High shear characterized with 70 knots of bulk shear along with low surface based cape set up a high shear, low cape environment ahead of the trough over the southeastern United States. A distinct line of thunderstorms developed along a surface trough and became strong as the trough swept through the Southeast.
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.
High shear characterized with 70 knots of bulk shear along with low surface based cape set up a high shear, low cape environment ahead of the trough over the southeastern United States. A distinct line of thunderstorms developed along a surface trough and became strong as the trough swept through the Southeast. Although there was a tornado watch issued for the entire forecast area, all reported damage was contributed to straight-line winds.
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 Dec 17, 3:16 PM EST, 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHARLESTON SC 316 PM EST MON DEC 17 2012 .SYNOPSIS... A COLD FRONT WILL MOVE THROUGH THE AREA LATE TONIGHT INTO EARLY TUESDAY WITH HIGH PRESSURE RETURNING THROUGH WEDNESDAY. A STRONGER COLD FRONT WILL THEN PUSH THROUGH LATE THURSDAY BRINGING MUCH COOLER WEATHER THROUGH THE END OF THE WEEK. && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... UPDATE...A NEW TORNADO WATCH HAS BEEN ISSUED TO INCLUDE ALL COUNTIES TO THE EAST THROUGH SOUTHERN SOUTH CAROLINA. PREVIOUS DISCUSSION CONTINUES BELOW. UPDATE TO INCLUDE TORNADO WATCH 684 FOR MOST OF SOUTHEAST GEORGIA AND THE NEARSHORE GEORGIA COASTAL WATERS. THE UPSTREAM LINE OF CONVECTION HAS HELD TOGETHER NICELY AND A DISTINCT MESOSCALE BOUNDARY HAS SET UP IN THIS AREA. THE BOUNDARY STRETCHES SOMEWHERE BETWEEN CLAXTON AND STATESBORO AND EXTENDS A BIT TO THE EAST. TEMPS SOUTH OF THE BOUNDARY ARE IN THE LOW 70S WITH DEWPOINTS APPROACHING THE MID 60S. NORTH OF THE BOUNDARY TEMPS ARE IN THE LOW 60S WITH A CLEAR WIND SHIFT FROM SOUTHERLY TO EASTERLY. 0-6 KM SHEAR VALUES ARE ON THE ORDER OF 70 KTS AND 0-3 KM SHEAR IS APPROACHING 40-45 KTS...WITH SURFACE BASED CAPE VALUES RANGING UP TO AROUND 500 J/KG. THE FAVORED MODE OF CONVECTION WILL BE BOWING LINE SEGMENTS...WITH THE POTENTIAL FOR EMBEDDED LOW TOPPED SUPERCELL STRUCTURES. DAMAGING WINDS AND TORNADOES ARE THE PRIMARY SEVERE WEATHER THREAT IN THE WATCH AREA. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH THURSDAY/... TONIGHT...THE UPPER TROUGH AND ANY ONGOING PRECIP/CONVECTION WILL BE PUSHING OFFSHORE. EXPECT PRECIP TO BE OVER BEFORE MIDNIGHT. MODEL SOUNDINGS AND CROSS SECTIONS SHOW THAT THE LOW LEVEL MOISTURE AND CLOUDS WILL BE SLOW TO SCOUR OUT...WITH MOSTLY CLOUDY SKIES LIKELY TO PERSIST THROUGH EARLY MORNING...THEN PARTLY CLOUDY BY SUNRISE TUESDAY. MIN TEMPS FALLING BACK INTO THE LOWER TO MID 50S...BUT STILL WELL ABOVE NORMAL. TUESDAY AND WEDNESDAY...DRY HIGH PRESSURE WILL BUILD AND BECOME CENTERED OVER THE SOUTHEAST TUESDAY BEHIND A COLD FRONT SHIFTING WELL OFFSHORE. TEMPS WILL GRADUALLY REBOUND THROUGHOUT THE DAY UNDER SUNNY SKIES...IN THE MID/UPPER 60S. OVERNIGHT LOWS WILL RANGE