Alert archive / Georgia / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 237, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Aug 17, 2012, 2:27 PM EDT for Chatham County, Georgia; Jasper County, South Carolina. It was in force for 28 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
- Aug 17, 2012, 2:27 PM EDT (18:27 UTC)
- Expired
- Aug 17, 2012, 2:55 PM EDT
- In force
- 28 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
Counties Chatham County, GA, Jasper County, SC
The radar
The Charleston,SC radar (KCLX), 65 km from the middle of the area, began a volume at 18:29 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 nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 6.5 hours before the alert went out and 129 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
- 894 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 1044 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
278
WUUS52 KCHS 171827
SVRCHS
GAC051-SCC053-171930-
/O.NEW.KCHS.SV.W.0237.120817T1827Z-120817T1930Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
227 PM EDT FRI AUG 17 2012
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN CHATHAM COUNTY IN SOUTHEAST GEORGIA...
SOUTH CENTRAL JASPER COUNTY IN SOUTHEAST SOUTH CAROLINA...
* UNTIL 330 PM EDT
* AT 227 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
SEVERE THUNDERSTORMS...ALONG A LINE EXTENDING FROM 9 MILES WEST OF
SAVANNAH HISTORIC DISTRICT TO SKIDAWAY ISLAND...MOVING EAST 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...
SANDFLY...SKIDAWAY ISLAND...ISLE OF HOPE...WASSAW ISLAND...
SAVANNAH...THUNDERBOLT...SAVANNAH HISTORIC DISTRICT...WILMINGTON
ISLAND...WHITEMARSH ISLAND...
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 3220 8118 3223 8103 3215 8096 3213 8096
3213 8094 3208 8091 3206 8088 3205 8089
3200 8083 3197 8085 3193 8091 3186 8106
TIME...MOT...LOC 1827Z 255DEG 17KT 3211 8122 3195 8103
$$2 follow-up statements
184
WWUS52 KCHS 171848
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
248 PM EDT FRI AUG 17 2012
GAC051-171858-
/O.CAN.KCHS.SV.W.0237.000000T0000Z-120817T1930Z/
CHATHAM GA-
248 PM EDT FRI AUG 17 2012
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHATHAM COUNTY HAS
BEEN CANCELLED...
LAT...LON 3210 8100 3209 8103 3209 8106 3211 8111
3214 8112 3215 8111 3216 8113 3219 8111
3221 8113 3222 8104 3215 8096 3213 8096
3213 8094 3206 8088 3204 8092
TIME...MOT...LOC 1848Z 255DEG 17KT 3213 8110 3197 8092
$$
SCC053-171930-
/O.CON.KCHS.SV.W.0237.000000T0000Z-120817T1930Z/
JASPER SC-
248 PM EDT FRI AUG 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR SOUTH CENTRAL JASPER COUNTY...
AT 248 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 7
MILES SOUTHWEST OF LIMEHOUSE TO 14 MILES SOUTH OF BELLINGER HILL
AREA...MOVING EAST AT 20 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...BELLINGER
HILL AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. MOVE INDOORS
IMMEDIATELY. IF THERE IS NO SAFE SHELTER AVAILABLE...STAY AWAY FROM
ISOLATED HIGH OBJECTS AND BODIES OF WATER. IF YOU CAN HEAR THUNDER...
YOU ARE WITHIN STRIKING DISTANCE.
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 3210 8100 3209 8103 3209 8106 3211 8111
3214 8112 3215 8111 3216 8113 3219 8111
3221 8113 3222 8104 3215 8096 3213 8096
3213 8094 3206 8088 3204 8092
TIME...MOT...LOC 1848Z 255DEG 17KT 3213 8110 3197 8092
$$025
WWUS52 KCHS 171855
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
255 PM EDT FRI AUG 17 2012
SCC053-171905-
/O.CAN.KCHS.SV.W.0237.000000T0000Z-120817T1930Z/
JASPER SC-
255 PM EDT FRI AUG 17 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL JASPER COUNTY
HAS BEEN CANCELLED...
AT 255 PM EDT...RADAR INDICATED THAT THE THUNDERSTORM THAT PROMPTED
THE WARNING HAD WEAKENED...THUS THE WARNING HAS BEEN CANCELED.
ALTHOUGH THE IMMEDIATE THREAT FOR DAMAGING WINDS AND LARGE HAIL HAS
ENDED...THUNDERSTORMS ARE STILL PRODUCING FREQUENT CLOUD TO GROUND
LIGHTNING STRIKES. THE SAFEST COURSE OF ACTION IS TO REMAIN INDOORS
UNTIL THE STORMS HAVE PASSED.
TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.
LAT...LON 3210 8100 3209 8103 3209 8106 3211 8111
3214 8112 3215 8111 3216 8113 3219 8111
3221 8113 3222 8104 3215 8096 3213 8096
3213 8094 3206 8088 3204 8092
TIME...MOT...LOC 1855Z 255DEG 17KT 3213 8106 3197 8088
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 12:23 PM EDT | Special Weather Statement | CHS | Long, McIntosh | 37 min |
| Aug 17, 12:31 PM EDT | Severe Thunderstorm Warning | CHS | Liberty, McIntosh | 59 min |
| Aug 17, 12:49 PM EDT | Special Marine Warning | CHS | 116 min | |
| Aug 17, 12:57 PM EDT | Special Weather Statement | CHS | Liberty, Long | 48 min |
| Aug 17, 12:59 PM EDT | Severe Thunderstorm Warning | CHS | Liberty, Long, McIntosh | 61 min |
| Aug 17, 1:38 PM EDT | Special Weather Statement | CHS | Bryan, Chatham | 52 min |
| Aug 17, 1:46 PM EDT | Severe Thunderstorm Warning | CHS | Bryan, Chatham | 59 min |
| Aug 17, 2:24 PM EDT | Special Weather Statement | CHS | Effingham | 36 min |
| Aug 17, 2:36 PM EDT | Special Weather Statement | CHS | Bulloch, Evans | 24 min |
| Aug 17, 3:42 PM EDT | Special Weather Statement | CHS | Jenkins, Screven | 33 min |
| Aug 17, 3:51 PM EDT | Special Weather Statement | CHS | Tattnall | 24 min |
| Aug 17, 4:36 PM EDT | Areal Flood Advisory | CHS | Long, Tattnall | 54 min |
| Aug 17, 5:38 PM EDT | Special Marine Warning | CHS | 67 min | |
| Aug 17, 6:22 PM EDT | Special Marine Warning | CHS | 83 min | |
| Aug 17, 3:15 PM EDT | Special Weather Statement | CHS | Jasper | 30 min |
| Aug 17, 3:52 PM EDT | Special Weather Statement | CHS | Colleton | 23 min |
| Aug 17, 4:01 PM EDT | Severe Thunderstorm Warning | CHS | Colleton, Dorchester | 59 min |
| Aug 17, 4:14 PM EDT | Special Weather Statement | CHS | Allendale | 31 min |
| Aug 17, 4:21 PM EDT | Severe Thunderstorm Warning | CHS | Allendale, Hampton | 39 min |
| Aug 17, 4:33 PM EDT | Special Weather Statement | CHS | Berkeley | 27 min |
| Aug 17, 4:56 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Charleston, Colleton, Dorchester | 64 min |
| Aug 17, 5:50 PM EDT | Special Weather Statement | CHS | Berkeley | 25 min |
| Aug 17, 6:19 PM EDT | Special Weather Statement | CHS | Berkeley | 26 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2012Severe 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.