Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 37, NWS Tallahassee, FL

May 13, 2012Walton County, Florida

NWS Tallahassee, FL issued this tornado warning at May 13, 2012, 9:23 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
May 13, 2012, 9:23 AM CDT (14:23 UTC)
Expired
May 13, 2012, 9:55 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), 19 km from the middle of the area, began a volume at 14:25 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, 2.4 hours before the alert went out and 173 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 2012-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 155 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 2012-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
155 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
760 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
205 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

279 
WFUS52 KTAE 131423
TORTAE
FLC131-131515-
/O.NEW.KTAE.TO.W.0037.120513T1423Z-120513T1515Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
923 AM CDT SUN MAY 13 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

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

* UNTIL 1015 AM CDT

* AT 920 AM CDT...A DEVELOPING TORNADO HAS BEEN DETECTED BY THE
  NATIONAL WEATHER SERVICE NEAR FREEPORT...OR NEAR BUNKER...MOVING
  NORTHEAST AT 5 MPH.

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

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 3054 8613 3048 8597 3042 8610 3044 8616
TIME...MOT...LOC 1423Z 215DEG 6KT 3044 8612

$$

17-GOULD
2 follow-up statements
605 
WWUS52 KTAE 131444
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
944 AM CDT SUN MAY 13 2012

FLC131-131515-
/O.CON.KTAE.TO.W.0037.000000T0000Z-120513T1515Z/
WALTON FL-
944 AM CDT SUN MAY 13 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT FOR SOUTH
CENTRAL WALTON COUNTY...

AT 938 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A POSSIBLE TORNADO.  THIS TORNADO WAS LOCATED ABOUT 5 MILES 
SOUTH OF FREEPORT...MOVING NORTH AT 5 MPH.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

&&

LAT...LON 3054 8613 3048 8597 3042 8610 3044 8616
TIME...MOT...LOC 1443Z 180DEG 6KT 3047 8610

$$

17-GOULD
987 
WWUS52 KTAE 131455
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
955 AM CDT SUN MAY 13 2012

FLC131-131503-
/O.CAN.KTAE.TO.W.0037.000000T0000Z-120513T1515Z/
WALTON FL-
955 AM CDT SUN MAY 13 2012

...THE TORNADO WARNING FOR SOUTH CENTRAL WALTON COUNTY IS
CANCELLED...

THE STORM TO THE SOUTH OF FREEPORT WHICH APPEARED TO BE TORNADIC IN 
NATURE HAS WEAKENED...AND IS NOT EXPECTED TO RE-DEVELOP AT THIS TIME.

LAT...LON 3054 8613 3048 8597 3042 8610 3044 8616
TIME...MOT...LOC 1453Z 215DEG 6KT 3048 8609

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 3:56 AM CDTTornado WarningTAEWashington34 min
May 13, 4:29 AM CDTTornado WarningTAEJackson, Washington31 min
May 13, 6:46 AM CDTSpecial Marine WarningTAE59 min
May 13, 7:05 AM CDTSpecial Marine WarningTAE55 min
May 13, 7:44 AM CDTSpecial Marine WarningTAE61 min
May 13, 8:02 AM CDTSpecial Marine WarningTAE28 min
May 13, 8:14 AM CDTSpecial Marine WarningTAE61 min
May 13, 8:34 AM CDTSpecial Marine WarningTAE56 min
May 13, 8:51 AM CDTSpecial Weather StatementTAEWalton39 min
May 13, 9:08 AM CDTSpecial Marine WarningTAE52 min
May 13, 9:31 AM CDTSpecial Marine WarningTAE59 min
May 13, 10:00 AM CDTSpecial Marine WarningTAE30 min
May 13, 10:52 AM CDTTornado WarningTAEWalton6 min
May 13, 10:56 AM CDTTornado WarningTAEWalton, Washington12 min
May 13, 10:56 AM CDTTornado WarningTAEBay, Walton14 min
May 13, 11:20 AM CDTSpecial Weather StatementTAEWashington55 min
May 13, 11:47 AM CDTSpecial Weather StatementTAEBay58 min
May 13, 11:52 AM CDTSpecial Marine WarningTAE53 min
May 13, 12:08 PM CDTSevere Thunderstorm WarningTAEBay52 min
May 13, 12:38 PM CDTSpecial Marine WarningTAE67 min
May 13, 12:50 PM CDTSpecial Weather StatementTAECalhoun40 min
May 13, 1:04 PM CDTAreal Flood AdvisoryTAEBay116 min
May 13, 1:23 PM CDTSpecial Weather StatementTAEGulf52 min
May 13, 1:29 PM CDTSpecial Weather StatementTAEGulf31 min
May 13, 2:29 PM CDTSpecial Weather StatementTAELeon31 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.