Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 78, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at May 22, 2012, 6:33 PM EDT for 4 counties in South Carolina. It was in force for 57 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
- May 22, 2012, 6:33 PM EDT (22:33 UTC)
- Expired
- May 22, 2012, 7:30 PM EDT
- In force
- 57 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
Counties Beaufort County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC
The radar
The Charleston,SC radar (KCLX), 68 km from the middle of the area, began a volume at 22:35 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 |
|---|---|---|---|
| May 22, 7:18 PM EDT | TSTM WND DMG | 3 W Slands Bridge, SC | TRAINED SPOTTER REPORTED HALF DOLLAR SIZE HAIL AND SEVERAL TREES DOWN NEAR THE INTERSECTION OF HIGHWAY 17A AND HIGHWAY 61. |
| May 22, 7:18 PM EDT | HAIL 1.25 | 3 W Slands Bridge, SC | TRAINED SPOTTER REPORTED HALF DOLLAR SIZE HAIL AND SEVERAL TREES DOWN NEAR THE INTERSECTION OF HIGHWAY 17A AND HIGHWAY 61. |
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 |
|---|---|---|---|
| May 22, 3:32 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 10.6 hours before the alert went out and 35 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
- 831 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1209 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
508
WUUS52 KCHS 222233
SVRCHS
SCC013-019-029-035-222330-
/O.NEW.KCHS.SV.W.0078.120522T2233Z-120522T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
633 PM EDT TUE MAY 22 2012
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN BEAUFORT COUNTY IN SOUTHEAST SOUTH CAROLINA...
SOUTHWESTERN CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA...
EASTERN COLLETON COUNTY IN SOUTHEAST SOUTH CAROLINA...
DORCHESTER COUNTY IN SOUTHEAST SOUTH CAROLINA...
* UNTIL 730 PM EDT
* AT 633 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERE THUNDERSTORMS...ALONG A LINE EXTENDING FROM CANADYS TO GREEN
POND...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 THE WARNING INCLUDE...
RITTER...CANADYS...ROUND O...SAINT GEORGE...BENNETTS POINT...INDIAN
FIELD...COTTAGEVILLE...DORCHESTER...HARLEYVILLE...
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 3259 8011 3254 8017 3255 8020 3251 8027
3247 8073 3309 8074 3329 8049 3326 8042
3260 8004
TIME...MOT...LOC 2233Z 244DEG 22KT 3304 8058 3272 8063
$$3 follow-up statements
267
WWUS52 KCHS 222250
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
650 PM EDT TUE MAY 22 2012
SCC013-019-029-035-222330-
/O.CON.KCHS.SV.W.0078.000000T0000Z-120522T2330Z/
DORCHESTER SC-CHARLESTON SC-COLLETON SC-BEAUFORT SC-
650 PM EDT TUE MAY 22 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR NORTHEASTERN BEAUFORT...EASTERN COLLETON...SOUTHWESTERN
CHARLESTON AND DORCHESTER COUNTIES...
AT 650 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM
PREGNALL TO WIGGINS...MOVING NORTHEAST AT 25 MPH.
PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
HAIL UP TO QUARTER SIZE...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...ADAMS
RUN...ASHEPOO...BEARS BLUFF...BENNETTS POINT...CANADYS...
COTTAGEVILLE...DELEMAR CROSSROADS...DORCHESTER...EDISTO ISLAND...
GIVHANS...GIVHANS FERRY STATE PARK...GREEN POND...HARLEYVILLE...
HOLLYWOOD...INDIAN FIELD...JACKSONBORO...KIAWAH ISLAND...MEGGETT...
RAVENEL...RITTER...ROCKVILLE...ROUND O...SAINT GEORGE...SEABROOK
ISLAND...WADMALAW ISLAND...WALTERBORO AND YONGES ISLAND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING LARGE HAIL...DAMAGING
WINDS OF 58 MPH OR GREATER...DEADLY LIGHTNING AND VERY HEAVY RAIN. GO
INSIDE A STURDY SHELTER. MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM
WINDOWS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.
&&
LAT...LON 3259 8011 3254 8017 3255 8020 3251 8027
3249 8048 3257 8066 3309 8074 3329 8049
3326 8042 3260 8004
TIME...MOT...LOC 2250Z 244DEG 22KT 3308 8047 3263 8055
$$426
WWUS52 KCHS 222309
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
709 PM EDT TUE MAY 22 2012
SCC013-222318-
/O.CAN.KCHS.SV.W.0078.000000T0000Z-120522T2330Z/
BEAUFORT SC-
709 PM EDT TUE MAY 22 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BEAUFORT COUNTY
HAS BEEN CANCELLED...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST SOUTH CAROLINA.
