Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 69, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at May 17, 2012, 3:04 PM EDT for Charleston County, Colleton County, South Carolina. It was in force for 17 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
- May 17, 2012, 3:04 PM EDT (19:04 UTC)
- Expired
- May 17, 2012, 3:21 PM EDT
- In force
- 17 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
Counties Charleston County, SC, Colleton County, SC
The radar
The Charleston,SC radar (KCLX), 56 km from the middle of the area, began a volume at 19:04 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 nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 7.1 hours before the alert went out and 45 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
- 1254 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 592 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -0.8
The text
As transmitted, in the capitals the NWS used until 2016.
627 WUUS52 KCHS 171904 SVRCHS SCC019-029-171945- /O.NEW.KCHS.SV.W.0069.120517T1904Z-120517T1945Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHARLESTON SC 304 PM EDT THU MAY 17 2012 THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL CHARLESTON COUNTY IN SOUTHEAST SOUTH CAROLINA... EAST CENTRAL COLLETON COUNTY IN SOUTHEAST SOUTH CAROLINA... * UNTIL 345 PM EDT * AT 305 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM...NEAR JACKSONBORO...MOVING SOUTHEAST AT 5 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... ASHEPOO...GREEN POND...JACKSONBORO...JACKSONBORO... 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 3279 8032 3265 8048 3273 8065 3288 8053 TIME...MOT...LOC 1905Z 303DEG 5KT 3276 8050 $$
2 follow-up statements
926 WWUS52 KCHS 171913 SVSCHS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLESTON SC 313 PM EDT THU MAY 17 2012 SCC019-029-171945- /O.CON.KCHS.SV.W.0069.000000T0000Z-120517T1945Z/ CHARLESTON SC-COLLETON SC- 313 PM EDT THU MAY 17 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR EAST CENTRAL COLLETON AND WEST CENTRAL CHARLESTON COUNTIES... AT 313 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM NEAR JACKSONBORO...MOVING SOUTHEAST AT 5 MPH. PREPARE NOW FOR THE FOLLOWING HAZARDS... DAMAGING WINDS IN EXCESS OF 60 MPH... HAIL UP TO QUARTER SIZE... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...ASHEPOO... GREEN POND AND JACKSONBORO...INCLUDING U.S. ROUTE 17. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMAIN ALERT. WEATHER CONDITIONS WILL RAPIDLY DETERIORATE AS STORMS APPROACH. SEEK SHELTER IN A STURDY BUILDING...MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO CHS.SKYWARN@NOAA.GOV. && LAT...LON 3279 8032 3265 8048 3273 8065 3288 8053 TIME...MOT...LOC 1913Z 303DEG 5KT 3276 8049 $$
999 WWUS52 KCHS 171921 SVSCHS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHARLESTON SC 321 PM EDT THU MAY 17 2012 SCC019-029-171931- /O.CAN.KCHS.SV.W.0069.000000T0000Z-120517T1945Z/ CHARLESTON SC-COLLETON SC- 321 PM EDT THU MAY 17 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL COLLETON AND WEST CENTRAL CHARLESTON COUNTIES HAS BEEN CANCELLED... AT 321 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. 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 3279 8032 3265 8048 3273 8065 3288 8053 TIME...MOT...LOC 1921Z 303DEG 5KT 3275 8048 $$
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 8:03 PM EDT | Areal Flood Advisory | CHS | Berkeley | 42 min |
| May 16, 8:27 PM EDT | Flash Flood Warning | CHS | Berkeley | 2 hr |
| May 16, 9:20 PM EDT | Areal Flood Advisory | CHS | Charleston | 2 hr |
| May 17, 1:25 AM EDT | Special Weather Statement | CHS | Charleston | 50 min |
| May 17, 2:11 AM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston | 3 hr |
| May 17, 3:19 AM EDT | Special Weather Statement | CHS | Charleston | 26 min |
| May 17, 4:35 AM EDT | Areal Flood Advisory | CHS | Charleston | 115 min |
| May 17, 12:53 PM EDT | Special Weather Statement | CHS | Berkeley | 37 min |
| May 17, 1:12 PM EDT | Areal Flood Advisory | CHS | Berkeley, Dorchester | 93 min |
| May 17, 1:25 PM EDT | Special Weather Statement | CHS | Dorchester | 65 min |
| May 17, 1:29 PM EDT | Special Weather Statement | CHS | Hampton | 61 min |
| May 17, 2:12 PM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston, Colleton, Dorchester | 93 min |
| May 17, 2:32 PM EDT | Special Weather Statement | CHS | Colleton, Hampton | 58 min |
| May 17, 2:49 PM EDT | Special Weather Statement | CHS | Jasper | 56 min |
| May 17, 4:45 PM EDT | Areal Flood Advisory | CHS | Jasper | 60 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.