IN THE UPPER 30S INLAND TO MID 40S ALONG THE COAST. DRY CONDITIONS WILL CONTINUE THROUGH WEDNESDAY AS RIDGING PEAKS OVER THE SOUTHEAST AHEAD OF ANOTHER TROUGH OF LOW PRESSURE SHIFTING THROUGH THE CENTRAL UNITED STATES. EXPECT OVERALL TEMPS TO PEAK IN THE UPPER 60S/LOWER 70S UNDER MOSTLY SUNNY SKIES. OVERNIGHT LOWS WILL BE WARMER...IN THE MID 40S INLAND TO MID 50S ALONG THE COAST. THURSDAY...A DEEP LOW PRESSURE SYSTEM WILL MAKE WAY THROUGH THE MIDWEST WITH A SOUTHWARD EXTENDING COLD FRONT INTO THE GULF OF MEXICO. STRONG ISENTROPIC ASCENT AHEAD OF THE FRONT WILL LIKELY LIMIT SFC HEATING POTENTIAL AS CLOUD COVER EXPANDS OVER THE FORECAST AREA. HOWEVER...TEMPS WILL STILL REACH THE LOW 70S ALONG AND AHEAD OF THE COLD FRONT BEFORE IT SWEEPS THROUGH THE SOUTHEAST DURING EVENING HOURS. CHANCES OF SHOWERS WILL PEAK OVER SOUTHEAST SOUTH CAROLINA AND SOUTHEAST GEORGIA AS COLD FROPA OCCURS LATE. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... A STRONG COLD FRONT WILL LIKELY BE SHIFTING THROUGH THE FORECAST AREA LATE THURSDAY INTO EARLY FRIDAY MORNING...BRINGING THE BEST CHANCES OF PRECIP OVER THE LONG TERM. COLD AND DRY HIGH PRESSURE WILL THEN FOLLOW THE FRONT...RESULTING IN TEMPS 10-15 DEGREES COOLER THAN PREVIOUS DAYS. OVERALL TEMPS WILL REMAIN COOL UNDER A ZONAL FLOW PATTERN THROUGH THE WEEKEND...WITH A GRADUAL WARMING OF 1-2 DEGREES EACH DAY. EXPECT OVERALL TEMPS TO BE IN THE MID/UPPER 50S THROUGH EARLY WEEKEND...BEFORE WARMING TO AROUND 60 EARLY NEXT WEEK. OVERNIGHT TEMPS WILL LIKELY REACH THE LOW 30S AWAY FROM COAST FRIDAY...BEFORE GRADUALLY WARMING INTO THE MID 30S TO LOW 40S BY THE BEGINNING OF NEXT WEEK. && .AVIATION /20Z MONDAY THROUGH SATURDAY/... THE MOST BIGGEST NEAR TERM CONCERN FOR THE TERMINALS WILL BE THE INCOMING LINE OF THUNDERSTORMS. KSAV HAS THE BEST CHANCE TO SEE THUNDER AND STRONG WINDS SINCE IT IS IN THE MORE UNSTABLE AIR. FOR NOW HAVE ONLY INCLUDED A TEMPO FOR HEAVY RAIN BUT WILL AMEND AS IT BECOMES MORE CLEAR WHETHER OR NOT THUNDER WILL REACH THE TERMINAL. KCHS COULD ALSO SEE A PERIOD OF MODERATE TO HEAVY RAIN AND EVEN SOME THUNDER...THOUGH CONFIDENCE IS LOWER THERE. BEHIND THE LINE OF STORMS AND PRECIP...PLENTY OF LOW LEVEL MOISTURE WILL LINGER THROUGH THE OVERNIGHT AND CEILINGS APPEAR TO BE AN INCREASING CONCERN. GUIDANCE IS HINTING AT LOW END MVFR...HIGH END IFR CIGS FOR A TIME AT BOTH SITES. CHANCES APPEAR BETTER AT KSAV BUT FOR NOW HAVE LEFT BOTH WITH MVFR CIGS AND SCATTERED IFR. SOUNDINGS AND TIME HEIGHTS APPEAR TO LINGER FOR A FEW HOURS AFTER SUNRISE BEFORE DEEP DRYING COMMENCES. LOW END GUSTS POSSIBLE INTO THE AFTERNOON. EXTENDED AVIATION OUTLOOK...VFR CIGS/VSBYS WILL PREVAIL BY TUESDAY AFTERNOON AND PERSIST THROUGH WEDNESDAY...BEFORE DETERIORATING THURSDAY AS A STRONG COLD FRONT APPROACHES FROM THE WEST. PERIODS OF MVFR OR LOWER CIGS/VSBYS ARE POSSIBLE THURSDAY EVENING THROUGH EARLY FRIDAY WITH SHOWERS ALONG AND AHEAD OF THE PASSING COLD FRONT. VFR CIGS/VSBYS WILL THEN RETURN BY EARLY WEEKEND. && .MARINE... AN INCREASING SOUTHWEST PRESSURE GRADIENT WILL RESULT IN LOW END