Alert archive / North Carolina / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 521, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 10, 2006, 3:28 PM EDT for Transylvania County, North Carolina; Pickens County, South Carolina. It was in force for 62 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 10, 2006, 3:28 PM EDT (19:28 UTC)
- Expired
- Aug 10, 2006, 4:30 PM EDT
- In force
- 62 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Counties, with a storm outline in the text
Counties Transylvania County, NC, Pickens County, SC
The radar
The Greer radar (KGSP), 54 km from the middle of the area, began a volume at 19:31 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 |
|---|---|---|---|
| Aug 10, 3:36 PM EDT | HAIL 0.75 | 1 S Rosman, NC | COOP OBSERVER JUST SOUTH OF ROSMAN REPORTED PENNY SIZED HAIL THAT LASTED FOR ABOUT 5 MINUTES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.5 hours before the alert went out and 249 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
- 155 J/kg
- Mixed-layer CIN
- -159 J/kg
- Mixed-layer LCL
- 1270 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- -13 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 101927 SVRGSP NCC175-SCC077-102030- /O.NEW.KGSP.SV.W.0521.060810T1928Z-060810T2030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 328 PM EDT THU AUG 10 2006 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN TRANSYLVANIA COUNTY IN WESTERN NORTH CAROLINA NORTHERN PICKENS COUNTY IN UPSTATE SOUTH CAROLINA * UNTIL 430 PM EDT * AT 324 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 3 MILES SOUTHEAST OF ROSMAN...OR ABOUT 10 MILES SOUTH OF BREVARD. THIS STORM WAS NEARLY STATIONARY. * THE SEVERE THUNDERSTORM WILL BE NEAR... ROCKY BOTTOM BY 405 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. SEEK SHELTER INDOORS AWAY FROM WINDOWS AND DOORS UNTIL THE STORM PASSES. TO REPORT DAMAGING WINDS...LARGE HAIL...OR FLOODING...THROUGH OUR AUTOMATED REPORTING SYSTEM...CALL OUR TOLL FREE NUMBER... 1 8 7 7...6 3 3...6 7 7 2. LAT...LON 3522 8274 3514 8294 3486 8284 3497 8254 $$ SBK/RWH
2 follow-up statements
000 WWUS52 KGSP 101959 SVSGSP SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 358 PM EDT THU AUG 10 2006 NCC175-SCC077-102030- /O.CON.KGSP.SV.W.0521.000000T0000Z-060810T2030Z/ TRANSYLVANIA NC-PICKENS SC- 358 PM EDT THU AUG 10 2006 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT FOR NORTHERN PICKENS AND SOUTHERN TRANSYLVANIA COUNTIES... AT 354 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ROCKY BOTTOM...OR ABOUT 12 MILES SOUTH OF BREVARD... MOVING SOUTHEAST AT 5 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... 6 MILES WEST OF PUMPKINTOWN BY 430 PM EDT... THIS SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED BECAUSE BRIEF PERIODS OF DAMAGING WINDS AND...OR LARGE HAIL ARE EXPECTED OVER SMALL AREAS. THIS STORM WAS ALSO CAUSING INTENSE LIGHTNING AND TORRENTIAL RAINFALL. SEEK SHELTER INDOORS UNTIL THE STORM PASSES. LAT...LON 3522 8274 3514 8294 3486 8284 3497 8254 $$ SBK/RWH
000 WWUS52 KGSP 102034 SVSGSP SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 434 PM EDT THU AUG 10 2006 NCC175-SCC077-102044- /O.EXP.KGSP.SV.W.0521.000000T0000Z-060810T2030Z/ TRANSYLVANIA NC-PICKENS SC- 434 PM EDT THU AUG 10 2006 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN PICKENS AND SOUTHERN TRANSYLVANIA COUNTIES HAS EXPIRED... THE STORM THAT PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LEVELS. LAT...LON 3522 8274 3514 8294 3486 8284 3497 8254 $$ SBK/RWH
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 10, 2:55 PM EDT, 33 minutes earlier.
