Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Birmingham, AL

July 13, 2021Greene County, Hale County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 13, 2021, 3:01 PM CDT for Greene County, Hale County, Alabama. It was in force for 44 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 13, 2021, 3:01 PM CDT (20:01 UTC)
Expired: Jul 13, 2021, 3:45 PM CDT
In force: 44 min
Issued by: NWS Birmingham, AL

Counties Greene County, AL, Hale County, AL

The radar

The Birmingham radar (KBMX), 102 km from the middle of the area, began a volume at 20:04 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, 8.0 hours before the alert went out and 101 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: 15 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 865 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

499 
WWUS84 KBMX 132001
SPSBMX

Special Weather Statement
National Weather Service Birmingham AL
301 PM CDT Tue Jul 13 2021
 
ALZ023-031-032-132045-
Greene AL-Hale AL-Tuscaloosa AL-
301 PM CDT Tue Jul 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN TUSCALOOSA...CENTRAL
GREENE AND HALE COUNTIES UNTIL 345 PM CDT...

At 301 PM CDT, Doppler radar was tracking a strong thunderstorm near
Eutaw, moving east at 20 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Eutaw, Greensboro, Moundville, Forkland, Akron, Union, Walden
Quarters, Thornhill, Shelton State Community College, Wedgeworth,
Tishabee, Greensboro Municipal Airport, Mantua, Allison, Duffys Bend,
Sawyerville, Knoxville, Evansville, Snoddy and Englewood.

LAT...LON 3307 8800 3315 8746 3283 8744 3283 8747
      3266 8747 3266 8752 3262 8753 3260 8789
      3261 8787 3262 8788 3262 8791 3263 8793
      3260 8801
TIME...MOT...LOC 2001Z 257DEG 17KT 3284 8784 

$$

25/Owen

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 12:47 PM CDT	Special Weather Statement	BMX	Lamar, Marion	43 min
Jul 13, 1:35 PM CDT	Special Weather Statement	BMX	Fayette, Marion	40 min
Jul 13, 2:09 PM CDT	Special Weather Statement	BMX	Sumter	51 min
Jul 13, 2:26 PM CDT	Special Weather Statement	BMX	Jefferson, Walker, Winston	34 min
Jul 13, 3:03 PM CDT	Special Weather Statement	BMX	Jefferson, Walker, Winston	42 min
Jul 13, 3:45 PM CDT	Special Weather Statement	BMX	Blount, Jefferson	45 min
Jul 13, 3:47 PM CDT	Special Weather Statement	BMX	Hale	43 min
Jul 13, 4:35 PM CDT	Special Weather Statement	BMX	St. Clair, Talladega	40 min
Jul 13, 5:16 PM CDT	Special Weather Statement	BMX	Etowah	44 min
Jul 13, 5:28 PM CDT	Special Weather Statement	BMX	Perry	32 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.