Alert archive / Florida / Tornado Warnings in 2019

Tornado Warning 56, NWS Mobile, AL

December 17, 2019Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this tornado warning at Dec 17, 2019, 3:14 AM CST for Okaloosa County, Santa Rosa County, Florida. It was in force for 61 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 17, 2019, 3:14 AM CST (09:14 UTC)
Expired: Dec 17, 2019, 4:15 AM CST
In force: 61 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 72 km from the middle of the area, began a volume at 09:15 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 nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 9.2 hours before the alert went out and 227 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: 786 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 205 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

961 
WFUS54 KMOB 170914
TORMOB
FLC091-113-171015-
/O.NEW.KMOB.TO.W.0056.191217T0914Z-191217T1015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
314 AM CST Tue Dec 17 2019

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Southern Okaloosa County in northwestern Florida...
  Eastern Santa Rosa County in northwestern Florida...

* Until 415 AM CST.
    
* At 313 AM CST, a severe thunderstorm capable of producing a tornado
  was located 5 miles northeast of Navarre Beach, or 9 miles west of
  Mary Esther, moving east 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 dangerous storm will be near...
  Wright and Ocean City around 340 AM CST.
  Shalimar around 345 AM CST.
  Lake Lorraine around 350 AM CST.
  Eglin AFB around 355 AM CST.
  Niceville and Valparaiso around 405 AM CST.

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 3041 8684 3051 8687 3070 8639 3044 8639
TIME...MOT...LOC 0913Z 248DEG 20KT 3045 8681 

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

$$

JLH

4 follow-up statements

540 
WWUS54 KMOB 170927
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
327 AM CST Tue Dec 17 2019

FLC113-170936-
/O.CAN.KMOB.TO.W.0056.000000T0000Z-191217T1015Z/
Santa Rosa FL-
327 AM CST Tue Dec 17 2019

...THE TORNADO WARNING FOR EASTERN SANTA ROSA COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3045 8676 3053 8676 3070 8639 3051 8639
TIME...MOT...LOC 0926Z 243DEG 21KT 3049 8674 

$$

FLC091-171015-
/O.CON.KMOB.TO.W.0056.000000T0000Z-191217T1015Z/
Okaloosa FL-
327 AM CST Tue Dec 17 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 AM CST FOR SOUTHERN
OKALOOSA COUNTY...
    
At 326 AM CST, a severe thunderstorm capable of producing a tornado
was located 6 miles west of Wright, 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 dangerous storm will be near...
  Niceville and Valparaiso around 400 AM CST.

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 3045 8676 3053 8676 3070 8639 3051 8639
TIME...MOT...LOC 0926Z 243DEG 21KT 3049 8674 

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

$$

JLH

988 
WWUS54 KMOB 170942
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
342 AM CST Tue Dec 17 2019

FLC091-171015-
/O.CON.KMOB.TO.W.0056.000000T0000Z-191217T1015Z/
Okaloosa FL-
342 AM CST Tue Dec 17 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 AM CST FOR
SOUTHEASTERN OKALOOSA COUNTY...
    
At 342 AM CST, a severe thunderstorm capable of producing a tornado
was located 7 miles northwest of Valparaiso, moving northeast at 30
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
southeastern Okaloosa County.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3052 8664 3057 8667 3070 8639 3058 8639
TIME...MOT...LOC 0942Z 240DEG 26KT 3056 8661 

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

$$

JLH

251 
WWUS54 KMOB 170956
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
356 AM CST Tue Dec 17 2019

FLC091-171015-
/O.CON.KMOB.TO.W.0056.000000T0000Z-191217T1015Z/
Okaloosa FL-
356 AM CST Tue Dec 17 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 AM CST FOR EAST
CENTRAL OKALOOSA COUNTY...
    
At 355 AM CST, a severe thunderstorm capable of producing a tornado
was located 7 miles north of Niceville, moving northeast at 25 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
east central Okaloosa County.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3059 8656 3062 8655 3070 8639 3064 8639
TIME...MOT...LOC 0955Z 237DEG 24KT 3062 8653 

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

$$

JLH

451 
WWUS54 KMOB 171015
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
415 AM CST Tue Dec 17 2019

FLC091-171025-
/O.EXP.KMOB.TO.W.0056.000000T0000Z-191217T1015Z/
Okaloosa FL-
415 AM CST Tue Dec 17 2019

...THE TORNADO WARNING FOR EAST CENTRAL OKALOOSA COUNTY HAS
EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.

LAT...LON 3059 8656 3062 8655 3070 8639 3064 8639
TIME...MOT...LOC 1015Z 248DEG 20KT 3066 8642 

$$

JLH

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 17, 1:05 AM CST	Special Weather Statement	MOB	Escambia	25 min
Dec 17, 1:15 AM CST	Tornado Warning	MOB	Escambia, Santa Rosa	30 min
Dec 17, 1:27 AM CST	Severe Thunderstorm Warning	MOB	Okaloosa	48 min
Dec 17, 2:43 AM CST	Special Weather Statement	MOB	Santa Rosa	32 min
Dec 17, 3:09 AM CST	Tornado Warning	MOB	Okaloosa	21 min
Dec 17, 4:58 AM CST	Tornado Warning	MOB	Okaloosa	14 min

Nearby

Tornado Warnings in Florida, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.