Alert archive / North Carolina / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 58, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at May 1, 1998, 8:15 PM EDT for Halifax County, North Carolina. It was in force for 50 min. 1 report 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
- May 1, 1998, 8:15 PM EDT (00:15 UTC)
- Expired
- May 1, 1998, 9:05 PM EDT
- In force
- 50 min
- Issued by
- NWS Raleigh, NC
- Area
- Whole counties
County Halifax County, NC
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 1, 8:20 PM EDT | Hail 0.75 | Enfield, 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
Newport, NC (KMHX), launched 00:00Z, 0.3 hours before the alert went out and 179 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
- 686 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 745 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, 2 hours 12 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, 2 hours 12 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
Local storm report, May 1, 7:35 PM EDT, 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
735 PM EDT FRI MAY 01 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 PM LEXINGTON NC .75 INCH HAIL
05/01/98 DAVIDSON SKYWARN OBSERVER REPORTED
DIME SIZE HAIL 5 MILES
SOUTH OF LEXINGTONLocal storm report, May 1, 7:42 PM EDT, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
742 PM EDT FRI MAY 01 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0648 PM MONTICELLO NC .75 INCH HAIL
05/01/98 GUILFORD GUILFORD COUNTY SHERIFF
DEPARTMENT REPORTED DIME
SIZE HAIL NEAR MONTICELLO
IN EXTREME NORTHWEST
GUILFORD COUNTY.Local storm report, May 1, 7:49 PM EDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
749 PM EDT FRI MAY 01 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0707 PM ALTAMAHAW NC 1.75 INCH HAIL
05/01/98 ALAMANCE ALAMANCE COUNTY SHERIFF
REPORTED GOLFBALL SIZE
HAIL JUST NORTH OF
ALTAMAHAW IN NORTHWEST
ALAMANCE COUNTY.Local storm report, May 1, 8:13 PM EDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
813 PM EDT FRI MAY 01 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0713 PM UNION RIDGE NC 1.75 INCH HAIL
05/01/98 ALAMANCE SKY WARN OBSERVER REPORTED
GOLFBALL SIZE HAIL IN
UNION RIDGE IN ALAMANCE
COUNTY.The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 8:24 PM EDT | Severe Thunderstorm Warning | RAH | Franklin | 51 min |
| May 1, 8:55 PM EDT | Severe Thunderstorm Warning | RAH | Granville | 45 min |
| May 1, 9:23 PM EDT | Severe Thunderstorm Warning | RAH | Warren | 32 min |
| May 1, 9:45 PM EDT | Severe Thunderstorm Warning | RAH | Vance | 35 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.