Alert archive / South Carolina / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 30, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 6, 1999, 12:00 PM EDT for Union County, South Carolina. It was in force for 50 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
- May 6, 1999, 12:00 PM EDT (16:00 UTC)
- Expired
- May 6, 1999, 12:50 PM EDT
- In force
- 50 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Union County, SC
The radar
The Greer radar (KGSP), 59 km from the middle of the area, began a volume at 16:03 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 |
|---|---|---|---|
| May 6, 12:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 4.0 hours before the alert went out and 220 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
- 209 J/kg
- Mixed-layer CIN
- -304 J/kg
- Mixed-layer LCL
- 551 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at May 6, 10:10 AM EDT, 1 hour 50 minutes earlier.
Area forecast discussion, May 6, 10:10 AM EDT, 1 hour 50 minutes before
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Local storm report, May 6, 7:05 AM EDT, 4 hours 55 minutes before
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</html>The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 1:52 AM EDT | Severe Thunderstorm Warning | GSP | Macon | 48 min |
| May 6, 1:59 AM EDT | Severe Thunderstorm Warning | GSP | Swain | 51 min |
| May 6, 2:28 AM EDT | Severe Thunderstorm Warning | GSP | Jackson | 47 min |
| May 6, 2:49 AM EDT | Severe Thunderstorm Warning | GSP | Haywood | 36 min |
| May 6, 5:05 AM EDT | Severe Thunderstorm Warning | GSP | Jackson | 35 min |
| May 6, 5:30 AM EDT | Severe Thunderstorm Warning | GSP | Haywood | 30 min |
| May 6, 6:04 AM EDT | Severe Thunderstorm Warning | GSP | Buncombe | 36 min |
| May 6, 6:22 AM EDT | Tornado Warning | GSP | Buncombe, McDowell, Yancey | 33 min |
| May 6, 11:39 AM EDT | Severe Thunderstorm Warning | GSP | Laurens | 46 min |
| May 6, 1:50 PM EDT | Severe Thunderstorm Warning | GSP | Greenwood | 25 min |
| May 6, 1:18 AM EDT | Severe Thunderstorm Warning | GSP | Rabun | 32 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.