A few severe thunderstorms in the western CSRA took down some trees.
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 CAE wrote it up.
A few severe thunderstorms in the western CSRA took down some trees.
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 Columbia, SC wrote its last area forecast discussion before the first event at Jul 12, 1:21 PM EST, 1 hour 17 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE COLUMBIA SC 221 PM EDT MON JUL 12 2010 .SYNOPSIS... A HOT AND HUMID AIRMASS WILL REMAIN IN PLACE THROUGH THE END OF THE WEEK. A SERIES OF UPPER WAVES WILL BRING CONTINUED CHANCES OF AFTERNOON AND EVENING THUNDERSTORMS THROUGH THE MID WEEK. && .NEAR TERM /THROUGH TONIGHT/... ANOTHER ROUND OF CONVECTION ALREADY UNDERWAY WITH MORNING CLOUDS HAVING BROKEN...ALLOWING FOR GOOD SURFACE HEATING AND STRONG DESTABILIZATION. CAPE VALUES CURRENTLY EXCEEDING 2500-3000 J/KG ACROSS MUCH OF THE FORECAST AREA...WITH MARGINAL SHEAR VALUES TO SUPPORT ISOLATED SEVERE CONVECTION. PRECIPITABLE WATER VALUES ALREADY OVER 2 INCHES SHOULD SUPPORT WET MICROBURSTS. WEAKLY DIFFLUENT FLOW ALOFT AND WEAK SHORTWAVE ENERGY SHOULD HELP ENHANCE CONVECTION THROUGH THE EVENING HOURS AS IT MOVES ACROSS THE REGION. SPC ALREADY ISSUED A WATCH FOR THE FORECAST AREA WITH DAMAGING WIND THE MAIN THREAT...WITH HAIL A LESSER THREAT. WILL CARRY LIKELY POPS LATE AFTERNOON AND EVENING SPREADING FROM WEST TO EAST AS STORMS PUSH ACROSS THE FORECAST AREA. EXPECT CONVECTIVE DEBRIS CLOUDS AND POSSIBLE STRATUS DEVELOPMENT OVERNIGHT IN THE WAKE OF CONVECTION...WHICH SHOULD HELP MINIMIZE RADIATIONAL COOLING...RESULTING IN OVERNIGHT LOWS IN THE MID 70S. && .SHORT TERM /TUESDAY THROUGH THURSDAY NIGHT/... ANOTHER SHORTWAVE MOVING THROUGH AN AMPLIFYING TROUGH ON TUESDAY WILL INTERACT WITH MODERATE INSTABILITY AND VERY HIGH ATMOSPHERIC MOISTURE...IN THE FORM OF PRECIPITABLE WATER VALUES WELL OVER 2 INCHES. THIS WILL ACT TO INITIATE SCATTERED CONVECTION ACROSS THE FORECAST AREA WITH SOME STORMS POSSIBLY BEING STRONG. SPC CONTINUES TO OUTLOOK THE AREA FOR ISOLATED SEVERE STORMS AS SCATTERED STORMS WILL LIKELY PRODUCE OUTFLOW BOUNDARIES WHICH COULD ALLOW FOR CLUSTERS TO DEVELOP...ENHANCING THE DAMAGING WIND THREAT. WILL CONTINUE WITH HIGH CHANCE POPS TUESDAY AFTERNOON AND EVENING...THEN SLIGHTLY LOWER CHANCE POPS ON WEDNESDAY AND THURSDAY. THE BAND OF ABOVE 2 INCH PRECIPITABLE WATER VALUES WILL REMAIN OVER THE FORECAST AREA THROUGH THIS PERIOD...MEANING AT LEAST ISOLATED TO SCATTERED CONVECTION CAN BE EXPECTED. HIGH TEMPERATURES WILL CONTINUE TO BE IN THE LOWER TO MID 90S WITH OVERNIGHT LOWS IN THE 70S...RESULTING IN HEAT INDEX VALUES NEAR ADVISORY CRITERIA. && .LONG TERM /FRIDAY THROUGH MONDAY/... NOT MANY CHANGES TO THE EXTENDED FORECAST AS MEDIUM RANGE MODELS CONTINUE TO INDICATE A MID LEVEL WEAKNESS OVER THE SOUTHEAST INTO THE MID ATLANTIC AREAS...BETWEEN THE LARGE RIDGE OVER