Alert archive / North Carolina / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 159, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 5, 2004, 4:17 PM EDT for Union County, North Carolina. It was in force for 43 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
- Aug 5, 2004, 4:17 PM EDT (20:17 UTC)
- Expired
- Aug 5, 2004, 5:00 PM EDT
- In force
- 43 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Counties, with a storm outline in the text
County Union County, NC
The radar
The Columbia radar (KCAE), 139 km from the middle of the area, began a volume at 20:20 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 5, 12:35 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.3 hours before the alert went out and 123 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
- 275 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1447 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KGSP 052017 SVRGSP NCC179-052100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 417 PM EDT THU AUG 5 2004 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... UNION COUNTY IN THE PIEDMONT OF NORTH CAROLINA * UNTIL 500 PM EDT * AT 413 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED 7 MILES NORTH OF MONROE...AND MOVING SOUTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... MONROE AROUND 430 PM EDT WINGATE AROUND 445 PM EDT MARSHVILLE AROUND 455 PM EDT STURDIVANTS AROUND 500 PM EDT 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 3522 8058 3506 8069 3482 8027 3503 8012 $$ JAT
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 Aug 5, 3:08 PM EDT, 1 hour 9 minutes earlier.
Area forecast discussion, Aug 5, 3:08 PM EDT, 1 hour 9 minutes before
AREA FORECAST DISCUSSION...UPDATED TO CLEAR COUNTIES FORM WATCH
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
308 PM EDT THU AUG 5 2004
.SHORT TERM (TONIGHT THROUGH SUNDAY NIGHT)...
CLEARING NW PIEDMONT AND N FOOTHILLS FROM WATCH AS COOLER AIR MOVING
INTO REGION.
COLD FRONT MOVING THROUGH AREA LATE THIS AFTERNOON. HOLDING
CHANCE POPS THROUGH 02Z...THEN SLIGHT CHANCE I-77 AND TN LINE MID
EVENING AS CONECTIVE BAND EXITS AND MOIST NW FLOW SETS UP IN MTS.
TIGHT GRADIENT TO KEEP WIND UP THROUGH SAT NIGHT. DRYING LATE TONIGHT
AND FRI...WITH SKIES MOSTLY CLEAR THROUGH SUN. COLD ADVECTION TO
OVERWHELM DOWNSLOPE FRI...RESULTING IN BELOW NORMAL TEMPERATURES.
NEAR RECORD TEMPERATURES FRI NIGHT IN CONTINUED N FLOW. SAT ABOUT AS
COOL AS FRI AS BOTH COLD ADVECTION AND DOWNSLOPE END. RADIATIONAL
COOLING SAT NIGHT FAVORS NEAR RECORD TEMPERATURES AGAIN. TEMPERATURES
RECOVER SOMEWHAT SUN...BUT STILL BELOW NORMAL...AND WITH DEW POINTS
RISING THOUGH STILL LOW.
&&
.LONG TERM (MONDAY THROUGH THURSDAY)...
PATTERN OVER THE ERN CONUS WL BEGIN TO AMPLY AGAIN ON MON AS ENERGY
RIDES OVER THE WRN CONUS RIDGE AND DIVES INTO THE BACK SIDE OF THE
ERN CONUS LONG WAVE. SHORT WAVE RIDGING WL DEVELOP AHEAD OF THE
DIGGING TROF...WHICH WL HELP TO HOLD SFC HIGH PRESSURE OVER THE
REGION. THE HIGH WL MODIFY CONSIDERABLY FROM IT/S CONTINENTAL POLAR
ORIGINS...BECOMING ESSENTIALLY THE BERMUDA HIGH BY MON. SOME
QUESTION OF THE TIMING OF THE FRONT...WITH THE ECMWF A LITTLE FASTER
THAN THE GFS. WL FOLLOW GFS TIMING AS THIS IS FAVORED BY HPC.
