Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 252, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Dec 17, 2012, 4:42 PM EST for Berkeley County, Charleston County, South Carolina. It was in force for 52 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Dec 17, 2012, 4:42 PM EST (21:42 UTC)
- Expired
- Dec 17, 2012, 5:34 PM EST
- In force
- 52 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
Counties Berkeley County, SC, Charleston County, SC
The radar
The Charleston,SC radar (KCLX), 122 km from the middle of the area, began a volume at 21:43 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 17, 4:53 PM EST | TSTM WND DMG | 1 Sse West Ashley, SC | CHARLESTON POLICE DEPARTMENT REPORTED A DOWNED TREE AND POWERLINES ON WATEREE DRIVE |
| Dec 17, 5:30 PM EST | TSTM WND GST 44 | 2 Ene James Island, SC | FORT JOHNSON RECORDED A 44 MPH WIND GUST. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Dec 17, 2:55 PM EST | Tornado Watch | SPC | 2 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 9.7 hours before the alert went out and 22 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
536
WUUS52 KCHS 172142
SVRCHS
SCC015-019-172245-
/O.NEW.KCHS.SV.W.0252.121217T2142Z-121217T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
442 PM EST MON DEC 17 2012
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTH CENTRAL BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA...
CENTRAL CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA...
* UNTIL 545 PM EST
* AT 442 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERE THUNDERSTORMS...ALONG A LINE EXTENDING FROM MAGNOLIA GARDENS
TO MEGGETT...MOVING EAST AT 40 MPH.
PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
* SOME LOCATIONS IN THE WARNING INCLUDE...
MAGNOLIA GARDENS...MEGGETT...WADMALAW ISLAND...SHADOWMOSS...
HANAHAN...I-26/I-526 INTERCHANGE...NAVAL WEAPONS STATION
CHARLESTON...WEST ASHLEY...MAYBANK BRIDGE...JAMES ISLAND COUNTY
PARK...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. IF YOU SEE
OR HEAR A TORNADO...MOVE QUICKLY TO AN INTERIOR ROOM IN A STURDY
STRUCTURE.
TAKE SHELTER AS THUNDERSTORMS APPROACH.
REPORT HAIL...DOWNED TREES...LIMBS...AND POWER LINES DIRECTLY TO THE
CHARLESTON NATIONAL WEATHER SERVICE AT 1-888-383-2024...WHEN IT IS
SAFE TO DO SO.
&&
LAT...LON 3300 7936 3299 7950 3303 7952 3300 7954
3301 7957 3294 7961 3297 7956 3290 7957
3286 7967 3279 7973 3275 7986 3268 7988
3264 7995 3263 8036 3283 8021 3282 8015
3287 8018 3289 8009 3298 8011 3305 7933
TIME...MOT...LOC 2142Z 262DEG 33KT 3290 8008 3272 8020
$$3 follow-up statements
231
WWUS52 KCHS 172200
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
500 PM EST MON DEC 17 2012
SCC015-172210-
/O.CAN.KCHS.SV.W.0252.000000T0000Z-121217T2245Z/
BERKELEY SC-
500 PM EST MON DEC 17 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL BERKELEY COUNTY
HAS BEEN CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST MONDAY EVENING FOR
SOUTHEAST GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900
PM EST MONDAY EVENING FOR SOUTHEAST SOUTH CAROLINA.
LAT...LON 3300 7936 3301 7951 3302 7952 3301 7957
3294 7961 3294 7957 3297 7956 3290 7957
3275 7986 3268 7988 3265 7993 3268 8007
3279 7992 3286 7990 3288 7985 3292 7984
3294 7977 3301 7974 3305 7934
TIME...MOT...LOC 2200Z 262DEG 33KT 3281 7983 3267 7995
$$
SCC019-172245-
/O.CON.KCHS.SV.W.0252.000000T0000Z-121217T2245Z/
CHARLESTON SC-
500 PM EST MON DEC 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EST
FOR EASTERN CHARLESTON COUNTY...
