Alert archive / North Carolina / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 578, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Oct 18, 2012, 7:10 PM EDT for Cleveland County, Gaston County, Lincoln County, North Carolina. It was in force for 32 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
- Oct 18, 2012, 7:10 PM EDT (23:10 UTC)
- Expired
- Oct 18, 2012, 7:42 PM EDT
- In force
- 32 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
Counties Cleveland County, NC, Gaston County, NC, Lincoln County, NC
The radar
The Greer radar (KGSP), 95 km from the middle of the area, began a volume at 23:10 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 |
|---|---|---|---|
| Oct 18, 7:14 PM EDT | HAIL 0.75 | 3 W Cherryville, NC | HAIL LASTED A TOTAL OF NO MORE THAN TWO MINUTES WITH THE LARGEST BEING ABOUT DIME SIZED. ALSO HAD GUSTY WIND WHEN THE STORM ARRIVED BUT NOT STRONG ENOUGH TO BLOW DOWN ANY LIMBS AT THEIR RESIDENCE. |
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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.2 hours before the alert went out and 156 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 602 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
930 WUUS52 KGSP 182310 SVRGSP NCC045-071-109-190015- /O.NEW.KGSP.SV.W.0578.121018T2310Z-121019T0015Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 710 PM EDT THU OCT 18 2012 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CLEVELAND COUNTY IN THE PIEDMONT OF NORTH CAROLINA... NORTHWESTERN GASTON COUNTY IN THE PIEDMONT OF NORTH CAROLINA... WESTERN LINCOLN COUNTY IN THE PIEDMONT OF NORTH CAROLINA... * UNTIL 815 PM EDT * AT 706 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR LAWNDALE...OR 5 MILES NORTH OF SHELBY...AND MOVING NORTHEAST AT 45 MPH. * THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR... CHERRYVILLE. VALE. LINCOLNTON. PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT DAMAGING WINDS...HAIL...OR FLOODING...CALL TOLL FREE...1... 800...2 6 7...8 1 0 1...AND LEAVE A MESSAGE EXPLAINING THE EVENT AND THE APPROXIMATE ADDRESS WHERE IT OCCURRED. && LAT...LON 3557 8150 3555 8110 3526 8152 3539 8168 TIME...MOT...LOC 2310Z 233DEG 38KT 3539 8148 $$ NED
3 follow-up statements
641 WWUS52 KGSP 182323 SVSGSP SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 723 PM EDT THU OCT 18 2012 NCC045-182333- /O.CAN.KGSP.SV.W.0578.000000T0000Z-121019T0015Z/ CLEVELAND NC- 723 PM EDT THU OCT 18 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CLEVELAND COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THIS AREA. LAT...LON 3555 8110 3535 8139 3556 8152 3557 8150 TIME...MOT...LOC 2323Z 233DEG 38KT 3547 8135 $$ NCC071-109-190015- /O.CON.KGSP.SV.W.0578.000000T0000Z-121019T0015Z/ GASTON NC-LINCOLN NC- 723 PM EDT THU OCT 18 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN LINCOLN AND NORTHWESTERN GASTON COUNTIES UNTIL 815 PM EDT... AT 719 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR CHERRYVILLE...OR 8 MILES WEST OF LINCOLNTON...MOVING NORTHEAST AT 45 MPH. THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR... LINCOLNTON. PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT DAMAGING WINDS...HAIL...OR FLOODING...CALL TOLL FREE...1... 800...2 6 7...8 1 0 1...AND LEAVE A MESSAGE EXPLAINING THE EVENT AND THE APPROXIMATE ADDRESS WHERE IT OCCURRED. && LAT...LON 3555 8110 3535 8139 3556 8152 3557 8150 TIME...MOT...LOC 2323Z 233DEG 38KT 3547 8135 $$ NED
599
WWUS52 KGSP 182331
SVSGSP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
731 PM EDT THU OCT 18 2012
NCC071-182338-
/O.CAN.KGSP.SV.W.0578.000000T0000Z-121019T0015Z/
GASTON NC-
731 PM EDT THU OCT 18 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN GASTON COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THIS AREA.
LAT...LON 3556 8133 3555 8110 3542 8130 3542 8137
3557 8143 3556 8136
TIME...MOT...LOC 2328Z 233DEG 38KT 3550 8130
$$
NCC109-190015-
/O.CON.KGSP.SV.W.0578.000000T0000Z-121019T0015Z/
LINCOLN NC-
731 PM EDT THU OCT 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
LINCOLN COUNTY UNTIL 815 PM EDT...
