Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 42, NWS Tallahassee, FL

September 5, 2011Walton County, Florida; Geneva County, Alabama

NWS Tallahassee, FL issued this tornado warning at Sep 5, 2011, 4:42 AM CDT for Walton County, Florida; Geneva County, Alabama. It was in force for 17 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
Sep 5, 2011, 4:42 AM CDT (09:42 UTC)
Expired
Sep 5, 2011, 4:59 AM CDT
In force
17 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Geneva County, AL, Walton County, FL

The radar

The Eglin Afb radar (KEVX), 60 km from the middle of the area, began a volume at 09:42 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, 9.7 hours before the alert went out and 194 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 2011-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 289 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 2011-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.193958Sfc1 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
289 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
533 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

368 
WFUS52 KTAE 050942
TORTAE
ALC061-FLC131-051015-
/O.NEW.KTAE.TO.W.0042.110905T0942Z-110905T1015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
442 AM CDT MON SEP 5 2011

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL WALTON COUNTY IN THE PANHANDLE OF FLORIDA...
  WESTERN GENEVA COUNTY IN SOUTHEAST ALABAMA...

* UNTIL 515 AM CDT

* AT 437 AM CDT...A DEVELOPING TORNADO HAS BEEN DETECTED BY THE
  NATIONAL WEATHER SERVICE NEAR NATURAL BRIDGE...MOVING NORTH AT 40
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HACODA...GANER...EARLYTOWN...PERA...WEEKS...LOWERY AND PINEY GROVE

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 3100 8623 3101 8620 3117 8620 3118 8619
      3117 8605 3095 8614 3096 8622
TIME...MOT...LOC 0942Z 183DEG 36KT 3101 8618

$$
1 follow-up statement
404 
WWUS52 KTAE 050959
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
459 AM CDT MON SEP 5 2011

ALC061-FLC131-051008-
/O.CAN.KTAE.TO.W.0042.000000T0000Z-110905T1015Z/
GENEVA AL-WALTON FL-
459 AM CDT MON SEP 5 2011

...THE TORNADO WARNING FOR WEST CENTRAL WALTON AND WESTERN GENEVA 
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 3100 8623 3101 8620 3117 8620 3118 8619
      3117 8605 3095 8614 3096 8622
TIME...MOT...LOC 0958Z 183DEG 36KT 3117 8617

$$

25-CAMP

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 7:13 PM CDTSpecial Marine WarningTAE62 min
Sep 4, 8:20 PM CDTSpecial Marine WarningTAE55 min
Sep 4, 9:52 PM CDTSpecial Marine WarningTAE38 min
Sep 4, 10:24 PM CDTSpecial Marine WarningTAE37 min
Sep 5, 2:53 AM CDTWind AdvisoryTAEBay, Dixie, Franklin, Gulf, Jefferson, Taylor and 2 more18 hr
Sep 5, 4:47 AM CDTGale WarningTAE4 hr
Sep 5, 9:14 AM CDTGale WarningTAE17 hr
Sep 5, 9:14 AM CDTSmall Craft AdvisoryTAE30 hr
Sep 5, 12:14 PM CDTSpecial Weather StatementTAEHolmes31 min
Sep 5, 12:38 PM CDTSpecial Marine WarningTAE52 min
Sep 5, 1:02 PM CDTSevere Thunderstorm WarningTAEWalton43 min
Sep 5, 1:27 PM CDTSpecial Marine WarningTAE63 min
Sep 5, 1:36 PM CDTSevere Thunderstorm WarningTAEBay, Washington39 min
Sep 5, 1:41 PM CDTSevere Thunderstorm WarningTAEHolmes, Walton49 min
Sep 5, 1:52 PM CDTSevere Thunderstorm WarningTAEHolmes, Jackson, Washington38 min
Sep 5, 2:17 PM CDTSevere Thunderstorm WarningTAEBay, Calhoun, Holmes, Jackson, Washington43 min
Sep 5, 2:38 PM CDTSevere Thunderstorm WarningTAEMadison, Taylor36 min
Sep 5, 2:58 PM CDTSevere Thunderstorm WarningTAEJefferson, Leon47 min
Sep 5, 3:05 PM CDTSevere Thunderstorm WarningTAEWalton, Washington40 min
Sep 5, 3:11 PM CDTCoastal Flood AdvisoryTAEDixie, Jefferson, Taylor, Wakulla19 hr
Sep 5, 3:37 PM CDTSevere Thunderstorm WarningTAEHolmes, Walton53 min
Sep 5, 3:39 PM CDTSevere Thunderstorm WarningTAELeon, Wakulla11 min
Sep 5, 3:46 PM CDTSevere Thunderstorm WarningTAEDixie, Lafayette, Taylor29 min
Sep 5, 3:59 PM CDTSevere Thunderstorm WarningTAEJefferson, Taylor31 min
Sep 5, 4:03 PM CDTSevere Thunderstorm WarningTAEJackson42 min
Sep 5, 4:20 PM CDTSevere Thunderstorm WarningTAEJefferson, Madison, Taylor40 min
Sep 5, 4:24 PM CDTSevere Thunderstorm WarningTAEBay, Holmes, Walton, Washington51 min
Sep 5, 5:16 PM CDTSevere Thunderstorm WarningTAEMadison, Taylor29 min
Sep 5, 5:29 PM CDTSevere Thunderstorm WarningTAEBay, Calhoun, Holmes, Jackson, Washington46 min
Sep 5, 6:25 PM CDTSevere Thunderstorm WarningTAELafayette, Madison, Taylor50 min
Sep 5, 8:07 AM CDTTornado WarningTAECoffee25 min
Sep 5, 1:53 PM CDTSevere Thunderstorm WarningTAEHenry37 min
Sep 5, 2:01 PM CDTSevere Thunderstorm WarningTAECoffee, Dale, Houston44 min
Sep 5, 2:35 PM CDTSevere Thunderstorm WarningTAEGeneva, Henry, Houston40 min
Sep 5, 2:46 PM CDTSevere Thunderstorm WarningTAEDale, Henry44 min
Sep 5, 3:12 PM CDTSevere Thunderstorm WarningTAEHenry, Houston48 min
Sep 5, 4:17 PM CDTSevere Thunderstorm WarningTAEDale, Houston43 min
Sep 5, 5:42 PM CDTSevere Thunderstorm WarningTAEGeneva, Houston48 min

Nearby

Tornado Warnings in Florida, 2011Tornado Warnings in Alabama, 2011Every tornado warning in 2011Tornadoes in 2011

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.