Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 242, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 25, 2012, 8:16 PM EDT for Polk County, Rutherford County, North Carolina; Cherokee County, Greenville County, Spartanburg County, South Carolina. It was in force for 34 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
- Jun 25, 2012, 8:16 PM EDT (00:16 UTC)
- Expired
- Jun 25, 2012, 8:50 PM EDT
- In force
- 34 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
Counties Polk County, NC, Rutherford County, NC, Cherokee County, SC, Greenville County, SC, Spartanburg County, SC
The radar
The Greer radar (KGSP), 32 km from the middle of the area, began a volume at 00:17 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 00:00Z, 0.3 hours before the alert went out and 218 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
- 297 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 2023 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
095 WUUS52 KGSP 260016 SVRGSP NCC149-161-SCC021-045-083-260115- /O.NEW.KGSP.SV.W.0242.120626T0016Z-120626T0115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 816 PM EDT MON JUN 25 2012 THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN POLK COUNTY IN WESTERN NORTH CAROLINA... SOUTH CENTRAL RUTHERFORD COUNTY IN WESTERN NORTH CAROLINA... NORTHWESTERN CHEROKEE COUNTY IN UPSTATE SOUTH CAROLINA... NORTHEASTERN GREENVILLE COUNTY IN UPSTATE SOUTH CAROLINA... NORTHERN SPARTANBURG COUNTY IN UPSTATE SOUTH CAROLINA... * UNTIL 915 PM EDT * AT 814 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 FOREST CITY...OR 6 MILES SOUTHEAST OF RUTHERFORDTON...AND MOVING SOUTHWEST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR... CHESNEE. LAKE BOWEN AND BOILING SPRINGS SC. PRECAUTIONARY/PREPAREDNESS ACTIONS... BRIEF DAMAGING WINDS WILL BLOW DOWN TREES AND POWER LINES OVER SMALL AREAS. A BRIEF PERIOD OF LARGE HAIL IS ALSO POSSIBLE. SEEK SHELTER INSIDE AN INTERIOR ROOM. TO REPORT DAMAGING WINDS...HAIL...OR FLOODING THROUGH OUR AUTOMATED REPORTING SYSTEM...CALL TOLL FREE...1 8 7 7...6 3 3...6 7 7 2. && LAT...LON 3489 8193 3505 8229 3539 8201 3526 8174 TIME...MOT...LOC 0015Z 028DEG 11KT 3528 8190 $$ JPT
1 follow-up statement
903 WWUS52 KGSP 260050 SVSGSP SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 850 PM EDT MON JUN 25 2012 NCC149-161-SCC021-045-083-260059- /O.CAN.KGSP.SV.W.0242.000000T0000Z-120626T0115Z/ CHEROKEE SC-SPARTANBURG SC-POLK NC-RUTHERFORD NC-GREENVILLE SC- 850 PM EDT MON JUN 25 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GREENVILLE... SOUTH CENTRAL RUTHERFORD...SOUTHEASTERN POLK...NORTHERN SPARTANBURG AND NORTHWESTERN CHEROKEE COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LEVELS. HOWEVER GUSTY WINDS AND HEAVY DOWNPOURS ARE STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 3489 8193 3505 8229 3539 8201 3526 8174 TIME...MOT...LOC 0049Z 034DEG 14KT 3517 8203 $$ JPT
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 Jun 25, 8:00 PM EDT, 16 minutes earlier.
