Alert archive / Georgia / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 249, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Dec 17, 2012, 2:46 PM EST for Bryan County, Bulloch County, Effingham County, Georgia. It was in force for 44 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
- Dec 17, 2012, 2:46 PM EST (19:46 UTC)
- Expired
- Dec 17, 2012, 3:30 PM EST
- In force
- 44 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
Counties Bryan County, GA, Bulloch County, GA, Effingham County, GA
The radar
The Charleston,SC radar (KCLX), 58 km from the middle of the area, began a volume at 19:45 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 |
|---|---|---|---|
| Dec 17, 3:28 PM EST | TSTM WND DMG | 2 E Eden, GA | SEVERAL PINE TREES WERE BLOWN DOWN ONTO POWER LINES ALONG GA ROUTE 17 NEAR ROEBLING AND JABIS JONES ROADS. TIME WAS ESTIMATED FROM RADAR DATA. |
| Dec 17, 3:32 PM EST | TSTM WND DMG | 3 Nnw Bloomingdale, GA | MULTIPLE TREES WERE BLOWN DOWN ALONG ATLANTA ROAD NEAR THE DAYTONA DRIVE INTERSECTION. ONE TREE FELL ON A HOUSE. TIME WAS ESTIMATED FROM RADAR DATA. |
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 |
|---|---|---|---|
| Dec 17, 1:30 PM EST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 7.8 hours before the alert went out and 158 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
771
WUUS52 KCHS 171946
SVRCHS
GAC029-031-103-172030-
/O.NEW.KCHS.SV.W.0249.121217T1946Z-121217T2030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
246 PM EST MON DEC 17 2012
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN BRYAN COUNTY IN SOUTHEAST GEORGIA...
SOUTHERN BULLOCH COUNTY IN SOUTHEAST GEORGIA...
EFFINGHAM COUNTY IN SOUTHEAST GEORGIA...
* UNTIL 330 PM EST
* AT 246 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM...7 MILES SOUTH OF REGISTER...MOVING EAST AT 50
MPH.
PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
* SOME LOCATIONS IN THE WARNING INCLUDE...
REGISTER...NEVILS...GEORGIA SOUTHERN...DENMARK...BAY...BROOKLET...
STILSON...LEEFIELD...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. IF YOU SEE
OR HEAR A TORNADO...MOVE QUICKLY TO AN INTERIOR ROOM IN A STURDY
STRUCTURE.
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 3236 8194 3249 8157 3249 8155 3250 8154
3255 8141 3257 8135 3256 8129 3252 8126
3252 8123 3218 8127 3215 8132 3216 8178
3224 8182 3228 8190 3227 8196
TIME...MOT...LOC 1946Z 262DEG 45KT 3227 8184
$$2 follow-up statements
815
WWUS52 KCHS 172003
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
303 PM EST MON DEC 17 2012
GAC029-031-103-172030-
/O.CON.KCHS.SV.W.0249.000000T0000Z-121217T2030Z/
BULLOCH GA-EFFINGHAM GA-BRYAN GA-
303 PM EST MON DEC 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EST
FOR NORTHWESTERN BRYAN...EFFINGHAM AND SOUTHERN BULLOCH COUNTIES...
AT 302 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM NEAR AKINS...MOVING EAST AT 50 MPH.
PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
AT 245 PM EST...LAW ENFORCEMENT REPORTED THAT A TREE WAS BLOWN DOWN
IN BULLOCH COUNTY...NEAR THE EVANS COUNTY LINE.
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BAY...
BLITCHTON...BROOKLET...CLYO...DENMARK...EDEN...EGYPT...GEORGIA
SOUTHERN...GUYTON...LEEFIELD...MARLOW...NEVILS...PINEORA...
REGISTER...SHAWNEE...SPRINGFIELD...STILLWELL AND STILSON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST MONDAY EVENING FOR
SOUTHEAST GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900
PM EST MONDAY EVENING FOR SOUTHEAST SOUTH CAROLINA.
&&
LAT...LON 3236 8194 3249 8157 3249 8155 3250 8154
3255 8141 3257 8135 3256 8129 3252 8126
3252 8123 3218 8127 3215 8132 3216 8178
3224 8182 3228 8190 3227 8196
TIME...MOT...LOC 2002Z 262DEG 45KT 3229 8160
$$015
WWUS52 KCHS 172027
SVSCHS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
327 PM EST MON DEC 17 2012
GAC029-031-103-172037-
/O.EXP.KCHS.SV.W.0249.000000T0000Z-121217T2030Z/
BULLOCH GA-EFFINGHAM GA-BRYAN GA-
327 PM EST MON DEC 17 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BRYAN...EFFINGHAM
AND SOUTHERN BULLOCH COUNTIES WILL EXPIRE AT 330 PM EST...
AT 327 PM EST...RADAR INDICATED THAT THE THUNDERSTORM WHICH PROMPTED
THE WARNING HAD WEAKENED...THUS THE SEVERE THUNDERSTORM WARNING HAS
BEEN ALLOWED TO EXPIRE.
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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST MONDAY EVENING FOR
SOUTHEAST GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900
PM EST MONDAY EVENING FOR SOUTHEAST SOUTH CAROLINA.
LAT...LON 3236 8194 3249 8157 3249 8155 3250 8154
3255 8141 3257 8135 3256 8129 3252 8126
3252 8123 3218 8127 3215 8132 3216 8178
3224 8182 3228 8190 3227 8196
TIME...MOT...LOC 2027Z 262DEG 45KT 3233 8123
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 17, 3:37 AM EST | Small Craft Advisory | CHS | 39 hr | |
| Dec 17, 3:09 PM EST | Special Weather Statement | CHS | Long | 36 min |
| Dec 17, 3:20 PM EST | Special Weather Statement | CHS | Long | 25 min |
| Dec 17, 3:31 PM EST | Special Weather Statement | CHS | Bryan, Chatham | 29 min |
| Dec 17, 3:41 PM EST | Special Weather Statement | CHS | Liberty, McIntosh | 49 min |
| Dec 17, 3:47 PM EST | Severe Thunderstorm Warning | CHS | Bryan, Chatham | 34 min |
| Dec 17, 4:01 PM EST | Special Marine Warning | CHS | 119 min | |
| Dec 17, 4:19 PM EST | Special Marine Warning | CHS | 116 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 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.