Alert archive / Alabama / Tornado Warnings in 2012

Tornado Warning 58, NWS Tallahassee, FL

August 30, 2012Geneva County, Alabama; Walton County, Florida

NWS Tallahassee, FL issued this tornado warning at Aug 30, 2012, 4:37 AM CDT for Geneva County, Alabama; Walton County, Florida. It was in force for 43 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 30, 2012, 4:37 AM CDT (09:37 UTC)
Expired
Aug 30, 2012, 5:20 AM CDT
In force
43 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Geneva County, AL, Walton County, FL

The radar

The Eglin Afb radar (KEVX), 62 km from the middle of the area, began a volume at 09:39 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 9.6 hours before the alert went out and 189 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 2012-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 837 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 2012-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.1939Sfc1 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
837 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.4

Open this sounding in Storm Lab

The text

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

730 
WFUS52 KTAE 300937
TORTAE
ALC061-FLC131-301030-
/O.NEW.KTAE.TO.W.0058.120830T0937Z-120830T1030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
437 AM CDT THU AUG 30 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEAST WALTON COUNTY IN THE PANHANDLE OF FLORIDA...  
  WESTERN GENEVA COUNTY IN SOUTHEAST ALABAMA...

* UNTIL 530 AM CDT

* AT 435 AM CDT...A DEVELOPING TORNADO HAS BEEN DETECTED BY THE
  NATIONAL WEATHER SERVICE 12 MILES SOUTH OF SAMSON...OR NEAR
  DARLINGTON...MOVING NORTH AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  GASKIN...HACODA...GANER...LOGAN FIELD MUNICIPAL A/P...EARLYTOWN...
  PERA...WEEKS...PINEY GROVE AND LOWERY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! LEAVE MOBILE HOMES AND VEHICLES FOR SAFER STRUCTURES.
MOVE TO A HALLWAY OR CLOSET ON THE LOWEST FLOOR AWAY FROM WINDOWS AND
OUTSIDE WALLS.

&&

LAT...LON 3119 8613 3118 8612 3119 8612 3119 8602
      3119 8601 3100 8602 3099 8603 3089 8603
      3088 8614 3115 8620 3119 8620
TIME...MOT...LOC 0938Z 175DEG 25KT 3096 8608

$$

08-LAMERS
3 follow-up statements
901 
WWUS52 KTAE 300955
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
555 AM EDT THU AUG 30 2012

FLC131-301005-
/O.CAN.KTAE.TO.W.0058.000000T0000Z-120830T1030Z/
WALTON FL-
455 AM CDT THU AUG 30 2012

...THE TORNADO WARNING FOR NORTHEAST WALTON COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF WALTON 
COUNTY...INTO GENEVA COUNTY.

LAT...LON 3119 8613 3118 8612 3119 8612 3119 8602
      3102 8606 3102 8613 3115 8619 3119 8619
TIME...MOT...LOC 0955Z 173DEG 24KT 3107 8610

$$

ALC061-301030-
/O.CON.KTAE.TO.W.0058.000000T0000Z-120830T1030Z/
GENEVA AL-
455 AM CDT THU AUG 30 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 AM CDT FOR WESTERN
GENEVA COUNTY...

AT 453 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR GANER...MOVING
NORTH AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LOGAN 
FIELD MUNICIPAL AIRPORT...SAMSON...EARLYTOWN...PERA...WEEKS...PINEY 
GROVE AND LOWERY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3119 8613 3118 8612 3119 8612 3119 8602
      3102 8606 3102 8613 3115 8619 3119 8619
TIME...MOT...LOC 0955Z 173DEG 24KT 3107 8610

$$

08-LAMERS
292 
WWUS52 KTAE 301009
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
509 AM CDT THU AUG 30 2012

ALC061-301030-
/O.CON.KTAE.TO.W.0058.000000T0000Z-120830T1030Z/
GENEVA AL-
509 AM CDT THU AUG 30 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 AM CDT FOR
NORTHWESTERN GENEVA COUNTY...

AT 507 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR WEEKS...MOVING
NORTH AT 30 MPH.

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE 
INDICATED COUNTY.

&&

LAT...LON 3111 8608 3111 8614 3119 8618 3119 8613
      3118 8612 3119 8612 3119 8605
TIME...MOT...LOC 1010Z 173DEG 24KT 3117 8611

$$

08-LAMERS
481 
WWUS52 KTAE 301020
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
520 AM CDT THU AUG 30 2012

ALC061-301029-
/O.CAN.KTAE.TO.W.0058.000000T0000Z-120830T1030Z/
GENEVA AL-
520 AM CDT THU AUG 30 2012

...THE TORNADO WARNING FOR NORTHWESTERN GENEVA COUNTY IS CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF NORTHWEST 
GENEVA COUNTY INTO SOUTHWEST COFFEE COUNTY.

RELAY REPORTS OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE AT 
(8 5 0) 9 4 2 8 8 3 3. OR...CONTACT LAW ENFORCEMENT.

LAT...LON 3111 8608 3111 8614 3119 8618 3119 8613
      3118 8612 3119 8612 3119 8605
TIME...MOT...LOC 1019Z 173DEG 24KT 3123 8612

$$

08-LAMERS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 2:38 AM CDTTornado WarningTAECoffee, Geneva35 min
Aug 30, 5:01 AM CDTTornado WarningTAECoffee29 min
Aug 30, 1:49 AM CDTTornado WarningTAEWalton26 min
Aug 30, 1:59 AM CDTTornado WarningTAEWalton31 min
Aug 30, 2:31 AM CDTTornado WarningTAEWalton29 min
Aug 30, 3:55 AM CDTSpecial Marine WarningTAE35 min
Aug 30, 4:07 AM CDTTornado WarningTAEWalton23 min
Aug 30, 6:02 AM CDTTornado WarningTAEBay, Washington28 min
Aug 30, 9:17 AM CDTSpecial Weather StatementTAEWalton28 min
Aug 30, 9:28 AM CDTTornado WarningTAEWalton32 min
Aug 30, 10:53 AM CDTSpecial Marine WarningTAE22 min
Aug 30, 10:56 AM CDTSpecial Weather StatementTAEWalton34 min
Aug 30, 12:05 PM CDTSpecial Marine WarningTAE40 min

Nearby

Tornado Warnings in Alabama, 2012Tornado Warnings in Florida, 2012Every tornado warning in 2012Tornadoes 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.