Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

August 23, 2021Mobile County, Alabama

NWS Mobile, AL issued this special weather statement at Aug 23, 2021, 4:11 PM CDT for Mobile County, Alabama. It was in force for 49 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: Aug 23, 2021, 4:11 PM CDT (21:11 UTC)
Expired: Aug 23, 2021, 5:00 PM CDT
In force: 49 min
Issued by: NWS Mobile, AL
Hail: 0.00 in
Wind: 40

County Mobile County, AL

The radar

The Mobile radar (KMOB), 27 km from the middle of the area, began a volume at 21:10 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 12:00Z, 9.2 hours before the alert went out and 144 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: 766 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1180 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 3 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.

426 
WWUS84 KMOB 232111
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
411 PM CDT Mon Aug 23 2021
 
ALZ263-265-232200-
Mobile Coastal AL-Mobile Central AL-
411 PM CDT Mon Aug 23 2021

...Strong thunderstorms will impact portions of southwestern Mobile
County through 500 PM CDT...

At 410 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 5 miles west of Theodore to near Grand Bay to
near Helena. Movement was east at 15 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Tillmans Corner, Theodore, Grand Bay, Bayou La Batre and Coden. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

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

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

&&

LAT...LON 3034 8820 3036 8819 3037 8822 3036 8825
      3033 8826 3037 8826 3037 8824 3039 8829
      3037 8831 3040 8834 3039 8840 3049 8840
      3063 8829 3061 8811 3058 8809 3060 8810
      3060 8806 3057 8809 3043 8810 3033 8818
TIME...MOT...LOC 2110Z 279DEG 14KT 3056 8827 3044 8836 3045 8849 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

MM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 22, 9:46 PM CDT	Heat Advisory	MOB	Baldwin, Mobile	20 hr
Aug 22, 10:12 PM CDT	Special Weather Statement	MOB	Washington	48 min
Aug 22, 10:57 PM CDT	Special Weather Statement	MOB	Mobile	48 min
Aug 22, 11:26 PM CDT	Special Weather Statement	MOB	Mobile	64 min
Aug 22, 11:29 PM CDT	Special Marine Warning	MOB		61 min
Aug 22, 11:46 PM CDT	Special Weather Statement	MOB	Baldwin, Escambia	59 min
Aug 23, 1:03 AM CDT	Special Marine Warning	MOB		57 min
Aug 23, 1:11 AM CDT	Special Weather Statement	MOB	Baldwin	34 min
Aug 23, 1:52 AM CDT	Special Marine Warning	MOB		98 min
Aug 23, 2:10 AM CDT	Special Marine Warning	MOB		48 min
Aug 23, 2:51 AM CDT	Special Marine Warning	MOB		84 min
Aug 23, 4:13 AM CDT	Special Marine Warning	MOB		92 min
Aug 23, 5:47 AM CDT	Special Marine Warning	MOB		88 min
Aug 23, 6:58 AM CDT	Special Marine Warning	MOB		92 min
Aug 23, 8:30 AM CDT	Special Marine Warning	MOB		45 min
Aug 23, 4:40 PM CDT	Special Marine Warning	MOB		95 min
Aug 23, 4:58 PM CDT	Special Marine Warning	MOB		77 min
Aug 23, 5:25 PM CDT	Special Marine Warning	MOB		46 min
Aug 23, 5:29 PM CDT	Special Marine Warning	MOB		61 min
Aug 23, 2:07 AM CDT	Special Weather Statement	MOB	Escambia	23 min
Aug 23, 4:20 PM CDT	Areal Flood Advisory	MOB	Okaloosa	2 hr
Aug 23, 4:24 PM CDT	Special Weather Statement	MOB	Okaloosa	51 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.