Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

March 31, 2021Choctaw County, Alabama

NWS Mobile, AL issued this special weather statement at Mar 31, 2021, 12:25 PM CDT for Choctaw County, Alabama. It was in force for 50 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 31, 2021, 12:25 PM CDT (17:25 UTC)
Expired: Mar 31, 2021, 1:15 PM CDT
In force: 50 min
Issued by: NWS Mobile, AL

County Choctaw County, AL

The radar

The Birmingham radar (KBMX), 158 km from the middle of the area, began a volume at 17:27 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

Birmingham, AL (KBMX), launched 12:00Z, 5.4 hours before the alert went out and 158 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: 455 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 527 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 283 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

As transmitted.

951 
WWUS84 KMOB 311725
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
1225 PM CDT Wed Mar 31 2021
 
ALZ051-311815-
Choctaw AL-
1225 PM CDT Wed Mar 31 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHERN CHOCTAW COUNTY UNTIL 115 PM CDT...

At 1225 PM CDT, the strong thunderstorm was located 5 miles northeast
of Snell, or 14 miles south of Cuba, moving east at 35 mph.

Wind gusts of 40 to 50 mph will be possible with this storm.

Locations impacted include...
Lisman and Pennington. 

A Severe Thunderstorm Watch remains in effect until 500 PM CDT for
southwestern Alabama.

LAT...LON 3231 8793 3228 8793 3228 8794 3230 8794
      3230 8800 3228 8801 3228 8802 3226 8801
      3218 8801 3215 8802 3214 8804 3210 8805
      3209 8845 3231 8842
TIME...MOT...LOC 1725Z 259DEG 32KT 3223 8841 

$$

JLH

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 7:45 PM CDT	Areal Flood Advisory	MOB	Washington	108 min
Mar 30, 8:55 PM CDT	River Flood Warning	MOB	Baldwin, Mobile	21 days
Mar 31, 3:35 AM CDT	Gale Watch	MOB		6 hr
Mar 31, 3:35 AM CDT	Gale Warning	MOB		33 hr
Mar 31, 3:35 AM CDT	Marine Dense Fog Advisory	MOB		8 hr
Mar 31, 3:35 AM CDT	Small Craft Advisory	MOB		57 hr
Mar 31, 12:51 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	54 min
Mar 31, 1:01 PM CDT	Tornado Warning	MOB	Choctaw	9 min
Mar 31, 1:29 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	61 min
Mar 31, 1:43 PM CDT	Freeze Watch	MOB	Butler, Choctaw, Clarke, Conecuh, Crenshaw, Monroe and 2 more	13 hr
Mar 31, 1:43 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	47 min
Mar 31, 1:45 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	15 min
Mar 31, 2:04 PM CDT	Special Weather Statement	MOB	Washington	56 min
Mar 31, 2:14 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh, Monroe, Wilcox	61 min
Mar 31, 3:15 PM CDT	Special Weather Statement	MOB	Butler, Crenshaw	60 min
Mar 31, 3:58 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	33 min
Mar 31, 4:13 PM CDT	Severe Thunderstorm Warning	MOB	Covington	47 min
Mar 31, 4:30 PM CDT	Special Weather Statement	MOB	Baldwin, Covington, Escambia, Mobile	45 min
Mar 31, 4:40 PM CDT	Severe Thunderstorm Warning	MOB	Covington	44 min
Mar 31, 5:03 PM CDT	Special Marine Warning	MOB		42 min
Mar 31, 6:20 PM CDT	Special Marine Warning	MOB		26 min
Mar 31, 6:23 PM CDT	Special Marine Warning	MOB		65 min
Mar 31, 6:49 PM CDT	Special Marine Warning	MOB		62 min
Mar 31, 5:15 PM CDT	Special Weather Statement	MOB	Okaloosa	45 min
Mar 31, 5:29 PM CDT	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	46 min
Mar 30, 7:10 PM CDT	Special Weather Statement	MOB	Perry	50 min
Mar 30, 7:13 PM CDT	Tornado Warning	MOB	Greene, Perry	47 min
Mar 30, 7:32 PM CDT	Tornado Warning	MOB	Greene	58 min
Mar 30, 8:29 PM CDT	Tornado Warning	MOB	Greene	31 min
Mar 31, 12:36 PM CDT	Severe Thunderstorm Warning	MOB	Wayne	54 min
Mar 31, 1:20 PM CDT	Special Weather Statement	MOB	Greene	40 min

Nearby

Special Weather Statements in Alabama, 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.