Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

July 11, 2021Choctaw County, Clarke County, Washington County, Alabama

NWS Mobile, AL issued this special weather statement at Jul 11, 2021, 1:34 PM CDT for Choctaw County, Clarke County, Washington County, Alabama. It was in force for 41 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: Jul 11, 2021, 1:34 PM CDT (18:34 UTC)
Expired: Jul 11, 2021, 2:15 PM CDT
In force: 41 min
Issued by: NWS Mobile, AL

Counties Choctaw County, AL, Clarke County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 141 km from the middle of the area, began a volume at 18:36 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, 6.6 hours before the alert went out and 185 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: 1204 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 527 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: 5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

409 
WWUS84 KMOB 111834
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
134 PM CDT Sun Jul 11 2021
 
ALZ051>053-111915-
Clarke AL-Choctaw AL-Washington AL-
134 PM CDT Sun Jul 11 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHERN CHOCTAW...NORTHERN WASHINGTON AND NORTHWESTERN CLARKE
COUNTIES UNTIL 215 PM CDT...

At 132 PM CDT, a cluster of strong thunderstorms was located 6 miles 
east of Toxey, or 10 miles south of Butler, moving northeast at 25 
mph.

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

Locations impacted include...
Butler, Chatom, Saint Stephens, Leroy, Millry, Silas, Fruitdale,
Coffeeville, Gilbertown and Toxey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3213 8804 3209 8804 3205 8812 3199 8810
      3201 8809 3199 8807 3199 8775 3154 8785
      3132 8844 3187 8847 3217 8817
TIME...MOT...LOC 1832Z 244DEG 23KT 3193 8820 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 9:40 AM CDT	Special Weather Statement	MOB	Mobile	50 min
Jul 11, 11:10 AM CDT	Special Weather Statement	MOB	Conecuh, Escambia	50 min
Jul 11, 11:46 AM CDT	Special Weather Statement	MOB	Mobile	29 min
Jul 11, 12:05 PM CDT	Special Weather Statement	MOB	Conecuh, Monroe	40 min
Jul 11, 1:50 PM CDT	Special Weather Statement	MOB	Mobile	25 min
Jul 11, 2:29 PM CDT	Special Weather Statement	MOB	Baldwin, Mobile	46 min
Jul 11, 3:27 PM CDT	Areal Flood Advisory	MOB	Clarke, Washington	3 hr
Jul 11, 3:53 PM CDT	Special Weather Statement	MOB	Conecuh	52 min
Jul 11, 4:38 PM CDT	Areal Flood Advisory	MOB	Baldwin, Clarke, Conecuh, Escambia, Monroe	3 hr
Jul 11, 4:59 PM CDT	Special Marine Warning	MOB		61 min
Jul 11, 12:19 PM CDT	Special Weather Statement	MOB	Santa Rosa	41 min
Jul 11, 1:24 PM CDT	Special Weather Statement	MOB	Okaloosa	36 min
Jul 11, 4:56 PM CDT	Special Weather Statement	MOB	Santa Rosa	49 min
Jul 11, 5:09 PM CDT	Special Weather Statement	MOB	Escambia	51 min
Jul 11, 5:21 PM CDT	Areal Flood Advisory	MOB	Escambia, Santa Rosa	3 hr
Jul 11, 5:46 PM CDT	Special Weather Statement	MOB	Okaloosa	44 min
Jul 11, 12:49 PM CDT	Special Weather Statement	MOB	George	41 min
Jul 11, 12:59 PM CDT	Special Weather Statement	MOB	Wayne	46 min
Jul 11, 1:37 PM CDT	Special Weather Statement	MOB	Greene, Perry	38 min
Jul 11, 2:09 PM CDT	Areal Flood Advisory	MOB	Greene, Perry, Wayne	3 hr
Jul 11, 2:56 PM CDT	Special Weather Statement	MOB	Stone	49 min
Jul 11, 3:45 PM CDT	Special Weather Statement	MOB	George, Stone	45 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.