Alert archive / North Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 52, NWS Greenville-Spartanburg, SC

May 21, 2000Burke County, North Carolina

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

TimeReportWhereRemark
May 21, 4:42 PM EDTThunderstorm Wind 56 EMorganton, NC
May 21, 4:42 PM EDTHail 0.75Morganton, 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.

Skew-T log-pSkew-T log-p diagram, Roanoke, VA at 12:00Z on 2000-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2000-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

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.