Alert archive / North Carolina / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 285, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 21, 2003, 7:38 PM EDT for Iredell County, North Carolina. It was in force for 22 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2003, 7:38 PM EDT (23:38 UTC)
- Expired
- Jul 21, 2003, 8:00 PM EDT
- In force
- 22 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Counties, with a storm outline in the text
County Iredell County, NC
The radar
The Greer radar (KGSP), 148 km from the middle of the area, began a volume at 23:39 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.6 hours before the alert went out and 101 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
- 2475 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 548 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- -9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KGSP 212338 SVRGSP NCC097-220000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 737 PM EDT MON JUL 21 2003 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL IREDELL COUNTY IN THE PIEDMONT OF NORTH CAROLINA * UNTIL 800 PM EDT * AT 737 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES SOUTH OF STATESVILLE...OR ABOUT 3 MILES SOUTHEAST OF TROUTMAN...MOVING EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR MOORESVILLE AT 745 PM 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. LAT...LON 3577 8106 3554 8092 3554 8075 3585 8081 $$ RBN
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 Jul 21, 3:20 PM EDT, 4 hours 18 minutes earlier.
Area forecast discussion, Jul 21, 3:20 PM EDT, 4 hours 18 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 320 PM EDT MON JUL 21 2003 ISOLATED TO WIDELY SCATTERED CONVECTION CONTINUES TO DEVELOP ACROSS THE WESTERN CAROLINAS AND NORTHEAST GEORGIA...IN AN AIRMASS CHARACTERIZED BY CAPES RANGING FROM 2500 IN THE MOUNTAINS...TO 3500 J/KG ALONG THE EASTERN PERIPHERY OF THE CWFA. WE WILL ADVERTISE CHANCE POPS ACROSS THE ENTIRE REGION EARLY THIS EVENING TO HANDLE THIS ACTIVITY. WITH MODERATE TO HIGH INSTABILITY AND STEEP MID LEVEL THETA-E LAPSES...EXPECT THAT WE WILL SEE A FEW WET MICROBURSTS HERE AND THERE THIS EVENING. OF GREATER CONCERN IS THE RATHER STRONG MCS CURRENTLY ADVANCING OUT OF SOUTHERN KENTUCKY...INTO NORTHERN MIDDLE/NORTHEAST TENN. THE UNSTABLE AIRMASS AHEAD OF THIS FEATURE AND CORFIDI VECTORS/THERMAL WIND PROGS SHOULD SUPPORT IT INTO OUR NC MNTNS DURING THE MID/LATE EVENING...AND WILL CARRY LIKELY POPS THERE DURING THIS TIMEFRAME. HOWEVER...WITH LACK OF UPPER SUPPORT/ADEQUATE SHEAR...THE MCS SHOULD HAVE DIFFICULTY MAINTAINING ITSELF EAST OF THE MOUNTAINS...SO POPS WILL BE HELD IN THE CHANCE RANGE THERE. TUESDAY...PERSISTENT EAST COAST TROUGH AMPLIFIES AS A STRONG SW MOVES INTO THE BASE OF THE TROUGH...AND DEEP LAYER W/SW FLOW STRENGTHENS QUITE NICELY IN RESPONSE...ESP FOR THIS TIME OF YEAR. ALTHOUGH INCREASE IN CLOUD COVER AND RATHER WEAK MID LEVEL LAPSE RATES WILL PRECLUDE THE DEVELOPMENT OF A TERRIBLY UNSTABLE AIRMASS...EXPECT CONVECTION TO REDEVELOP TOMORROW AFTERNOON WITHIN LEE TROUGH...AND/OR PERHAPS ALONG OUTFLOW BOUNDARY(S) LEFT BEHIND FROM TONIGHTS MCS. SHEAR WILL BE MORE THAN ADEQUATE FOR SOME OF THIS ACTIVITY TO ORGANIZE INTO SEVERE MULTICELL CLUSTERS...AND WE WILL ADVERTISE HIGH CHANCE TO LIKELY POPS TOMORROW AFTERNOON. AS THE SW TROUGH AND ASSOCIATED FRONTAL BOUNDARY MOVES INTO THE AREA TUESDAY EVENING/NIGHT...AND THE REGION COMES UNDER THE INFLUENCE OF THE RIGHT ENTRANCE REGION OF AN 80KT H2 JET...SUSPECT THAT WE WILL SEE A LARGE MCS AFFECT THE CWFA DURING THIS TIME...AND LIKELY POPS WILL BE MAINTAINED FOR THIS PERIOD. ASSUMING THAT THE AIRMASS ISNT COMPLETELY WORKED OVER FROM TOMORROW AFTERNOONS CONVECTION...THERE SHOULD BE A CONTINUED THREAT OF SEVERE WEATHER INTO TUESDAY NIGHT. HAVE LINGERED POPS INTO WEDNESDAY AND PART OF THURSDAY...ESPECIALLY ACROSS THE EAST...AS THE BOUNDARY BEGINS TO STALL IN OR NEAR THE AREA. FOR FRIDAY THROUGH SUNDAY...THE FORECAST WILL REMAIN FREE OF POPS...AS THE EAST COAST TROUGH DEAMPLIFIES AND THE BOUNDARY SLOWLY WASHES OUT OVER THE SOUTHEAST. POPS RETURN TO THE FORECAST FOR MONDAY...AS MEDIUM RANGE MODELS HINT AT A REAMPLIFICATION OF THE TROUGH. .GSP... GA...NONE. NC...NONE. SC...NONE. LANE
