Alert archive / North Carolina / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 14, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 17, 2000, 4:22 PM EDT for Avery County, North Carolina. It was in force for 23 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
- Apr 17, 2000, 4:22 PM EDT (20:22 UTC)
- Expired
- Apr 17, 2000, 4:45 PM EDT
- In force
- 23 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 20:26 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 |
|---|---|---|---|
| Apr 17, 4:55 PM EDT | Hail 1 | Linville, 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, 8.4 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
- 5 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 1653 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
654 WUUS52 KGSP 172022 SVRGSP NCC011-172045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 422 PM EDT MON APR 17 2000 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... AVERY COUNTY IN WESTERN NORTH CAROLINA * UNTIL 445 PM EDT * AT 422 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES NORTHEAST OF NEWLAND...OR ABOUT 2 MILES SOUTHWEST OF SUGAR MOUNTAIN...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BANNER ELK AT 425 PM EDT ALTHOUGH LARGE HAIL IS THE BIGGEST THREAT WITH THIS SEVERE THUNDERSTORM...BRIEF DAMAGING WINDS COULD ALSO OCCUR. $$ MOYER
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 Apr 17, 2:35 PM EDT, 1 hour 47 minutes earlier.
Area forecast discussion, Apr 17, 2:35 PM EDT, 1 hour 47 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 235 PM EDT MON APR 17 2000 MODELS SHOW UPPER LOW...CURRENTLY OVER THE LOWER OH VALLEY... VIGOROUSLY DIVING SE ACROSS THE SRN APPALACHIANS AND THE WESTERN CAROLINAS THIS EVENING...AND OFF THE CAROLINA COAST TUESDAY MORNING. THE PASSAGE OF THIS FEATURE WILL KEEP OUR MAIN FORECAST CONCERNS IN THE FIRST PERIOD. THE CLOSED LOW WILL MOVE OFFSHORE SLOWLY TUESDAY AND TUESDAY NITE...ALLOWING AN UPSTREAM RIDGE TO BUILD IN ON WEDNESDAY. PRIMARY FORECAST CONCERN IS IN THE SHORT TERM. SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR NC FOOTHILL/PIEDMONT ZONES AND HAVE DECIDED TO INCLUDE SMALL CHUNK OF ADJACENT SC PIEDMONT. 12Z ETA MAXIMIZES UPPER FORCING FROM LEFT EXIT REGION OF JET AND LOW LEVEL FORCING ACROSS THE NC PIEDMONT ZONES AT 00Z...WHILE TRIPLE-POINT SURFACE LOW DROPS DOWN ACROSS FORECAST AREA. EXPECT WE SHALL SEE QUITE A FEW HAILERS IN THIS REGION. THE ETA SHOWS THE MAIN FORCING VACATING THE REGION RATHER QUICKLY THIS EVENING. I THINK IT WILL BE A TOUGH CALL TO NAIL DOWN THE BACK EDGE OF THE SIGNIFICANT THUNDERSTORMS RIGHT AT 00Z. LOCATIONS TO THE WEST AND SOUTHWEST SHOULD HAVE AN INCREASINGLY LOWER CHANCE OF PRECIP AFTER 00Z. WILL PLAN ON INCLUDING A REMAINDER OF AFTERNOON PERIOD IN THE ZONES TO DEAL WITH THE ONGOING WATCH AND TO BRIDGE THE GAP UNTIL 00Z TO DEAL WITH THE THUNDERSTORM THREAT. EXPECT TO USE LIKELY PRECIP CHANCES OVER PIEDMONT...CHANCE OVER FOOTHILLS...AND PERHAPS LOW CHANCE OVER MOUNTAINS. OVERNITE...EXPECT TO SEE A SIGNIFICANT AMOUNT OF LOW LEVEL CLOUDINESS AS SATELLITE IMAGERY SHOWS PLENTY OF CLOUDS WRAPPING AROUND THE LOW. THE ETA KEEPS A POOL OF LOW LEVEL MOISTURE TO THE WEST OF THE MOUNTAINS THROUGH THE DAY TUESDAY AND INTO TUESDAY NIGHT...WHILE THE 850 MB THERMAL TROF REMAINS W OF THE MOUNTAINS AS WELL. THUS...CLOUDS LOOK LIKE A GOOD BET THRU TUESDAY NITE ACROSS THE MOUNTAINS. E OF THE MOUNTAINS...AS THE LOW MOVES OFF TO THE EAST...DOWNSLOPE SHOULD HELP TO SCATTER OUT THE CLOUDS ON TUESDAY AFTERNOON AND NIGHT. THE ENTIRE AREA SHOULD SCATTER OUT ON WEDNESDAY. AS FOR TEMPS...THE MAIN UNCERTAINTY IS TUESDAY HIGHS. WILL SPLIT THE DIFFERENCE BETWEEN FWC AND FAN AND STICK CLOSE TO OUR CURRENT ZONES. ...PRELIM NUMBERS... AVL 48/64/46/75 3210 CLT 50/67/49/78 7100 GSP 52/70/50/79 4100 .GSP...NONE. MOORE
