Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

August 14, 2021Butler County, Alabama

NWS Mobile, AL issued this special weather statement at Aug 14, 2021, 6:28 PM CDT for Butler County, Alabama. It was in force for 47 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 14, 2021, 6:28 PM CDT (23:28 UTC)
Expired
Aug 14, 2021, 7:15 PM CDT
In force
47 min
Issued by
NWS Mobile, AL
Hail
0.00 in
Wind
50

County Butler County, AL

The radar

The Maxwell AFB radar (KMXX), 113 km from the middle of the area, began a volume at 23:31 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, 11.5 hours before the alert went out and 155 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 12:00Z on 2021-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1021 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 12:00Z on 2021-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 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
1021 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
989 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
-6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

493 
WWUS84 KMOB 142328
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
628 PM CDT Sat Aug 14 2021
 
ALZ057-150015-
Butler AL-
628 PM CDT Sat Aug 14 2021

...A strong thunderstorm will impact portions of central Butler
County through 715 PM CDT...

At 627 PM CDT, Doppler radar was tracking a strong thunderstorm near
Greenville, moving southwest at 15 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Greenville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

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 3189 8657 3181 8646 3161 8664 3176 8683
TIME...MOT...LOC 2327Z 047DEG 12KT 3179 8660 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

$$

MM

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 1:02 PM CDTRip Current StatementMOBBaldwin, Mobile4 days
Aug 14, 1:02 PM CDTHigh Surf AdvisoryMOBBaldwin, Mobile57 hr
Aug 14, 2:16 PM CDTSpecial Weather StatementMOBBaldwin44 min
Aug 14, 3:14 PM CDTSpecial Weather StatementMOBMobile46 min
Aug 14, 4:13 PM CDTTropical Storm WatchMOBCovington, Escambia30 hr
Aug 14, 4:41 PM CDTSpecial Marine WarningMOB94 min
Aug 14, 4:46 PM CDTSpecial Marine WarningMOB56 min
Aug 14, 5:52 PM CDTSpecial Marine WarningMOB83 min
Aug 14, 4:01 PM CDTSpecial Weather StatementMOBOkaloosa, Santa Rosa59 min
Aug 14, 4:18 PM CDTSpecial Weather StatementMOBEscambia57 min
Aug 14, 4:33 PM CDTSevere Thunderstorm WarningMOBEscambia, Santa Rosa42 min
Aug 14, 4:39 PM CDTSpecial Weather StatementMOBOkaloosa66 min
Aug 14, 4:49 PM CDTSpecial Weather StatementMOBEscambia56 min
Aug 14, 5:10 PM CDTAreal Flood AdvisoryMOBSanta Rosa3 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.