THEREFORE WL REMOVE POPS TUE...AND ADD THEM FOR WED. WL GO DRY THU
AS AMPLIFYING TROUGH SHOULD HAVE PUSHED THE FRONT WELL THROUGH THE
CWFA BY THEN.
&&
.AVIATION...
HAVE CARRIED TEMPO TSRA FOR THE UPSTATE TAF SITES AND CLT THROUGH 20
AND 21 UTC RESPECTIVELY. EXPECT CONVECTION TO FILL IN A LITTLE OVER
THIS AREA THE NEXT COUPLE HOURS. HOWEVER...WITH COLD FRONT AND
ASSOCIATED THICK CLOUD COVER MOVING IN QUICKLY FROM THE WEST...THE
WINDOW OF OPPORTUNITY FOR CONVECTION WON/T EXTEND MUCH BEYOND 21
UTC. THERE IS A LITTLE STRATIFORM PCPN JUST BEHIND THE FRONT...AND
HAVE ACCOUNTED FOR THIS WITH A COUPLE HRS OF SHRA AT AVL AND HKY.
ONCE THE FRONT MOVES THROUGH MUCH DRIER AIR WL BEGIN TO ENTER THE
REGION AND WE SHOULD FINALLY HAVE A MORNING FREE OF MVFR CIGS AND
VSBYS FRI.
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...SEVERE THUNDERSTORM WATCH FOR ZONES GAZ010-017-018-
026-028-029 UNTIL 8 PM EDT.
NC...SEVERE THUNDERSTORM WATCH FOR ZONES NCZ038-068>072-082
UNTIL 8 PM EDT.
SC...SEVERE THUNDERSTORM WATCH FOR ZONES SCZ001>014-019
UNTIL 8 PM EDT.
&&
SHORT TERM...JAT
LONG TERM/AVIATION...BPMHazardous weather outlook, Aug 5, 5:35 AM EDT, 10 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 535 AM EDT THU AUG 5 2004 GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-060930- 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- 535 AM EDT THU AUG 5 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA... UPSTATE SOUTH CAROLINA...AND EXTREME NORTHEAST GEORGIA. .DAY ONE... A COLD FRONT WILL PUSH THROUGH THE WESTERN CAROLINAS AND NORTHEAST GEORGIA TODAY. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO ACCOMPANY THE FRONT AS IT MOVES EAST. SOME OF THESE STORMS MAY BECOME STRONG ENOUGH TO PRODUCE STRONG WINDS AND HAIL THIS AFTERNOON. AREAS ACROSS THE NORTH CAROLINA FOOTHILLS AND PIEDMONT WOULD HAVE THE BEST CHANCES FOR SEVERE WEATHER THIS AFTERNOON. .DAYS TWO THROUGH SEVEN... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON. NED
In the hours before
Special weather statement, Aug 5, 3:07 PM EDT, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 307 PM EDT THU AUG 5 2004 NCZ035>037-056-057-052001- ALEXANDER NC-CATAWBA NC-DAVIE NC-IREDELL NC-ROWAN NC- 307 PM EDT THU AUG 5 2004 ...ALEXANDER...CATAWBA...DAVIE...IREDELL AND ROWAN COUNTIES CLEARED FROM SEVERE THUNDERSTORM WATCH... A COLD FRONT HAS MOVED SOUTH OF THE NORTHERN FOOTHILLS AND NORTHWEST PIEDMONT...BRINGING COOLER AIR INTO THE REGION. ALEXANDER...CATAWBA...DAVIE...IREDELL AND ROWAN COUNTIES HAVE BEEN CLEARED FROM THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT THIS AFTERNOON AND EARLY EVENING. THE REMAINDER OF THE WATCH REMAINS VALID UNTIL 8 PM EDT. STAY TUNED TO NOAA WEATHER RADIO OR THE MEDIA FOR THE LATEST WEATHER INFORMATION. 07
Nearby
Severe Thunderstorm Warnings in North 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.