1 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, 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 the first event at Aug 20, 9:05 PM EST, 25 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1005 PM EDT FRI AUG 20 2004 .SHORT TERM (REST OF TONIGHT)... SLOW MOVING COLD FRONT LOCATED OVER OH RIVER VALLEY. HEIGHTS FALLING AS UPPER RIDGE AXIS MOVES INTO ATLANTIC. UPDATING TO REMOVE HEADLINE FOR SEVERE THUNDERSTORMS WATCH WHICH EXPIRED AT 1000 PM EDT. MADE MINNOR ADJUSTMENTS TO POP/WINDS AND TEMPS. && .PREVIOUS DISCUSSION... THE FOLLOWING WAS ORIGINALLY ISSUED AT 900 PM EDT FRI AUG 20 2004 SHORT TERM (REST OF TONIGHT)... UPDATING TO INCREASE POPS IN NC MTS AND UPPER SAVANNAH RIVER VALLEY PER RADAR TRENDS. INCREASED CLOUD COVER PER SATELLITE IMAGERY. TEMPERATURES AND DEW POINTS GENERALLY APPEAR IN ORDER. THE FOLLOWING WAS ORIGINALLY ISSUED AT 456 PM EDT FRI AUG 20 2004 SHORT TERM (REST OF TONIGHT)... UPDAINT FOR SEVERE THUNDERSTORMS WATCH IN SWAIN...GRAHAM AND MACON COUNTIES UNTI 02Z. CONVECTION RACING INTO KCHA AREA OF E TN EXPECTED TO ARRIVE SW NC WITHIN TWO TO THREE HOURS. THE FOLLOWING WAS ORIGINALLY ISSUED AT 303 PM EDT FRI AUG 20 2004 SHORT TERM (TONIGHT THROUGH MONDAY)... CONVECTIVE MASS AHEAD ON THE FRONTAL LOW CURRENTLY SWINGING NE ACROSS EASTERN TN ATTM. ISO SH HAVE DEVELOPED OVER THE NC MTNS THIS AFTERNOON. COVERAGE OF SH/TS SHOULD CONTINUE TO INCREASE THIS AFTERNOON AND EARLY EVENING AS ENVIRONMENT BECOME MORE UNSTABLE. WILL COVER WITH CHC POPS EAST OF I-85 THROUGH THIS EVENING. WITH THE LOSS OF HEATING AND LOW MOVING FURTHER NE...CONVECTION SHOULD BECOME MORE ASSOCIATED WITH THE FRONTAL POSITION TONIGHT. W TO SW H85 WINDS AHEAD OF THE FRONT INCREASE TO 20 TO 30 KTS AND SHOULD SUPPORT UPSLOPE PRECIP OVERNIGHT. EARLY PERIODS OF THE GFS SHOWING THAT THE MODEL HAS INITIALIZED TOO WET. WILL FAVOR THE ETA SOLUTION OF KEEPING THE PRECIP OVER THE MTNS AND ISO TO SCT EAST OF THE HIGHER TERRAIN. AFTER COORDINATION WITH THE CLUSTER WILL ADVERTISE CATE POPS ALONG THE TN BORDER WITH HIGH CHC TO LIKELY OVER THE REMAINDER OF THE MTNS. EAST OF MTNS...SCT SH AND ISO TS SHOULD ADVANCE TOWARD THE EAST BY DAYBREAK. COLD FRONT WILL SLOWLY MOVE ACROSS THE WESTERN CAROLINAS AND NE GA SAT AFTERNOON AND EVENING. WILL CONTINUE AT LEAST CHC POPS THROUGH 3Z SUN. WITH CAPES APPROACHING 2K J/KG AND HEALTHY WIND FIELDS...SVR WX POTENTIAL WILL BE A CONCERN SAT AFTERNOON. GFS AND ETA SOLUTIONS ARE TRENDING TO MORE OF A CAD PATTERN FOR SUN INTO MON. WILL ADVERTISE STABLE NE BL FLOW FROM SUN AM THROUGH MON AND WILL KEEP MAX TEMPS SLIGHTLY BELOW NORMAL. EXPECT THAT THE PATTERN WILL YIELD LITTLE CHC FOR MEASURABLE PRECIP. HOWEVER...WITH STALLING FRONT WILL GRID SOME SH/TS ACROSS THE SOUTHERN THIRD OF THE FA SUN AFTERNOON. LONG TERM (MONDAY NIGHT THROUGH FRIDAY)... FRONT WILL BE STALLED JUST SOUTH OF THE REGION BY EARLY TUESDAY AS WEAK SHORT WAVES RIDE NORTHEAST THROUGH THE MS RIVER VALLEY. WEAK SRLY RETURN FLOW ALLOWS FAIRLY ABUNDANT SFC TO 850 MB MOISTURE TO PERSIST THROUGH MID