Alert archive / North Carolina / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 110, NWS Raleigh, NC

August 5, 1997Johnston County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Aug 5, 1997, 5:04 PM EDT for Johnston County, North Carolina. It was in force for 41 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 5, 1997, 5:04 PM EDT (21:04 UTC)
Expired: Aug 5, 1997, 5:45 PM EDT
In force: 41 min
Issued by: NWS Raleigh, NC
Area: Whole counties

County Johnston County, NC

What was reported inside it

Time	Report	Where	Remark
Aug 5, 5:15 PM EDT	Hail 2.75	Benson, NC
Aug 5, 5:15 PM EDT	Thunderstorm Wind 50	Benson, NC

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.1 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-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: 492 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 1174 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRDU 052104 RRA
SVRRDU
NCC101-052145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
504 PM EDT TUE AUG 5 1997
 
THE NATIONAL WEATHER SERVICE IN RALEIGH/DURHAM HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL NORTH CAROLINA
 
   ...JOHNSTON COUNTY
 
NATIONAL WEATHER SERVICE RADAR INDICATES A SEVERE THUNDERSTORM IN
EXTREME WESTERN JOHNSTON COUNTY IN THE VICINITY OF NC 210. THIS STORM IS
MOVING TO THE EAST SOUTHEAST AT 25 MILES AN HOUR. RADAR INDICATES THIS
STORM IS PRODUCING LARGE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MILES
AN HOUR. IF YOU ARE IN THE PATH OF THIS STORM...TAKE COVER IMMEDIATELY.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 4:44 PM EDT	Severe Thunderstorm Warning	RAH	Warren	31 min
Aug 5, 4:58 PM EDT	Severe Thunderstorm Warning	RAH	Halifax	32 min
Aug 5, 5:28 PM EDT	Tornado Warning	RAH	Johnston	17 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1997 Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.