Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 49, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Apr 5, 2012, 8:27 PM EDT for Berkeley County, Charleston County, South Carolina. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 5, 2012, 8:27 PM EDT (00:27 UTC)
- Expired
- Apr 5, 2012, 9:02 PM EDT
- In force
- 35 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
Counties Berkeley County, SC, Charleston County, SC
The radar
The Charleston,SC radar (KCLX), 135 km from the middle of the area, began a volume at 00:29 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 5, 1:47 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 00:00Z, 0.5 hours before the alert went out and 34 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
- 901 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 1242 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
154
WUUS52 KCHS 060027
SVRCHS
SCC015-019-060130-
/O.NEW.KCHS.SV.W.0049.120406T0027Z-120406T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
827 PM EDT THU APR 5 2012
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN BERKELEY COUNTY IN SOUTHEAST SOUTH CAROLINA...
EASTERN CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA...
* UNTIL 930 PM EDT
* AT 827 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERE THUNDERSTORMS...ALONG A LINE EXTENDING FROM 7 MILES NORTH OF
SANGAREE TO NAVAL WEAPONS STATION CHARLESTON TO CAINHOY TO FOLLY
BEACH...MOVING EAST AT 40 MPH.
PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
* SOME LOCATIONS IN THE WARNING INCLUDE...
WANDO...CAINHOY...MOUNT PLEASANT REGIONAL AIRPORT...ISLE OF
PALMS...OLD SANTEE CANAL STATE PARK...CAPERS INLET...PRICE INLET...
GARRIS LANDING...HUGER...BULL ISLAND...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT HAIL...DOWNED TREES...LIMBS...AND POWER LINES DIRECTLY TO THE
CHARLESTON NATIONAL WEATHER SERVICE AT 1-888-383-2024.
&&
LAT...LON 3308 7933 3300 7936 3299 7950 3303 7953
3298 7955 3301 7957 3294 7961 3297 7955
3290 7957 3279 7973 3275 7986 3268 7988
3263 7997 3285 8002 3307 8022 3333 7972
3314 7926
TIME...MOT...LOC 0027Z 261DEG 36KT 3314 8008 3299 7989
3292 7980 3265 7983
$$2 follow-up statements
970
WWUS52 KCHS 060042
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
842 PM EDT THU APR 5 2012
SCC015-019-060130-
/O.CON.KCHS.SV.W.0049.000000T0000Z-120406T0130Z/
CHARLESTON SC-BERKELEY SC-
842 PM EDT THU APR 5 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SOUTHEASTERN BERKELEY AND NORTHEASTERN CHARLESTON COUNTIES...
AT 842 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM
WADBOO TO SMITH TO GARRIS LANDING TO 10 MILES SOUTH OF WILD DUNES...
MOVING EAST AT 40 MPH.
PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...WHICH MAY
FLOOD ROADS...DITCHES AND LOW-LYING AREAS. AVOID FLOOD PRONE AREAS
AND DO NOT DRIVE INTO PLACES WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3308 7933 3300 7936 3299 7950 3303 7953
3298 7955 3301 7957 3294 7961 3297 7955
3290 7957 3279 7973 3281 7979 3286 7986
3294 7991 3300 7997 3313 8010 3333 7972
3314 7926
TIME...MOT...LOC 0042Z 261DEG 36KT 3317 7993 3301 7971
3294 7962 3267 7966
$$040
WWUS52 KCHS 060102
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
902 PM EDT THU APR 5 2012
SCC015-019-060112-
/O.CAN.KCHS.SV.W.0049.000000T0000Z-120406T0130Z/
CHARLESTON SC-BERKELEY SC-
902 PM EDT THU APR 5 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BERKELEY AND
NORTHEASTERN CHARLESTON COUNTIES HAS BEEN CANCELLED...
AT 902 PM EDT...RADAR INDICATED THAT THE THUNDERSTORM THAT PROMPTED
THE WARNING HAD WEAKENED...THUS THE WARNING HAS BEEN CANCELED.
ALTHOUGH THE IMMEDIATE THREAT FOR DAMAGING WINDS AND LARGE HAIL HAS
ENDED...THUNDERSTORMS ARE STILL PRODUCING FREQUENT CLOUD TO GROUND
LIGHTNING STRIKES. THE SAFEST COURSE OF ACTION IS TO REMAIN INDOORS
UNTIL THE STORMS HAVE PASSED.
LAT...LON 3308 7933 3300 7936 3299 7950 3303 7953
3298 7955 3301 7957 3294 7961 3297 7955
3290 7957 3279 7973 3281 7979 3286 7986
3294 7991 3300 7997 3313 8010 3333 7972
3314 7926
TIME...MOT...LOC 0102Z 261DEG 36KT 3320 7969 3304 7947
3297 7938 3270 7943
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 4:21 AM EDT | Coastal Flood Watch | CHS | 11 hr | |
| Apr 6, 4:21 AM EDT | Coastal Flood Watch | CHS | 46 min | |
| Apr 6, 4:21 AM EDT | Rip Current Statement | CHS | 16 hr | |
| Apr 6, 3:40 PM EDT | Coastal Flood Warning | CHS | 7 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.