderstorm WarningRAHHarnett29 min
May 8, 6:31 PM EDTSevere Thunderstorm WarningRAHWayne29 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.