Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 492, NWS Greenville-Spartanburg, SC

July 28, 2012Chester County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 28, 2012, 8:17 PM EDT for Chester County, South Carolina. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 28, 2012, 8:17 PM EDT (00:17 UTC)
Expired
Jul 28, 2012, 8:45 PM EDT
In force
28 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

County Chester County, SC

The radar

The Columbia radar (KCAE), 83 km from the middle of the area, began a volume at 00:19 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.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.3 hours before the alert went out and 192 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.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2012-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 846 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2012-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
846 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1942 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

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 Jul 28, 8:02 PM EDT, 15 minutes earlier.

Area forecast discussion, Jul 28, 8:02 PM EDT, 15 minutes before
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Hazardous weather outlook, Jul 28, 2:42 PM EDT, 5 hours 35 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
242 PM EDT SAT JUL 28 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-291930-
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-
242 PM EDT SAT JUL 28 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.

THUNDERSTORMS ARE IN THE FORECAST THIS AFTERNOON THROUGH EARLY THIS
EVENING. SOME OF THESE STORMS ARE EXPECTED TO BECOME SEVERE...WITH
DAMAGING WIND GUSTS BEING THE PRIMARY THREAT. HOWEVER...A FEW OF
THE STRONGEST STORMS COULD PRODUCE A BRIEF PERIOD OF LARGE HAIL.
FREQUENT CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY RAINFALL WILL
BE POSSIBLE WITH ANY THUNDERSTORM.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

07

In the hours before

Special weather statement, Jul 28, 4:51 PM EDT, 3 hours 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
451 PM EDT SAT JUL 28 2012

NCZ068>070-282130-
CLEVELAND-GASTON-LINCOLN-
451 PM EDT SAT JUL 28 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN CLEVELAND...GASTON AND
LINCOLN COUNTIES THROUGH 530 PM EDT...

AT 447 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CHERRYVILLE...OR 8 MILES SOUTHWEST OF
LINCOLNTON...MOVING SOUTHEAST AT 30 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO MOUNTAIN
  ISLAND LAKE...WACO...STANLEY...RANLO...MOUNT HOLLY...MCADENVILLE...
  LUCIA...LOWESVILLE...LOWELL...LINCOLNTON...IRON STATION...HIGH
  SHOALS...GASTONIA...DALLAS...CROUSE...CRAMERTON...CHERRYVILLE...
  BOGER CITY...BESSEMER CITY AND BELMONT.

WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE EXPECTED WITH THIS
STORM.

LAT...LON 3536 8092 3534 8099 3533 8098 3528 8101
      3517 8100 3515 8102 3515 8111 3535 8148
      3536 8148 3553 8136 3545 8095 3539 8096
      3537 8098 3537 8096

07
Special weather statement, Jul 28, 5:16 PM EDT, 3 hours 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
516 PM EDT SAT JUL 28 2012

NCZ035-036-282200-
ALEXANDER-IREDELL-
516 PM EDT SAT JUL 28 2012

...A STRONG THUNDERSTORM WILL AFFECT ALEXANDER AND CENTRAL IREDELL
COUNTIES THROUGH 600 PM EDT...

AT 513 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR TAYLORSVILLE...MOVING EAST AT 20 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO
  TURNERSBURG...TAYLORSVILLE...STONY POINT...STATESVILLE...SCOTTS...
  MILLERSVILLE...LOVE VALLEY...HIDDENITE...HARMONY AND ELLENDALE.

SMALL HAIL...WIND GUSTS OF 40 TO 50 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

LAT...LON 3596 8072 3572 8081 3589 8131 3603 8126
      3604 8121 3604 8115

07
Local storm report, Jul 28, 5:38 PM EDT, 2 hours 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
538 PM EDT SAT JUL 28 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0434 PM     HAIL             3 ENE FALLSTON          35.44N 81.44W
07/28/2012  E1.00 INCH       LINCOLN            NC   911 CALL CENTER

            QUARTER SIZED HAIL AT THE EAST END OF PARKER FARM ROAD.

0434 PM     TSTM WND DMG     3 ENE FALLSTON          35.44N 81.44W
07/28/2012                   LINCOLN            NC   911 CALL CENTER

            A TREE BLOWN DOWN AT THE EAST END OF PARKER FARM ROAD.

&&

OUTLAW
Special weather statement, Jul 28, 6:02 PM EDT, 2 hours 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
602 PM EDT SAT JUL 28 2012

SCZ007-282230-
SPARTANBURG-
602 PM EDT SAT JUL 28 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN SPARTANBURG COUNTY
THROUGH 630 PM EDT...

AT 559 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CAMPOBELLO...OR 11 MILES SOUTHEAST OF
COLUMBUS...MOVING EAST AT 10 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  LAKE BOWEN...
  BOILING SPRINGS SC...

WIND GUSTS OF 40 TO 50 MPH...AND TORRENTIAL RAIN ARE EXPECTED WITH
THIS STORM.

LAKE BOWEN IS IN THE PATH OF THIS STORM. CLOUD TO GROUND
LIGHTNING AND GUSTY WINDS WILL CREATE DANGEROUS BOATING CONDITIONS.
MOVE TO SHORE IMMEDIATELY.

LAT...LON 3503 8222 3513 8222 3520 8220 3519 8206
      3516 8186 3515 8186 3494 8193

ARK
Special weather statement, Jul 28, 7:31 PM EDT, 46 minutes before
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Special weather statement, Jul 28, 8:08 PM EDT, 9 minutes before
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The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 28, 9:37 PM EDTSpecial Weather StatementGSPUnion38 min
Jul 28, 8:08 PM EDTSpecial Weather StatementGSPChester52 min
Jul 28, 9:04 PM EDTSpecial Weather StatementGSPChester41 min

Nearby

Severe Thunderstorm Warnings in South 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.