Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 243, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Sep 29, 2012, 4:48 PM EDT for Colleton County, Dorchester County, South Carolina. It was in force for 37 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
- Sep 29, 2012, 4:48 PM EDT (20:48 UTC)
- Expired
- Sep 29, 2012, 5:25 PM EDT
- In force
- 37 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
Counties Colleton County, SC, Dorchester County, SC
The radar
The Charleston,SC radar (KCLX), 62 km from the middle of the area, began a volume at 20:52 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 |
|---|---|---|---|
| Sep 29, 4:55 PM EDT | HAIL 0.88 | 2 Sse Ruffin, SC | NICKEL SIZE HAIL FELL FOR A FEW SECONDS. TIME ESTIMATED FROM RADAR. |
| Sep 29, 5:05 PM EDT | TSTM WND DMG | 3 Ene Williams, SC | TREE DOWN AT SMYLY ROAD OFF OF MT CARMEL ROAD. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 8.8 hours before the alert went out and 64 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
- 315 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 1061 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
619 WUUS52 KCHS 292048 SVRCHS SCC029-035-292145- /O.NEW.KCHS.SV.W.0243.120929T2048Z-120929T2145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHARLESTON SC 448 PM EDT SAT SEP 29 2012 THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN COLLETON COUNTY IN SOUTHEAST SOUTH CAROLINA... NORTHWESTERN DORCHESTER COUNTY IN SOUTHEAST SOUTH CAROLINA... * UNTIL 545 PM EDT * AT 449 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...NEAR RUFFIN...MOVING NORTHEAST AT 20 MPH. PREPARE NOW FOR THE FOLLOWING HAZARDS... DAMAGING WINDS IN EXCESS OF 60 MPH... HAIL UP TO QUARTER SIZE... * SOME LOCATIONS IN THE WARNING INCLUDE... WILLIAMS...RUFFIN...WILLIAMS...CANADYS...CANADYS...SAINT GEORGE... INDIAN FIELD... PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 3328 8052 3304 8036 3291 8087 3299 8094 TIME...MOT...LOC 2049Z 240DEG 18KT 3297 8086 $$ JAQ
2 follow-up statements
367 WWUS52 KCHS 292109 SVSCHS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLESTON SC 509 PM EDT SAT SEP 29 2012 SCC029-035-292145- /O.CON.KCHS.SV.W.0243.000000T0000Z-120929T2145Z/ DORCHESTER SC-COLLETON SC- 509 PM EDT SAT SEP 29 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR NORTHEASTERN COLLETON AND NORTHWESTERN DORCHESTER COUNTIES... AT 509 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM NEAR SMYLY...MOVING NORTHEAST AT 25 MPH. PREPARE NOW FOR THE FOLLOWING HAZARDS... DAMAGING WINDS IN EXCESS OF 60 MPH... HAIL UP TO QUARTER SIZE... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...CANADYS... INDIAN FIELD AND SAINT GEORGE. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMAIN ALERT. WEATHER CONDITIONS WILL RAPIDLY DETERIORATE AS STORMS APPROACH. SEEK SHELTER IN A STURDY BUILDING...MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO CHS.SKYWARN@NOAA.GOV. && LAT...LON 3296 8071 3304 8081 3328 8052 3304 8036 TIME...MOT...LOC 2109Z 240DEG 20KT 3303 8073 $$ JAQ
096 WWUS52 KCHS 292125 SVSCHS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLESTON SC 525 PM EDT SAT SEP 29 2012 SCC029-035-292135- /O.CAN.KCHS.SV.W.0243.000000T0000Z-120929T2145Z/ DORCHESTER SC-COLLETON SC- 525 PM EDT SAT SEP 29 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN COLLETON AND NORTHWESTERN DORCHESTER COUNTIES HAS BEEN CANCELLED... AT 525 PM EDT...RADAR INDICATED THAT THE THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED...THUS THE WARNING HAS BEEN CANCELED. ALTHOUGH THE SEVERE THUNDERSTORM WARNING IS NO LONGER IN EFFECT... THUNDERSTORMS ARE STILL CAPABLE OF PRODUCING GUSTY WINDS...SMALL HAIL...FREQUENT LIGHTNING AND HEAVY RAINFALL. THE SAFEST COURSE OF ACTION IS TO REMAIN INDOORS UNTIL THE STORMS HAVE PASSED. 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 3296 8071 3304 8081 3328 8052 3304 8036 TIME...MOT...LOC 2125Z 240DEG 20KT 3307 8064 $$ JAQ
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 29, 2:56 PM EDT | Special Weather Statement | CHS | Berkeley | 94 min |
| Sep 29, 4:07 PM EDT | Special Weather Statement | CHS | Hampton | 23 min |
| Sep 29, 4:21 PM EDT | Special Weather Statement | CHS | Berkeley | 39 min |
| Sep 29, 4:45 PM EDT | Special Weather Statement | CHS | Colleton | 30 min |
| Sep 29, 4:52 PM EDT | Special Weather Statement | CHS | Hampton | 38 min |
| Sep 29, 5:03 PM EDT | Special Weather Statement | CHS | Berkeley | 27 min |
| Sep 29, 7:16 PM EDT | Special Weather Statement | CHS | Jasper | 29 min |
| Sep 29, 7:24 PM EDT | Severe Thunderstorm Warning | CHS | Beaufort, Jasper | 51 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.