Hazardous weather outlook, Jul 21, 1:40 PM EDT, 5 hours 58 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-211945- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 140 PM EDT MON JUL 21 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA... UPSTATE SOUTH CAROLINA...AND EXTREME NORTHEAST GEORGIA. .DAY ONE...TODAY SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND EVENING. ONE OR TWO OF THEM COULD PRODUCE DAMAGING WIND GUSTS. OTHER THUNDERSTORMS APPROACHING FROM THE WEST WILL MOVE INTO THE NORTH CAROLINA MOUNTAINS THIS EVENING...AND COULD PRODUCE MORE SEVERE WEATHER...MAINLY IN THE FORM OF WIND DAMAGE. FOR MORE INFORMATION...SEE THE SEVERE WEATHER OUTLOOK (SPSGSP) ISSUED AT 130 PM. .DAYS TWO THROUGH SEVEN... THUNDERSTORMS ARE POSSIBLE AGAIN ON TUESDAY...WEDNESDAY...AND THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED. MOORE
In the hours before
Local storm report, Jul 21, 4:37 PM EDT, 3 hours 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
437 PM EDT MON JUL 21 2003
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
353 PM 10 NW HENDERSONVILLE NC WIND DAMAGE
07/21/03 HENDERSON EOC REPORT.
JATLocal storm report, Jul 21, 4:58 PM EDT, 2 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
458 PM EDT MON JUL 21 2003
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
330 PM 1 SE AVL NC WIND DAMAGE
07/21/03 HENDERSON PUBLIC REPORTED NINE
BRADFORD PEAR TREES BLOWN
DOWN AT GOLF COURSE...
LARGEST OF WHICH WAS 15
IN DIAM. ALSO PEA SIZED
HAIL.
LAMBLocal storm report, Jul 21, 5:18 PM EDT, 2 hours 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
518 PM EDT MON JUL 21 2003
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
501 PM 2 NW TAYLORSVILLE NC 1.00 INCH HAIL
07/21/03 ALEXANDER SPOTTER REPORT.
JATLocal storm report, Jul 21, 6:46 PM EDT, 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
646 PM EDT MON JUL 21 2003
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
635 PM NEWTON NC .75 INCH HAIL
07/21/03 CATAWBA PUBLIC REPORT.
JATLocal storm report, Jul 21, 6:50 PM EDT, 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
650 PM EDT MON JUL 21 2003
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
647 PM 10 N SHELBY NC 1.00 INCH HAIL
07/21/03 CLEVELAND QUARTER SIZE HAIL
REPORTED BY SPOTTER.
630 PM UNION SC WIND DAMAGE
07/21/03 UNION SPOTTER REPORTED TREES
DOWN.
RBLocal storm report, Jul 21, 7:26 PM EDT, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
726 PM EDT MON JUL 21 2003
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
700 PM 2 N NEWTON NC WIND DAMAGE
07/21/03 CATAWBA A COUPLE OF TREES ON
POWER LINES ALONG HIGHWAY
70.
RBNThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 4:42 PM EDT | Severe Thunderstorm Warning | GSP | Alexander | 63 min |
| Jul 21, 5:57 PM EDT | Severe Thunderstorm Warning | GSP | Graham | 48 min |
| Jul 21, 6:33 PM EDT | Severe Thunderstorm Warning | GSP | Catawba | 42 min |
| Jul 21, 6:34 PM EDT | Severe Thunderstorm Warning | GSP | Cleveland | 56 min |
| Jul 21, 7:26 PM EDT | Severe Thunderstorm Warning | GSP | Catawba, Lincoln | 49 min |
| Jul 21, 7:49 PM EDT | Severe Thunderstorm Warning | GSP | Mecklenburg | 56 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2003Every severe thunderstorm warning in 2003
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; radar from the NEXRAD Level II archive.