Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 18, NWS Mobile, AL

September 5, 2018Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this tornado warning at Sep 5, 2018, 3:10 AM CDT for Okaloosa County, Santa Rosa County, Florida. It was in force for 29 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
Sep 5, 2018, 3:10 AM CDT (08:10 UTC)
Expired
Sep 5, 2018, 3:39 AM CDT
In force
29 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 80 km from the middle of the area, began a volume at 08:14 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
Sep 4, 6:51 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.2 hours before the alert went out and 237 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 00:00Z on 2018-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 912 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2018-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.1939Sfc1 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
912 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
781 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

As transmitted.

801 
WFUS54 KMOB 050810
TORMOB
FLC091-113-050900-
/O.NEW.KMOB.TO.W.0018.180905T0810Z-180905T0900Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
310 AM CDT WED SEP 5 2018

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Southwestern Okaloosa County in northwestern Florida...
  East central Santa Rosa County in northwestern Florida...

* Until 400 AM CDT.
    
* At 310 AM CDT, a severe thunderstorm capable of producing a tornado
  was located 6 miles west of Wright, moving north 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
  southwestern Okaloosa and east central Santa Rosa Counties.

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 8667 3043 8677 3069 8694 3073 8676
TIME...MOT...LOC 0810Z 158DEG 20KT 3048 8675 

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

$$
3 follow-up statements
979 
WWUS54 KMOB 050821
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
321 AM CDT WED SEP 5 2018

FLC091-113-050900-
/O.CON.KMOB.TO.W.0018.000000T0000Z-180905T0900Z/
Okaloosa FL-Santa Rosa FL-
321 AM CDT WED SEP 5 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 AM CDT FOR WEST
CENTRAL OKALOOSA AND EAST CENTRAL SANTA ROSA COUNTIES...
    
At 321 AM CDT, a severe thunderstorm capable of producing a tornado
was located 10 miles northwest of Wright, moving north 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
west central Okaloosa and east central Santa Rosa Counties.

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 3052 8673 3051 8679 3069 8694 3073 8678
TIME...MOT...LOC 0821Z 158DEG 22KT 3055 8678 

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

$$
886 
WWUS54 KMOB 050833
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
333 AM CDT WED SEP 5 2018

FLC091-050842-
/O.CAN.KMOB.TO.W.0018.000000T0000Z-180905T0900Z/
Okaloosa FL-
333 AM CDT WED SEP 5 2018

...THE TORNADO WARNING FOR WEST CENTRAL OKALOOSA 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 3070 8691 3070 8689 3073 8679 3063 8679
      3059 8680 3058 8681
TIME...MOT...LOC 0832Z 158DEG 21KT 3060 8680 

$$

FLC113-050900-
/O.CON.KMOB.TO.W.0018.000000T0000Z-180905T0900Z/
Santa Rosa FL-
333 AM CDT WED SEP 5 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 AM CDT FOR EAST
CENTRAL SANTA ROSA COUNTY...
    
At 332 AM CDT, a severe thunderstorm capable of producing a tornado
was located 12 miles southeast of Roeville, or 13 miles east of
Bagdad, moving north 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
east central Santa Rosa 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.

&&

LAT...LON 3070 8691 3070 8689 3073 8679 3063 8679
      3059 8680 3058 8681
TIME...MOT...LOC 0832Z 158DEG 21KT 3060 8680 

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

$$
615 
WWUS54 KMOB 050839
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
339 AM CDT WED SEP 5 2018

FLC113-050848-
/O.CAN.KMOB.TO.W.0018.000000T0000Z-180905T0900Z/
Santa Rosa FL-
339 AM CDT WED SEP 5 2018

...THE TORNADO WARNING FOR EAST CENTRAL SANTA ROSA 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.

LAT...LON 3070 8691 3070 8689 3073 8679 3063 8679
      3059 8680 3058 8681
TIME...MOT...LOC 0837Z 158DEG 20KT 3063 8682 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 8:24 PM CDTFlash Flood WarningMOBEscambia, Santa Rosa12 hr
Sep 4, 8:31 PM CDTRiver Flood WarningMOBEscambia4 days
Sep 4, 9:29 PM CDTTornado WarningMOBEscambia, Santa Rosa31 min
Sep 4, 9:55 PM CDTTornado Warning Tornado observedMOBSanta Rosa27 min
Sep 4, 10:45 PM CDTFlash Flood WarningMOBEscambia, Santa Rosa12 hr
Sep 5, 3:31 AM CDTTornado WarningMOBOkaloosa19 min
Sep 5, 5:15 AM CDTCoastal Flood AdvisoryMOBEscambia, Santa Rosa9 hr
Sep 5, 5:15 AM CDTHigh Surf AdvisoryMOBEscambia, Santa Rosa9 hr
Sep 5, 7:54 AM CDTFlash Flood WarningMOBEscambia, Santa Rosa6 hr
Sep 5, 9:57 AM CDTFlash Flood WarningMOBOkaloosa, Santa Rosa6 hr
Sep 5, 1:50 PM CDTAreal Flood WarningMOBEscambia, Santa Rosa6 hr

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.