THE DESERT SOUTHWEST AND THE BERMUDA RIDGE OFF THE SOUTHEAST COAST. LINGERING FRONTAL BOUNDARIES...ALTHOUGH WEAK...MAY ALSO PROVIDE SOME ADDITIONAL FOCUSING FOR CONVECTIVE DEVELOPMENT DURING THE EXTENDED FORECAST PERIOD. WILL CONTINUE WITH THE DIURNAL POPS OF LOWER CHANCE POPS DURING THE DAY DIMINISHING TO SLIGHT CHANCE AT NIGHT. PRECIPITABLE WATER VALUES REMAIN QUITE HIGH THROUGH THE PERIOD...IN EXCESS OF 2 INCHES. THE UPPER RIDGES TRY TO BRIDGE ACROSS THE DEEP SOUTH BY SUNDAY NIGHT WHICH MAY HELP TO LIMIT ACTIVITY ON MONDAY...AND WILL CARRY SLIGHTLY LOWER POPS. EXPECT TEMPERATURES THROUGH THE EXTENDED TO REMAIN NEAR OR SLIGHTLY ABOVE NORMAL IN THE LOWER TO MID 90S WITH OVERNIGHT LOWS IN THE LOW TO MID 70S. && .AVIATION /18Z MONDAY THROUGH SATURDAY/... A WARM HUMID AIRMASS WILL REMAIN OVER THE REGION THIS AFTERNOON AND OVERNIGHT. PRETTY GOOD CLOUD OVER AREA BUT WIDTH AFTERNOON SUNSHINE THERE SHOULD BE ENOUGH BREAKS IN THE CLOUDS TO MAKE THE ATMOSPHERE UNSTABLE WITH STRONG LOW LEVEL LAPSE RATES AND LIS DECREASING TO -6/-8. ALSO CAPES 3000-3500 J/KG. PULSE STORMS WITH HIGH REFLECTIVITY ELEVATED CORES. SEVERE THUNDERSTORM WATCH JUST ISSUED FOR ENTIRE CAE CWA THROUGH 9 PM THIS EVENING. MAINLY VFR CONDITIONS ARE EXPECTED THIS AFTERNOON THROUGH EARLY TONIGHT OUTSIDE OF CONVECTIVE ACTIVITY. IFR-MVFR CONDITIONS IN SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND THIS EVENING. MVFR VSBYS IN FOG NEAR DAWN TUESDAY THROUGH MID MORNING TUESDAY. IFR CONDITIONS POSSIBLE DURING THIS PERIOD BUT CONFIDENCE IS LOW TO PLACE IN TAF SITES AT THIS TIME. AFTER 14Z TUESDAY...MAINLY VFR CONDITIONS BUT IFR-MVFR CONDITIONS ARE AGAIN POSSIBLE IN SHOWERS AND THUNDERSTORMS MAINLY TUESDAY AFTERNOON. EXTENDED AVIATION OUTLOOK...SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS EXPECTED. && .CAE WATCHES/WARNINGS/ADVISORIES... SC...NONE. GA...NONE. && SYNOPSIS...HC NEAR TERM...HC SHORT TERM...HC LONG TERM...HC AVIATION...TTH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE COLUMBIA SC 507 AM EDT MON JUL 12 2010 GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-130907- AIKEN-BAMBERG-BARNWELL-BURKE-CALHOUN-CHESTERFIELD-CLARENDON-COLUMBIA- EDGEFIELD-FAIRFIELD-KERSHAW-LANCASTER-LEE-LEXINGTON-LINCOLN-MCCORMICK- MCDUFFIE-NEWBERRY-ORANGEBURG-RICHLAND-RICHMOND-SALUDA-SUMTER- 507 AM EDT MON JUL 12 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MIDLANDS OF SOUTH CAROLINA AND THE CENTRAL SAVANNAH RIVER AREA OF GEORGIA. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS THIS AFTERNOON AND EVENING. A FEW STORMS MAY PRODUCE LOCALLY HEAVY DOWNPOURS. ISOLATED SEVERE WIND GUSTS IN EXCESS OF 60 MPH ARE POSSIBLE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
939 AM EDT MON JUL 12 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0425 PM TSTM WND DMG 6 SSW TRENTON 33.67N 81.88W
07/11/2010 EDGEFIELD SC DEPT OF HIGHWAYS
TREES DOWNED ON HWY 121 AND BETTIS ACADEMY ROAD
