Alert archive / South Carolina / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 3, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at Feb 19, 1999, 2:22 PM EST for Clarendon County, Orangeburg County, South Carolina. It was in force for 38 min. 3 reports 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
- Feb 19, 1999, 2:22 PM EST (19:22 UTC)
- Expired
- Feb 19, 1999, 3:00 PM EST
- In force
- 38 min
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
Counties Clarendon County, SC, Orangeburg County, SC
The radar
The Columbia radar (KCAE), 72 km from the middle of the area, began a volume at 19:25 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 19, 2:35 PM EST | Hail 0.75 | Elloree, SC | City police reported 3/4 inch hail. |
| Feb 19, 2:42 PM EST | Hail 1 | Summerton, SC | City police reported 1 inch hail. |
| Feb 19, 2:54 PM EST | Hail 1.75 | Manning, SC | Fire dept reported golf ball size hail. |
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
Charleston AFB, SC (KCHS), launched 12:00Z, 7.4 hours before the alert went out and 87 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
- 18 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 657 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 216 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KCAE 191927 RRA SVRCAE SCC027-075-192000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE COLUMBIA SC 222 PM EST FRI FEB 19 1999 THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN CLARENDON COUNTY IN SOUTH CAROLINA EASTERN ORANGEBURG COUNTY IN SOUTH CAROLINA * UNTIL 300 PM EST * AT 220 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS APPROACHING SOUTHWEST CLARENDON AND EASTERN ORANGEBUG COUNTIES. THE STORMS WERE MOVING EAST AT 35 MPH AND HAVE PRODUCED LARGE HAIL. * THE SEVERE THUNDERSTORM WILL BE NEAR... ELLORREE AT 235 SANTEE AT 240 SUMMERTON AT 240 EUTAWVILLE AT 245 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.
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, Feb 19, 10:50 AM EST, 3 hours 32 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
1050 AM EST FRI FEB 19 1999
TIME (EST) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
1020 AM W AIKEN COUNTY SC 1.75 INCH HAIL
02/19/99 AIKEN SHERIFF REPORTED GOLF
BALL SIZE HAIL
MOORELocal storm report, Feb 19, 12:42 PM EST, 1 hour 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
042 PM EST FRI FEB 19 1999
TIME (EST) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
1230 PM SANDY RUN SC OTHER
02/19/99 CALHOUN OBSERVER IN SANDY RUN
REPORTED PEA-SIZED HAIL
COVERING THE GROUND UP TO
1 INCH DEPTH VICINITY HWY
21.
MOORELocal storm report, Feb 19, 1:16 PM EST, 1 hour 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
116 PM EST FRI FEB 19 1999
TIME (EST) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
113 PM 23 NW ORANGEBURG SC 1.75 INCH HAIL
02/19/99 ORANGEBURG GOLF BALL SIZE HAIL
REPORTED NEAR THE TOWN OF
NORTH--REPORT BY LOCAL
FIRE DEPARTMENT
BCLocal storm report, Feb 19, 1:52 PM EST, 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
152 PM EST FRI FEB 19 1999
TIME (EST) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
154 PM ST. MATTHEWS SC .88 INCH HAIL
02/19/99 CALHOUN CALHOUN COUNTY SHERIFF
REPORTED NICKEL-SIZED
HAIL.
MOOREThe office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 10:13 AM EST | Severe Thunderstorm Warning | CAE | Aiken | 47 min |
| Feb 19, 12:56 PM EST | Tornado Warning | CAE | Orangeburg | 19 min |
| Feb 19, 1:35 PM EST | Tornado Warning | CAE | Calhoun | 40 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 1999Every severe thunderstorm warning in 1999
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; radar from the NEXRAD Level II archive.