Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 31, NWS Tallahassee, FL

November 12, 2018Jackson County, Florida

NWS Tallahassee, FL issued this tornado warning at Nov 12, 2018, 5:15 PM CST for Jackson County, Florida. It was in force for 16 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 12, 2018, 5:15 PM CST (23:15 UTC)
Expired: Nov 12, 2018, 5:31 PM CST
In force: 16 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Jackson County, FL

The radar

The Ft Rucker radar (KEOX), 57 km from the middle of the area, began a volume at 23:19 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.

Issued	Product	Office	Lasted
Nov 12, 11:46 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.3 hours before the alert went out and 125 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 665 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 395 m²/s²
0-3 km storm-relative helicity: 411 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

870 
WFUS52 KTAE 122315
TORTAE
FLC063-122345-
/O.NEW.KTAE.TO.W.0031.181112T2315Z-181112T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
515 PM CST MON NOV 12 2018

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  Northwestern Jackson County in the Panhandle of Florida...

* Until 545 PM CST.
    
* At 515 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Graceville, moving northeast at 20 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...
  Graceville around 530 PM CST.

Other locations impacted by this tornadic thunderstorm include
Jacobs, Campbellton, Jacob City, Browntown, Ellaville and Sills.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 3098 8552 3100 8550 3100 8529 3097 8524
      3082 8545 3086 8555
TIME...MOT...LOC 2315Z 212DEG 19KT 3088 8548 

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

$$

33-LF

1 follow-up statement

012 
WWUS52 KTAE 122331
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
531 PM CST MON NOV 12 2018

FLC063-122339-
/O.CAN.KTAE.TO.W.0031.000000T0000Z-181112T2345Z/
Jackson FL-
531 PM CST MON NOV 12 2018

...THE TORNADO WARNING FOR NORTHWESTERN JACKSON COUNTY 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 up to 40 mph are still possible with this 
thunderstorm.

A Tornado Watch remains in effect until 700 PM CST for southeastern
Alabama...and the Panhandle of Florida.

LAT...LON 3098 8552 3100 8550 3100 8529 3097 8524
      3082 8545 3086 8555
TIME...MOT...LOC 2328Z 212DEG 19KT 3095 8543 

$$

33-LF

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 11, 7:44 PM CST	Small Craft Advisory	TAE		19 hr
Nov 12, 8:19 AM CST	Special Marine Warning	TAE		56 min
Nov 12, 9:13 AM CST	Special Marine Warning	TAE		62 min
Nov 12, 10:11 AM CST	Special Marine Warning	TAE		2 hr
Nov 12, 10:14 AM CST	Special Marine Warning	TAE		91 min
Nov 12, 11:39 AM CST	Special Marine Warning	TAE		81 min
Nov 12, 12:15 PM CST	Special Marine Warning	TAE		72 min
Nov 12, 12:33 PM CST	Special Weather Statement	TAE	Bay	57 min
Nov 12, 12:55 PM CST	Special Marine Warning	TAE		48 min
Nov 12, 12:57 PM CST	Special Marine Warning	TAE		106 min
Nov 12, 1:16 PM CST	Severe Thunderstorm Warning	TAE	Bay, Gulf	26 min
Nov 12, 2:16 PM CST	Severe Thunderstorm Warning	TAE	Bay	27 min
Nov 12, 3:12 PM CST	Special Marine Warning	TAE		2 hr
Nov 12, 3:37 PM CST	Special Weather Statement	TAE	Walton	38 min
Nov 12, 4:19 PM CST	Special Weather Statement	TAE	Holmes, Walton	41 min
Nov 12, 4:50 PM CST	Tornado Warning	TAE	Holmes, Jackson, Walton, Washington	25 min
Nov 12, 5:15 PM CST	Special Marine Warning	TAE		90 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.