Area forecast discussion, Jun 25, 8:00 PM EDT, 16 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 800 PM EDT MON JUN 25 2012 .SYNOPSIS... CANADIAN HIGH PRESSURE WILL BUILD INTO THE REGION FOLLOWING THE COLD FRONT PASSAGE...KEEPING TROPICAL STORM DEBBY TO THE SOUTH OF THE AREA THROUGH LATE WEEK. STRONGER HIGH PRESSURE WILL THEN BUILD IN FROM THE WEST...BRINGING A STRONG WARMING TREND AND WELL ABOVE AVERAGE TEMPS BY THUR. && .NEAR TERM /THROUGH TUESDAY/... AT OF 755 PM EDT...MESO ANALYSIS DATA CONTINUES TO INDICATE THAT PART OF THE WAVY SFC BOUNDARY CLOSEST TO OUR FORECAST AREA (FA) WAS LOCATED NORTH OF THE NC AND SC STATE LINE. INDEED ENOUGH CONVERGENCE IS INTERACTING WITH SBCAPES FROM 1000-1500 J/KG...AND DECENT DCAPE YET...FOR ADDITIONAL NEW CONVECTIVE FORMATION. SEE NO REASON WHY THIS WILL NOT CONTINUE UNTIL NOCTURNAL COOLING STARTS STABILIZATION PROCESS. AS A RESULT POPS WILL BE GRADUALLY TRENDING DOWNWARD AFTER SUNSET ... THROUGH 06Z...WITH SLIGHT CHANCE STILL HANGING ON IN OUR SOUTHERN SECTIONS. ONCE AGAIN BLOW OFF HIGH CLOUDS FROM CONVECTIVE DEBRIS OF DEBBY IS MAKING A RUN UP INTO OUR AREA...SO CLOUD FORECAST AJUSTED SLIGHTLY. HAD TO MAKE A FEW CHANGES ON OUR NEAR TERM WIND FORECAST TO FIND CLOSEST COMBINATION OF MODEL OUTPUT WHICH "MIRROR'S BEST" THE LATEST OBSERVATIONAL DATA...THEN EXTEND THAT OUT IN TIME. EARLIER NEAR TERM DISCUSSION BELOW. AS OF 440 PM EDT...DECIDED TO STICK WITH THE IDEA OF CONVECTION TRYING TO DEVELOP ALONG AN AXIS OF HIGH SBCAPE AND HIGH DCAPE VALUES ACROSS THE SOUTHERN...CENTRAL AND EASTERN SECTIONS OF OUR FORECAST AREA (FA) INTO THE EVENING. WHAT APPEARS TO BE LACKING IS STRONGER SFC CONVERGENCE!. HOWEVER WITH THE WEAK WIND SHIFT DROPPING THROUGH THE REGION...COUPLED WITH TAIL END OF A S/W PIVOTING INTO THE MID ATLANTIC...WE STILL COULD ACTIVATE THINGS UNTIL EARLY EVENING. TEMPERATURES APPEAR TO BE ON TARGET. EARLIER DISUSSSION...NOT MUCH UPPER FORCING THRU THIS EVE BUT FCST AREA REMAINS SOMEWHAT UNSTABLE WITH CAPE VALUES OVER 1000 J/KG EXPECTED OVER THE SE CWA AHEAD OF APPROACHING COLD FRONT. BEST SHEAR WILL BE E OF CWA BUT THERE IS STILL A CHC OF TSTMS SO HELD ON TO SCT COVERAGE INTO THIS EVE...MAINLY SE ZONES. ANY CONVECTION THAT DOES GET GOING WILL TAPER OFF WITH COOLING AND SKIES WILL CLEAR OVERNIGHT BEHIND WEAK FRONT. MRNG LOWS WILL COOL A FEW DEG BELOW AVG. COOL...DRY HIGH PRES WILL BUILD INTO THE AREA FROM THE N TUE. EXPECT MCLR SKIES WITH HI TEMPS 5-7 DEG BELOW AVG. && .SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/... AS OF 155 PM MONDAY...AN UNUSUALLY TRANQUIL/CONVECTION-FREE SHORT TERM PERIOD IS STILL ANTICIPATED. HIGH PRESSURE OF CANADIAN ORIGIN WILL SETTLE OVER THE AREA ON WED AND REMAIN IN CONTROL OF THE WEATHER THROUGH THU. UNSEASONABLY LOW DEWPOINTS IN THE 40S WILL CONTINUE WED AND GRADUALLY RISE INTO THE 50S ON THU. THIS TRANSLATES INTO RH'S NEAR 25% WED AFTERNOON OUTSIDE THE MOUNTAINS AND 30-35% MOST MOUNTAINA AREAS. THE UPPER HIGH TO THE WEST WILL GRADUALLY BUILD EASTWARD...SO TEMPS WILL BE ON THE INCREASE. EXPECT MAX TEMPS NEAR CLIMO ON WED...INCREASING TO A COUPLE CATEGORIES ABOVE CLIMO ON THU. MIN TEMPS BELOW AVE TUE NIGHT WILL INCREASE TO NEAR CLIMO WED NIGHT. