Alert archive / Georgia / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 409, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Dec 17, 2012, 1:57 PM EST for Decatur County, Grady County, Thomas County, Georgia. It was in force for 48 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, 1:57 PM EST (18:57 UTC)
- Expired
- Dec 17, 2012, 2:45 PM EST
- In force
- 48 min
- Issued by
- NWS Tallahassee, FL
- Area
- Storm-based polygon
Counties Decatur County, GA, Grady County, GA, Thomas County, GA
The radar
The Tallahassee radar (KTLH), 63 km from the middle of the area, began a volume at 18:59 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, 2:02 PM EST | TSTM WND DMG | 2 N Cairo, GA | TREES DOWN ON HWY 93 NORTH. |
| Dec 17, 2:16 PM EST | TSTM WND DMG | 1 E Thomasville, GA | POWER LINES DOWN ON JACKSON STREET EAST OF DOWNTOWN. |
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
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 7.0 hours before the alert went out and 61 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
- 4 J/kg
- Mixed-layer CIN
- -279 J/kg
- Mixed-layer LCL
- 587 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 186 m²/s²
- 0-3 km storm-relative helicity
- 390 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
739
WUUS52 KTAE 171857
SVRTAE
GAC087-131-275-171945-
/O.NEW.KTAE.SV.W.0409.121217T1857Z-121217T1945Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
157 PM EST MON DEC 17 2012
THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
THOMAS COUNTY IN SOUTH CENTRAL GEORGIA...
SOUTHEASTERN DECATUR COUNTY IN SOUTHWEST GEORGIA...
GRADY COUNTY IN SOUTHWEST GEORGIA...
* UNTIL 245 PM EST
* AT 154 PM EST...THE NATIONAL WEATHER SERVICE HAS DETECTED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
OCHLOCKNEE TO 19 MILES SOUTHWEST OF WHIGHAM...OR ALONG A LINE
EXTENDING FROM QUALITY TO DOGTOWN...AND MOVING EAST AT 40 MPH.
THESE STORMS HAVE A HISTORY OF BLOWING TREES DOWN IN DECATUR COUNTY.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CAIRO...COOLIDGE...THOMASVILLE AND BOSTON
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY. PEOPLE OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT
AWAY FROM WINDOWS.
&&
LAT...LON 3066 8375 3070 8464 3108 8423 3108 8401
3104 8399 3103 8373
TIME...MOT...LOC 1857Z 281DEG 35KT 3101 8405 3070 8453
$$
42-DVD1 follow-up statement
503 WWUS52 KTAE 171927 SVSTAE SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TALLAHASSEE FL 227 PM EST MON DEC 17 2012 GAC087-171937- /O.CAN.KTAE.SV.W.0409.000000T0000Z-121217T1945Z/ DECATUR GA- 227 PM EST MON DEC 17 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DECATUR COUNTY IS CANCELLED... A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST MONDAY EVENING FOR NORTHWEST FLORIDA AND SOUTHWESTERN GEORGIA. LAT...LON 3066 8375 3069 8432 3085 8419 3103 8373 TIME...MOT...LOC 1927Z 280DEG 34KT 3097 8376 3066 8424 $$ GAC131-275-171945- /O.CON.KTAE.SV.W.0409.000000T0000Z-121217T1945Z/ THOMAS GA-GRADY GA- 227 PM EST MON DEC 17 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EST FOR SOUTHEASTERN GRADY AND THOMAS COUNTIES... AT 222 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM PATTEN TO ROCKY HILL...MOVING EAST AT 40 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MONCRIEF...NEWARK...FIVE POINTS...EASON...METCALF...EVERETT AND BOSTON PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST MONDAY EVENING FOR NORTHWEST FLORIDA AND SOUTHWESTERN GEORGIA. && LAT...LON 3066 8375 3069 8432 3085 8419 3103 8373 TIME...MOT...LOC 1927Z 280DEG 34KT 3097 8376 3066 8424 $$ 42-DVD
The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 17, 12:53 PM EST | Severe Thunderstorm Warning | TAE | Seminole | 37 min |
| Dec 17, 1:19 PM EST | Severe Thunderstorm Warning | TAE | Decatur, Grady, Seminole | 41 min |
| Dec 17, 1:47 PM EST | Special Weather Statement | TAE | Ben Hill, Berrien, Colquitt, Cook, Irwin, Tift | 43 min |
| Dec 17, 2:24 PM EST | Severe Thunderstorm Warning | TAE | Berrien, Brooks, Cook, Lanier, Lowndes | 66 min |
| Dec 17, 3:28 PM EST | Special Weather Statement | TAE | Lowndes | 47 min |
| Dec 17, 3:55 PM EST | Severe Thunderstorm Warning | TAE | Lowndes | 50 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.