Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 12, NWS Mobile, AL

April 22, 2018Okaloosa County, Florida

NWS Mobile, AL issued this tornado warning at Apr 22, 2018, 4:08 PM CDT for Okaloosa County, Florida. It was in force for 37 min. 8 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 22, 2018, 4:08 PM CDT (21:08 UTC)
Expired
Apr 22, 2018, 4:45 PM CDT
In force
37 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 68 km from the middle of the area, began a volume at 21:08 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.

What was reported inside it

TimeReportWhereRemark
Apr 22, 4:11 PM CDTTORNADOFort Walton Beach, FLVIDEO OF A WATERSPOUT MOVING ONSHORE ALONG FORT WALTON BEACH.
Apr 22, 4:11 PM CDTTORNADOFort Walton Beach, FLVIDEO OF A WATERSPOUT MOVING ONSHORE ALONG FORT WALTON BEACH.
Apr 22, 4:17 PM CDTTSTM WND DMGFort Walton Beach, FLROOFING DAMAGE TO THE CHARLIE HILL TERRACE. OKALOOSA SHERIFF OFFICE REPORTS NUMEROUS DOWNED TREES AND POWERLINES WITH MINOR DAMAGE TO BUILDINGS ACROSS SOUTHERN OKALOOSA COUNTY.
Apr 22, 4:17 PM CDTTSTM WND DMGFort Walton Beach, FLROOFING DAMAGE TO THE CHARLIE HILL TERRACE. OKALOOSA SHERIFF OFFICE REPORTS NUMEROUS DOWNED TREES AND POWERLINES WITH MINOR DAMAGE TO BUILDINGS ACROSS SOUTHERN OKALOOSA COUNTY.
Apr 22, 4:21 PM CDTTSTM WND DMGOcean City, FLIMAGE OF A LARGE TREE SNAPPED AND NUMEROUS BRANCHES DOWN NEAR A HOME OCEAN CITY.
Apr 22, 4:21 PM CDTTSTM WND DMGOcean City, FLIMAGE OF A LARGE TREE SNAPPED AND NUMEROUS BRANCHES DOWN NEAR A HOME OCEAN CITY.
Apr 22, 4:28 PM CDTFUNNEL CLOUD2 Ne Eglin Afb, FLKVPS ASOS REPORTS A FUNNEL CLOUD NORTH OF EGLIN AFB.
Apr 22, 4:28 PM CDTFUNNEL CLOUD2 Ne Eglin Afb, FLKVPS ASOS REPORTS A FUNNEL CLOUD NORTH OF EGLIN AFB.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 22, 2:55 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 9.1 hours before the alert went out and 221 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 12:00Z on 2018-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2018-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 265 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
640 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
265 m²/s²
0-3 km storm-relative helicity
347 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

607 
WFUS54 KMOB 222108
TORMOB
FLC091-222145-
/O.NEW.KMOB.TO.W.0012.180422T2108Z-180422T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
408 PM CDT SUN APR 22 2018

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Southeastern Okaloosa County in northwestern Florida...

* Until 445 PM CDT.
    
* At 408 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Mary Esther, 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 dangerous storm will be near...
  Fort Walton Beach, Ocean City and Cinco Bayou around 420 PM CDT.
  Wright, Lake Lorraine and Shalimar around 425 PM CDT.
  Eglin AFB around 430 PM CDT.

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 3031 8658 3033 8669 3054 8669 3050 8646
TIME...MOT...LOC 2108Z 201DEG 20KT 3037 8663 

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

$$
2 follow-up statements
890 
WWUS54 KMOB 222125
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
425 PM CDT SUN APR 22 2018

FLC091-222145-
/O.CON.KMOB.TO.W.0012.000000T0000Z-180422T2145Z/
Okaloosa FL-
425 PM CDT SUN APR 22 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
SOUTHEASTERN OKALOOSA COUNTY...
        
At 425 PM CDT, a confirmed tornado was located over Shalimar, or over
Lake Lorraine, moving north at 25 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

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...

To repeat, a tornado is on the ground. 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 8656 3042 8665 3054 8669 3050 8646
TIME...MOT...LOC 2125Z 201DEG 20KT 3046 8659 

TORNADO...OBSERVED
HAIL...<.75IN

$$
668 
WWUS54 KMOB 222139
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
439 PM CDT SUN APR 22 2018

FLC091-222149-
/O.EXP.KMOB.TO.W.0012.000000T0000Z-180422T2145Z/
Okaloosa FL-
439 PM CDT SUN APR 22 2018

...THE TORNADO WARNING FOR SOUTHEASTERN OKALOOSA COUNTY WILL EXPIRE
AT 445 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 900 PM CDT for northwestern
Florida.

LAT...LON 3041 8656 3042 8665 3054 8669 3050 8646
TIME...MOT...LOC 2139Z 201DEG 20KT 3053 8656 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 22, 12:46 PM CDTSpecial Weather StatementMOBSanta Rosa29 min
Apr 22, 1:10 PM CDTSpecial Weather StatementMOBSanta Rosa35 min
Apr 22, 1:26 PM CDTTornado WarningMOBSanta Rosa34 min
Apr 22, 3:23 PM CDTTornado WarningMOBOkaloosa16 min
Apr 22, 3:25 PM CDTTornado WarningMOBEscambia35 min
Apr 22, 3:49 PM CDTSevere Thunderstorm WarningMOBEscambia, Santa Rosa41 min
Apr 22, 4:01 PM CDTTornado WarningMOBEscambia, Santa Rosa29 min
Apr 22, 4:24 PM CDTSevere Thunderstorm WarningMOBSanta Rosa39 min
Apr 22, 4:31 PM CDTTornado Warning Tornado observedMOBOkaloosa15 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.