Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 60, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at May 4, 1998, 1:17 PM EDT for Sumter County, South Carolina. It was in force for 58 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 4, 1998, 1:17 PM EDT (17:17 UTC)
- Expired
- May 4, 1998, 2:15 PM EDT
- In force
- 58 min
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
County Sumter County, SC
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 4, 1:35 PM EDT | Hail 1.75 | Sumter, SC | A severe storm tracked across Sumter county with SKYWARN spotters reporting dime to golfball size hail along its path. |
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 |
|---|---|---|---|
| May 4, 12:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 5.3 hours before the alert went out and 118 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
- 1443 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
406 WUUS1 KCAE 041718 RRA SVRCAE SCC085-041815- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE COLUMBIA SC 117 PM EDT MON MAY 4 1998 THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SUMTER COUNTY IN SOUTH CAROLINA * UNTIL 215 PM EDT * AT 115 WEATHER SERVICE RADAR SHOWED A SEVERE THUNDERSTORM OVER SOUTHWEST SUMTER COUNTY. THIS STORM WAS MOVING NORTHEAST AT 45 MPH AND WILL PRODUCE DAMAGING WINDS AND LARGE HAIL. * THE SEVERE THUNDERSTORM WILL BE NEAR... PINEWOOD AT 130 PM SUMTER AT 145 PM IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. AMATEUR RADIO AND OTHER SPOTTERS ARE REQUESTED TO MONITOR THIS STORM AND RELAY REPORTS PROMPTLY TO THE NEAREST NATIONAL WEATHER SERVICE OFFICE.
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 8:59 PM EDT | Severe Thunderstorm Warning | CAE | Barnwell | 46 min |
| May 4, 1:34 PM EDT | Severe Thunderstorm Warning | CAE | Bamberg | 41 min |
| May 4, 1:46 PM EDT | Severe Thunderstorm Warning | CAE | Orangeburg | 44 min |
| May 4, 2:08 PM EDT | Severe Thunderstorm Warning | CAE | Clarendon | 67 min |
Nearby
Severe Thunderstorm Warnings in South 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.