Alert archive / North Carolina / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 56, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at May 1, 1998, 7:22 PM EDT for Guilford 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 counties it named.
The facts
- Issued
- May 1, 1998, 7:22 PM EDT (23:22 UTC)
- Expired
- May 1, 1998, 7:55 PM EDT
- In force
- 33 min
- Issued by
- NWS Raleigh, NC
- Area
- Whole counties
County Guilford County, NC
The radar
The Roanoke radar (KFCX), 114 km from the middle of the area, began a volume at 23:22 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.4 hours before the alert went out and 10 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.
- Mixed-layer CAPE
- 7 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 499 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
702 WUUS1 KRDU 012324 RRA SVRRDU NCC081-012355- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RALEIGH NC 722 PM EDT FRI MAY 1 1998 THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... GUILFORD COUNTY * UNTIL 755 PM EDT * AT 720 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR FRIENDSHIP IN WESTERN GUILFORD COUNTY... MOVING NORTHEAST NEAR 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... NEAR SUMMERFIELD AND HIGHWAY 220 BY 740 PM DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS GH
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
Special weather statement, May 1, 6:03 PM EDT, 1 hour 19 minutes before
NCZ007>011-021>028-038>043-073>078-083>086-088>089-021200- SEVERE WEATHER OUTLOOK FOR CENTRAL NORTH CAROLINA NATIONAL WEATHER SERVICE RALEIGH NC 603 PM EDT FRI MAY 1 1998 ...SLIGHT RISK OF SEVERE THUNDERSTORMS OVER CENTRAL NORTH CAROLINA FOR TONIGHT... (THE SEVERE WEATHER OUTLOOK FOR CENTRAL NORTH CAROLINA APPLIES ONLY TO THE COUNTIES LISTED AT THE END OF TEXT.) THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS OVERNIGHT. THE MAIN THREAT FROM SEVERE STORMS WILL BE LARGE HAIL AND SUDDEN STRONG DOWNBURST WINDS. THE COMBINATION OF A COLD FRONT OVER WEST-CENTRAL NORTH CAROLINA AND A WARM FRONT EAST-WEST ACROSS THE NORTHERN TIER OF THE STATE WILL PROVIDE THE FOCUS FOR THUNDERSTORM DEVELOPMENT OVER NIGHT. ADDITIONALLY...WARM MOIST UNSTABLE AIR ALONG AND SOUTH OF THESE BOUNDARIES WILL AID IN THUNDERSTORM DEVELOPMENT...SOME POSSIBLY REACHING SEVERE LIMITS. SPOTTER ACTIVATION IS CURRENTLY IN STANDBY MODE. PLEASE RELAY ANY REPORTS YOU RECEIVE. STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS OR POSSIBLE WATCHES AND WARNINGS. RA ********************************************************************* ALAMANCE ANSON CHATHAM CUMBERLAND DAVIDSON DURHAM EDGECOMBE FORSYTH FRANKLIN GRANVILLE GUILFORD HALIFAX HARNETT HOKE JOHNSTON LEE MONTGOMERY MOORE NASH ORANGE PERSON RANDOLPH RICHMOND SAMPSON SCOTLAND STANLY VANCE WAKE WARREN WAYNE WILSON
Special weather statement, May 1, 6:03 PM EDT, 1 hour 19 minutes before
NCZ007>011-021>028-038>043-073>078-083>086-088>089-021200- SEVERE WEATHER OUTLOOK FOR CENTRAL NORTH CAROLINA NATIONAL WEATHER SERVICE RALEIGH NC 603 PM EDT FRI MAY 1 1998 ...SLIGHT RISK OF SEVERE THUNDERSTORMS OVER CENTRAL NORTH CAROLINA FOR TONIGHT... (THE SEVERE WEATHER OUTLOOK FOR CENTRAL NORTH CAROLINA APPLIES ONLY TO THE COUNTIES LISTED AT THE END OF TEXT.) THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS OVERNIGHT. THE MAIN THREAT FROM SEVERE STORMS WILL BE LARGE HAIL AND SUDDEN STRONG DOWNBURST WINDS. THE COMBINATION OF A COLD FRONT OVER WEST-CENTRAL NORTH CAROLINA AND A WARM FRONT EAST-WEST ACROSS THE NORTHERN TIER OF THE STATE WILL PROVIDE THE FOCUS FOR THUNDERSTORM DEVELOPMENT OVER NIGHT. ADDITIONALLY...WARM MOIST UNSTABLE AIR ALONG AND SOUTH OF THESE BOUNDARIES WILL AID IN THUNDERSTORM DEVELOPMENT...SOME POSSIBLY REACHING SEVERE LIMITS. SPOTTER ACTIVATION IS CURRENTLY IN STANDBY MODE. PLEASE RELAY ANY REPORTS YOU RECEIVE. STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS OR POSSIBLE WATCHES AND WARNINGS. RA ********************************************************************* ALAMANCE ANSON CHATHAM CUMBERLAND DAVIDSON DURHAM EDGECOMBE FORSYTH FRANKLIN GRANVILLE GUILFORD HALIFAX HARNETT HOKE JOHNSTON LEE MONTGOMERY MOORE NASH ORANGE PERSON RANDOLPH RICHMOND SAMPSON SCOTLAND STANLY VANCE WAKE WARREN WAYNE WILSON
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 6:34 PM EDT | Severe Thunderstorm Warning | RAH | Davidson | 46 min |
| May 1, 6:37 PM EDT | Severe Thunderstorm Warning | RAH | Guilford | 33 min |
| May 1, 7:05 PM EDT | Severe Thunderstorm Warning | RAH | Alamance | 35 min |
| May 1, 7:51 PM EDT | Severe Thunderstorm Warning | RAH | Person | 29 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; radar from the NEXRAD Level II archive.