Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

August 1, 2021Choctaw County, Alabama

NWS Mobile, AL issued this special weather statement at Aug 1, 2021, 7:03 PM CDT for Choctaw 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
Aug 1, 2021, 7:03 PM CDT (00:03 UTC)
Expired
Aug 1, 2021, 7:45 PM CDT
In force
42 min
Issued by
NWS Mobile, AL

County Choctaw County, AL

The radar

The Mobile radar (KMOB), 163 km from the middle of the area, began a volume at 00:05 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 00:00Z, 0.1 hours before the alert went out and 167 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, Birmingham, AL at 00:00Z on 2021-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 941 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, Birmingham, AL at 00:00Z on 2021-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
941 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
1260 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

407 
WWUS84 KMOB 020003
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
703 PM CDT Sun Aug 1 2021
 
ALZ051-020045-
Choctaw AL-
703 PM CDT Sun Aug 1 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHEASTERN CHOCTAW COUNTY UNTIL 745 PM CDT...

At 703 PM CDT, the strong thunderstorm was located 4 miles west of
Pennington, or 10 miles northeast of Butler, moving southeast at 15
mph.

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

Locations impacted include...
Pennington.

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 3226 8801 3218 8801 3215 8802 3214 8804
      3211 8805 3209 8804 3206 8807 3207 8808
      3207 8810 3206 8811 3200 8808 3221 8822
      3230 8811
TIME...MOT...LOC 0003Z 313DEG 15KT 3222 8813 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 8:12 PM CDTSpecial Weather StatementMOBConecuh63 min
Aug 1, 8:17 PM CDTSpecial Weather StatementMOBChoctaw43 min
Aug 1, 8:39 PM CDTSevere Thunderstorm WarningMOBChoctaw51 min
Aug 1, 8:50 PM CDTSpecial Weather StatementMOBWilcox55 min
Aug 1, 9:02 PM CDTSpecial Weather StatementMOBChoctaw43 min
Aug 1, 9:06 PM CDTAreal Flood AdvisoryMOBChoctaw3 hr
Aug 1, 9:18 PM CDTSevere Thunderstorm WarningMOBConecuh57 min
Aug 1, 9:35 PM CDTFlash Flood WarningMOBChoctaw6 hr
Aug 1, 9:51 PM CDTSevere Thunderstorm WarningMOBWilcox31 min
Aug 1, 10:21 PM CDTSpecial Weather StatementMOBWilcox54 min
Aug 1, 10:39 PM CDTSpecial Weather StatementMOBMonroe51 min
Aug 1, 10:40 PM CDTSpecial Weather StatementMOBConecuh65 min
Aug 2, 2:23 PM CDTSpecial Weather StatementMOBConecuh37 min
Aug 2, 2:59 PM CDTSpecial Weather StatementMOBMobile46 min
Aug 2, 3:04 PM CDTSpecial Weather StatementMOBEscambia26 min
Aug 2, 3:10 PM CDTAreal Flood AdvisoryMOBMobile2 hr
Aug 2, 3:29 PM CDTSpecial Weather StatementMOBCrenshaw31 min
Aug 2, 3:32 PM CDTSpecial Marine WarningMOB43 min
Aug 2, 3:42 PM CDTSpecial Weather StatementMOBMobile48 min
Aug 2, 3:47 PM CDTSpecial Weather StatementMOBCrenshaw43 min
Aug 2, 4:32 PM CDTAreal Flood AdvisoryMOBCovington118 min
Aug 2, 5:37 PM CDTSpecial Marine WarningMOB83 min
Aug 2, 2:16 PM CDTSpecial Weather StatementMOBSanta Rosa29 min
Aug 2, 2:34 PM CDTSpecial Weather StatementMOBOkaloosa26 min
Aug 2, 2:56 PM CDTAreal Flood AdvisoryMOBOkaloosa2 hr

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.