WEEK...WITH THE BEST MOISTURE CONVERGENCE IN THE MOUNTAINS. THE ATLANTIC RIDGE GRADUALLY BUILDS WESTWARD TO INCREASE HEIGHTS ACROSS THE REGION...BUT MOISTURE UNDER THE RIDGE PERSISTS TO REQUIRE CHANCE POPS WEST AND SLIGHT CHANCE POPS EAST THROUGH THE PERIOD. AVIATION... HAZE CONTINUES TO RESTRICT VSBY TO MVFR RANGE AT MOST TAF LOCATIONS AND THIS SHOULD ONLY SLOWLY IMPROVE THROUGH EVENING AS MIXING INCREASES. FAIRLY EXPANSIVE SHIELD OF SHOWERS AND THUNDERSTORMS SHOULD ADVANCE SLOWLY TOWARD THE MOUNTAINS...BUT BEST AXIS OF MOISTURE AHEAD OF THE FRONTAL ZONE WILL REMAIN MAINLY WEST OF MOST TERMINAL LOCATIONS UNTIL VERY LATE IN THE CURRENT FORECAST PERIOD. TSRA CHANCES WILL BE HIGHEST AT AVL THROUGH PERIOD...BUT NARROWING THE CHANCES DOWN TO A SMALLER TEMPO WINDOW REMAINS ELUSIVE. MIXING AND HIGHER CLOUDS SHOULD KEEP CIGS ABOVE THE LOW IFR RANGE OBSERVED THIS MORNING...HOWEVER. && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SHORT TERM (UPDATE)...JAT
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 559 AM EDT FRI AUG 20 2004 GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014- 019-211000- 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- 559 AM EDT FRI AUG 20 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA... UPSTATE SOUTH CAROLINA...AND EXTREME NORTHEAST GEORGIA. .DAY ONE... SCATTERED SHOWERS AND THUNDERSTORMS ARE IN THE FORECAST TODAY...MAINLY FOR LATE AFTERNOON AND EARLY EVENING FOR NON-MOUNTAIN AREAS. AN ISOLATED SEVERE STORM OR TWO CANNOT BE RULED OUT. SEE THE LATEST SEVERE WEATHER OUTLOOK FROM GREENVILLE SPARTANBURG...UNDER THE PRODUCT INVENTORY LIST HEADER CAESPSGSP...FOR DETAILS. .DAYS TWO THROUGH SEVEN... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MIGHT BE NEEDED LATER TODAY IF THE ATMOSPHERE BECOMES UNSTABLE ENOUGH. BURRUS
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
934 PM EDT FRI AUG 20 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0915 PM TSTM WND DMG CLARKESVILLE 34.61N 83.52W
08/20/2004 HABERSHAM GA LAW ENFORCEMENT
DISPATCH CENTER HAS RECEIVED MULTIPLE REPORTS OF TREES
AND POWER LINES DOWN ACROSS THE COUNTY. CLARKESVILLE AND
BALDWIN WERE HARDEST HIT BUT OTHER LOCATIONS HAD DAMAGE
AS WELL.
&&
LAMBPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
944 PM EDT FRI AUG 20 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0925 PM TSTM WND DMG CLAYTON 34.88N 83.40W
08/20/2004 RABUN GA LAW ENFORCEMENT
DISPATCHERS REPORTED MULTIPLE TREES AND POWER LINES DOWN
ACROSS THE COUNTY...INCLUDING CITY OF CLAYTON. WIND HAS
SINCE DIED DOWN AT DISPATCH CENTER IN CLAYTON.
&&
LAMBThe Knoxville radar (KMRX), 97 km away, was scanning. The volume nearest the first event began at 02:29 UTC.
1 thunderstorm wind. Local standard time, as filed.
Large tree limbs were blown down. There were also sporadic power outages.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Carolina in 2004Every state in 2004This day in weather historyWarnings in North Carolina, August 2004
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5417624.