Alert archive / North Carolina / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 49, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 13, 1999, 7:59 PM EDT for Avery County, North Carolina. It was in force for 36 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
- May 13, 1999, 7:59 PM EDT (23:59 UTC)
- Expired
- May 13, 1999, 8:35 PM EDT
- In force
- 36 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Avery County, NC
The radar
The Knoxville radar (KMRX), 133 km from the middle of the area, began a volume at 00:00 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 13, 8:05 PM EDT | Hail 1 | Newland, 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 12.0 hours before the alert went out and 182 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
- 4 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 1230 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- -28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KGSP 140001 RRA SVRGSP NCC011-140035- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 759 PM EDT THU MAY 13 1999 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... AVERY COUNTY IN WESTERN NORTH CAROLINA * UNTIL 835 PM EDT * AT 758 PM EDT... NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM IN THE VICINITY OF NEWLAND... MOVING EAST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LINVILLE AT 810 PM EDT ELK VALLEY AT 810 PM EDT SUGAR MOUNTAIN AT 820 PM EDT BANNER ELK AT 820 PM EDT BEECH MOUNTAIN AT 825 PM EDT PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR WITH ANY THUNDERSTORM. HG
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 13, 2:30 PM EDT, 5 hours 29 minutes earlier.
Area forecast discussion, May 13, 2:30 PM EDT, 5 hours 29 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 230 PM EDT THU MAY 13 1999 VORT MAX SEEN SPINNING INTO CENTRAL TN ON WATER VAPOR IMAGERY IS PROGGED TO SLOWLY CHURN ACROSS THE WRN CAROLINAS TONIGHT AND INTO EARLY FRIDAY. LOBES OF DPVA COMBINED WITH INSTABILITY AND LOW WBZ HEIGHTS TONIGHT WILL CONTINUE THE THREAT FOR LARGE HAIL WHILE MODERATE DRY PUNCH AT MID LEVELS COULD ALLOW FOR NEAR SEVERE WIND GUSTS. COUPLED DIVERGENCE WITH THE UPPER JETS STAYS MAINLY ALONG NC/VA BORDER... PROVIDING SUPPORT FARTHER N THAN MAIN INSTABILITY OVERNIGHT. WILL MENTION MAINLY RAIN FRI BUT WITH TSTM PSBL OVER SRN PORTIONS WITH UPPER COLD POOL PASSAGE AND CONVERGENCE WITH LOW. DEEP MOIST NE FLOW DEVELOPS IN WAKE OF LOW WITH LOW LEVEL THCK FALLS TOMORROW. EASTERLY COMPONENT COULD YIELD UPSLOPE FLOW AND LIGHT RAIN FOR FRI NIGHT WHILE WEAK ISENTROPIC LIFT MAY AFFECT EASTERN PIEDMONT SECTION THROUGH EARLY SAT. TEMPS AND POPS WILL BE MUCH MORE IN LINE WITH COOLER WETTER FAN GIVEN STRENGTH OF UPPER LOW AND COOL ADVECTION BEHIND SYSTEM. ONLY DEVIATION WILL BE WARMER OVERNIGHT MINS TONIGHT GIVEN CURRENT DEWPOINTS AND UPSTREAM PRECIP. WRKGSP TO CAE AROUND 315 PM. AVL 56/67/52/68 6642 CLT 61/70/52/67 6753 GSP 60/70/53/68 6642 .GSP...NONE. HG
In the hours before
Local storm report, May 13, 6:15 PM EDT, 1 hour 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
615 PM EDT THU MAY 13 1999
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
545 PM DANA NC .88 INCH HAIL
05/13/99 HENDERSON NICKEL SIZE HAIL ON
JACKSON LOOP ROAD. REPORT
FROM AMATEUR RADIO.
BWMLocal storm report, May 13, 6:15 PM EDT, 1 hour 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
615 PM EDT THU MAY 13 1999
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
545 PM DANA NC .88 INCH HAIL
05/13/99 HENDERSON NICKEL SIZE HAIL ON
JACKSON LOOP ROAD. REPORT
FROM AMATEUR RADIO.
BWMLocal storm report, May 13, 6:54 PM EDT, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
654 PM EDT THU MAY 13 1999
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
625 PM WAXHAW NC .75 INCH HAIL
05/13/99 UNION TRAINED SPOTTER REPORTED
DIME SIZE HAIL NEAR
WAXHAW.
BWMLocal storm report, May 13, 6:54 PM EDT, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
654 PM EDT THU MAY 13 1999
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
625 PM WAXHAW NC .75 INCH HAIL
05/13/99 UNION TRAINED SPOTTER REPORTED
DIME SIZE HAIL NEAR
WAXHAW.
BWMLocal storm report, May 13, 7:42 PM EDT, 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
742 PM EDT THU MAY 13 1999
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
733 PM 5 NE SPARTANBURG SC .75 INCH HAIL
05/13/99 SPARTANBURG DIME SIZED HAIL REPORTED
IN VICINITY OF BOILING
SPRINGS. REPORTED BY
SKYWARN SPOTTER.
MOORELocal storm report, May 13, 7:42 PM EDT, 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
742 PM EDT THU MAY 13 1999
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
733 PM 5 NE SPARTANBURG SC .75 INCH HAIL
05/13/99 SPARTANBURG DIME SIZED HAIL REPORTED
IN VICINITY OF BOILING
SPRINGS. REPORTED BY
SKYWARN SPOTTER.
MOOREThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 5:12 PM EDT | Severe Thunderstorm Warning | GSP | Polk | 63 min |
| May 13, 5:27 PM EDT | Severe Thunderstorm Warning | GSP | Henderson | 33 min |
| May 13, 5:52 PM EDT | Severe Thunderstorm Warning | GSP | Union | 63 min |
| May 13, 6:24 PM EDT | Severe Thunderstorm Warning | GSP | Mecklenburg | 36 min |
Nearby
Severe Thunderstorm Warnings in North 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.