Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 82, NWS Mobile, AL

April 24, 2021Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Apr 24, 2021, 7:44 AM CDT for Okaloosa County, Santa Rosa County, Florida. It was in force for 46 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: Apr 24, 2021, 7:44 AM CDT (12:44 UTC)
Expired: Apr 24, 2021, 8:30 AM CDT
In force: 46 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 102 km from the middle of the area, began a volume at 12:44 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

Time	Report	Where	Remark
Apr 24, 7:46 AM CDT	TSTM WND DMG	5 N Allentown, FL	THREE TREES AND POWERLINES DOWN ON HILLARY THOMPSON RD. TRAILER ROOF DAMAGE AND SHED DAMAGE AT 1996 HILLARY THOMPSON RD. TIME ESTIMATED BASED ON RADAR.

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.

Issued	Product	Office	Lasted
Apr 24, 1:23 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 0.7 hours before the alert went out and 258 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: 175 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 544 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 447 m²/s²
0-3 km storm-relative helicity: 570 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

833 
WUUS54 KMOB 241244
SVRMOB
FLC091-113-241330-
/O.NEW.KMOB.SV.W.0082.210424T1244Z-210424T1330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
744 AM CDT Sat Apr 24 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Northern Okaloosa County in northwestern Florida...
  Northern Santa Rosa County in northwestern Florida...

* Until 830 AM CDT.

* At 743 AM CDT, a severe thunderstorm was located 7 miles north of
  Point Baker, or 10 miles north of Milton, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Crestview, Baker, Jay, Laurel Hill, Point Baker and Roeville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 AM CDT for south central
Alabama...and northwestern Florida.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3067 8727 3070 8727 3100 8718 3099 8639
      3067 8639
TIME...MOT...LOC 1243Z 265DEG 37KT 3079 8703 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

Black

1 follow-up statement

419 
WWUS54 KMOB 241305
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
805 AM CDT Sat Apr 24 2021

FLC091-113-241330-
/O.CON.KMOB.SV.W.0082.000000T0000Z-210424T1330Z/
Okaloosa FL-Santa Rosa FL-
805 AM CDT Sat Apr 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CDT
FOR NORTHERN OKALOOSA AND NORTHEASTERN SANTA ROSA COUNTIES...

At 804 AM CDT, a severe thunderstorm was located 5 miles west of
Baker, or 12 miles west of Crestview, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Crestview, Baker and Laurel Hill. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 AM CDT for south central
Alabama...and northwestern Florida.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3067 8698 3077 8697 3100 8694 3099 8639
      3067 8639
TIME...MOT...LOC 1304Z 265DEG 37KT 3081 8677 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 5:09 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	51 min
Apr 24, 5:14 AM CDT	Severe Thunderstorm Warning	MOB	Escambia	46 min
Apr 24, 5:51 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Okaloosa, Santa Rosa	54 min
Apr 24, 5:57 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Okaloosa, Santa Rosa	63 min
Apr 24, 6:20 AM CDT	Flash Flood Warning	MOB	Escambia	4 hr
Apr 24, 6:42 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Okaloosa, Santa Rosa	48 min
Apr 24, 6:58 AM CDT	Severe Thunderstorm Warning	MOB	Escambia, Okaloosa, Santa Rosa	47 min
Apr 24, 8:24 AM CDT	Areal Flood Advisory	MOB	Escambia, Okaloosa, Santa Rosa	111 min
Apr 24, 8:29 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	16 min
Apr 24, 9:51 AM CDT	Special Weather Statement	MOB	Okaloosa	39 min
Apr 24, 10:01 AM CDT	Tornado Warning	MOB	Okaloosa	14 min
Apr 24, 10:14 AM CDT	Special Weather Statement	MOB	Okaloosa, Santa Rosa	46 min
Apr 24, 10:19 AM CDT	Flash Flood Warning	MOB	Okaloosa	4 hr
Apr 24, 10:39 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	36 min
Apr 24, 11:09 AM CDT	Special Weather Statement	MOB	Santa Rosa	51 min
Apr 24, 12:46 PM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	44 min
Apr 24, 6:27 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	48 min
Apr 24, 6:33 PM CDT	Areal Flood Warning	MOB	Escambia, Okaloosa, Santa Rosa	3 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.