In the hours before
Special weather statement, Apr 17, 10:46 AM EDT, 5 hours 36 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-172000- SEVERE WEATHER OUTLOOK...RETRANSMITTED... NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1046 AM EDT MON APR 17 2000 ...CHANCE OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING... A COLD FRONT WILL MOVE ACROSS THE WESTERN CAROLINAS LATE THIS AFTERNOON AND EVENING. AS TEMPERATURES WARM INTO THE 70S THIS AFTERNOON...THE ATMOSPHERE WILL BECOME MODERATELY UNSTABLE ALONG AND AHEAD OF THE FRONT. THUNDERSTORMS SHOULD DEVELOP OVER THE MOUNTAINS BY THE EARLY PART OF THE AFTERNOON AND SLOWLY MOVE EAST DURING THE MIDDLE PART OF THE AFTERNOON. A FEW OF THE THUNDERSTORMS MAY BECOME SEVERE. THE GREATEST THREAT TODAY WILL BE SEVERE THUNDERSTORMS THAT PRODUCE LARGE HAIL AND BRIEF...DAMAGING WINDS. WINDS IN THE ATMOSPHERE ARE NOT PREDICTED TO BE VERY STRONG WHICH WILL KEEP DAMAGING WINDS FROM BEING VERY WIDESPREAD. THE AREA MOST LIKELY TO HAVE SEVERE WEATHER WILL BE THE FOOTHILLS AND PIEDMONT OF THE CAROLINAS...OR GENERALLY ALONG AND TO THE SOUTH OF THE INTERSTATE 85 CORRIDOR...MAINLY DURING THE MIDDLE TO LATE AFTERNOON. THE THUNDERSTORMS SHOULD MOVE OFF TO THE EAST DURING THE EARLY EVENING. SPOTTER GROUPS SHOULD BE PREPARED TO ACTIVATE QUICKLY THIS AFTERNOON AND THIS EVENING. DISPATCHERS SHOULD ENSURE COUNTY EMERGENCY MANAGEMENT OFFICIALS ARE AWARE OF THIS INFORMATION. MOORE
Local storm report, Apr 17, 3:31 PM EDT, 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG, SC
331 PM EDT MON APR 17 2000
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOuCATION....
0331 PM NEBO NC .75 INCH HAIL
04/17/00 MCDOWELLLocal storm report, Apr 17, 3:47 PM EDT, 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
347 PM EDT MON APR 17 2000
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
336 PM MARION NC .75 INCH HAIL
04/17/00 MCDOWELL REPORT FROM SPOTTER AT
MARION RADIO STATION
LGL
NNNNLocal storm report, Apr 17, 4:07 PM EDT, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
407 PM EDT MON APR 17 2000
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
401 PM LENOIR NC .25 INCH HAIL
04/17/00 CALDWELL REPORT FROM CALDWELL
COUNTY EOC
LGL
NNNNLocal storm report, Apr 17, 4:13 PM EDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
413 PM EDT MON APR 17 2000
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
410 PM PENSACOLA NC .50 INCH HAIL
04/17/00 YANCEY PUBLIC REPORT. GROUND
WHITE WITH HAIL. LASTED 15
MINUTES.
LGL
NNNNLocal storm report, Apr 17, 4:16 PM EDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
416 PM EDT MON APR 17 2000
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
415 PM NEWLAND NC .50 INCH HAIL
04/17/00 AVERY GROUND WHITE WITH HAIL.
REPORT FROM AVERY COUNTY
d EOC.
LGL
NNNNThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 3:22 PM EDT | Severe Thunderstorm Warning | GSP | Burke | 38 min |
| Apr 17, 4:45 PM EDT | Severe Thunderstorm Warning | GSP | Avery | 30 min |
| Apr 17, 5:22 PM EDT | Severe Thunderstorm Warning | GSP | Cabarrus, Mecklenburg | 23 min |
| Apr 17, 7:23 PM EDT | Severe Thunderstorm Warning | GSP | Union | 52 min |
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.