Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 29, NWS Mobile, AL

June 21, 2017Okaloosa County, Florida

NWS Mobile, AL issued this tornado warning at Jun 21, 2017, 6:11 AM CDT for Okaloosa County, Florida. It was in force for 22 min. 1 report 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
Jun 21, 2017, 6:11 AM CDT (11:11 UTC)
Expired
Jun 21, 2017, 6:33 AM CDT
In force
22 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 74 km from the middle of the area, began a volume at 11:14 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.

What was reported inside it

TimeReportWhereRemark
Jun 21, 6:22 AM CDTTSTM WND DMG1 Nw Fort Walton Beach, FLALL LANES OF TRAFFIC ARE CLOSED DUE TO DOWNED POWERLINES ON EGLIN PKWY INFRONT OF THE GOOFY GOLF.

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
Jun 20, 10:24 PM CDTTornado WatchSPC12 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.2 hours before the alert went out and 228 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 2017-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 439 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 2017-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 173 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
439 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
713 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
249 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.8

Open this sounding in Storm Lab

The text

As transmitted.

391 
WFUS54 KMOB 211111
TORMOB
FLC091-211145-
/O.NEW.KMOB.TO.W.0029.170621T1111Z-170621T1145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
611 AM CDT WED JUN 21 2017

The National Weather Service in Mobile has issued a

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

* Until 645 AM CDT
    
* At 610 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Cinco Bayou, or near Fort Walton Beach, moving
  northwest 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, Eglin AFB, Mary Esther, Ocean City, Lake 
  Lorraine, Shalimar and Cinco Bayou around 620 AM CDT. 
  Wright around 625 AM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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 3038 8664 3038 8682 3039 8682 3039 8680
      3040 8682 3041 8683 3041 8680 3060 8679
      3069 8644 3038 8645 3038 8650 3037 8650
TIME...MOT...LOC 1110Z 155DEG 24KT 3037 8658 

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

$$

Butts
3 follow-up statements
593 
WWUS54 KMOB 211121
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
621 AM CDT WED JUN 21 2017

FLC091-211145-
/O.CON.KMOB.TO.W.0029.000000T0000Z-170621T1145Z/
Okaloosa FL-
621 AM CDT WED JUN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 AM CDT FOR
SOUTHWESTERN OKALOOSA COUNTY...
    
At 621 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Ocean City, moving northwest at 30 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 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.

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3038 8682 3039 8682 3039 8680 3040 8682
      3041 8682 3041 8680 3060 8679 3066 8654
      3040 8657 3038 8660
TIME...MOT...LOC 1121Z 155DEG 24KT 3044 8662 

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

$$

Butts
185 
WWUS54 KMOB 211126
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
626 AM CDT WED JUN 21 2017

FLC091-211145-
/O.CON.KMOB.TO.W.0029.000000T0000Z-170621T1145Z/
Okaloosa FL-
626 AM CDT WED JUN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 AM CDT FOR
SOUTHWESTERN OKALOOSA COUNTY...
        
At 625 AM CDT, a confirmed tornado was located over Ocean City,
moving northwest at 15 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. 

Locations impacted include...
Wright, Fort Walton Beach, Mary Esther, Ocean City, Lake Lorraine,
Shalimar and Cinco Bayou.

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.

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3038 8682 3039 8682 3039 8680 3040 8682
      3041 8682 3041 8680 3060 8679 3066 8654
      3040 8657 3038 8660
TIME...MOT...LOC 1125Z 154DEG 15KT 3044 8662 

TORNADO...OBSERVED
HAIL...0.00IN

$$

Butts
497 
WWUS54 KMOB 211133
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
633 AM CDT WED JUN 21 2017

FLC091-211142-
/O.CAN.KMOB.TO.W.0029.000000T0000Z-170621T1145Z/
Okaloosa FL-
633 AM CDT WED JUN 21 2017

...THE TORNADO WARNING FOR SOUTHWESTERN OKALOOSA COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened, and no longer 
appears capable of producing a tornado. Therefore, the warning has 
been cancelled.

A tornado watch remains in effect until 1000 AM CDT for northwestern
Florida.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mobile.

Additional statements will be issued as conditions warrant.

LAT...LON 3038 8682 3039 8682 3039 8680 3040 8682
      3041 8682 3041 8680 3060 8679 3066 8654
      3040 8657 3038 8660
TIME...MOT...LOC 1130Z 155DEG 24KT 3049 8665 

$$

Butts

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 1:56 AM CDTFlash Flood WarningMOBEscambia, Santa Rosa12 hr
Jun 21, 4:33 AM CDTTornado WarningMOBOkaloosa31 min
Jun 21, 6:56 AM CDTFlash Flood WarningMOBOkaloosa, Santa Rosa6 hr
Jun 21, 8:38 AM CDTRiver Flood WarningMOBEscambia48 hr
Jun 21, 8:38 AM CDTRiver Flood WarningMOBEscambia12 days
Jun 21, 8:38 AM CDTRiver Flood WarningMOBOkaloosa, Santa Rosa3 days
Jun 21, 8:38 AM CDTRiver Flood WarningMOBOkaloosa3 days
Jun 21, 12:05 PM CDTFlash Flood WarningMOBEscambia, Santa Rosa6 hr
Jun 21, 12:35 PM CDTAreal Flood WarningMOBEscambia, Okaloosa, Santa Rosa24 hr
Jun 21, 2:15 PM CDTTornado WarningMOBOkaloosa, Santa Rosa45 min
Jun 21, 2:44 PM CDTTornado WarningMOBOkaloosa, Santa Rosa30 min
Jun 21, 2:46 PM CDTTornado WarningMOBEscambia59 min
Jun 21, 3:53 PM CDTTornado WarningMOBEscambia52 min
Jun 21, 4:17 PM CDTTornado WarningMOBEscambia43 min
Jun 21, 5:51 PM CDTFlash Flood WarningMOBEscambia, Santa Rosa6 hr
Jun 21, 6:33 PM CDTSpecial Weather StatementMOBEscambia42 min

Nearby

Tornado Warnings in Florida, 2017Every tornado warning in 2017Tornadoes in 2017

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.