Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

July 8, 2021Clarke County, Alabama

NWS Mobile, AL issued this special weather statement at Jul 8, 2021, 4:33 PM CDT for Clarke County, Alabama. It was in force for 42 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 8, 2021, 4:33 PM CDT (21:33 UTC)
Expired: Jul 8, 2021, 5:15 PM CDT
In force: 42 min
Issued by: NWS Mobile, AL

County Clarke County, AL

The radar

The Mobile radar (KMOB), 80 km from the middle of the area, began a volume at 21:34 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, 9.6 hours before the alert went out and 216 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: 1570 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 658 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

518 
WWUS84 KMOB 082133
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
433 PM CDT Thu Jul 8 2021
 
ALZ053-055-262-082215-
Clarke AL-Baldwin Inland AL-Monroe AL-
433 PM CDT Thu Jul 8 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHWESTERN MONROE...NORTH CENTRAL BALDWIN AND SOUTHEASTERN CLARKE
COUNTIES UNTIL 515 PM CDT...

At 433 PM CDT, the strong thunderstorm was located 9 miles east of
McIntosh, or 18 miles south of Jackson, moving northeast at 20 mph.

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

Locations impacted include...
Uriah.

LAT...LON 3137 8748 3127 8751 3124 8759 3124 8762
      3122 8762 3111 8788 3117 8795 3121 8795
      3123 8793 3126 8799 3127 8795 3129 8795
      3131 8796 3131 8793 3134 8792 3132 8792
      3136 8789 3145 8776 3147 8762
TIME...MOT...LOC 2133Z 226DEG 17KT 3124 8787 

$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 1:47 PM CDT	Special Weather Statement	MOB	Monroe	43 min
Jul 8, 2:46 PM CDT	Special Weather Statement	MOB	Butler	44 min
Jul 8, 3:24 PM CDT	Special Weather Statement	MOB	Crenshaw	51 min
Jul 8, 4:20 PM CDT	Special Weather Statement	MOB	Mobile	40 min
Jul 8, 5:08 PM CDT	Special Weather Statement	MOB	Escambia	52 min
Jul 8, 5:14 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	31 min
Jul 8, 5:52 PM CDT	Special Weather Statement	MOB	Covington	38 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.