Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 61, NWS Tallahassee, FL

August 30, 2012Walton County, Florida

NWS Tallahassee, FL issued this tornado warning at Aug 30, 2012, 9:28 AM CDT for Walton County, Florida. 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
Aug 30, 2012, 9:28 AM CDT (14:28 UTC)
Expired
Aug 30, 2012, 10:00 AM CDT
In force
32 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

County Walton County, FL

The radar

The Eglin Afb radar (KEVX), 25 km from the middle of the area, began a volume at 14:31 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 12:00Z, 2.5 hours before the alert went out and 180 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 12:00Z on 2012-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 948 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 12:00Z on 2012-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 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
948 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
605 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.5

Open this sounding in Storm Lab

The text

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

343 
WFUS52 KTAE 301428
TORTAE
FLC131-301500-
/O.NEW.KTAE.TO.W.0061.120830T1428Z-120830T1500Z/

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

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL WALTON COUNTY IN THE PANHANDLE OF FLORIDA...

* UNTIL 1000 AM CDT

* AT 927 AM CDT...A DEVELOPING TORNADO HAS BEEN DETECTED BY THE
  NATIONAL WEATHER SERVICE 13 MILES SOUTH OF DE FUNIAK SPRINGS...OR
  NEAR PORTLAND...MOVING NORTH AT 20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW
  HOME...ROCK HILL...PLEASANT RIDGE...DE FUNIAK SPRING AIRPORT...
  ARGYLE AND ALPINE HEIGHTS.

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 3076 8624 3076 8604 3070 8603 3050 8612
      3051 8624
TIME...MOT...LOC 1429Z 188DEG 18KT 3055 8617

$$

08-LAMERS
1 follow-up statement
932 
WWUS52 KTAE 301455
SVSTAE

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

FLC131-301505-
/O.EXP.KTAE.TO.W.0061.000000T0000Z-120830T1500Z/
WALTON FL-
955 AM CDT THU AUG 30 2012

...THE TORNADO WARNING FOR CENTRAL WALTON COUNTY WILL EXPIRE AT 1000
AM CDT...

THE ROTATION IN THE STORM THAT PROMPTED THE WARNING HAS WEAKENED.

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 3076 8624 3075 8605 3070 8603 3050 8612
      3051 8624
TIME...MOT...LOC 1455Z 188DEG 18KT 3068 8615

$$

08-LAMERS

The office that day

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

IssuedProductOfficeCountiesLasted
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, 4:37 AM CDTTornado WarningTAEWalton43 min
Aug 30, 6:02 AM CDTTornado WarningTAEBay, Washington28 min
Aug 30, 9:17 AM CDTSpecial Weather StatementTAEWalton28 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 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.