Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Birmingham, AL

August 2, 2021Bullock County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 2, 2021, 1:52 PM CDT for Bullock County, Alabama. It was in force for 38 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 2, 2021, 1:52 PM CDT (18:52 UTC)
Expired
Aug 2, 2021, 2:30 PM CDT
In force
38 min
Issued by
NWS Birmingham, AL

County Bullock County, AL

The radar

The Maxwell AFB radar (KMXX), 60 km from the middle of the area, began a volume at 18:53 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, 6.9 hours before the alert went out and 168 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 2021-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 211 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 2021-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 square meters per square second.193958Sfc1 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
211 J/kg
Mixed-layer CIN
-147 J/kg
Mixed-layer LCL
936 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.4

Open this sounding in Storm Lab

The text

As transmitted.

913 
WWUS84 KBMX 021852
SPSBMX

Special Weather Statement
National Weather Service Birmingham AL
152 PM CDT Mon Aug 2 2021
 
ALZ046-021930-
Bullock AL-
152 PM CDT Mon Aug 2 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BULLOCK COUNTY UNTIL 230
PM CDT...

At 151 PM CDT, Doppler radar was tracking a strong thunderstorm over
Aberfoil, or 7 miles south of Union Springs, moving east at 15 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Pickett, Aberfoil and Three Notch. 

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 3197 8575 3211 8575 3213 8555 3200 8555
      3200 8559 3198 8559 3197 8560
TIME...MOT...LOC 1851Z 270DEG 11KT 3204 8570 

$$

86/Martin

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 8:47 PM CDTSpecial Weather StatementBMXMarengo43 min
Aug 1, 9:11 PM CDTSevere Thunderstorm WarningBMXMarengo49 min
Aug 1, 9:25 PM CDTSpecial Weather StatementBMXDallas50 min
Aug 1, 9:31 PM CDTAreal Flood AdvisoryBMXMarengo3 hr
Aug 1, 10:02 PM CDTSpecial Weather StatementBMXMarengo43 min
Aug 1, 11:08 PM CDTSpecial Weather StatementBMXSumter52 min
Aug 2, 12:24 AM CDTSpecial Weather StatementBMXHale51 min
Aug 2, 1:15 AM CDTSpecial Weather StatementBMXMontgomery30 min
Aug 2, 11:37 AM CDTSpecial Weather StatementBMXMarengo38 min
Aug 2, 2:56 PM CDTSpecial Weather StatementBMXMontgomery34 min
Aug 2, 3:13 PM CDTSpecial Weather StatementBMXMontgomery32 min
Aug 2, 3:29 PM CDTSevere Thunderstorm WarningBMXElmore, Macon, Montgomery25 min
Aug 2, 4:18 PM CDTSpecial Weather StatementBMXRussell27 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.