AT 727 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR LINCOLNTON...MOVING NORTHEAST AT 45 MPH.
AT 714 PM EDT...A TRAINED SKYWARN SPOTTER 3 MILES WEST OF
CHERRYVILLE REPORTED DIME SIZED HAIL.
THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
LINCOLNTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT DAMAGING WINDS...HAIL...OR FLOODING...CALL TOLL FREE...1...
800...2 6 7...8 1 0 1...AND LEAVE A MESSAGE EXPLAINING THE EVENT AND
THE APPROXIMATE ADDRESS WHERE IT OCCURRED.
&&
LAT...LON 3556 8133 3555 8110 3542 8130 3542 8137
3557 8143 3556 8136
TIME...MOT...LOC 2328Z 233DEG 38KT 3550 8130
$$
NED609
WWUS52 KGSP 182342
SVSGSP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
742 PM EDT THU OCT 18 2012
NCC109-182352-
/O.CAN.KGSP.SV.W.0578.000000T0000Z-121019T0015Z/
LINCOLN NC-
742 PM EDT THU OCT 18 2012
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN LINCOLN COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THIS AREA.
LAT...LON 3556 8133 3555 8110 3542 8130 3542 8137
3557 8143 3556 8136
TIME...MOT...LOC 2342Z 233DEG 38KT 3559 8115
$$
NEDWhat 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 Oct 18, 5:06 PM EDT, 2 hours 4 minutes earlier.
Area forecast discussion, Oct 18, 5:06 PM EDT, 2 hours 4 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 506 PM EDT THU OCT 18 2012 .SYNOPSIS... A DEEP LOW PRESSURE SYSTEM WILL LINGER TO OUR NORTHWEST AS A COLD FRONT MOVES OFF THE SOUTH CAROLINA COAST ON FRIDAY. DRY HIGH PRESSURE WILL THEN BUILD IN BEHIND THE FRONT OVER THE WEEKEND AND REMAIN IN PLACE WELL INTO NEXT WEEK. && .NEAR TERM /THROUGH FRIDAY/... 2100 UTC UPDATE...NO MAJOR CHANGES NEEDED TO THE FCST. SKY COVER WILL BE TWEAKED TO ACCOUNT FOR STCU DISSIPATING AND REDEVELOPING WHILE GENERALLY SHIFTING EAST. POPS WILL BE LEFT AS IS WITH LOW END CHANCES ACROSS THE FARTHER NW ZONES. RADAR RETURNS AND THE LATEST HRRR SUPPORT A LOW MENTION OVER THE NEXT FEW HRS...ESP ACROSS THE ERN MOST NC COUNTIES. THIS AFTERNOON...STRATUS OVER THE MOUNTAINS AND HIGHER UPSTATE TERRAIN SHOULD GRADUALLY MIX OUT FROM THE EDGES INWARD. SCATTERED CUMULUS WILL LIKELY FILL IN THE AREAS SHORTLY AFTER CLEARING OCCURS. SURFACE FRONT STILL ACROSS THE MID TN VALLEY NOW PRODUCING SOME LIGHT PRECIP WITH A FEW SCATTERED CONVECTIVE CELLS OVER NE TN. THIS IS VERY SIMILAR TO DEPICTION ON 15Z HRRR RUN. THE NE TN ACTIVITY AFFECTS MAINLY THE NRN PORTION OF THE CWA IN THAT DEPICTION WHILE THE LIGHTER MORE STRATIFORM ACTIVITY DOES NOT MAKE IT ACROSS THE MOUNTAINS. THIS SUPPORTS EARLIER DECISION TO KEEP CHANCE POPS IN THE NRN CWA NEAR THE SUPPORT FROM THE UPPER TROUGH. IN THE FAR EASTERN CWA WHERE SKIES CLEARED EARLIER AND THERE HAS BEEN MORE TIME TO DESTABILIZE...PROG SOUNDINGS SHOW 500 J OR SO OF CAPE WHICH WARRANTED A CHC MENTION THERE. DEPENDING ON HOW SOON THE STRATUS CLEAR OUT IN THE WEST AND DESTABILIZATION OCCURS...SUBSEQUENT