SCA CONDITIONS FOR THE OFFSHORE GA WATERS LATER THIS AFTERNOON THROUGH TUESDAY AFTERNOON. WINDS EXPECTED TO INCREASE TO 15 TO 20 KTS BY THIS AFTERNOON WITH SEAS 3 TO 4 FEET NEAR SHORE...AND BUILDING TO 5 TO 7 FEET OFFSHORE BY LATER THIS AFTERNOON AND PERSISTING THROUGH TONIGHT. WINDS WILL VEER GRADUALLY FROM SW TODAY TO WESTERLY LATER TONIGHT AS THE COLD FRONT MOVES THROUGH THE REGION. TUESDAY THROUGH FRIDAY...SMALL CRAFT ADVISORY CONDITIONS WILL BE ONGOING FOR OUTER GEORGIA WATERS BEHIND A COLD FRONT SHIFTING OVER THE WESTERN ATLANTIC. EXPECT WINDS BETWEEN 20-25 KT AND SEAS UP TO 6 FT UNTIL TUESDAY AFTERNOON BEFORE CONDITIONS GRADUALLY IMPROVE WITH HIGH PRESSURE BUILDING OVER THE WATERS THROUGH WEDNESDAY. WINDS/SEAS WILL THEN INCREASE/BUILD AHEAD OF A STRONG COLD FRONT APPROACHING FROM THE WEST THURSDAY. CONDITIONS WILL LIKELY MEET SMALL CRAFT ADVISORIES LEVELS AS THE COLD FRONT SWEEPS OVER THE WATERS THURSDAY EVENING THROUGH FRIDAY MORNING. STRONG COLD AIR ADVECTION BEHIND THE FRONT ALONG WITH A TIGHT PRESSURE GRADIENT MAY PRODUCE FREQUENT GUSTS BETWEEN 30-35 KNOTS OVER WATERS BEYOND 10 NM FROM THE COAST. SHOULD CONDITIONS CONTINUE TO FAVOR THIS SCENARIO...GALE WATCHES OR WARNINGS MAY BE NEEDED LATE THURSDAY INTO EARLY FRIDAY. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...NONE. SC...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 1 PM EST TUESDAY FOR AMZ374. && NEAR TERM...BSH SHORT TERM...79 LONG TERM...DPB AVIATION...BSH/79 MARINE...BSH/79
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHARLESTON SC 314 PM EST MON DEC 17 2012 AMZ330-350-352-354-GAZ099>101-114>119-137>141-SCZ042>045-047>052- 182015- 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-CANDLER-BULLOCH-EFFINGHAM- TATTNALL-EVANS-INLAND BRYAN-COASTAL BRYAN-INLAND CHATHAM- COASTAL CHATHAM-LONG-INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH- COASTAL MCINTOSH-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY- INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER- TIDAL BERKELEY- 314 PM EST MON DEC 17 2012 ...TORNADO WATCH 684 IN EFFECT UNTIL 9 PM EST THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS...SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. TORNADO WATCH. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... PLEASE RELAY ANY REPORTS OF HAZARDOUS WEATHER INCLUDING...BUT NOT LIMITED TO LARGE HAIL...DAMAGING WINDS...TORNADOES AND FLOODING TO THE NATIONAL WEATHER SERVICE IN CHARLESTON AT 1-888-383-2024. AMZ374-GAZ087-088-SCZ040-182015- WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO 60 NM-JENKINS-SCREVEN-ALLENDALE- 314 PM EST MON DEC 17 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS...SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA. .DAY ONE...THIS AFTERNOON AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
304 PM EST MON DEC 17 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0245 PM TSTM WND DMG 7 S REGISTER 32.27N 81.88W
12/17/2012 BULLOCH GA 911 CALL CENTER
BULLOCH COUNTY 911 CALL CENTER REPORTED A TREE DOWN ON
A POWERLINE ON HIGHWAY 301 SOUTH.