LAT...LON 3259 8011 3254 8017 3255 8020 3252 8033
3262 8045 3277 8048 3297 8045 3304 8038
3306 8030 3260 8004
TIME...MOT...LOC 2308Z 244DEG 22KT 3313 8035 3268 8043
$$
SCC019-029-035-222330-
/O.CON.KCHS.SV.W.0078.000000T0000Z-120522T2330Z/
DORCHESTER SC-CHARLESTON SC-COLLETON SC-
709 PM EDT TUE MAY 22 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR EAST CENTRAL COLLETON...SOUTHWESTERN CHARLESTON AND SOUTH CENTRAL
DORCHESTER COUNTIES...
AT 708 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 6
MILES NORTH OF GIVHANS FERRY STATE PARK TO FENWICK...MOVING NORTHEAST
AT 25 MPH.
PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
HAIL UP TO QUARTER SIZE...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...ADAMS
RUN...BEARS BLUFF...DELEMAR CROSSROADS...EDISTO ISLAND...GIVHANS...
GIVHANS FERRY STATE PARK ...HOLLYWOOD...JACKSONBORO...KIAWAH
ISLAND...MEGGETT...RAVENEL...ROCKVILLE...SEABROOK ISLAND...WADMALAW
ISLAND AND YONGES ISLAND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST SOUTH CAROLINA.
TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.
&&
LAT...LON 3259 8011 3254 8017 3255 8020 3252 8033
3262 8045 3277 8048 3297 8045 3304 8038
3306 8030 3260 8004
TIME...MOT...LOC 2308Z 244DEG 22KT 3313 8035 3268 8043
$$946
WWUS52 KCHS 222329
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
729 PM EDT TUE MAY 22 2012
SCC019-029-035-222337-
/O.EXP.KCHS.SV.W.0078.000000T0000Z-120522T2330Z/
DORCHESTER SC-CHARLESTON SC-COLLETON SC-
729 PM EDT TUE MAY 22 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN COLLETON...
SOUTHWESTERN CHARLESTON AND SOUTH CENTRAL DORCHESTER COUNTIES WILL
EXPIRE AT 730 PM EDT...
AT 727 PM EDT...RADAR INDICATED THAT THE SEVERE THUNDERSTORM WHICH
PROMPTED THE WARNING HAD MOVED OUT OF THE WARNED AREA...THUS THE
SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE.
HOWEVER...ANOTHER SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR
PORTIONS OF DORCHESTER AND CHARLESTON COUNTIES.
QUARTER SIZE HAIL WAS REPORTED WITH THIS LINE NEAR GIVHANS FERRY
ALONG WITH STRONG WINDS BLOWING DOWN 8 INCH DIAMETER LIMBS AT 726 PM.
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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST SOUTH CAROLINA.
LAT...LON 3259 8011 3254 8017 3255 8020 3252 8033
3262 8045 3277 8048 3297 8045 3304 8038
3306 8030 3260 8004
TIME...MOT...LOC 2327Z 244DEG 22KT 3318 8022 3273 8031
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 2:57 PM EDT | Special Weather Statement | CHS | Berkeley | 33 min |
| May 22, 3:34 PM EDT | Special Weather Statement | CHS | Berkeley | 26 min |
| May 22, 3:44 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Charleston | 61 min |
| May 22, 5:06 PM EDT | Special Weather Statement | CHS | Hampton | 24 min |
| May 22, 5:14 PM EDT | Special Weather Statement | CHS | Charleston | 31 min |
| May 22, 5:19 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Charleston, Dorchester | 56 min |
| May 22, 5:28 PM EDT | Severe Thunderstorm Warning | CHS | Beaufort, Jasper | 45 min |
| May 22, 6:16 PM EDT | Special Weather Statement | CHS | Berkeley | 59 min |
| May 22, 6:21 PM EDT | Special Weather Statement | CHS | Colleton | 24 min |
| May 22, 6:51 PM EDT | Special Weather Statement | CHS | Berkeley | 54 min |
| May 22, 7:00 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Dorchester | 60 min |
| May 22, 7:20 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Charleston, Dorchester | 55 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.