Alert archive / North Carolina / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 10, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Feb 17, 1998, 9:34 AM EST for Polk County, North Carolina; Greenville County, South Carolina. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 17, 1998, 9:34 AM EST (14:34 UTC)
- Expired
- Feb 17, 1998, 10:15 AM EST
- In force
- 41 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
Counties Polk County, NC, Greenville County, SC
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 17, 9:30 AM EST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 2.6 hours before the alert went out and 241 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
- 593 m above ground
- 0-6 km bulk shear
- 88 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 456 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Feb 17, 1:54 AM EST, 7 hours 40 minutes earlier.
Area forecast discussion, Feb 17, 1:54 AM EST, 7 hours 40 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
154 AM EST TUE FEB 17 1998
CAE: CONT FFA TIL EXPIRATION...EXPECT CATEGORICAL PCPN CVRG
ONLY TIL ABT DAWN...LIKELY POPS REST OF DAY. TONIGHT/
WEDNESDAY TRENDS STILL GOOD...COULD ADD BZY FOR WED.
RAH: DONT NEED ANY EXPANSION OF FFA...ONCE CURRENT BATCH OF
PCPN ENDS THIS AM WE CAN THEN TRIM BACK EXTENT OF FFA.
ADD CHC THUNDER ALL AREAS TDY. KEEP POPS IN MTNS THRU
DAY ON WED.
FFC: CONT FFA TIL ABOUT 12Z. LIKELY POPS REST OF DAY.
DECREASING CLDS LATE TONIGHT...WED TRENDS GOOD.
KGSP VWP SHOWS SOME BACKING OF THE WINDS THROUGHOUT THE WEDGE LAYER
...BUT STILL DEEP ENOUGH TO SUPPRESS STRONGEST CONVECTION TO THE
EAST OF FA EARLY THIS AM AS PER IR SATELLITE TRENDS. STG WAA ABOVE
WEDGE...STG UPPER JET STRUCTURE & DIFFLUENCE WILL KEEP OUR ELEVATED
THUNDER CHCS GOING THROUGH EARLY AM UNTIL DRY SLOT WORKS IN.
SINCE CONVECTIVE RAIN POTENTIAL STILL PRESENT...RECOMMEND KEEPING
FFA AS IS.
DURING LATE AM/EARLY AFTERNOON TIMEFRAME...COLD POOL ALOFT ROTATES
OVER AREA STEEPENING LAPSE RATES. PROGGED TTS IN LWR 50S SUPPORT
CONVECTION FIRING IN DRY SLOT WITH LINGERING LLVL RH PRESENT...
ALTHOUGH BEST CVRG WILL BE NEAR STRONGEST HEIGHT FALLS NORTH OF
THE FA.
IMPULSES WILL CONT ROTATING AROUND UPPER LOW THROUGH TONIGHT
& UNTIL COLD CORE MOVES NE OF FA WED AM WILL NEED TO KEEP ONGOING
POP TRENDS. WITH DEEPER RH CONTINUING TO LIFT NWD ON WEDNESDAY
ALONG WITH SOME WEAK NVA DEVELOPING NOT TO MENTION A LITTLE BETTER
DOWNSLOPE COMPONENT...DRY AND MILD CONDS EXPECTED EAST OF THE MTNS
BUT PRIMARILY ACRS SC/GA.
AVL 47/40/51 753
CLT 54/46/58 943
GSP 53/43/62 741
CSHIn the hours before
Special weather statement, Feb 17, 6:06 AM EST, 3 hours 28 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-161900- SPECIAL WEATHER STATEMEMT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 606 AM EST MON FEB 16 1998 ...HAIL PRODUCING THUNDERSTORMS POSSIBLE TODAY... AN UPPER LEVEL LOW PRESSURE SYSTEM WITH COLD AIR ALOFT WILL MOVE ACROSS THE REGION LATER THIS MORNING AND THIS AFTERNOON. A STRONG JET STREAM IN PLACE OVER THE SOUTHEAST U.S. IN CONJUCTION WITH THIS SYSTEM WILL CAUSE SHOWERS AND THUNDERSTORMS TO DEVELOP ACROSS THE AREA. LOWERING FREEZING LEVELS WILL RESULT IN A FAVORABLE VERTICAL PROFILE FOR HAIL PRODUCING THUNDERSTORMS AND STRONG WINDS IN PLACE THROUGHOUT THE ATMOSPHERE MAY WORK DOWN TO THE SURFACE T4O RESULT IN GUSTY WINDS AS WELL. PLEASE STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR THE LATEST UPDATES. HORNE
Local storm report, Feb 17, 8:57 AM EST, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
857 AM EST TUE FEB 17 1998
TIME (EST) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
840 AM WARWOMAN GA WIND DAMAGE
02/17/98 RABUN 911 REPORTS TREES DOWN -
ALSO PEA HAIL COVERED
GROUND OTHER SIDE OF
COUNTY
JONESThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 17, 10:27 AM EST | Flash Flood Warning | GSP | Avery | 4 hr |
| Feb 17, 11:42 AM EST | Flash Flood Warning | GSP | Mitchell | 5 hr |
| Feb 17, 9:41 AM EST | Severe Thunderstorm Warning | GSP | Oconee | 49 min |
| Feb 17, 10:04 AM EST | Severe Thunderstorm Warning | GSP | Pickens | 41 min |
| Feb 17, 10:54 AM EST | Severe Thunderstorm Warning | GSP | Greenwood | 51 min |
| Feb 17, 11:41 AM EST | Tornado Warning | GSP | Greenwood | 34 min |
| Feb 17, 11:45 AM EST | Tornado Warning | GSP | Laurens | 45 min |
| Feb 17, 9:28 AM EST | Severe Thunderstorm Warning | GSP | Stephens | 32 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 1998Severe Thunderstorm Warnings in South Carolina, 1998Every severe thunderstorm warning in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.