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... AS OF 200 PM MONDAY...THE BIG STORY IN THE MEDIUM RANGE WILL BE A BUILD UP OF HEAT ACROSS THE WESTERN CAROLINAS AND NE GA AS THE UPPER HIGH PRODUCING THE SWELTERING TEMPS ACROSS PARTS OF THE MID SECTION OF THE COUNTRY CONTINUES TO RIDGE EASTWARD INTO THE AREA THROUGH LATE WEEK. THIS WILL ALLOW TEMPS TO RISE TO NEAR 100 OR INTO THE LOW 100'S BOTH FRI AND SAT OUTSIDE THE MOUNTAINS. ALSO...THESE TWO DAYS WILL SEE LITTLE CHANCE OF ANY DIURANL CONVECTION...EXCEPT PERHAPS SAT AFTERNOON OVER THE FAVORED MOUNTAIN AREAS. SOME CONSENSUS SEEMS TO BE DEVELOPING IN THE MEDIUM RANGE GUIDANCE TO EVENTUALLY MOVE TS DEBBY THROUGH NORTH FLORIDA AND INTO THE ATLANTIC NEAR THE SE COAST BY LATE WEEKEND. EVEN THOUGH IT APPEARS THAT THERE WILL NOT BE ANY DIRECT IMPACTS TO OUR AREA...IT WILL SERVE TO BREAK DOWN THE HIGH OVER THE AREA AND TO ALLOW FOR AT LEAST DIURNAL AFTERNOON CONVECTION TO OCCUR EACH DAY. TEMPS WILL ALSO MODERATE SOME SUN AND MON...BUT STILL REMAIN A COUPLE CATEGORIES ABOVE AVERAGE. STAYED CLOSE TO HPC GUIDANCE... EXCEPT MIN TEMPS LOOK TO BE AT LEAST A CATEGORY TOO HIGH BASED ON PAST HEAT WAVES...SO LOWERED MINS USING ADJMEN (ENSEMBLE) NUMBERS. && .AVIATION /00Z TUESDAY THROUGH SATURDAY/... AT KCLT AND ELSEWHERE...A RANDOM SHOWER OR TSTM STILL POSSIBLE EARLY THIS EVENING...BUT COVERAGE SO LOW WE HAVE KEPT ALL AIRFIELDS DRY... WITH NO RESTRICTION TO VISIBILITIES. WILL CONTINUE TO MONITOR FOR ANY SHORT-FUSED NEEDED CHANGES. A COLD FRONT WILL GRADUALLY OOZE SOUTH ACROSS THE SITES OVERNIGHT... WHILE HIGH CLOUDINESS...RESULTING FROM BLOW-OFF CONVECTION...EXTENDS INTO PARTS OF OUR SC SITES AT LEAST. AS HIGH PRESSURE EDGES EVER SO SLOWLY INTO THE REGION IN THE WEE HOURS WINDS WILL FRESHEN A BIT FROM THE N-NE AND CONTINUE THROUGH TUESDAY. OUTLOOK...DRY HIGH PRESSURE TUE-FRI....WITH A SLIGHT CHC OF TSTMS OVER MTN RIDGES FRI AFTN. 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 && .GSP WATCHES/WARNINGS/ADVISORIES... GA...NONE. NC...NONE. SC...NONE. && SYNOPSIS...WINESETT NEAR TERM...RB/STUREY SHORT TERM...LG LONG TERM...LG AVIATION...RB/STUREY
Hazardous weather outlook, Jun 25, 3:13 PM EDT, 5 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 313 PM EDT MON JUN 25 2012 GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065- 068>072-082-501>510-SCZ001>014-019-261915- 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- 313 PM EDT MON JUN 25 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. WIDELY SCATTERED TO SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE REGION THIS AFTERNOON IN ADVANCE OF A COLD FRONT. THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING LOCALIZED DAMAGING WIND GUSTS AND A BRIEF PERIOD OF LARGE HAIL. ANY SEVERE WEATHER IS MOST LIKELY IN THE PIEDMONT LATE THIS AFTERNOON AND THIS EVENING. LOCALIZED HEAVY RAINFALL AND FREQUENT CLOUD TO GROUND LIGHTNING WILL ALSO BE POSSIBLE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE.
