Alert archive / North Carolina / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 8, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Mar 20, 1998, 4:20 PM EST for Guilford County, North Carolina. It was in force for 35 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
- Mar 20, 1998, 4:20 PM EST (21:20 UTC)
- Expired
- Mar 20, 1998, 4:55 PM EST
- In force
- 35 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 21:23 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 20, 1:00 PM EST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Roanoke, VA (KRNK), launched 12:00Z, 9.3 hours before the alert went out and 127 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 595 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 179 m²/s²
- 0-3 km storm-relative helicity
- 234 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
021 WUUS1 KRDU 202121 RRA SVRRDU NCC081-202155- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RALEIGH NC 420 PM EST FRI MAR 20 1998 THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GUILFORD COUNTY * UNTIL 455 PM EST * THIS STORM WILL AFFECT: CLIMAX...PLEASANT GARDERN...WHITSETT...SEDALIA * BASIS FOR WARNING: A SEVERE THUNDERSTORM IN NORTHERN RANDOLPH COUNTY WILL MOVE THROUGH THE SOUTHEASTERN CORNER OF GUILFORD COUNTY. THIS STORM HAS A HISTORY OF PRODUCING HAIL UP TO 1 INCH. ALTHOUGH NO TORNADOES HAVE BEEN DETECTED WITH THIS STORM, A TORNADO WATCH REMAINS IN EFFECT. DELGADO
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, Mar 20, 3:05 PM EST, 1 hour 15 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
305 PM EST FRI MAR 20 1998
TIME (EST) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
238 PM PFAFFTOWN NC 1.00 INCH HAIL
03/20/98 FORSYTH REPORTED BY SKYWARN SPOTTER
MFLocal storm report, Mar 20, 3:05 PM EST, 1 hour 15 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM, NC
305 PM EST FRI MAR 20 1998
TIME (EST) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
238 PM PFAFFTOWN NC 1.00 INCH HAIL
03/20/98 FORSYTH REPORTED BY SKYWARN SPOTTER
MFLocal storm report, Mar 20, 3:08 PM EST, 1 hour 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
308 PM EST FRI MAR 20 1998
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0237 PM LEWISVILLE NC .5 INCH HAIL
03/20/98 FORSYTH REPORTED BY EMERGENCY
OFFICIALSLocal storm report, Mar 20, 3:30 PM EST, 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
330 PM EST FRI MAR 20 1998
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0238 PM PFAFFTOWN NC 1 INCH HAIL
03/20/98 FORSYTH REPORTED BY SKYWARN
SPOTTER
0320 PM WINSTON SALEM NC 1 INCH HAIL
03/20/98 FORSYTH QUARTER INCH HAIL REPORTED
BY SHERIFFS DEPARTMENTLocal storm report, Mar 20, 4:18 PM EST, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
418 PM EST FRI MAR 20 1998
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0412 PM SOPHIA NC .75 INCH HAIL
03/20/98 RANDOLPH THREE QUARTER INCH HAIL
REPORTED IN SOPHIA...PER
RANDOLPH COUNTY SHERIFFThe office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 2:35 PM EST | Severe Thunderstorm Warning | RAH | Forsyth | 30 min |
| Mar 20, 3:17 PM EST | Severe Thunderstorm Warning | RAH | Forsyth | 33 min |
| Mar 20, 3:36 PM EST | Severe Thunderstorm Warning | RAH | Davidson | 34 min |
| Mar 20, 3:54 PM EST | Severe Thunderstorm Warning | RAH | Randolph | 31 min |
| Mar 20, 4:15 PM EST | Tornado Warning | RAH | Person | 30 min |
| Mar 20, 4:41 PM EST | Severe Thunderstorm Warning | RAH | Alamance | 34 min |
| Mar 20, 5:27 PM EST | Tornado Warning | RAH | Person | 33 min |
| Mar 20, 5:33 PM EST | Severe Thunderstorm Warning | RAH | Randolph | 32 min |
| Mar 20, 5:58 PM EST | Severe Thunderstorm Warning | RAH | Durham, Orange | 32 min |
| Mar 20, 6:00 PM EST | Severe Thunderstorm Warning | RAH | Wake | 35 min |
| Mar 20, 6:26 PM EST | Tornado Warning | RAH | Chatham, Wake | 34 min |
| Mar 20, 6:28 PM EST | Severe Thunderstorm Warning | RAH | Alamance | 32 min |
| Mar 20, 6:44 PM EST | Severe Thunderstorm Warning | RAH | Granville | 31 min |
| Mar 20, 6:50 PM EST | Tornado Warning | RAH | Granville | 35 min |
| Mar 20, 6:56 PM EST | Severe Thunderstorm Warning | RAH | Orange | 29 min |
| Mar 20, 6:56 PM EST | Severe Thunderstorm Warning | RAH | Franklin | 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.