Alert archive / North Carolina / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 52, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 21, 2000, 4:32 PM EDT for Burke County, North Carolina. It was in force for 58 min. 2 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 21, 2000, 4:32 PM EDT (20:32 UTC)
- Expired
- May 21, 2000, 5:30 PM EDT
- In force
- 58 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Burke County, NC
The radar
The Greer radar (KGSP), 107 km from the middle of the area, began a volume at 20:33 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 21, 4:42 PM EDT | Thunderstorm Wind 56 E | Morganton, NC | |
| May 21, 4:42 PM EDT | Hail 0.75 | Morganton, NC |
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
Roanoke, VA (KRNK), launched 12:00Z, 8.5 hours before the alert went out and 255 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 756 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 142 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KGSP 212032 SVRGSP NCC023-212130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 432 PM EDT SUN MAY 21 2000 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN BURKE COUNTY IN WESTERN NORTH CAROLINA * UNTIL 530 PM EDT * AT 432 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 8 MILES SOUTHEAST OF MARION...OR ABOUT 9 MILES SOUTHWEST OF GLEN ALPINE...MOVING EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... GLEN ALPINE AT 445 PM EDT MORGANTON AT 500 PM EDT DREXEL AT 520 PM EDT CONNELLY SPRINGS AT 530 PM EDT PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR WITH ANY THUNDERSTORM. $$ HG/BWM r
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 21, 1:35 PM EDT, 2 hours 57 minutes earlier.
Area forecast discussion, May 21, 1:35 PM EDT, 2 hours 57 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 135 PM EDT SUN MAY 21 2000 SCATTERED SHOWERS DEVELOPING IN FAR WESTERN MOUNTAINS THIS AFTERNOON. THUS FAR...NOTHING ELSE DISPLAYED ON KGSP 88-D IN THE VICINITY OF THE LOW LEVEL CONVERGENCE AXIS...ALIGNED FROM NEAR CHARLOTTE ACROSS SOUTHERN MOST COUNTIES. SATELLITE IMAGERY SUGGESTS ADDITIONAL BREAKS IN OVERCAST LIKELY...ALLOWING LOW LEVELS TO BECOME UNSTABLE ENOUGH TO SUPPORT SCATTERED CONVECTION THIS EVENING. MODELS ALSO CONTINUE THEIR TRENDS OF BRINGING IN ANOTHER WEAK SHORTWAVE TO RIDE OVER THE BOUNDARY...ACCOMPANIED BY LEFT EXIT REGION OF A DIGGING 105KT 250H JET INTO SOUTHEAST STATES. BEST UPPER DIVERGENCE WITH THESE FEATURES TO PASS EAST OF AREA BY 06Z...SO ANY CONVECTION WHICH DEVELOPS AS A RESULT SHOULD BE ON THE WANE DURING THE PREDAWN...IF NOT BEFORE. WILL CONTINUE CHANCE POPS TONIGHT ALL ZONES. MAY ALSO INTRODUCE PATCHY DENSE FOG WORDING IN MOUNTAINS PER MOS/LAMP. IN THE WAKE OF THE DEPARTING SHORTWAVE...A RATHER TRANQUIL MONDAY SHAPING UP WITH DOWNSLOPE WIND FLOW EXPECTED TO DEVELOP LEE OF MOUNTAINS. BROAD TROFINESS SUGGESTED BY MODELS TO REMAIN OVER THE CWFA BUT NO OTHER FORCING MECHANISMS IN PLACE FOR CONVECTIVE DEVELOPMENT...SO AM LEANING TOWARD REMOVING POPS MOST ZONES...BUT MAY KEEP SMALL CHANCE IN MOUNTAINS DUE TO TERRAIN EFFECTS AND DIFFERENTIAL HEATING...AND PERHAPS GO A BIT ABOVE MOS/FAN TEMPS DUE DOWNSLOPE. ONE FINAL SHORTWAVE TO APPROACH MONDAY NIGHT...AND MODELS SUGGESTING THAT AN ORGANIZED CONVECTIVE SYSTEM IN THE TENNESSEE VALLEY MAY INFRINGE UPON WESTERN CWFA IN PREDAWN. ETA/AVN DIVERGE IN THEIR HANDLING OF THE SHORTWAVE ITSELF BUT ARE REMARKABLY SIMILAR IN THEIR LOW LEVEL CONVERGENCE/UPPER LEVEL DIVERGENCE COUPLETS... OVERSPREADING CWFA EARLY TUESDAY. LOW LEVEL FLOW BRIEFLY BACKS TO SOUTHWEST AHEAD OF THE SHORTWAVE...WITH ANOTHER SURGE OF LOW LEVEL MOISTURE. WILL INTRODUCE CHANCE POPS WESTERN ZONES MONDAY NIGHT...KEEPING PERIOD DRY IN EAST. ALL ZONES WILL GET 40 POPS FOR TUESDAY...BUT COULD CERTAINLY UNDERSTAND IF COVERAGE CATEGORICAL IN NATURE IN THE FOURTH PERIOD. AVL EE 056/075 057/078 052 44434 CL\T EE 064/083 063/080 058 44412 GSP EE 065/084 065/081 059 44413 .GSP...NONE. BURRUS
In the hours before
Special weather statement, May 21, 11:15 AM EDT, 5 hours 17 minutes before
GAZ010-NCZ033>037-048>059-062>072-082-SCZ001>014-019-212100- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1115 AM EDT SUN MAY 21 2000 ...ISOLATED SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING... ABUNDANT MOISTURE AHEAD OF A COLD FRONT DRAPED OVER THE FOOTHILLS OF THE CAROLINAS THIS AFTERNOON WILL GIVE RISE TO SCATTERED THUNDERSTORMS THROUGH THE EVENING HOURS. AN UPPER LEVEL DISTURBANCE WILL ALSO CROSS THE AREA AND HELP TO TRIGGER THUNDERSTORMS. COVERAGE OF THE THUNDERSTORMS WILL STEADILY GROW THIS AFTERNOON... WITH A FEW OF THESE APPROACHING SEVERE POTENTIAL. THE MAIN THREAT OF SEVERE WEATHER WILL BE FOR HAIL 3/4 TO 1 INCH IN DIAMETER AND WIND GUSTS NEAR 60 MPH. THE THREAT WILL BE GREATEST OVER PIEDMONT SECTIONS...GENERALLY ALONG AND SOUTH OF INTERSTATE 85 IN THE SOUTH CAROLINA UPSTATE...AND ALONG AND EAST OF THE INTERSTATE 77 CORRIDOR IN NORTH CAROLINA. AN ISOLATED SEVERE THUNDERSTORM CANNOT BE RULED OUT OVER THE REMAINDER OF THE WESTERN CAROLINAS AND NORTHEAST GEORGIA HOWEVER. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR THE LATEST UPDATES. HG
Nearby
Severe Thunderstorm Warnings in North Carolina, 2000Every severe thunderstorm warning in 2000
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.