Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 28, NWS Tallahassee, FL

November 5, 2018Walton County, Florida

NWS Tallahassee, FL issued this tornado warning at Nov 5, 2018, 10:20 PM CST for Walton 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: Nov 5, 2018, 10:20 PM CST (04:20 UTC)
Expired: Nov 5, 2018, 10:45 PM CST
In force: 25 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Walton County, FL

The radar

The Eglin Afb radar (KEVX), 46 km from the middle of the area, began a volume at 04:24 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, 4.3 hours before the alert went out and 191 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 293 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 751 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

537 
WFUS52 KTAE 060420
TORTAE
FLC131-060445-
/O.NEW.KTAE.TO.W.0028.181106T0420Z-181106T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
1020 PM CST MON NOV 5 2018

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  North central Walton County in the Panhandle of Florida...

* Until 1045 PM CST.
    
* At 1020 PM CST, a severe thunderstorm capable of producing a
  tornado was located 11 miles southeast of Florala, moving northeast
  at 25 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 tornadic thunderstorm will remain over mainly rural areas of
  north central Walton County, including the following locations...
  Gordon and Caney Creek.

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 3084 8625 3090 8629 3099 8617 3089 8609
TIME...MOT...LOC 0420Z 240DEG 49KT 3093 8616 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

04-MCD

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 5, 10:26 PM CST	Tornado Warning	TAE	Holmes, Walton	23 min
Nov 6, 4:18 PM CST	Special Weather Statement	TAE	Leon	27 min

Nearby

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