Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 9, NWS Tallahassee, FL

January 21, 20125 counties in Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at Jan 21, 2012, 8:28 PM EST for 5 counties in Georgia. It was in force for 32 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
Jan 21, 2012, 8:28 PM EST (01:28 UTC)
Expired
Jan 21, 2012, 9:00 PM EST
In force
32 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Brooks County, GA, Colquitt County, GA, Cook County, GA, Lowndes County, GA, Thomas County, GA

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 1.5 hours before the alert went out and 103 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.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2012-01-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 670 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2012-01-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
670 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
822 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

014 
WUUS52 KTAE 220128
SVRTAE
GAC027-071-075-185-275-220200-
/O.NEW.KTAE.SV.W.0009.120122T0128Z-120122T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
828 PM EST SAT JAN 21 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BROOKS COUNTY IN SOUTH CENTRAL GEORGIA...
  SOUTHERN COLQUITT COUNTY IN SOUTH CENTRAL GEORGIA...
  SOUTHERN COOK COUNTY IN SOUTH CENTRAL GEORGIA...
  NORTHWESTERN LOWNDES COUNTY IN SOUTH CENTRAL GEORGIA...
  NORTHEASTERN THOMAS COUNTY IN SOUTH CENTRAL GEORGIA...

* UNTIL 900 PM EST

* AT 824 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
  15 MILES WEST OF SPARKS TO 11 MILES NORTH OF PAVO TO 9 MILES       
  NORTHWEST OF PAVO... MOVING SOUTHEAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO      
  ADEL...ELLENTON...BERLIN...BARNEY...AND HAHIRA.

  THIS INCLUDES PARTS OF INTERSTATE 75 IN LOWNDES AND COOK
  COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THEIR PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING.
PEOPLE OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM
WINDOWS.

&&

LAT...LON 3119 8337 3096 8335 3086 8369 3110 8393
      3114 8373 3125 8373
TIME...MOT...LOC 0127Z 303DEG 29KT 3122 8365 3110 8364
          3104 8382

$$

08-LAMERS
2 follow-up statements
722 
WWUS52 KTAE 220148
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
848 PM EST SAT JAN 21 2012

GAC027-071-075-185-275-220200-
/O.CON.KTAE.SV.W.0009.000000T0000Z-120122T0200Z/
THOMAS GA-LOWNDES GA-BROOKS GA-COLQUITT GA-COOK GA-
848 PM EST SAT JAN 21 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EST
FOR SOUTHERN COOK...SOUTHEASTERN COLQUITT...NORTHERN BROOKS...
NORTHWESTERN LOWNDES AND NORTHEASTERN THOMAS COUNTIES...

AT 843 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 REED BINGHAM STATE PARK TO BERLIN TO ENON...MOVING
SOUTHEAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAND 
HILL...PAVO...HOLLIS...SPARKS...BARNEY...COOK COUNTY AIRPORT...PINE 
VALLEY...MORVEN...HAHIRA...GREGGS...CECIL AND ADEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO HAIL AND DAMAGING WINDS...CLOUD TO GROUND LIGHTNING 
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS 
ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR 
THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 3109 8368 3117 8364 3118 8337 3096 8335
      3086 8369 3104 8387
TIME...MOT...LOC 0148Z 308DEG 22KT 3113 8356 3102 8358
          3096 8379

$$

08-LAMERS
754 
WWUS52 KTAE 220201
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
901 PM EST SAT JAN 21 2012

GAC027-071-075-185-275-220210-
/O.EXP.KTAE.SV.W.0009.000000T0000Z-120122T0200Z/
THOMAS GA-LOWNDES GA-BROOKS GA-COLQUITT GA-COOK GA-
901 PM EST SAT JAN 21 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN COOK...SOUTHEASTERN
COLQUITT...NORTHERN BROOKS...NORTHWESTERN LOWNDES AND NORTHEASTERN
THOMAS COUNTIES HAS EXPIRED...

THE LINE OF THUNDERSTORMS THAT PROMPTED THE WARNING HAS WEAKENED 
BELOW SEVERE LIMITS. FREQUENT CLOUD TO GROUND LIGHTNING AND SOME 
GUSTY WINDS TO AROUND 40 TO 50 MPH WILL BE POSSIBLE WITH THIS LINE 
OF STORMS AS IT MOVES SOUTHEAST TOWARDS QUITMAN AND VALDOSTA.

LAT...LON 3109 8368 3117 8364 3118 8337 3096 8335
      3086 8369 3104 8387
TIME...MOT...LOC 0148Z 308DEG 22KT 3113 8356 3102 8358
          3096 8379

$$

08-LAMERS

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 21, 7:29 PM ESTSpecial Weather StatementTAEColquitt46 min
Jan 21, 8:07 PM ESTSevere Thunderstorm WarningTAEColquitt23 min
Jan 21, 8:57 PM ESTSpecial Weather StatementTAEBrooks, Lowndes63 min
Jan 21, 9:43 PM ESTSpecial Weather StatementTAELowndes47 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; the sounding from the Mesonet's radiosonde archive.