Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 54, NWS Tallahassee, FL

August 30, 2012Walton County, Florida

NWS Tallahassee, FL issued this tornado warning at Aug 30, 2012, 1:59 AM CDT for Walton County, Florida. It was in force for 31 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, 1:59 AM CDT (06:59 UTC)
Expired
Aug 30, 2012, 2:30 AM CDT
In force
31 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

County Walton County, FL

The radar

The Eglin Afb radar (KEVX), 39 km from the middle of the area, began a volume at 07:02 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, 7.0 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°0°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.

071 
WFUS52 KTAE 300659
TORTAE
FLC131-300730-
/O.NEW.KTAE.TO.W.0054.120830T0659Z-120830T0730Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
159 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 230 AM CDT

* AT 153 AM CDT...A DEVELOPING TORNADO HAS BEEN DETECTED BY THE
  NATIONAL WEATHER SERVICE NEAR NEW HOME...MOVING NORTH AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PLEASANT RIDGE...ALPINE HEIGHTS...OAKWOOD HILLS...LIBERTY...SAND
  HILL...CLUSTER SPRINGS...GORDON AND CANEY CREEK

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.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. IF YOU WAIT TO SEE OR HEAR
IT COMING...IT MAY BE TOO LATE!.

&&

LAT...LON 3093 8629 3092 8611 3061 8618 3061 8624
TIME...MOT...LOC 0659Z 180DEG 31KT 3067 8622

$$

17-GOULD
1 follow-up statement
195 
WWUS52 KTAE 300712
SVSTAE

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

FLC131-300730-
/O.CON.KTAE.TO.W.0054.000000T0000Z-120830T0730Z/
WALTON FL-
212 AM CDT THU AUG 30 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 AM CDT FOR CENTRAL 
WALTON COUNTY...

AT 207 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR ALPINE HEIGHTS... 
MOVING NORTH AT 30 MPH...AND RECENT RADAR TRENDS INDICATE THAT THIS 
STORM COULD BE STRENGTHENING. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OAKWOOD
HILLS...LIBERTY...SAND HILL...CLUSTER SPRINGS...GORDON AND CANEY
CREEK

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

RELAY REPORTS OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN
TALLAHASSEE AT (8 5 0) 9 4 2 8 8 3 3. OR...YOU MAY CONTACT THE
NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT.
THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3091 8615 3070 8621 3070 8625 3080 8627
      3092 8629
TIME...MOT...LOC 0711Z 176DEG 25KT 3073 8623

$$

17-GOULD

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, 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, 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 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.