Alert archive / North Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 103, NWS Raleigh, NC

May 20, 1998Randolph County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at May 20, 1998, 5:19 PM EDT for Randolph County, North Carolina. It was in force for 16 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 20, 1998, 5:19 PM EDT (21:19 UTC)
Expired: May 20, 1998, 5:35 PM EDT
In force: 16 min
Issued by: NWS Raleigh, NC
Area: Whole counties

County Randolph County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.3 hours before the alert went out and 42 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: 68 J/kg
Mixed-layer CIN: -336 J/kg
Mixed-layer LCL: 1739 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 198 m²/s²
0-3 km storm-relative helicity: 246 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRDU 202119 RRA
SVRRDU
NCC151-202135-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
519 PM EDT WED MAY 20 1998

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN RANDOLPH COUNTY

* UNTIL 535 PM EDT

* AT 417 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM EXTREME SOUTHEAST RANDOLPH COUNTY... MOVING
  SOUTHEAST AT 30 MPH.
B
* THE SEVERE THUNDERSTORM WILL BE NEAR...
  THE CHATHAM COUNTY LINE AT AT NC 22 NEAR 530 PM


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 20, 4:13 PM EDT, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
413 PM EDT WED MAY 20 1998

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

0355 PM    GREENSBORO                NC   1.75 INCH HAIL
05/20/98   GUILFORD                       GUILFORD COUNTY EMS
                                          REPORTED GOLFBALL SIZE
                                          HAIL ON MOUNT HOPE CHURCH
                                          ROAD IN SOUTHEAST GUILFORD
                                          COUNTY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 3:32 PM EDT	Severe Thunderstorm Warning	RAH	Guilford	33 min
May 20, 4:01 PM EDT	Severe Thunderstorm Warning	RAH	Alamance, Guilford	34 min
May 20, 4:16 PM EDT	Severe Thunderstorm Warning	RAH	Chatham	29 min
May 20, 6:06 PM EDT	Severe Thunderstorm Warning	RAH	Randolph	34 min
May 20, 6:11 PM EDT	Severe Thunderstorm Warning	RAH	Moore	34 min
May 20, 6:46 PM EDT	Severe Thunderstorm Warning	RAH	Moore	29 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1998 Every 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.