Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

July 23, 2021Washington County, Alabama

NWS Mobile, AL issued this special weather statement at Jul 23, 2021, 5:30 PM CDT for Washington County, Alabama. It was in force for 30 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 23, 2021, 5:30 PM CDT (22:30 UTC)
Expired
Jul 23, 2021, 6:00 PM CDT
In force
30 min
Issued by
NWS Mobile, AL

County Washington County, AL

The radar

The Mobile radar (KMOB), 91 km from the middle of the area, began a volume at 22:30 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

Jackson, MS (KJAN), launched 12:00Z, 10.5 hours before the alert went out and 189 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-pSkew-T log-p diagram, Jackson, MS at 12:00Z on 2021-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 991 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2021-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
991 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
958 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

337 
WWUS84 KMOB 232230
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
530 PM CDT Fri Jul 23 2021
 
ALZ052-MSZ067-076-232300-
Washington AL-Greene MS-Wayne MS-
530 PM CDT Fri Jul 23 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHWESTERN WASHINGTON...SOUTHEASTERN WAYNE AND NORTHEASTERN GREENE
COUNTIES UNTIL 600 PM CDT...

At 530 PM CDT, the strong thunderstorm was located 4 miles northeast
of State Line, or 10 miles west of Chatom, moving southeast at 15
mph.

Wind gusts in excess of 35 mph will be possible with this storm.

Locations impacted include...
Chatom, State Line, Buckatunna and Fruitdale. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3144 8809 3127 8845 3162 8863 3170 8840
TIME...MOT...LOC 2230Z 330DEG 15KT 3149 8843 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 8:36 PM CDTSpecial Weather StatementMOBWilcox39 min
Jul 22, 9:05 PM CDTSpecial Weather StatementMOBButler40 min
Jul 23, 3:14 PM CDTSpecial Weather StatementMOBClarke, Monroe46 min
Jul 23, 3:33 PM CDTSpecial Weather StatementMOBBaldwin42 min
Jul 23, 4:05 PM CDTSpecial Weather StatementMOBMobile40 min
Jul 23, 5:41 PM CDTSpecial Weather StatementMOBBaldwin49 min
Jul 23, 5:47 PM CDTSevere Thunderstorm WarningMOBBaldwin43 min
Jul 23, 6:09 PM CDTSpecial Weather StatementMOBBaldwin51 min
Jul 23, 6:28 PM CDTSpecial Marine WarningMOB80 min
Jul 23, 6:43 PM CDTSpecial Weather StatementMOBBaldwin32 min
Jul 23, 4:42 PM CDTSpecial Weather StatementMOBWayne48 min
Jul 23, 5:35 PM CDTSpecial Weather StatementMOBPerry40 min

Nearby

Special Weather Statements in Alabama, 2021Every 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.