Alert archive / South Carolina / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 142, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 11, 2004, 5:03 PM EDT for Cherokee County, South Carolina. It was in force for 57 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 11, 2004, 5:03 PM EDT (21:03 UTC)
- Expired
- Jul 11, 2004, 6:00 PM EDT
- In force
- 57 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Counties, with a storm outline in the text
County Cherokee County, SC
The radar
The Greer radar (KGSP), 53 km from the middle of the area, began a volume at 21:05 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, 9.1 hours before the alert went out and 200 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
- 45 J/kg
- Mixed-layer CIN
- -187 J/kg
- Mixed-layer LCL
- 1209 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 42 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 112103 SVRGSP SCC021-112200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 504 PM EDT SUN JUL 11 2004 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN CHEROKEE COUNTY IN UPSTATE SOUTH CAROLINA * UNTIL 600 PM EDT * AT 455 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED 14 MILES SOUTHEAST OF THICKETTY...OR ABOUT 12 MILES NORTHEAST OF UNION...DRIFTING SLOWLY NORTHWARD. * THE SEVERE THUNDERSTORM WILL REMAIN IN RURAL SOUTHERN CHEROKEE COUNTY 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 3505 8180 3493 8177 3487 8148 3505 8142 $$ LAMB
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 11, 2:50 PM EDT, 2 hours 13 minutes earlier.
Area forecast discussion, Jul 11, 2:50 PM EDT, 2 hours 13 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 250 PM EDT SUN JUL 11 2004 .SHORT TERM (TONIGHT THROUGH WEDNESDAY NIGHT)... NUMEROUS SHOWERS AND THUNDERSTORMS ARE DEVELOPING ALONG THE LEE SLOPES ATTM. COMBINATION OF 10 KT ELY UPSLOPE FLOW (AS SEEN ON THE KGSP-88D VAD WIND PROFILER) AND VERY HIGH DWPT AIR (L70S) IS RESULTING IN THE PCPN. WE REALLY ARE NOT ALL THAT FAVORABLE ALOFT WITH WEAK ANITCYCLONIC FLOW...BUT LLVL FORCING IS OVERCOMING THAT. SO FAR PCPN HAS NOT ANCHORED VERY LONG IN ONE PLACE. INSTEAD IT SEEMS TO MOVE ONTO NEW...UNDISTURBED AIR RATHER THAN STANDING IN ONE PLACE. THIS PROBABLY HAS SOMETHING TO DO WITH THE WEAK DEEP LAYER SHEAR...BUT STILL WOULD NOT BE SURPRISED TO SEE A FEW FLOODING PROBLEMS DEVELOP. WE HAVE AN SPS ADDRESSING THIS ISSUE. ALL THE NUMERICAL MODELS PROG THE LLVL FLOW TO VEER RATHER MARKEDLY EARLY THIS EVENING...SO I THINK WE WL SEE THE PCPN BEGIN TO MOVE A LITTLE MORE TO THE EAST AND AFFECT SLOPES WITH A DIFFERENT ASPECT. THEREFORE WL NOT ISSUE A FLOOD WATCH ATTM. LATER TNGT BOTH THE ETA AND GFS BRING A WEAK H5 SHORTWAVE INTO THE MTN ZONES. THE MID SHIFT CAUGHT ON TO THIS AND HAVE CONTINUED CHANCE POPS ALL NGHT IN THE WRN MTNS. MON AND TUE LOOK QUITE SIMILAR WITH WEAK CYCLONIC FLOW OVER THE REGION AS HGHTS BEGIN TO FALL OVER THE ERN CONUS. LAYER RH VALUES ARE HIGHER ON MON...SO SUSPECT COVERAGE WL BE GREATER. SPC EVEN HAS US IN A SEE TEXT AREA...SUSPECTING THAT SOME WET MICROBURSTS MIGHT BE POSSIBLE LATER TMRW. LATE MON NGHT WE ONCE AGAIN SEE SHORT WAVE ENERGY ENTER THE WRN ZONES..AND HAVE AGAIN KEPT