Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 39, NWS Tallahassee, FL

May 13, 2012Walton County, Washington County, Florida

NWS Tallahassee, FL issued this tornado warning at May 13, 2012, 10:56 AM CDT for Walton County, Washington County, Florida. It was in force for 12 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, 10:56 AM CDT (15:56 UTC)
Expired
May 13, 2012, 11:08 AM CDT
In force
12 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Walton County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 10 km from the middle of the area, began a volume at 15:57 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, 3.9 hours before the alert went out and 155 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°0°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.

949 
WFUS52 KTAE 131556
TORTAE
FLC131-133-131630-
/O.NEW.KTAE.TO.W.0039.120513T1556Z-120513T1630Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1056 AM CDT SUN MAY 13 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN WALTON COUNTY IN THE PANHANDLE OF FLORIDA...
  SOUTHWESTERN WASHINGTON COUNTY IN THE PANHANDLE OF FLORIDA...

* UNTIL 1130 AM CDT

* AT 1052 AM CDT...A DEVELOPING TORNADO HAS BEEN DETECTED BY THE
  NATIONAL WEATHER SERVICE NEAR BRUCE...MOVING NORTH AT 10 MPH.

* THE TORNADO WILL IMPACT AREAS JUST WEST OF EBRO AND RED HEAD.

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 3055 8593 3050 8584 3045 8587 3043 8590
      3043 8591 3042 8594 3045 8597
TIME...MOT...LOC 1555Z 197DEG 7KT 3045 8593

$$

25-CAMP
1 follow-up statement
805 
WWUS52 KTAE 131608
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1108 AM CDT SUN MAY 13 2012

FLC131-133-131618-
/O.CAN.KTAE.TO.W.0039.000000T0000Z-120513T1630Z/
WASHINGTON FL-WALTON FL-
1108 AM CDT SUN MAY 13 2012

...THE TORNADO WARNING FOR SOUTHEASTERN WALTON AND SOUTHWESTERN
WASHINGTON COUNTIES IS CANCELLED...

THE STORM HAS WEAKENED AND IS NO LONGER SHOWING SIGNIFICANT ROTATION.

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 3055 8593 3050 8584 3045 8587 3043 8590
      3043 8591 3042 8594 3045 8597
TIME...MOT...LOC 1608Z 197DEG 7KT 3047 8592

$$

25-CAMP

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, 9:23 AM CDTTornado WarningTAEWalton32 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 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.