Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 7, NWS Tallahassee, FL

March 19, 2018Liberty County, Wakulla County, Florida

NWS Tallahassee, FL issued this tornado warning at Mar 19, 2018, 4:05 AM EDT for Liberty County, Wakulla County, Florida. It was in force for 25 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
Mar 19, 2018, 4:05 AM EDT (08:05 UTC)
Expired
Mar 19, 2018, 4:30 AM EDT
In force
25 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Liberty County, FL, Wakulla County, FL

The radar

The Tallahassee radar (KTLH), 54 km from the middle of the area, began a volume at 08:07 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, 8.1 hours before the alert went out and 57 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 2018-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 30 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 00:00Z on 2018-03-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.19395878Sfc1 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
30 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
645 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
18 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

510 
WFUS52 KTAE 190805
TORTAE
FLC077-129-190830-
/O.NEW.KTAE.TO.W.0007.180319T0805Z-180319T0830Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
405 AM EDT MON MAR 19 2018

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  West central Wakulla County in Big Bend of Florida...
  Southeastern Liberty County in Big Bend of Florida...

* Until 430 AM EDT
    
* At 405 AM EDT, a severe thunderstorm capable of producing a tornado
  was located 16 miles east of Stonemill Creek, or 20 miles southeast
  of Blountstown, moving east at 45 mph.

  HAZARD...Tornado and quarter size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This tornadic thunderstorm will remain over mainly rural areas of
  west central Wakulla and southeastern Liberty Counties, including
  the following locations: East Camp, Jewel Fire Tower, Poplar Camp,
  Smith Creek, Kern, Wilma, Vilas, Jensen Place, Nixon Garden and
  Twin Pole.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3011 8501 3026 8494 3020 8449 3001 8463
      3001 8467
TIME...MOT...LOC 0805Z 276DEG 39KT 3016 8491 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

ADL

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 19, 2:04 AM EDTSpecial Weather StatementTAEHolmes41 min
Mar 19, 2:20 AM EDTSpecial Weather StatementTAEBay40 min
Mar 19, 2:42 AM EDTSpecial Weather StatementTAEHolmes, Jackson, Washington63 min
Mar 19, 3:32 AM EDTSpecial Weather StatementTAECalhoun, Gadsden, Jackson, Liberty58 min
Mar 19, 3:41 AM EDTSevere Thunderstorm WarningTAECalhoun, Gadsden, Jackson, Liberty49 min
Mar 19, 4:12 AM EDTSpecial Weather StatementTAEJefferson, Leon48 min
Mar 19, 4:22 AM EDTSevere Thunderstorm WarningTAEGadsden, Jefferson, Leon, Wakulla23 min
Mar 19, 4:28 AM EDTTornado WarningTAELiberty, Wakulla12 min
Mar 19, 4:37 AM EDTGale WatchTAE11 hr
Mar 19, 4:37 AM EDTSmall Craft AdvisoryTAE33 hr
Mar 19, 4:37 AM EDTSmall Craft AdvisoryTAE3 days
Mar 19, 4:43 AM EDTSevere Thunderstorm WarningTAEFranklin, Jefferson, Leon, Taylor, Wakulla32 min
Mar 19, 4:48 AM EDTRip Current StatementTAEBay, Franklin, Gulf, Walton45 hr
Mar 19, 4:58 AM EDTSpecial Marine WarningTAE62 min
Mar 19, 5:06 AM EDTSpecial Weather StatementTAELafayette, Taylor, Wakulla54 min
Mar 19, 5:27 AM EDTSevere Thunderstorm WarningTAEDixie, Lafayette, Taylor63 min
Mar 19, 5:57 AM EDTSpecial Marine WarningTAE33 min
Mar 19, 6:04 AM EDTSpecial Weather StatementTAEDixie41 min
Mar 19, 6:28 AM EDTSpecial Marine WarningTAE62 min
Mar 19, 7:26 AM EDTSpecial Marine WarningTAE49 min
Mar 19, 12:08 PM EDTSpecial Weather StatementTAEWalton52 min
Mar 19, 12:12 PM EDTSpecial Marine WarningTAE48 min
Mar 19, 12:25 PM EDTSpecial Weather StatementTAEBay50 min
Mar 19, 12:42 PM EDTSpecial Weather StatementTAECalhoun48 min
Mar 19, 1:05 PM EDTSpecial Marine WarningTAE40 min
Mar 19, 1:23 PM EDTSpecial Weather StatementTAEWashington52 min
Mar 19, 1:38 PM EDTSpecial Marine WarningTAE37 min
Mar 19, 1:52 PM EDTSevere Thunderstorm WarningTAEBay, Calhoun, Washington25 min
Mar 19, 3:40 PM EDTGale WarningTAE37 hr
Mar 19, 3:56 PM EDTHigh Surf AdvisoryTAEBay, Gulf40 hr
Mar 19, 4:50 PM EDTSpecial Weather StatementTAEGadsden40 min

Nearby

Tornado Warnings in Florida, 2018Every tornado warning in 2018Tornadoes in 2018

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.