Area forecast discussion, Aug 10, 2:55 PM EDT, 33 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 255 PM EDT THU AUG 10 2006 .SHORT TERM /TONIGHT THROUGH FRIDAY/... ANOTHER AFTERNOON AND EVENING FEATURING SCATTERED TSTM CVRG. LITTLE CHANGE FROM EARLIER THINKING OF AN ISOLATED WET MICROBURST THREAT. MUCH LESS EVIDENCE EXISTS TONIGHT FOR SHOWER AND THUNDERSTORM CHANCES TO LAST PAST LATE EVENING GIVEN WESTERLY LLVL FLOW. DEEPER LAYER RH DOES SLIP SE TOWARD THE NC MTNS LATE TONIGHT WITHIN POTENTIAL MCS TRACK...BUT BASED ON THE WEAK MAGNITUDE OF 85H WINDS THIS FAR EAST...WOULD DOUBT STORMS OF ANY SIGNIFICANCE WOULD THREATEN THE NC MTNS...BUT WILL LEAVE SMALL POPS IN ALL NIGHT IN THE WEST TO ACCOUNT FOR SHOWER POTENTIAL. AS STRONGER ENERGY TRANSLATES SOUTHEAST ALONG STALLED FRONTAL ZONE ON FRIDAY...SHORT RANGE MODELS ARE IN GOOD AGREEMENT WITH CONSIDERABLE DEEP CONVECTIVE RESPONSE. BASED ON THIS WILL BUMP UP PCPN CHANCES TO LIKELY EVERYWHERE. THE COMBINATION OF DEVELOPING WAVES ALONG LLVL BNDRY AND 30 KT MID-LVL FLOW SHAPING UP FOR A SUBSTANTIAL INCREASE IN STORM RELATIVE SHEAR FRIDAY AFTERNOON LEADING TO THE THREAT OF ORGANIZED SVR TSTMS. && .LONG TERM /FRIDAY NIGHT THROUGH THURSDAY/... FRI NGHT THRU SUN... EXPECT THAT MOST OF THE FORECAST AREA WILL HAVE BEEN WORKED OVER BY CONVECTION BY 00 UTC SAT...WITH SEVERE THREAT RAPIDLY DIMINISHING AFTER THAT TIME. COLD AIR DAMMING WILL BECOME MORE ESTABLISHED DURING THE NIGHTTIME HOURS...AND LIGHT TO MODERATE UPSLOPE INDUCED SHOWERS SHOULD BECOME QUITE NUMEROUS ALONG THE ESCARPMENT AND THE FOOTHILLS OF NORTH CAROLINA AFTER MIDNIGHT. THE WRF IS MUCH SLOWER WITH THE SYNOPTIC SCALE FEATURES FRIDAY NIGHT THROUGH SUNDAY THAN IS THE GFS...AND I/M GOING WITH A COMPROMISE SOLUTION...SIMILAR TO WHAT MOST OF THE SURROUNDING OFFICES ARE DOING AS WELL. THE WRF DEVELOPS A GOOD LOOKING DEFORMATION ZONE JUST NORTH OF THE FORECAST AREA IN THE H7-H5 LAYER BEGINNING FRIDAY EVENING AND LASTING THROUGH ABOUT MID AFTERNOON SATURDAY. THE GFS ALSO HAS A DEFORMATION ZONE...IN ABOUT THE SAME LOCATION...BUT IT SHIFTS EAST OF THE REGION BETWEEN 06 AND 12 UTC SAT. WHILE THERE WILL BE GOOD LLVL UPSLOPE ASSOCIATED WITH THE CAD...THE BEST DEEP LAYER FORCING SHOULD STAY TO OUR NORTH. THEREFORE...EXPECT A GOOD CHANCE OF MEASURABLE PCPN ALONG THE ESCARPMENT...BUT WITH FAIRLY LIGHT QPF. THEREFORE WILL KEEP LIKELY POPS ALONG THE ESCARPMENT THROUGH THE DAY ON SATURDAY. SURFACE CONVERGENCE SHOULD BE FAIR ENOUGH SOUTH TO PUSH SEVERE THREAT WELL SOUTH OF THE FORECAST AREA SAT AFTN. LOWERED MAX TEMPS INTO THE 70S IN THE NC ZONES...WITH A FEW LOWER 80S IN THE SOUTHERN TIER SAT. HOWEVER...THIS IS PROBABLY STILL TOO HIGH. THE WRF KEEPS THE H5 LOW OVER THE REGION THROUGH SUN...WITH A CHANCE OF RAIN THROUGH