Alert archive / North Carolina / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 120, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 18, 2001, 4:48 PM EDT for Cabarrus County, North Carolina. It was in force for 27 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
- Aug 18, 2001, 4:48 PM EDT (20:48 UTC)
- Expired
- Aug 18, 2001, 5:15 PM EDT
- In force
- 27 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Cabarrus County, NC
The radar
The Greer radar (KGSP), 162 km from the middle of the area, began a volume at 20:48 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 |
|---|---|---|---|
| Aug 18, 5:10 PM EDT | Thunderstorm Wind 50 E | Concord, NC | A few trees and power lines brought down southeast of town, along NC Highway 24/27 and on Reed Mine Road. |
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 12:00Z, 8.8 hours before the alert went out and 97 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
- 1407 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 527 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 4.7
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 Aug 18, 3:48 PM EDT, 1 hour earlier.
Area forecast discussion, Aug 18, 3:48 PM EDT, 1 hour before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 348 PM EDT SAT AUG 18 2001 SFC FNT ACTUALLY MOVED EAST TODAY BRINGING DRIER WLY FLOW INTO MUCH OF THE CWFA FOR THE AFTERNOON. WAVE FORMED ALONG THE FNT HELPING TO INITIATE CONVECTION JUST TO OUR EAST. FLOW SHOULD TURN BACK TO THE SW AND MOISTURE INCREASE TONIGHT IN RESPONSE TO SHORT WAVE MOVING INTO AREA. HAVE LEFT SMALL POP ACROSS CWFA TO COVER ONGOING CONVECTION AND POSSIBLE CONVECTION TONIGHT. ANOTHER WAVE MOVES INTO THE AREA LATE SUNDAY WITH GOOD MOISTURE. ETA DEPICTS RISING THETA-E WITH BULLSEYE OVER CWFA 00Z MONDAY. SPC HAS US IN SLIGHT RISK FOR DAY 2 WITH SQUALL LINE MOVING IN FROM WEST. TIMING TRICKY AGAIN SO USED 50 POP SUN/SUN NITE. SIGNIFICANT DRYING AND WLY FLOW MOVES IN MONDAY. HAVE DROPPED POP TO SILENT 20. LOWS TONIGHT TRICKY WITH LOW DEW POINTS. GONE JUST BELOW RECENT NUMBERS. HIGHS SUNDAY SIMILAR TO TODAY. THEN COOLER MONDAY WITH LOWER THICKNESSES. MDLS SHOW SOME MOISTURE AT DIFFERING TIMES IN THE EXTENDED...BUT ANY FORCING WEAK. POPS BELOW CLIMO SO WILL KEEP DRY. SHOULD SEE INCREASED CLOUDS AS WEEK PROGRESSES. TEMPS COOLER EARLY THEN RETURNING TO CLIMO STILL LOOKS GOOD. GSP 69 89 68 87 / 30 50 50 20 AND 69 89 68 87 / 30 50 50 20 CLT 69 89 68 87 / 30 50 50 20 HKY 67 86 66 85 / 20 50 50 20 AVL 65 85 62 82 / 30 50 50 20 .GSP... GA...NONE. NC...NONE. SC...NONE. RWH
Nearby
Severe 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.