REVISIONS MAY NEED TO BE MADE TO INCREASE POPS IN THAT AREA. FRONT SHOULD BE EAST OF THE CWA BY MID EVENING AND CLEAR SKIES SHOULD PROGRESS EASTWARD. TEMPS SHOULD BE NEAR NORMAL AS WINDS WILL KEEP THE AREA FROM EXPERIENCING PRIME RADIATIONAL COOLING AND ALSO LIKELY KEEPING FOG AT BAY. SFC DEWPOINTS SHOULD GRADUALLY DROP OVERNIGHT WHICH WILL INHIBIT FOG FORMATION AS WELL. CLEAR SKIES AND COOL AIR ALOFT WILL CAUSE DEEP MIXING ON FRIDAY. THIS WILL ALLOW STRONG WINDS TO MIX DOWN TO THE SURFACE...GENERALLY IN THE 20 TO 25 KT RANGE...BUT SOMEWHAT HIGHER OVER THE MOUNTAINS. && .SHORT TERM /FRIDAY NIGHT THROUGH SATURDAY/... AS OF 200 PM THURSDAY...A DEEP UPPER LOW OVER THE GREAT LAKES WILL BEGIN TO SLOWLY SHIFT NORTHEAST AND REACH NORTHERN NEW ENGLAND ON SUNDAY. MODEL GUIDANCE KEEPS THE DEEPER MOISTURE ASSOCIATED WITH THE LARGE LOW TO THE NORTH OF THE AREA. HENCE...EXCEPT FOR SOME CLOUDS ACROSS THE NC MOUNTAINS FRI NIGHT...GENERALLY CLEAR CONDITIONS ARE ANTICIPATED SAT THROUGH SUN AS SURFACE HIGH PRESSURE GRADUALLY BUILDS EAST OVER THE REGION. MOS GUIDANCE IS RATHER CHILLY OVER THE MOUNTAINS FOR BOTH FRI NIGHT AND SAT NIGHT WITH GENERALLY MID 30S FOR LOWS. THERE MAY BE ENOUGH WIND/CLOUDS FRI NIGHT TO PRECLUDE WIDESPREAD FROST...BUT CONDITIONS SAT NIGHT WILL FAVOR WIDESPREAD FROST AS HIGH PRESSURE SETTLES OVER THE AREA. MAX TEMPS WILL BE NEAR CLIMO PER A MOS BLEND. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... AS OF 215 PM THURSDAY...LOOKS LIKE THE MEDIUM RANGE WILL BE QUIET WITH TEMPS ABOVE CLIMO. ALL THE MEDIUM RANGE MODELS BUILD AN UPPER RIDGE OVER THE EASTERN U.S. THE FIRST PART OF THE NEW WORK WEEK AND IT THEN HOLDS SWAY INTO THE END OF THE WEEK. A BACKDOOR COLD FRONT MAY APPROACH THU PER HPC/GFS GUIDANCE...BUT THE 00Z ECM KEEPS IT WELL NORTH OF THE FORECAST AREA. THEREFORE...EXPECT SURFACE HIGH PRESSURE TO PROVIDE MOSTLY CLEAR CONDITIONS THROUGH THE PERIOD WITH THE AFOREMENTIONED SEASONALLY WARM CONDITIONS. && .AVIATION /21Z THURSDAY THROUGH TUESDAY/... 2100 UTC UPDATE...DIDN/T SEE MUCH REASON TO KEEP TEMPO TS GOING UNTIL 23Z SO REMOVED MENTION. SOME -SHRA ARE DEVELOPING WELL EAST OF THE TERMINAL ALONG A LINE N/S. THE HRRR HAS PREDICTED THIS WELL AND WILL GO WITH A NON/THREAT TSTMS AT KCLT AS ADVERTISED BY THAT MODEL. AT KCLT...LOW VFR CU HAVE RAPIDLY BROKEN OUT NEAR THE AIRFIELD. EXPECT BASES OF THESE CU TO GRADUALLY RAISE THIS AFTERNOON. MODELS STILL NOT THAT CONSISTENT WITH CONVECTIVE CHANCES TODAY...BUT THEY ALL SEEM TO HAVE OVERDONE PRECIP THIS MORNING AROUND THE REGION. THERE IS ENOUGH INSTABILITY FORECAST BY NAM AND RUC MODELS TO WARRANT A TEMPO FOR THUNDER THOUGH CONFIDENCE IS FAIRLY LOW GIVEN THE POOR PERFORMANCE SO FAR TODAY. WINDS WILL GRADUALLY SHIFT TO THE SOUTHWEST WITH FRONTAL PASSAGE TONIGHT. ELSEWHERE...CONVECTIVE CHANCES THIS AFTERNOON WILL BE BEST ACROSS THE NORTHERN AND FAR