AT 500 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM
ION TO CHARLESTON EXECUTIVE AIRPORT...MOVING EAST AT 40 MPH.
PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BOONE HALL
PLANTATION...BULL ISLAND...CAPE ISLAND...CAPE ROMAIN...CAPERS
INLET...FOLLY BEACH...FORT JOHNSON...FORT SUMTER...GARRIS LANDING...
JAMES ISLAND...JAMES ISLAND COUNTY PARK...LIGHTHOUSE ISLAND...MOUNT
PLEASANT...MOUNT PLEASANT REGIONAL AIRPORT...MOUNT PLEASANT TOWNE
CENTRE AND PRICE INLET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST MONDAY EVENING FOR
SOUTHEAST GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900
PM EST MONDAY EVENING FOR SOUTHEAST SOUTH CAROLINA.
&&
LAT...LON 3300 7936 3301 7951 3302 7952 3301 7957
3294 7961 3294 7957 3297 7956 3290 7957
3275 7986 3268 7988 3265 7993 3268 8007
3279 7992 3286 7990 3288 7985 3292 7984
3294 7977 3301 7974 3305 7934
TIME...MOT...LOC 2200Z 262DEG 33KT 3281 7983 3267 7995
$$806
WWUS52 KCHS 172210
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
510 PM EST MON DEC 17 2012
SCC019-172245-
/O.CON.KCHS.SV.W.0252.000000T0000Z-121217T2245Z/
CHARLESTON SC-
510 PM EST MON DEC 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EST
FOR EASTERN CHARLESTON COUNTY...
AT 510 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM
SNOWDEN TO FORT SUMTER...MOVING EAST AT 40 MPH.
PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BOONE HALL
PLANTATION...BULL ISLAND...CAPE ISLAND...CAPE ROMAIN...CAPERS
INLET...FORT SUMTER...GARRIS LANDING...LIGHTHOUSE ISLAND...MOUNT
PLEASANT...MOUNT PLEASANT REGIONAL AIRPORT...MOUNT PLEASANT TOWNE
CENTRE AND PRICE INLET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST MONDAY EVENING FOR
SOUTHEAST GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900
PM EST MONDAY EVENING FOR SOUTHEAST SOUTH CAROLINA.
&&
LAT...LON 3300 7936 3302 7952 3301 7957 3294 7960
3294 7957 3297 7956 3290 7957 3275 7987
3269 7988 3270 7989 3274 7990 3276 7988
3279 7992 3286 7990 3288 7985 3292 7984
3294 7977 3300 7972 3305 7934
TIME...MOT...LOC 2210Z 262DEG 33KT 3285 7983 3274 7983
$$010
WWUS52 KCHS 172234
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
534 PM EST MON DEC 17 2012
SCC019-172244-
/O.CAN.KCHS.SV.W.0252.000000T0000Z-121217T2245Z/
CHARLESTON SC-
534 PM EST MON DEC 17 2012
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHARLESTON COUNTY HAS
BEEN CANCELLED...
AT 534 PM EST...RADAR INDICATED THAT THE SEVERE THUNDERSTORM THAT
PROMPTED THE WARNING HAD MOVED OUT OF THE WARNED AREA...THUS THE
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELED.
TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.
LAT...LON 3300 7936 3302 7952 3301 7957 3294 7960
3294 7957 3297 7956 3290 7957 3275 7987
3269 7988 3270 7989 3274 7990 3276 7988
3279 7992 3286 7990 3288 7985 3292 7984
3294 7977 3300 7972 3305 7934
TIME...MOT...LOC 2234Z 262DEG 33KT 3288 7957 3277 7957
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 17, 3:47 PM EST | Severe Thunderstorm Warning | CHS | Beaufort, Jasper | 34 min |
| Dec 17, 3:57 PM EST | Severe Thunderstorm Warning | CHS | Beaufort, Charleston, Colleton, Jasper | 63 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.