THE DAY. THIS IS MUCH SLOWER THAN OTHER MODELS...AND I/LL END PCPN CHANCES SATURDAY EVENING AND KEEP SUNDAY DRY. THERE DOES NOT APPEAR TO BE ANY MECHANISM TO DRAIN THE RESIDUAL CAD ON SUNDAY...OTHER THAN EARLY AUGUST SUN...AND I SUSPECT THAT WE WILL HOLD ON TO CLOUDS MUCH LONGER THAN IS IMPLIED IN THE GRIDS. SUN NGHT THRU THU... LITTLE CHANGE TO PREVIOUS THINKING IN THE EXTENDED. DEEP LAYER HIGH PRESSURE WILL KEEP THE REGION DRY WITH NEAR NORMAL TEMPS MON. A WEAK FRONT CROSSES THE REGION ON TUE...BRINGING LOW CHANCE POPS TO THE MTNS...WITH DRY WEATHER FOLLOWING WED AND THU. && .AVIATION... UNTIL DEEP CONVECTIVE COVERAGE CAN BE CONCLUSIVELY DISCERNED...WILL NOT FCST CONDITIONS WORSE THAN VCTS/CB THIS UNTIL ABOUT MID-EVENING. DESPITE WESTERLY FLOW OVERNIGHT...WILL PLAN ON MVFR VSBY DEVELOPING AT ALL TERMINALS...WITH TEMPO IFR AT KAVL. PRETTY SOLID SHOWER/TSTM CVRG LOOKS TO OVERSPREAD THE REGION BY MIDDAY TO EARLY AFTERNOON FRIDAY...AND WILL INTRODUCE VCSH CHANCES FOR KAVL/KHKY IN THE OUTLOOK PERIOD WHERE DEEP LAYER RH ARRIVES FIRST. && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SHORT TERM...CSH LONG TERM...MCAVOY AVIATION...CSH
Hazardous weather outlook, Aug 10, 4:03 AM EDT, 11 hours 25 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 403 AM EDT THU AUG 10 2006 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>014-019-110815- RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER- IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE- CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON- TRANSYLVANIA-HENDERSON-CLEVELAND-LINCOLN-GASTON-MECKLENBURG- CABARRUS-UNION NC-CALDWELL MOUNTAINS-GREATER CALDWELL- BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL- RUTHERFORD MOUNTAINS-GREATER RUTHERFORD-POLK MOUNTAINS- EASTERN POLK-OCONEE MOUNTAINS-PICKENS MOUNTAINS- GREENVILLE MOUNTAINS-GREATER OCONEE-GREATER PICKENS- GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-ANDERSON-ABBEVILLE- LAURENS-UNION SC-CHESTER-GREENWOOD- 403 AM EDT THU AUG 10 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT THERE IS A CHANCE OF MAINLY AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. TORRENTIAL RAIN IS POSSIBLE IN STRONGER STORMS. A FEW STORMS MAY BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A CHANCE OF MAINLY AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL MOST LIKELY NOT BE NEEDED.
In the hours before
Local storm report, Aug 10, 12:29 PM EDT, 2 hours 59 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1229 PM EDT THU AUG 10 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0229 PM TSTM WND DMG 3 NE MONROE 35.02N 80.50W
08/09/2006 UNION NC COUNTY OFFICIAL
SMALL BUSINESS OWNER AND COUNTY OFFICALS REPORT MULTIPLE
TREES DOWN BETWEEN HWY 601 AND MORGAN MILL ROAD.
