Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 25, NWS Mobile, AL

November 12, 2018Escambia County, Santa Rosa County, Florida

NWS Mobile, AL issued this tornado warning at Nov 12, 2018, 8:59 AM CST for Escambia County, Santa Rosa County, Florida. It was in force for 19 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, 8:59 AM CST (14:59 UTC)
Expired: Nov 12, 2018, 9:18 AM CST
In force: 19 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 113 km from the middle of the area, began a volume at 15:00 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, 4:34 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.0 hours before the alert went out and 248 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: 425 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 472 m²/s²
0-3 km storm-relative helicity: 487 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

As transmitted.

091 
WFUS54 KMOB 121459
TORMOB
FLC033-113-121545-
/O.NEW.KMOB.TO.W.0025.181112T1459Z-181112T1545Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
859 AM CST MON NOV 12 2018

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  South central Santa Rosa County in northwestern Florida...
  South central Escambia County in northwestern Florida...

* Until 945 AM CST.
    
* At 859 AM CST, a severe thunderstorm capable of producing a tornado
  was located 4 miles southwest of Pensacola Beach, or 5 miles south
  of Gulf Breeze, 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 dangerous storm will be near...
  Gulf Breeze and Pensacola Beach around 910 AM CST.
  Oriole Beach around 920 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 3023 8715 3026 8723 3055 8714 3055 8692
TIME...MOT...LOC 1459Z 209DEG 21KT 3029 8719 

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

$$

JLH

2 follow-up statements

016 
WWUS54 KMOB 121507
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
907 AM CST MON NOV 12 2018

FLC033-113-121545-
/O.CON.KMOB.TO.W.0025.000000T0000Z-181112T1545Z/
Santa Rosa FL-Escambia FL-
907 AM CST MON NOV 12 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM CST FOR SOUTH
CENTRAL SANTA ROSA AND SOUTH CENTRAL ESCAMBIA COUNTIES...
    
At 907 AM CST, a severe thunderstorm capable of producing a tornado
was located over Gulf Breeze, moving northeast at 20 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 dangerous storm will be near...
  Pensacola Beach around 910 AM CST.
  Gulf Breeze around 915 AM CST.
  Oriole Beach around 920 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 3030 8722 3055 8714 3055 8692 3027 8712
TIME...MOT...LOC 1507Z 204DEG 19KT 3033 8718 

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

$$

JLH

568 
WWUS54 KMOB 121518
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
918 AM CST MON NOV 12 2018

FLC033-113-121527-
/O.CAN.KMOB.TO.W.0025.000000T0000Z-181112T1545Z/
Santa Rosa FL-Escambia FL-
918 AM CST MON NOV 12 2018

...THE TORNADO WARNING FOR SOUTH CENTRAL SANTA ROSA AND SOUTH CENTRAL
ESCAMBIA COUNTIES IS CANCELLED...
                
The storm which prompted the warning no longer appears capable of 
producing a tornado. Therefore, the warning has been cancelled. 
Damaging winds are still possible with this severe thunderstorm.

A Tornado Watch remains in effect until noon CST for northwestern
Florida.

LAT...LON 3030 8722 3055 8714 3055 8692 3027 8712
TIME...MOT...LOC 1516Z 209DEG 21KT 3039 8714 

$$

JLH

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 12, 3:09 AM CST	Rip Current Statement	MOB	Escambia, Okaloosa, Santa Rosa	27 hr
Nov 12, 6:48 AM CST	Special Weather Statement	MOB	Escambia	42 min
Nov 12, 8:56 AM CST	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	29 min
Nov 12, 11:15 AM CST	Tornado Warning	MOB	Escambia, Santa Rosa	45 min
Nov 12, 11:32 AM CST	Areal Flood Advisory	MOB	Escambia, Santa Rosa	118 min
Nov 12, 11:59 AM CST	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	13 min
Nov 12, 3:17 PM CST	Special Weather Statement	MOB	Okaloosa	43 min
Nov 12, 3:26 PM CST	Severe Thunderstorm Warning	MOB	Okaloosa	37 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.