Showers and thunderstorms developed along a cold pool and outflow boundary over the Midlands in South Carolina during the late evening hours. Thunderstorms became strong as they entered an unstable atmosphere in Southeast South Carolina featuring MUCAPE between 3000-4000 J/KG, DCAPE between 1000-1500 J/KG, lifted indices between -6 to -7, and favorable low and mid-level lapse rates.
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 episode as NWS CHS wrote it up.
Showers and thunderstorms developed along a cold pool and outflow boundary over the Midlands in South Carolina during the late evening hours. Thunderstorms became strong as they entered an unstable atmosphere in Southeast South Carolina featuring MUCAPE between 3000-4000 J/KG, DCAPE between 1000-1500 J/KG, lifted indices between -6 to -7, and favorable low and mid-level lapse rates.
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 Charleston, SC wrote its last area forecast discussion before the first event at Jun 24, 9:18 PM EST, 0 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHARLESTON SC 1018 PM EDT FRI JUN 24 2011 .SYNOPSIS... THE REGION WILL REMAIN BETWEEN ATLANTIC HIGH PRESSURE AND AN INLAND TROUGH OF LOW PRESSURE THROUGH THE MIDDLE OF NEXT WEEK. && .NEAR TERM /UNTIL 6 AM SATURDAY MORNING/... CONVECTION THAT FORMED FROM WITHIN THE COLD POOL ALOFT PUSHED STEADILY SE FRIDAY EVENING AND COLLIDED WITH THE SEA BREEZE ALONG OUR NW TIER AFTER SUNSET. THIS RESULTED IN A FLARE UP OF SHOWERS/T-STORMS ALONG OUR NW ZONES. HOWEVER...LOSS OF DAYTIME HEATING WITHIN THE NOCTURNAL REGIME COMBINED WITH THE OUTFLOW FROM THIS CONVECTION RUNNING FAR IN ADVANCE OF THE MAIN ACTIVITY SUGGESTS THAT SHOWERS AND T-STORMS ARE RUNNING OUT OF SUPPORT. WE WILL CARRY CHANCE POPS NW OF A LINE FROM JAMESTOWN TO NORTH CHARLESTON...JACKSONBORO AND RIDGELAND IN SC...AND NW OF SPRINGFIELD...CLAXTON AND REIDSVILLE IN GA THROUGH MIDNIGHT OR 1 AM. SLIGHT CHANCE POPS WILL SUFFICE MOST ELSEWHERE...EXCEPT FOR LESS THAN 15 POPS OVER FAR SE SECTIONS OF THE CWFA. DCAPES HAVE FALLEN UNDER 1000 J/KG...SO THE RISK OF ANY SEVERE WIND GUSTS APPEARS TO HAVE ENDED. WE WILL STILL GET SOME NW WIND GUSTS UP NEAR 30 OR PERHAPS 40 MPH WITH THE WIND SHIFT THAT HEADS TOWARD THE SE BEFORE MIDNIGHT. CONVECTIVE DEBRIS CLOUDS WILL MOVE IN FROM THE WEST AND NW EARLY TONIGHT...CHANGING SKIES FROM THE EARLY MOSTLY CLEAR OR PARTLY CLOUDY OVER TO PARTLY OR MOSTLY CLOUDY. BUT WITH TIME LATE TONIGHT THE CONVECTIVE CLOUDS WILL DISSIPATE AS THEY ONLY TRAVEL SO FAR SE...AND CLOUD COVER WITH DIMINISH. HOWEVER...THESE CLOUDS AND THE WARM SW SYNOPTIC FLOW WILL PREVENT TEMPS FROM FALLING ANY LOWER THAN THE LOWER AND MIDDLE 70S INLAND...NOR ANY MORE THAN THE UPPER 70S RIGHT ALONG THE COAST. THERE COULD BE SOME FOG IN AREAS THAT RECEIVED RAINFALL...BUT THAT IS DEPENDENT UPON DEBRIS CLOUDS DISSIPATING ENOUGH. BUT THE COVERAGE/PROBABILITIES ARE NOT ENOUGH TO WARRANT ADDING FOG TO THE FORECAST. && .SHORT TERM /6 AM SATURDAY MORNING THROUGH MONDAY/... FOR THE WEEKEND INTO THE BEGINNING OF NEXT WEEK...THE AREA WILL BE SITUATED BETWEEN ONE UPPER LEVEL RIDGE OVER THE WESTERN ATLANTIC OCEAN AND ANOTHER OVER THE WESTERN GULF COAST AND SOUTHERN PLAINS STATES. VERY WEAK FLOW IN BETWEEN WILL