ELEVATED POPS IN THE WRN ZONES. WITH A DRIER COLUMN ON TUE...HAVE LOWERED POPS TO 30 PERCENT ACROSS THE CWA. SEVERE THREAT MAY BE LITTLE HIGHER WITH EVEN DRIER AIR ALOFT...THOUGH IT WL BE LOCALIZED WITH LGT SHEAR. ON WED AN UNSEASONABLY STRONG LONG WAVE TROF RAPIDLY BEGINS TO DEEPEN OVER THE ERN CONUS. THIS WL SEND A RATHER STRONG COLD FRONT THROUGH THE REGION WED NGHT. MODELS SHOW GOOD INSTABILITY AHEAD OF THE FRONT...BROAD H5 PVA AND BETTER SHEAR THAN WE HAVE HAD FOR A WHILE. THE BEST LLVL CONVERGENCE STAYS WELL E OF THE REGION...BUT CERTAINLY CANNOT RULE OUT CHANCE POPS ATTM WED AFTN. && .LONG TERM (THURSDAY THROUGH SUNDAY)... WE WL BE ON THE BACK SIDE OF THE STRONG LONG WAVE TROF THU-SAT WHICH WILL RESULT IN COOLER TEMPS AND LOWER DWPTS. AFTER THE RECENT MUGGY AND HOT WEATHER...IT WL FEEL VERY NICE. SOME TEMPERATURE AND DWPT RECOVERY ON SUN AS FLOW BECOMES MORE ZONAL...BUT WL STILL KEEP THE FORECAST DRY. && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SHORT TERM...BPM LONG TERM...JAT
Hazardous weather outlook, Jul 11, 5:48 AM EDT, 11 hours 15 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 548 AM EDT SUN JUL 11 2004 GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-120947- ABBEVILLE SC-ALEXANDER NC-ANDERSON SC-AVERY NC-BUNCOMBE NC-BURKE NC- CABARRUS NC-CALDWELL NC-CATAWBA NC-CHEROKEE SC-CHESTER SC- CLEVELAND NC-DAVIE NC-ELBERT GA-FRANKLIN GA-GASTON NC-GRAHAM NC- GREATER GREENVILLE SC-GREATER OCONEE SC-GREATER PICKENS SC- GREENVILLE MOUNTAINS SC-GREENWOOD SC-HABERSHAM GA-HART GA-HAYWOOD NC- HENDERSON NC-IREDELL NC-LAURENS SC-LINCOLN NC-MACON NC-MADISON NC- MCDOWELL NC-MECKLENBURG NC-MITCHELL NC-NORTHERN JACKSON NC- OCONEE MOUNTAINS SC-PICKENS MOUNTAINS SC-POLK NC-RABUN GA-ROWAN NC- RUTHERFORD NC-SOUTHERN JACKSON NC-SPARTANBURG SC-STEPHENS GA- SWAIN NC-TRANSYLVANIA NC-UNION SC-UNION NC-YANCEY NC-YORK SC- 548 AM EDT SUN JUL 11 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA... UPSTATE SOUTH CAROLINA...AND EXTREME NORTHEAST GEORGIA. .DAY ONE... SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP TODAY ALONG THE REMNANTS OF A STALLED FRONT ACROSS THE WESTERN CAROLINAS AND NORTHEAST GEORGIA. COVERAGE OF THE THUNDERSTORMS WILL BE GREATEST ACROSS WESTERN NORTH CAROLINA. THE THUNDERSTORMS WILL BE CAPABLE OF PRODUCING FREQUENT LIGHTNING AND BRIEFLY GUSTY WINDS. ALSO...ANY THUNDERSTORMS THAT DEVELOP WILL MOVE VERY SLOWLY. TORRENTIAL DOWNPOURS WILL BE POSSIBLE WITH ANY THUNDERSTORM. .DAYS TWO THROUGH SEVEN... MAINLY AFTERNOON AND EVENING THUNDERSTORMS MAY DEVELOP EACH DAY THROUGH WEDNESDAY...WHEN A COLD FRONT WILL CROSS THE AREA. THE USUAL HAZARDS OF LIGHTNING...LOCALLY HEAVY RAINFALL...AND BRIEF WIND GUSTS WILL BE POSSIBLE WITH ANY OF THESE THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. HG
In the hours before