&&
EVENT NUMBER CHS1200853
BDCSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
309 PM EST MON DEC 17 2012
GAZ116-137-138-172045-
INLAND BRYAN-INLAND LIBERTY-LONG-
309 PM EST MON DEC 17 2012
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF LIBERTY...BRYAN AND
LONG COUNTIES THROUGH 345 PM EST...
AT 304 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...16 MILES WEST OF LETFORD...MOVING EAST AT 55
MPH.
SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
FORT STEWART...
PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ALTHOUGH LITTLE OR NO LIGHTNING IS OCCURRING...THIS STORM IS CAPABLE
OF PRODUCING GUSTY WINDS WHICH MAY BLOW OVER TENTS...OUTDOOR
FURNITURE...AND HANGING OBJECTS. IF TIME PERMITS SECURE VULNERABLE
OBJECTS AND GO INSIDE A STURDY SHELTER.
A TORNADO WATCH IS ALSO IN EFFECT. THUNDERSTORMS CAN PRODUCE
TORNADOES SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. BE ALERT
FOR RAPIDLY CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY
IF SEVERE WEATHER IS OBSERVED OR A WARNING IS ISSUED.
&&
LAT...LON 3183 8195 3185 8192 3188 8192 3189 8189
3197 8188 3197 8186 3202 8182 3202 8181
3205 8176 3212 8147 3188 8146 3181 8195
TIME...MOT...LOC 2009Z 260DEG 49KT 3200 8180SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
320 PM EST MON DEC 17 2012
GAZ137-138-172045-
INLAND LIBERTY-LONG-
320 PM EST MON DEC 17 2012
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF LIBERTY AND LONG
COUNTIES THROUGH 345 PM EST...
AT 318 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...6 MILES SOUTHWEST OF JONES CREEK...MOVING EAST
AT 50 MPH.
SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
ALLENHURST...DONALD...GUM BRANCH...LUDOWICI...MCINTOSH AND
WALTHOURVILLE...
PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 3181 8195 3184 8194 3183 8149 3162 8155
3165 8183 3167 8186 3171 8188 3173 8191
3175 8192 3179 8198 3180 8198
TIME...MOT...LOC 2020Z 275DEG 45KT 3173 8188SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
331 PM EST MON DEC 17 2012
GAZ101-116>119-138-SCZ047-051-172100-
COASTAL BRYAN-COASTAL CHATHAM-COASTAL JASPER-EFFINGHAM-INLAND
BRYAN-INLAND CHATHAM-INLAND JASPER-INLAND LIBERTY-
331 PM EST MON DEC 17 2012
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF EFFINGHAM...
LIBERTY...BRYAN...JASPER AND CHATHAM COUNTIES THROUGH 400 PM EST...
AT 328 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM EDEN TO 6 MILES
WEST OF FLEMING...MOVING EAST AT 40 MPH.
SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
BELFAST...BLOOMINGDALE...EDEN...FORT MCALLISTER...FORT PULASKI
NATIONAL MONUMENT...GARDEN CITY...HUTCHINSON ISLAND...I-16/I-95
INTERCHANGE...ISLE OF HOPE...KELLER...MEINHARD...MELDRIM...
MONTEITH...MONTGOMERY...OSSABAW SOUND...POOLER...PORT WENTWORTH...