KEEP THE WEATHER PATTERN FAIRLY TYPICAL AND PERSISTENT FOR LATE JUNE. TO BOIL IT DOWN...I EXPECT TO SEE SCATTERED AFTERNOON AND EVENING CONVECTION WITH THE MAIN FOCUSING SURFACE FOCUS MECHANISMS THE SEA BREEZE AND THE LEE TROF. AS PER USUAL...A ISOLATED SEVERE STORM OR TWO CANNOT BE RULED OUT...BUT A SIGNIFICANT SEVERE WEATHER OUTBREAK IS NOT EXPECTED OVER THE NEXT 3 DAYS. WITH HEIGHTS AND LOW LEVEL THICKNESSES NEAR NORMAL...I WILL GO WITH TEMPERATURES NEAR NORMAL FOR THE PERIOD AS WELL...WHICH MEANS HIGHS RANGING FROM THE MID90S WELL INLAND TO THE UPPER 80S AT THE BEACHES AND LOWS NEAR 70 INLAND TO THE MID 70S AT THE BEACHES. THE WIND WILL BE DOMINATED BY THE LAND-SEA BREEZE CIRCULATION IN ABSENCE OF ANY MEANINGFUL SURFACE PRESSURE GRADIENT...SO STRONGEST WINDS SHOULD BE LATE DAY RIGHT ALONG THE BEACH WITH THE ONSHORE PUSH. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... A SLIGHT CHANCE TO CHANCE OF DIURNAL SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE WEEK AS SBCAPE VALUES BETWEEN 2500-3000 J/KG...PWATS BETWEEN 1.5 TO 2.0 INCHES AND AN INLAND MOVING SEABREEZE OCCUR EACH DAY. ACTIVITY WILL LIKELY BEGIN TO INCREASE IN COVERAGE WEDNESDAY AS A WEAK TROUGH DEVELOPS OVER THE REGION FROM THE NORTH AND A SERIES OF WEAK H5 SHORTWAVES PASS THROUGH THE REGION. OVERALL HIGH TEMPS ARE EXPECTED TO BE IN THE LOW/MID 90S THROUGH MID WEEK. TEMPS MAY BE A FEW DEGREES COOLER BY LATE WEEK GIVEN THE ANTICIPATED COVERAGE OF AFTERNOON SHOWERS AND THUNDERSTORMS. SMOKE ISSUES...AS WILDFIRES CONTINUE TO BURN IN SOUTHERN GA...SOUTH/SOUTHWEST WINDS AND AFTERNOON SEA BREEZES WILL CONTINUE THE THREAT FOR LOWER VISIBILITIES AND REDUCED AIR QUALITY THROUGH THE PERIOD...ESPECIALLY DURING THE LATE NIGHT AND MORNING TIME FRAME. && .AVIATION /02Z SATURDAY THROUGH WEDNESDAY/... A BROKEN LINE OF CONVECTION AND ITS ASSOCIATED OUTFLOW WILL TO CONTINUE TO WEAKEN AS IT MOVES EAST AND SE EARLY TONIGHT. THIS WILL RESULT IN A WIND SHIFT TO THE NW WITH GUSTS NEAR 20 KT AT KCHS THROUGH AROUND 0300Z TO 0315Z. WE HAVE INCLUDED CB CLOUDS AND -SHRA...BUT CONDITIONS WILL STILL REMAIN VFR. CONVECTION UPSTREAM FROM KSAV WILL LIKELY DISSIPATE BEFORE REACHING THAT TERMINAL...THUS VFR WEATHER THERE AS WELL. FOR SATURDAY...THE SEA BREEZE LOOKS TO GET ACTIVE WITH CONVECTION...AND WITH BOUNDARY INTERACTIONS WITHIN THE WEST AND NW FLOW ALOFT WE HAVE INCLUDED CB CLOUDS FOR THE LATE AFTERNOON/EVENING HOURS AT BOTH SITES. EXTENDED AVIATION OUTLOOK...IT LOOKS LIKE THE MAIN THREAT FOR MVFR/IFR CONDITIONS WOULD BE WITH ANY AFTERNOON/EVENING CONVECTION THAT DEVELOPS NEAR THE TERMINALS. RECENT RAINS IN SOUTHERN GEORGIA HAVE AT LEAST TEMPORARILY BEAT DOWN THE SMOKE PLUME FROM THE WILDFIRES...SO NO VSBY REDUCTION CONCERNS FOR NOW. OF COURSE...ANY NEW FLARE-UPS WOULD CHANGE THIS THINKING. && .MARINE... A 25-30 KT LOW LEVEL JET WILL CROSS THE AMZ350 WATERS OVERNIGHT...AND ALTHOUGH MIXING WILL BE LIMITED THERE ARE SOME GEOSTROPHIC WINDS UP NEAR 25 KT. THUS WE WILL HOLD ONTO A MARGINAL SCA THROUGH THE NIGHT FOR SW WINDS OF 20-25 KT. SEAS WILL NOT HAVE TIME TO BUILD ANY MORE THAN 4-5 FT. ELSEWHERE ACROSS THE MARINE AREA THE LOW LEVEL WINDS WILL BE A LITTLE LESS...SO WIND SPEEDS WILL BE CAPPED AT 15-20 KT...WITH SEAS NO MORE THAN 3 OR 