Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 34, NWS Tallahassee, FL

December 1, 2018Walton County, Washington County, Florida

NWS Tallahassee, FL issued this tornado warning at Dec 1, 2018, 5:16 PM CST for Walton County, Washington County, Florida. It was in force for 10 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
Dec 1, 2018, 5:16 PM CST (23:16 UTC)
Expired
Dec 1, 2018, 5:26 PM CST
In force
10 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Walton County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 14 km from the middle of the area, began a volume at 23:15 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Dec 1, 11:16 AM CSTTornado WatchSPC7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.3 hours before the alert went out and 149 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 2018-12-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2018-12-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 259 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
976 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
259 m²/s²
0-3 km storm-relative helicity
531 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

783 
WFUS52 KTAE 012316
TORTAE
FLC131-133-012345-
/O.NEW.KTAE.TO.W.0034.181201T2316Z-181201T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
516 PM CST SAT DEC 1 2018

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  East central Walton County in the Panhandle of Florida...
  Central Washington County in the Panhandle of Florida...

* Until 545 PM CST.
    
* At 516 PM CST, a severe thunderstorm capable of producing a tornado
  was located 11 miles west of Vernon, moving northeast at 35 mph.

  HAZARD...Tornado.

  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 dangerous storm will be near...
  Vernon around 535 PM CST.

Other locations impacted by this tornadic thunderstorm include Holmes
Valley, Millers Ferry, Hinsons Crossroads, Red Bay, Five Points,
Whitehead Crossroads, Live Oak and Knox Hill.

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 3063 8601 3075 8573 3074 8572 3074 8570
      3058 8568 3055 8597
TIME...MOT...LOC 2316Z 247DEG 32KT 3061 8591 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

42-DVD
1 follow-up statement
877 
WWUS52 KTAE 012326
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
526 PM CST SAT DEC 1 2018

FLC131-133-012336-
/O.CAN.KTAE.TO.W.0034.000000T0000Z-181201T2345Z/
Walton FL-Washington FL-
526 PM CST SAT DEC 1 2018

...THE TORNADO WARNING FOR EAST CENTRAL WALTON AND CENTRAL WASHINGTON
COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

A Tornado Watch remains in effect until 600 PM CST for the Panhandle
of Florida.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Tallahassee.

LAT...LON 3063 8601 3075 8573 3074 8572 3074 8570
      3058 8568 3055 8597
TIME...MOT...LOC 2323Z 247DEG 32KT 3065 8581 

$$

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 1, 4:06 AM CSTSpecial Marine WarningTAE54 min
Dec 1, 4:58 AM CSTSpecial Marine WarningTAE62 min
Dec 1, 5:58 AM CSTSpecial Marine WarningTAE32 min
Dec 1, 6:52 AM CSTSpecial Marine WarningTAE68 min
Dec 1, 7:27 AM CSTSpecial Marine WarningTAE63 min
Dec 1, 7:54 AM CSTSpecial Weather StatementTAEWalton36 min
Dec 1, 8:03 AM CSTSpecial Marine WarningTAE57 min
Dec 1, 8:41 AM CSTSpecial Marine WarningTAE30 min
Dec 1, 8:50 AM CSTSpecial Marine WarningTAE55 min
Dec 1, 9:10 AM CSTSpecial Marine WarningTAE28 min
Dec 1, 9:36 AM CSTSpecial Marine WarningTAE32 min
Dec 1, 9:38 AM CSTSpecial Marine WarningTAE37 min
Dec 1, 10:07 AM CSTSpecial Marine WarningTAE23 min
Dec 1, 10:22 AM CSTSpecial Marine WarningTAE83 min
Dec 1, 11:11 AM CSTSpecial Weather StatementTAEJefferson34 min
Dec 1, 11:38 AM CSTSpecial Marine WarningTAE2 hr
Dec 1, 11:38 AM CSTSpecial Marine WarningTAE2 hr
Dec 1, 12:39 PM CSTSpecial Weather StatementTAEBay66 min
Dec 1, 1:01 PM CSTSpecial Marine WarningTAE59 min
Dec 1, 1:24 PM CSTSevere Thunderstorm WarningTAEBay, Walton, Washington66 min
Dec 1, 1:41 PM CSTSpecial Marine WarningTAE2 hr
Dec 1, 1:43 PM CSTTornado WarningTAEBay, Washington47 min
Dec 1, 2:03 PM CSTSpecial Marine WarningTAE61 min
Dec 1, 2:19 PM CSTSpecial Weather StatementTAELiberty41 min
Dec 1, 2:36 PM CSTSpecial Weather StatementTAECalhoun39 min
Dec 1, 2:40 PM CSTSpecial Marine WarningTAE65 min
Dec 1, 2:46 PM CSTSpecial Weather StatementTAEWalton44 min
Dec 1, 3:09 PM CSTAreal Flood AdvisoryTAEBay, Calhoun, Jackson, Washington2 hr
Dec 1, 3:36 PM CSTSpecial Marine WarningTAE84 min
Dec 1, 4:01 PM CSTTornado WarningTAEGadsden12 min
Dec 1, 4:43 PM CSTSpecial Weather StatementTAEHolmes, Walton47 min
Dec 1, 4:46 PM CSTAreal Flood AdvisoryTAEGadsden, Liberty119 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.