&&
SKRENTZSpecial weather statement, Aug 10, 2:03 PM EDT, 1 hour 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 203 PM EDT THU AUG 10 2006 SCZ011-101900- ABBEVILLE- 203 PM EDT THU AUG 10 2006 ...A STRONG THUNDERSTORM WAS AFFECTING ABBEVILLE COUNTY... AT 154 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 7 MILES EAST OF LOWNDESVILLE...OR 9 MILES WEST OF ABBEVILLE...MOVING SOUTH AT 5 MPH. THIS STORM IS CAPABLE OF PRODUCING WINDS OF 30 TO 40 MPH AND RAINFALL RATES NEAR ONE INCH PER HOUR. KRENTZ
Special weather statement, Aug 10, 2:27 PM EDT, 1 hour 1 minute before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 227 PM EDT THU AUG 10 2006 SCZ013-101930- UNION- 227 PM EDT THU AUG 10 2006 ...A STRONG THUNDERSTORM WAS AFFECTING UNION COUNTY... AT 224 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 6 MILES NORTHWEST OF WHITMIRE...OR 10 MILES SOUTH OF UNION...REMAINING FAIRLY STATIONARY. THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS OF 30 TO 40 AND HIGH RAINFALL RATES UP TO ONE INCH PER HOUR. KRENTZ
Special weather statement, Aug 10, 2:51 PM EDT, 37 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 251 PM EDT THU AUG 10 2006 SCZ001-004-101945- GREATER OCONEE-OCONEE MOUNTAINS- 251 PM EDT THU AUG 10 2006 ...A STRONG THUNDERSTORM WAS AFFECTING OCONEE COUNTY... AT 248 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR SALEM...OR 7 MILES NORTHEAST OF WALHALLA... MOVING SOUTHEAST AT 5 MPH. SMALL HAIL...AND WINDS 30 TO 40 MPH ARE EXPECTED WITH THIS STORM. ALSO...HIGH RAINFALL RATES ON THE ORDER OF ONE INCH PER HOUR WILL BE ASSOCIATED WITH THIS STORM. SBK
Special weather statement, Aug 10, 3:14 PM EDT, 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 314 PM EDT THU AUG 10 2006 SCZ006-010-102015- ANDERSON-GREATER GREENVILLE- 314 PM EDT THU AUG 10 2006 ...STRONG THUNDERSTORMS WERE AFFECTING ANDERSON AND GREENVILLE COUNTIES... AT 306 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED TWO STRONG THUNDERSTORMS EXTENDED ALONG A LINE FROM GREENVILLE TO POWDERSVILLE...OR ALONG A LINE EXTENDING FROM GREENVILLE TO 10 MILES SOUTHWEST OF GREENVILLE...MOVING SOUTHEAST AT 8 MPH. THESE STORMS WILL BE NEAR... MAULDIN BY 325 PM EDT. PIEDMONT BY 335 PM EDT. WILLIAMSTON BY 350 PM EDT. SIMPSONVILLE BY 355 PM EDT. BELTON BY 400 PM EDT. FOUNTAIN INN BY 415 PM EDT. WINDS OF 30 TO 40 MPH...SMALL HAIL AND HEAVY RAINFALL ARE EXPECTED WITH THESE STORMS. SBK
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 2:33 PM EDT | Severe Thunderstorm Warning | GSP | Union | 57 min |
| Aug 10, 3:38 PM EDT | Severe Thunderstorm Warning | GSP | Greenville | 67 min |
| Aug 10, 4:38 PM EDT | Severe Thunderstorm Warning | GSP | Abbeville, Anderson | 56 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2006Severe Thunderstorm Warnings in South Carolina, 2006Every severe thunderstorm warning in 2006
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.