4 FT. MARINERS SHOULD BE AWARE OF THE CONVECTION UPSTREAM OVER SC AND GA...BUT THE BULK OF THAT WILL FIZZLE BEFORE IMPACTING THE WATERS. INSTEAD...THE GULF STREAM WILL EXPERIENCE SOME DEVELOPMENT THROUGH THE NIGHT...AND GIVEN THE DECENT LOW LEVEL JET THERE COULD BE SOME GUSTY WINDS UP TO 30 KT IN A FEW OF THESE STORMS OVER THE OUTER GA WATERS. WINDS AND SEAS WILL BE BELOW HIGHLIGHT CRITERIA THROUGH THE WEEKEND INTO EARLY NEXT WEEK AS THE COASTAL WATERS WILL BE BETWEEN TWO WEAK AREAS OF HIGH PRESSURE...KEEPING THE GRADIENT QUITE LOW. STRONGEST WINDS WILL BE FELT NEAR THE COAST AS THE AFTERNOON SEA BREEZE MOVES ON SHORE. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...NONE. SC...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 5 AM EDT SATURDAY FOR AMZ350. && 33
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHARLESTON SC 415 AM EDT FRI JUN 24 2011 AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040- 042>045-047>052-250900- CHARLESTON HARBOR- WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM- WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM- WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM...INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY- WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO 60 NM-JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS- INLAND BRYAN-COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG- INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH- ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER- TIDAL BERKELEY- 415 AM EDT FRI JUN 24 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS...SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
850 PM EDT FRI JUN 24 2011
SCZ043>045-250130-
DORCHESTER-INLAND BERKELEY-INLAND COLLETON-
850 PM EDT FRI JUN 24 2011
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF DORCHESTER...BERKELEY
AND COLLETON COUNTIES THROUGH 930 PM EDT...
AT 846 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...8 MILES NORTH OF SMOAKS...MOVING EAST AT 20
MPH.
SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
DORCHESTER...GIVHANS FERRY STATE PARK...HARLEYVILLE...INDIAN FIELD...
REEVESVILLE...SAINT GEORGE AND SMOAKS...
PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
PENNY SIZE HAIL...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HAVE AN ACTION PLAN READY IN THE EVENT THIS STORM STRENGTHENS OR A
WARNING IS ISSUED. CONTINUE TO MONITOR NOAA WEATHER RADIO ALL HAZARDS
FOR THE LATEST WEATHER INFORMATION.
BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.
&&
LAT...LON 3328 8047 3326 8042 3327 8039 3327 8037
3328 8035 3301 8031 3309 8088 3311 8093
3310 8090 3313 8090 3314 8089 3334 8050
TIME...MOT...LOC 0050Z 266DEG 20KT 3319 8083The Charleston,SC radar (KCLX), 90 km away, was scanning. The volume nearest the first event began at 02:18 UTC.
2 thunderstorm wind. Local standard time, as filed.
The public reported half a dozen trees down in Azalea Park in Summerville.
Broadcast media reported several trees down in the Carlton Place Subdivision.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2011Every state in 2011This day in weather historyWarnings in South Carolina, June 2011
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: 328554, 328558.