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
945 AM EDT MON JUL 12 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0430 PM TSTM WND DMG 6 WNW SUMTER 33.98N 80.49W
07/11/2010 SUMTER SC PUBLIC
TREES DOWNED IN CHERRYVALE
&&PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE COLUMBIA SC
945 AM EDT MON JUL 12 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0430 PM TSTM WND DMG 4 WNW SUMTER 33.96N 80.45W
07/11/2010 SUMTER SC PUBLIC
TREES DOWNED IN CHERRYVALE
&&SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 147 PM EDT MON JUL 12 2010 GAZ077-121845- BURKE- 147 PM EDT MON JUL 12 2010 ...STRONG THUNDERSTORMS WERE AFFECTING BURKE COUNTY... AT 145 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES NORTH OF LOUISVILLE TO 7 MILES WEST OF WADLEY...OR ALONG A LINE EXTENDING FROM 22 MILES WEST OF WAYNESBORO TO 34 MILES WEST OF MILLEN...MOVING SOUTHEAST AT 15 MPH. WINDS 40 TO 50 MPH ARE EXPECTED WITH THESE STORMS. INTENSE 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. REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 877 6 3 3...6 7 7 2.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 253 PM EDT MON JUL 12 2010 GAZ077-SCZ035-121945- BARNWELL-BURKE- 253 PM EDT MON JUL 12 2010 ...STRONG THUNDERSTORMS WERE AFFECTING BARNWELL AND BURKE COUNTIES... AT 243 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS NEAR SARDIS OR 15 MILES EAST OF WAYNESBORO... MOVING EAST AT 20 MPH. WINDS 30 TO 40 MPH ARE EXPECTED WITH THIS STORM. REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 877 6 3 3...6 7 7 2. TTH
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 332 PM EDT MON JUL 12 2010 SCZ021-027-028-037-122030- CALHOUN-FAIRFIELD-LEXINGTON-RICHLAND- 332 PM EDT MON JUL 12 2010 ...A STRONG THUNDERSTORMS AFFECTING CALHOUN...FAIRFIELD...LEXINGTON AND RICHLAND COUNTIES... AT 330 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERAL STRONG THUNDERSTORMS OVER THE CENTRAL MIDLANDS. THESE STORMS WERE MOVING SOUTHEAST AT 30 MPH. WINDS 40 TO 50 MPH AND HEAVY RAIN ARE EXPECTED WITH THESE STORMS. THUNDERSTORMS POSE A VARIETY OF THREATS TO BOATERS ON LAKE MURRAY. YOUR BEST COURSE OF ACTION DURING A THUNDERSTORM IS TO SEEK SAFE HARBOR. IF YOU ARE CAUGHT IN THE OPEN LAKE WATERS...STAY BELOW DECK...AND IF POSSIBLE...AWAY FROM UNGROUNDED METAL OBJECTS. REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 877 6 3 3...6 7 7 2.
The Columbia radar (KCAE), 131 km away, was scanning. The volume nearest the first event began at 19:39 UTC.
2 thunderstorm wind. Local standard time, as filed.
Sheriff reported a few trees down on Hepzibah Church road.
Sheriff reported a couple of trees down on Ridge Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Georgia in 2010Every state in 2010This day in weather historyWarnings in Georgia, July 2010
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: 232160, 232159.