Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 9, NWS Jacksonville, FL

February 24, 20124 counties in Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Feb 24, 2012, 3:20 PM EST for 4 counties in Georgia. It was in force for 40 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
Feb 24, 2012, 3:20 PM EST (20:20 UTC)
Expired
Feb 24, 2012, 4:00 PM EST
In force
40 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Atkinson County, GA, Bacon County, GA, Coffee County, GA, Ware County, GA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 24, 12:04 PM ESTTornado WatchSPC7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 8.3 hours before the alert went out and 154 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, Jacksonville, FL at 12:00Z on 2012-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 593 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, Jacksonville, FL at 12:00Z on 2012-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 square meters per square second.1939587897Sfc1 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
593 J/kg
Mixed-layer CIN
-283 J/kg
Mixed-layer LCL
560 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

331 
WUUS52 KJAX 242020
SVRJAX
GAC003-005-069-299-242100-
/O.NEW.KJAX.SV.W.0009.120224T2020Z-120224T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
320 PM EST FRI FEB 24 2012

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN WARE COUNTY IN SOUTHEAST GEORGIA
  NORTHERN ATKINSON COUNTY IN SOUTHEAST GEORGIA
  SOUTHWESTERN BACON COUNTY IN SOUTHEAST GEORGIA
  SOUTHERN COFFEE COUNTY IN SOUTHEAST GEORGIA

* UNTIL 400 PM EST

* AT 320 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS
  IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES EAST OF
  WILLACOOCHEE...AND MOVING EAST AT 55 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  DOUGLAS AND NICHOLLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EST FRIDAY EVENING FOR
SOUTHEAST GEORGIA.

&&

LAT...LON 3138 8312 3163 8259 3144 8245 3123 8305
      3124 8306 3127 8304 3131 8307 3133 8307
      3135 8311
TIME...MOT...LOC 2020Z 251DEG 47KT 3136 8290

$$

SHASHY
2 follow-up statements
156 
WWUS52 KJAX 242034 RRA
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
334 PM EST FRI FEB 24 2012

GAC003-005-069-299-242100-
/O.CON.KJAX.SV.W.0009.000000T0000Z-120224T2100Z/
WARE GA-ATKINSON GA-BACON GA-COFFEE GA-
334 PM EST FRI FEB 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EST
FOR SOUTHEASTERN COFFEE...WESTERN BACON...NORTHERN ATKINSON AND
NORTHWESTERN WARE COUNTIES...

AT 335 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
TRACK A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...
AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8
MILES WEST OF BICKLEY...OR 9 MILES SOUTHEAST OF DOUGLAS...MOVING EAST
AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BICKLEY
AND NICHOLLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EST FRIDAY EVENING FOR
SOUTHEAST GEORGIA.

&&

LAT...LON 3155 8262 3156 8257 3143 8247 3123 8305
      3124 8306 3127 8304 3131 8307 3133 8307
TIME...MOT...LOC 2035Z 251DEG 47KT 3142 8268

$$

SHASHY
586 
WWUS52 KJAX 242056
SVSJAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
356 PM EST FRI FEB 24 2012

GAC003-005-069-299-242105-
/O.EXP.KJAX.SV.W.0009.000000T0000Z-120224T2100Z/
WARE GA-ATKINSON GA-BACON GA-COFFEE GA-
356 PM EST FRI FEB 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN COFFEE...WESTERN
BACON...NORTHERN ATKINSON AND NORTHWESTERN WARE COUNTIES WILL EXPIRE
AT 400 PM EST...

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT. ADDITIONAL WARNINGS ARE IN 
EFFECT FOR THE ORIGINAL STORM WARNED ON.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EST FRIDAY EVENING FOR
SOUTHEAST GEORGIA.

LAT...LON 3155 8262 3156 8257 3143 8247 3123 8305
      3124 8306 3127 8304 3131 8307 3133 8307
TIME...MOT...LOC 2055Z 251DEG 47KT 3151 8239

$$

SHASHY

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 4:54 AM ESTWind AdvisoryJAXAppling, Atkinson, Bacon, Brantley, Camden, Clinch and 6 more14 hr
Feb 24, 1:48 PM ESTSpecial Weather StatementJAXCoffee42 min
Feb 24, 2:18 PM ESTSpecial Weather StatementJAXAppling, Bacon, Coffee, Jeff Davis57 min
Feb 24, 3:07 PM ESTTornado WarningJAXAppling, Bacon, Pierce, Wayne38 min
Feb 24, 3:13 PM ESTSpecial Weather StatementJAXAtkinson32 min
Feb 24, 3:29 PM ESTSevere Thunderstorm WarningJAXAppling, Bacon, Pierce, Ware, Wayne46 min
Feb 24, 3:32 PM ESTSpecial Weather StatementJAXAtkinson, Pierce58 min
Feb 24, 3:51 PM ESTSevere Thunderstorm WarningJAXAppling, Atkinson, Bacon, Coffee, Pierce, Ware and 1 more39 min
Feb 24, 4:11 PM ESTTornado WarningJAXAppling, Bacon, Pierce, Wayne34 min
Feb 24, 4:48 PM ESTSpecial Weather StatementJAXWayne22 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.