In the hours before
Special weather statement, Jun 25, 5:35 PM EDT, 2 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 535 PM EDT MON JUN 25 2012 SCZ001-002-004-005-010-252215- ANDERSON-GREATER OCONEE-GREATER PICKENS-OCONEE MOUNTAINS-PICKENS MOUNTAINS- 535 PM EDT MON JUN 25 2012 ...A STRONG THUNDERSTORM WILL AFFECT EASTERN OCONEE...NORTHWESTERN ANDERSON AND PICKENS COUNTIES THROUGH 615 PM EDT... AT 534 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR PICKENS...MOVING SOUTHWEST AT 15 MPH. THIS STORM WILL IMPACT LOCATIONS NEAR... PICKENS... LIBERTY... NINE TIMES... NORRIS... CENTRAL... WIND GUSTS OF 30 TO 40 MPH...AND TORRENTIAL RAIN ARE EXPECTED WITH THIS STORM. FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. LAT...LON 3454 8288 3479 8312 3500 8275 3479 8257 JPT
Local storm report, Jun 25, 6:38 PM EDT, 1 hour 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
638 PM EDT MON JUN 25 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0546 PM TSTM WND DMG 2 NW LIBERTY 34.81N 82.72W
06/25/2012 PICKENS SC COUNTY OFFICIAL
SEVERAL TREES DOWN ON GILSTRAP ROAD.
&&
KRENTZSpecial weather statement, Jun 25, 8:05 PM EDT, 11 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
805 PM EDT MON JUN 25 2012
NCZ508-510-SCZ007-008-260045-
CHEROKEE-EASTERN POLK-GREATER RUTHERFORD-SPARTANBURG-
805 PM EDT MON JUN 25 2012
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN SPARTANBURG...
NORTHWESTERN CHEROKEE...SOUTHEASTERN POLK AND SOUTHEASTERN RUTHERFORD
COUNTIES THROUGH 845 PM EDT...
AT 804 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR ALEXANDER MILLS...OR 7 MILES SOUTHEAST OF
RUTHERFORDTON...MOVING SOUTHWEST AT 15 MPH.
THIS STORM WILL IMPACT LOCATIONS NEAR...
CLIFFSIDE...
CHESNEE...
WIND GUSTS OF 30 TO 40 MPH AND HEAVY DOWNPOURS ARE EXPECTED WITH
THIS STORM.
LAT...LON 3532 8172 3519 8176 3498 8186 3513 8218
3543 8196
JPTThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 8:05 PM EDT | Special Weather Statement | GSP | Rutherford | 40 min |
| Jun 25, 9:26 PM EDT | Special Weather Statement | GSP | Anderson | 49 min |
| Jun 25, 10:51 PM EDT | Special Weather Statement | GSP | Anderson | 39 min |
| Jun 26, 12:28 AM EDT | Special Weather Statement | GSP | York | 47 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2012Severe 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.