Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

March 18, 2021Escambia County, Florida

NWS Mobile, AL issued this special weather statement at Mar 18, 2021, 12:59 AM CDT for Escambia County, Florida. It was in force for 46 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: Mar 18, 2021, 12:59 AM CDT (05:59 UTC)
Expired: Mar 18, 2021, 1:45 AM CDT
In force: 46 min
Issued by: NWS Mobile, AL

County Escambia County, FL

The radar

The Mobile radar (KMOB), 66 km from the middle of the area, began a volume at 06:02 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.0 hours before the alert went out and 193 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: 1681 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 710 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 2.4
Supercell composite: 9.7

Open this sounding in Storm Lab

The text

As transmitted.

319 
WWUS84 KMOB 180559
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
1259 AM CDT Thu Mar 18 2021
 
ALZ264-266-FLZ201-202-180645-
Baldwin Coastal AL-Baldwin Central AL-Escambia Inland FL-
Escambia Coastal FL-
1259 AM CDT Thu Mar 18 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...SOUTHEASTERN BALDWIN AND SOUTH CENTRAL ESCAMBIA COUNTIES
UNTIL 145 AM CDT...

At 1259 AM CDT, the strong thunderstorms were located along a line
extending from 9 miles south of Point Clear to 4 miles east of Fort
Morgan to 14 miles southeast of Dauphin Island, and moving northeast
at 55 mph.

Wind gusts of 40 to 50 mph will be possible with these storms.

Locations impacted include...
Foley, Orange Beach, Lillian, Magnolia Springs, Bon Secour,
Summerdale, Perdido Beach and Elberta.

A Tornado Watch remains in effect until 300 AM CDT for southwestern
Alabama. A Tornado Watch also remains in effect until 600 AM CDT for
northwestern Florida.

LAT...LON 3026 8794 3024 8785 3026 8777 3030 8773
      3029 8775 3036 8783 3041 8782 3038 8784
      3041 8791 3071 8732 3032 8732 3033 8734
      3032 8733 3032 8739 3031 8738 3024 8782
      3024 8776 3023 8780 3023 8801
TIME...MOT...LOC 0559Z 239DEG 47KT 3034 8793 3023 8795 3007 8801 

$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 7:10 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Washington	65 min
Mar 17, 8:07 PM CDT	Special Weather Statement	MOB	Choctaw, Washington	53 min
Mar 17, 8:31 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe, Washington, Wilcox	44 min
Mar 17, 9:15 PM CDT	Special Weather Statement	MOB	Butler, Monroe, Wilcox	45 min
Mar 17, 9:27 PM CDT	Special Weather Statement	MOB	Clarke, Monroe, Washington	48 min
Mar 17, 9:55 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	50 min
Mar 17, 10:17 PM CDT	Special Weather Statement	MOB	Monroe, Washington	58 min
Mar 17, 10:31 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Mobile, Monroe, Washington	44 min
Mar 17, 11:12 PM CDT	Special Weather Statement	MOB	Baldwin, Mobile	48 min
Mar 17, 11:28 PM CDT	Special Marine Warning	MOB		92 min
Mar 18, 12:02 AM CDT	Special Weather Statement	MOB	Monroe	43 min
Mar 18, 12:07 AM CDT	Special Weather Statement	MOB	Mobile	23 min
Mar 18, 12:32 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	28 min
Mar 18, 12:33 AM CDT	Special Marine Warning	MOB		87 min
Mar 18, 12:38 AM CDT	Special Weather Statement	MOB	Butler	37 min
Mar 18, 12:57 AM CDT	Special Marine Warning	MOB		63 min
Mar 18, 1:48 AM CDT	Special Marine Warning	MOB		87 min
Mar 18, 3:16 AM CDT	Special Marine Warning	MOB		89 min
Mar 18, 4:00 AM CDT	Tornado Warning	MOB	Crenshaw	30 min
Mar 18, 4:09 AM CDT	Special Marine Warning	MOB		51 min
Mar 17, 7:43 PM CDT	Areal Flood Advisory	MOB	George, Greene, Perry, Stone, Wayne	6 hr
Mar 17, 8:22 PM CDT	Severe Thunderstorm Warning	MOB	Perry, Stone	38 min
Mar 17, 8:54 PM CDT	Severe Thunderstorm Warning	MOB	George, Greene, Perry, Stone	28 min
Mar 17, 9:17 PM CDT	Areal Flood Advisory	MOB	Perry, Stone	3 hr

Nearby

Special Weather Statements in Florida, 2021 Every special weather statement 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.