Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 40, NWS Tallahassee, FL

May 13, 2012Bay County, Walton County, Florida

NWS Tallahassee, FL issued this tornado warning at May 13, 2012, 10:56 AM CDT for Bay County, Walton County, Florida. It was in force for 14 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, 11:10 AM CDT
In force
14 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Bay County, FL, Walton County, FL

The radar

The Eglin Afb radar (KEVX), 27 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 164 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.

399 
WFUS52 KTAE 131556 RRA
TORTAE
FLC005-131-131630-
/O.NEW.KTAE.TO.W.0040.120513T1556Z-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...
  WEST CENTRAL BAY COUNTY IN THE PANHANDLE OF FLORIDA...             
  SOUTHEASTERN WALTON 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 INLET BEACH...MOVING NORTHEAST AT 10
  MPH.

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

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 3038 8603 3034 8591 3027 8600 3030 8607
TIME...MOT...LOC 1556Z 215DEG 9KT 3031 8602

$$

17-GOULD
1 follow-up statement
585 
WWUS52 KTAE 131610
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1110 AM CDT SUN MAY 13 2012

FLC005-131-131620-
/O.CAN.KTAE.TO.W.0040.000000T0000Z-120513T1630Z/
BAY FL-WALTON FL-
1110 AM CDT SUN MAY 13 2012

...THE TORNADO WARNING FOR SOUTHEASTERN WALTON AND WEST CENTRAL BAY 
COUNTIES IS CANCELLED...

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 3038 8603 3034 8591 3027 8600 3030 8607
TIME...MOT...LOC 1610Z 215DEG 9KT 3034 8600

$$

17-GOULD

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 WarningTAEWalton, Washington12 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.