Special weather statement, Jul 11, 1:44 PM EDT, 3 hours 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 144 PM EDT SUN JUL 11 2004 GAZ010-017-018-NCZ033-034-048>055-058-059-062>067-SCZ001>007-120100- AVERY NC-BUNCOMBE NC-BURKE NC-CALDWELL NC-GRAHAM NC- GREATER GREENVILLE SC-GREATER OCONEE SC-GREATER PICKENS SC- GREENVILLE MOUNTAINS SC-HABERSHAM GA-HAYWOOD NC-HENDERSON NC- MACON NC-MADISON NC-MCDOWELL NC-MITCHELL NC-NORTHERN JACKSON NC- OCONEE MOUNTAINS SC-PICKENS MOUNTAINS SC-POLK NC-RABUN GA- RUTHERFORD NC-SOUTHERN JACKSON NC-SPARTANBURG SC-STEPHENS GA- SWAIN NC-TRANSYLVANIA NC-YANCEY NC- 144 PM EDT SUN JUL 11 2004 ...SEVERE WEATHER OUTLOOK... EASTERLY LOW LEVEL WINDS WILL LIFT VERY MOIST AIR ACROSS THE FOOTHILLS AND INTO THE EASTERN SLOPES OF THE MOUNTAINS THIS AFTERNOON AND EVENING. THIS WILL RESULT IN SLOW MOVING THUNDERSTORMS CAPABLE OF PRODUCING VERY HEAVY RAIN. A FEW AREAS WILL LIKELY SEE SEVERAL INCHES OF RAIN...WITH ISOLATED FLASH FLOODING DEVELOPING. IF IT APPEARS THAT THE HEAVY RAIN WILL BECOME MORE WIDESPREAD...AND WITH IT THE FLASH FLOOD THREAT....THEN A FLOOD WATCH MAY NEED TO BE ISSUED LATER IN THE AFTERNOON. SOME OF THE THUNDERSTORMS WILL ALSO BE CAPABLE OF PRODUCING DAMAGING WINDS AS THEY BRING DOWN DRIER AIR IN THE MIDDLE LEVELS OF THE ATMOSPHERE. THERE MAY BE SOME LARGE HAIL...BUT THE PRIMARY SEVERE WEATHER CONCERN WITH THESE STORMS WILL BE DAMAGING WINDS IN EXCESS OF 60 MPH. AREAS WITH THE BEST CHANCE OF SEEING HEAVY RAIN AND SEVERE THUNDERSTORMS WILL BE ALONG AND WEST OF A LINE FROM WALHALLA TO GREENVILLE...RUTHERFORDTON...MORGANTON AND LENOIR. SPOTTER GROUPS SHOULD BE PREPARED TO ACTIVATE QUICKLY LATE THIS AFTERNOON AND THIS EVENING. DISPATCHERS SHOULD ENSURE COUNTY EMERGENCY MANAGEMENT OFFICIALS ARE AWARE OF THIS INFORMATION. STAY TUNED TO NOAA WEATHER RADIO OR THE MEDIA FOR THE LATEST WEATHER INFORMATION OR SEVERE WEATHER WATCHES OR WARNINGS. MCAVOY
Local storm report, Jul 11, 3:38 PM EDT, 1 hour 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
338 PM EDT SUN JUL 11 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0325 PM TSTM WND DMG 3 SE GREER 34.91N 82.19W
07/11/2004 SPARTANBURG SC AMATEUR RADIO
HAM RADIO OPERATOR REPORTED TREES AND POWER LINES DOWN IN
THE ABNER CREEK...LIBERTY HILL ROAD AREA...BETWEEN
HIGHWAY 14 AND HIGHWAY 101. OPERATOR SAID STRAIGHT LINE
WIND DAMAGE.
&&
DEOLocal storm report, Jul 11, 3:49 PM EDT, 1 hour 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
349 PM EDT SUN JUL 11 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0340 PM HAIL 3 SW GREENVILLE 34.81N 82.41W
07/11/2004 0.75 INCH GREENVILLE SC TRAINED SPOTTER
A TRAINED SPOTTER REPORTED PENNY SIZED HAIL ON WHITEHORSE
ROAD ABOUT 3 MILES NORTH OF INTERSTATE 85.
&&
DEOLocal storm report, Jul 11, 4:10 PM EDT, 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
410 PM EDT SUN JUL 11 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0330 PM TSTM WND DMG 4 NE GREER 34.98N 82.18W
07/11/2004 SPARTANBURG SC NWS EMPLOYEE
NUMEROUS TREES DOWN ALONG HAMPTON ROAD BETWEEN GREER AND
INMAN.
&&
DEOThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 3:14 PM EDT | Severe Thunderstorm Warning | GSP | Greenville, Spartanburg | 61 min |
| Jul 11, 4:28 PM EDT | Severe Thunderstorm Warning | GSP | Anderson, Greenville | 62 min |
| Jul 11, 4:42 PM EDT | Severe Thunderstorm Warning | GSP | Union | 63 min |
| Jul 11, 5:13 PM EDT | Severe Thunderstorm Warning | GSP | Greenwood | 62 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2004Every severe thunderstorm warning in 2004
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.