Alert archive / Florida / Tornado Warnings in 2021

Tornado Warning 22, NWS Mobile, AL

April 10, 2021Okaloosa County, Florida

NWS Mobile, AL issued this tornado warning at Apr 10, 2021, 6:18 AM CDT for Okaloosa County, Florida. It was in force for 12 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: Apr 10, 2021, 6:18 AM CDT (11:18 UTC)
Expired: Apr 10, 2021, 6:30 AM CDT
In force: 12 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), 53 km from the middle of the area, began a volume at 11:21 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
Apr 10, 2:30 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.3 hours before the alert went out and 207 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: 160 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 849 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

558 
WFUS54 KMOB 101118
TORMOB
FLC091-101130-
/O.NEW.KMOB.TO.W.0022.210410T1118Z-210410T1130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
618 AM CDT Sat Apr 10 2021

The National Weather Service in Mobile has issued a

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

* Until 630 AM CDT.
    
* At 618 AM CDT, a severe thunderstorm capable of producing a tornado
  was located 9 miles east of Crestview, moving east at 40 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 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.

&&

LAT...LON 3074 8639 3075 8645 3082 8646 3083 8639
TIME...MOT...LOC 1118Z 268DEG 33KT 3079 8641 

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

$$

Black

1 follow-up statement

482 
WWUS54 KMOB 101122
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
622 AM CDT Sat Apr 10 2021

FLC091-101132-
/O.EXP.KMOB.TO.W.0022.000000T0000Z-210410T1130Z/
Okaloosa FL-
622 AM CDT Sat Apr 10 2021

...THE TORNADO WARNING FOR EAST CENTRAL OKALOOSA COUNTY WILL EXPIRE
AT 630 AM 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 800 AM CDT for northwestern
Florida.

LAT...LON 3074 8639 3075 8645 3082 8646 3083 8639
TIME...MOT...LOC 1122Z 268DEG 33KT 3079 8637 

$$
Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 2:50 AM CDT	Severe Thunderstorm Warning	MOB	Escambia	55 min
Apr 10, 2:59 AM CDT	Severe Thunderstorm Warning	MOB	Escambia	61 min
Apr 10, 3:46 AM CDT	Special Weather Statement	MOB	Escambia, Santa Rosa	44 min
Apr 10, 3:53 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	67 min
Apr 10, 4:07 AM CDT	Areal Flood Advisory	MOB	Escambia	3 hr
Apr 10, 4:30 AM CDT	Special Weather Statement	MOB	Okaloosa	45 min
Apr 10, 4:53 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Okaloosa, Santa Rosa	52 min
Apr 10, 5:10 AM CDT	Areal Flood Advisory	MOB	Escambia, Santa Rosa	3 hr
Apr 10, 5:40 AM CDT	Flash Flood Warning	MOB	Escambia, Santa Rosa	6 hr
Apr 10, 5:44 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Okaloosa, Santa Rosa	61 min
Apr 10, 5:57 AM CDT	Tornado Warning	MOB	Okaloosa	33 min
Apr 10, 6:20 AM CDT	Severe Thunderstorm Warning	MOB	Escambia	40 min
Apr 10, 6:52 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Okaloosa, Santa Rosa	53 min
Apr 10, 7:35 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	41 min
Apr 10, 7:39 AM CDT	Flash Flood Warning	MOB	Okaloosa	5 hr
Apr 10, 9:38 AM CDT	River Flood Warning	MOB	Okaloosa	11 hr

Nearby

Tornado Warnings in Florida, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.