Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 84, NWS Mobile, AL

April 24, 2021Okaloosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Apr 24, 2021, 10:39 AM CDT for Okaloosa County, Florida. It was in force for 36 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 24, 2021, 10:39 AM CDT (15:39 UTC)
Expired: Apr 24, 2021, 11:15 AM CDT
In force: 36 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 72 km from the middle of the area, began a volume at 15:43 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 nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 3.7 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-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.

041 
WUUS54 KMOB 241539
SVRMOB
FLC091-241615-
/O.NEW.KMOB.SV.W.0084.210424T1539Z-210424T1615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
1039 AM CDT Sat Apr 24 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Central Okaloosa County in northwestern Florida...

* Until 1115 AM CDT.

* At 1038 AM CDT, a severe thunderstorm was located 7 miles southwest
  of Baker, or 10 miles west of Crestview, moving east at 45 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Crestview and Baker. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3060 8679 3063 8680 3078 8679 3089 8639
      3065 8639
TIME...MOT...LOC 1538Z 257DEG 41KT 3070 8674 

HAIL...0.75IN
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, 7:44 AM CDT	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	46 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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.