Alert archive / North Carolina / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 13, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Mar 20, 1998, 6:28 PM EST for Alamance County, North Carolina. It was in force for 32 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
- Mar 20, 1998, 6:28 PM EST (23:28 UTC)
- Expired
- Mar 20, 1998, 7:00 PM EST
- In force
- 32 min
- Issued by
- NWS Raleigh, NC
- Area
- Whole counties
County Alamance County, NC
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 20, 6:30 PM EST | Hail 1.75 | Snow Camp, NC | Golfball size hail occurred at Snow Camp in southern Alamance county as reported by a fireman. |
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 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, 11.5 hours before the alert went out and 129 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.
822 WUUS1 KRDU 202329 RRA SVRRDU NCC001-210000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RALEIGH NC 628 PM EST FRI MAR 20 1998 THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR ALAMANCE COUNTY * UNTIL 700 PM EST * THIS STORM WILL AFFECT: SNOW CAMP...BURLINGTON AND MEBANE * BASIS FOR WARNING: AT 625 PM...A SEVERE THUNDERSTORM NEAR SNOW CAMP WAS MOVING NORTHEAST AT 30 MPH. ALTHOUGH NO TORNADOES HAVE BEEN DETECTED WITH THIS STORM, A TORNADO WATCH REMAINS IN EFFECT. DELGADO
The 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, 4:20 PM EST | Severe Thunderstorm Warning | RAH | Guilford | 35 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, 6:44 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.