RICHMOND HILL...SANDFLY...SAVANNAH...SAVANNAH AIRPORT...SAVANNAH
HISTORIC DISTRICT...SKIDAWAY ISLAND...THUNDERBOLT...VERNONBURG...
WASSAW ISLAND...WHITE BLUFF...WHITEMARSH ISLAND...WILMINGTON
ISLAND...WINDSOR FOREST AND RIVERSIDE...
PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH IS ALSO IN EFFECT. THUNDERSTORMS CAN PRODUCE
TORNADOES SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. BE ALERT
FOR RAPIDLY CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY
IF SEVERE WEATHER IS OBSERVED OR A WARNING IS ISSUED.
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 3184 8152 3222 8139 3218 8104 3199 8084
3195 8088 3194 8091 3191 8093 3185 8100
3183 8103 3181 8103 3176 8107 3173 8111
TIME...MOT...LOC 2031Z 283DEG 39KT 3218 8135 3188 8149PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
335 PM EST MON DEC 17 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0250 PM TSTM WND DMG 1 WSW STATESBORO 32.45N 81.80W
12/17/2012 BULLOCH GA 911 CALL CENTER
BULLOCH COUNTY 911 CENTER REPORTED A TREE DOWN ON MAPLE
STREET IN STATESBORO.
&&
EVENT NUMBER CHS1200854
BDCSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
341 PM EST MON DEC 17 2012
GAZ116-117-119-137>141-172130-
COASTAL BRYAN-COASTAL CHATHAM-COASTAL LIBERTY-COASTAL MCINTOSH-INLAND
BRYAN-INLAND LIBERTY-INLAND MCINTOSH-LONG-
341 PM EST MON DEC 17 2012
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF LIBERTY...BRYAN...
CHATHAM...LONG AND MCINTOSH COUNTIES THROUGH 430 PM EST...
AT 337 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM MCINTOSH TO
TIBET...MOVING EAST AT 50 MPH.
SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
BLACKBEARD ISLAND...CARNIGAN...COX...CRESCENT...DARIEN...EULONIA...
HALFMOON LANDING...HARRIS NECK...JONES...MCINTOSH...MERIDIAN...PINE
HARBOR...RETREAT...RICEBORO...RIDGEVILLE...SAPELO ISLAND...SHELLMAN
BLUFF...SOUTH NEWPORT...ST. CATHERINES ISLAND...SUNBURY...TIBET...
TOWNSEND...VALONA...WOLF ISLAND...CROSSROADS AND MIDWAY...
PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH IS ALSO IN EFFECT. THUNDERSTORMS CAN PRODUCE
TORNADOES SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. BE ALERT
FOR RAPIDLY CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY
IF SEVERE WEATHER IS OBSERVED OR A WARNING IS ISSUED.
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 3132 8137 3131 8144 3133 8144 3132 8146
3145 8163 3147 8162 3160 8174 3186 8153
3173 8111 3163 8112 3155 8117 3147 8119
3140 8125 3138 8125 3137 8127 3130 8126
3129 8130
TIME...MOT...LOC 2041Z 274DEG 42KT 3183 8146 3166 8160The Charleston,SC radar (KCLX), 22 km away, was scanning. The volume nearest the first event began at 20:47 UTC.
8 thunderstorm wind. Local standard time, as filed.
A tree was blown down along Tillman Road near the Wagon Branch Loop. Large tree limbs were also blown down near the intersection of West Main Street and Rail Road Avenue.
A tree was blown down onto Interstate 95 near mile marker 4.
South Carolina Highway Patrol reported a tree down near the intersection of Highway 170 and Highway 17.
The Department of Highways reported a tree down near the intersection of Highway 315 and Levy.
A trained spotter reported a tree down on Palmetto Bluff Road.
The Beaufort Gazette Newspaper reported a few trees down and damage to a home in Laurel Bay.
A state official reported a tree down near the intersection Buckwalter Parkway and Fording Island Road.
The Charleston Police Department reported a tree and power lines down on Wateree Drive.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Carolina in 2012Every state in 2012This day in weather historyWarnings in South Carolina, December 2012
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: 426260, 426262, 426266, 426268, 426270, 426272, 426277, 426286.