EASTERN PORTIONS OF THE AREA...THE NORTH BEING NEARER A PASSING SHORTWAVE TROUGH AND THE EAST SEEING THE MOST INSTABILITY AHEAD OF THE APPROACHING COLD FRONT. KHKY LOOKS LIKE THE MOST LIKELY SITE TO BE AFFECTED BY PRECIP/THUNDER...BUT CONFIDENCE IS LOW ENOUGH I WILL ONLY MENTION VCTS. BEHIND THE FRONT SOME CIRRUS WILL REMAIN OVERHEAD INTO TOMORROW WITH UPPER LEVEL LOW STILL SPINNING TO OUR NORTHWEST. CLEAR ENOUGH TONIGHT THAT GOOD RADIATIONAL COOLING SHOULD OCCUR THOUGH WINDS WILL NOT BE ABLE TO CALM COMPLETELY AND WE WILL ALSO SEE MOISTURE DIMINISH AFTER THE FRONTAL PASSAGE...SO NOT ANTICIPATING ANY VSBY RESTRICTIONS DUE TO FOG TONIGHT. OUTLOOK...EXPECT VFR CONDITIONS TO CONTINUE THROUGH THE WEEKEND. THE EXCEPTION WILL BE EARLY MORNING MOUNTAIN VALLEY FOG DURING THAT TIMEFRAME. WINDS MAY GUST TO 20 KT OR MORE AT TIMES OVER THE REGION FRIDAY AFTERNOON. AN EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLE SHOWING THE PERCENTAGE OF GUIDANCE MEMBERS AGREEING WITH THE SCHEDULED ISSUANCE CATEGORY IS AVAILABLE AT FOLLOWING LINK (USE LOWER CASE)... WWW.WEATHER.GOV/GSP/AVIATION/TABLES.HTM && .FIRE WEATHER... MAXIMUM TEMPERATURES IN THE 60S ACROSS THE MTNS AND 70S FOOTHILLS AND PIEDMONT ON FRIDAY WILL COMBINE WITH DRIER DEW POINTS ACROSS THE REGION TO PUSH AFTERNOON RH VALUES DOWN INTO THE 25 TO 30 PERCENT RANGE FRI AFTN. IN ADDITION...BREEZY SW WINDS ARE EXPECTED THROUGH THE DAY WITH OCCASIONAL GUSTS IN THE 25 TO 30 KT RANGE. DEPENDING UPON HOW MUCH RAIN FALLS AHEAD OF THE FRONT PASSING THIS AFTN/EVENING...FUELS COULD BE DRY ENOUGH TO CREATE HEIGHTENED FIRE DANGER IN SOME AREAS FRI AFTN. RAIN CHANCES ARE BEST OVER THE NRN MOUNTAINS AND ERN PIEDMONT. THIS WILL NEED TO BE MONITORED CLOSELY THROUGH THU. && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SYNOPSIS...PAT NEAR TERM...SBK/WIMBERLEY SHORT TERM...LG LONG TERM...LG AVIATION...SBK/WIMBERLEY FIRE WEATHER...
Hazardous weather outlook, Oct 18, 5:24 PM EDT, 1 hour 46 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 524 PM EDT THU OCT 18 2012 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>014-019-192130- 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- 524 PM EDT THU OCT 18 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TONIGHT. A COLD FRONT WILL MOVE THROUGH THE REGION THIS EVENING. AS THE COLD FRONT MOVES ACROSS THE FOOTHILLS AND PIEDMONT A FEW THUNDERSTORMS MAY REDEVELOP BY LATE AFTERNOON AND THEN MOVE TO THE INTERSTATE 77 CORRIDOR DURING THE LATE EVENING HOURS. SOME OF THE STORMS COULD PRODUCE GUSTY GUSTS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE.
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 18, 7:44 PM EDT | Special Weather Statement | GSP | Iredell | 31 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2012Every severe thunderstorm warning in 2012
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.