Alert archive / South Carolina / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 26, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 25, 2001, 10:29 PM EDT for York County, South Carolina; Mecklenburg County, North Carolina. It was in force for 46 min. 5 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
- May 25, 2001, 10:29 PM EDT (02:29 UTC)
- Expired
- May 25, 2001, 11:15 PM EDT
- In force
- 46 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
Counties Mecklenburg County, NC, York County, SC
The radar
The Greer radar (KGSP), 113 km from the middle of the area, began a volume at 02:29 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 25, 10:30 PM EDT | Hail 0.88 | Rock Hill, SC | |
| May 25, 10:50 PM EDT | Hail 0.75 | Pineville, NC | Dime-sized hail reported near the South Carolina state line. |
| May 25, 10:58 PM EDT | Hail 0.75 | Rock Hill, SC | Numerous reports of dime-sized hail with a second severe thunderstorm that affected the Rock Hill area. |
| May 25, 11:04 PM EDT | Thunderstorm Wind 52 E | Matthews, NC | Skywarn spotter estimated winds in excess of 50 knots. |
| May 25, 11:05 PM EDT | Hail 0.75 | Rock Hill, SC |
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
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 2.5 hours before the alert went out and 147 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
- 132 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 1477 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
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 25, 8:50 PM EDT, 1 hour 39 minutes earlier.
Area forecast discussion, May 25, 8:50 PM EDT, 1 hour 39 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 850 PM EDT FRI MAY 25 2001 SHOWERS NOW EXITING EASTERN COUNTIES OF CWA. RUC MAINTAINS PERSISTENT BAND OF HIGH RH ACROSS EASTERN PART OF AREA OVERNIGHT. WITH ADVANCE OF SHORT WAVE TROF ALOFT... PRUDENT TO MAINTAIN LOW CHANCE POPS EASTERNMOST COUNTIES DURING FIRST PERIOD. REMAINDER OF CWA WILL HAVE CLEAR SKY WITH SOME MORNING FOG... ESPECIALLY MOUNTAIN VALLEYS. NO MAJOR CHANGES WILL BE MADE TO LOW TEMPERATURES IN ZONE FORECASTS THAT WILL BE ISSUED SHORTLY. .GSP... GA...NONE. NC...NONE. SC...NONE. LGL
In the hours before
Local storm report, May 25, 9:55 PM EDT, 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
955 PM EDT FRI MAY 25 2001
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
945 PM UNION SC MARBLE SIZE HAIL
05/25/01 UNION REPORT FROM COUNTY EPD
DIRECTOR AND 911 DISPATCH
LGLLocal storm report, May 25, 10:27 PM EDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
1027 PM EDT FRI MAY 25 2001
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1020 PM 5 S YORK SC .75 INCH HAIL
05/25/01 YORK REPORT FROM AMATEUR RADIO
LGLThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 10:01 PM EDT | Severe Thunderstorm Warning | GSP | York | 29 min |
| May 25, 11:04 PM EDT | Severe Thunderstorm Warning | GSP | Union | 41 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2001Severe Thunderstorm Warnings in North Carolina, 2001Every severe thunderstorm warning in 2001
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.