Alert archive / South Carolina / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 53, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at May 13, 1999, 3:36 PM EDT for McCormick County, South Carolina; Lincoln County, Georgia. It was in force for 39 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 13, 1999, 3:36 PM EDT (19:36 UTC)
- Expired
- May 13, 1999, 4:15 PM EDT
- In force
- 39 min
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
Counties Lincoln County, GA, McCormick County, SC
The radar
The Greer radar (KGSP), 116 km from the middle of the area, began a volume at 19:38 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 |
|---|---|---|---|
| May 13, 4:00 PM EDT | Hail 0.88 | Mc Cormick, SC | Sheriff reported nickel 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 13, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 7.6 hours before the alert went out and 245 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
- 112 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 791 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCAE 131936 RRA SVRCAE SCC065-GAC181-132015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE COLUMBIA SC 336 PM EDT THU MAY 13 1999 THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MCCORMICK COUNTY IN SOUTH CAROLINA NORTHERN LINCOLN COUNTY IN GEORGIA * UNTIL 415 PM EDT * AT 335 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES NORTHWEST OF GOSHEN. THE STORM WAS MOVING TOWARD THE EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... GOSHEN AT 343 PM EDT WILLINGTON AT 347 PM EDT ELIJAH CLARK STATE PARK AT 354 PM EDT MCCORMICK AT 405 PM EDT PLUM BRANCH AT 409 PM EDT IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. AWP
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 4:50 PM EDT | Severe Thunderstorm Warning | CAE | Orangeburg | 40 min |
| May 13, 5:17 PM EDT | Severe Thunderstorm Warning | CAE | Richland | 28 min |
| May 13, 5:27 PM EDT | Severe Thunderstorm Warning | CAE | Sumter | 48 min |
| May 13, 5:47 PM EDT | Severe Thunderstorm Warning | CAE | Clarendon | 43 min |
| May 13, 3:58 PM EDT | Severe Thunderstorm Warning | CAE | McDuffie | 47 min |
| May 13, 5:20 PM EDT | Severe Thunderstorm Warning | CAE | Lincoln | 25 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 1999Severe Thunderstorm Warnings in Georgia, 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.