Alert archive / North Carolina / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 17, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 17, 2000, 7:23 PM EDT for Union County, North Carolina. It was in force for 52 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
- Apr 17, 2000, 7:23 PM EDT (23:23 UTC)
- Expired
- Apr 17, 2000, 8:15 PM EDT
- In force
- 52 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Whole counties
County Union County, NC
The radar
The Columbia radar (KCAE), 128 km from the middle of the area, began a volume at 23:24 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, 7:32 PM EDT | Hail 0.75 | Mineral Spg, NC | |
| Apr 17, 7:58 PM EDT | Hail 0.75 | Monroe, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 17, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.4 hours before the alert went out and 134 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.
329 WUUS52 KGSP 172324 SVRGSP NCC179-180015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 723 PM EDT MON APR 17 2000 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... UNION COUNTY IN PIEDMONT NORTH CAROLINA * UNTIL 815 PM EDT * AT 723 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 6 MILES SOUTHWEST OF MONROE...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... MONROE AT 725 PM EDT WINGATE AT 740 PM EDT MARSHVILLE AT 750 PM EDT ALTHOUGH LARGE HAIL IS THE BIGGEST THREAT WITH THIS SEVERE THUNDERSTORM...BRIEF DAMAGING WINDS COULD ALSO OCCUR. $$
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, 4 hours 48 minutes earlier.
Area forecast discussion, Apr 17, 2:35 PM EDT, 4 hours 48 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
Local storm report, Apr 17, 4:16 PM EDT, 3 hours 7 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
NNNNLocal storm report, Apr 17, 4:25 PM EDT, 2 hours 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
425 PM EDT MON APR 17 2000
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
423 PM NEWLAND NC .50 INCH HAIL
04/17/00 AVERY HAILED FOR FIVE MINUTES.
REPORT FROM TRAINED
SPOTTER.
LGL
NNNNLocal storm report, Apr 17, 5:06 PM EDT, 2 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
506 PM EDT MON APR 17 2000
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
453 PM NEWLAND NC .25 INCH HAIL
04/17/00 AVERY EOC REPORT
500 PM CHARLOTTE NC .25 INCH HAIL
04/17/00 MECKLENBURG NBC 6 SPOTTER.
JAT
NNNNLocal storm report, Apr 17, 5:43 PM EDT, 1 hour 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
543 PM EDT MON APR 17 2000
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
535 PM FLAT TOP MTN NC .25 INCH HAIL
04/17/00 BUNCOMBE 35 KT WIND. REPORT FROM
TRAINED SPOTTER.
LGL
NNNNLocal storm report, Apr 17, 6:00 PM EDT, 1 hour 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
600 PM EDT MON APR 17 2000
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
505 PM LINVILLE NC 1.13 INCH HAIL
04/17/00 AVERY SPOTTER REPORT. TIME
ESTIMATED BY RADAR.
JAT
NNNNLocal storm report, Apr 17, 6:25 PM EDT, 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
625 PM EDT MON APR 17 2000
TIME (EDT) .....CITY LOCATION....... ST ...EVENT/REMARKS...
.....COUNTY LOCATION.....
618 PM 15 SE YORK SC 1.00 INCH HAIL
04/17/00 YORK PUBLIC REPORT VIA CAE.
618 PM 15 SE YORK SC 60 MPH TSTM GUST
04/17/00 YORK PUBLIC REPORT VIA CAE.
JAT
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, 4:22 PM EDT | Severe Thunderstorm Warning | GSP | Avery | 23 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 |
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.