Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Birmingham, AL

August 10, 2021Lee County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 10, 2021, 1:21 PM CDT for Lee County, Alabama. It was in force for 24 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 10, 2021, 1:21 PM CDT (18:21 UTC)
Expired: Aug 10, 2021, 1:45 PM CDT
In force: 24 min
Issued by: NWS Birmingham, AL
Hail: 0.00 in
Wind: 40

County Lee County, AL

The radar

The Maxwell AFB radar (KMXX), 50 km from the middle of the area, began a volume at 18:23 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.4 hours before the alert went out and 104 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: 1201 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 1041 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 14 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.

926 
WWUS84 KBMX 101821
SPSBMX

Special Weather Statement
National Weather Service Birmingham AL
121 PM CDT Tue Aug 10 2021
 
ALZ038-047-101845-
Lee AL-Chambers AL-
121 PM CDT Tue Aug 10 2021

...Strong thunderstorms will impact portions of northwestern Lee and
southeastern Chambers Counties through 145 PM CDT...

At 121 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Valley to Oak Bowery to near Notasulga.
Movement was nearly stationary.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Auburn, Opelika, Valley, Lanett, Notasulga, Cusseta, Beans Mill,
Huguley, Auburn University, Fairfax, River View, Oak Bowery,
Loachapoka, Robert G. Pitts Airport, Lanett Municipal Airport, I 85
Welcome Center At Lanett, Chewacla State Park and Mount Jefferson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 3276 8514 3275 8514 3250 8547 3250 8549
      3254 8559 3262 8570 3278 8545 3289 8519
      3286 8518 3285 8516 3281 8517 3278 8512
TIME...MOT...LOC 1821Z 084DEG 6KT 3284 8517 3275 8541 3263 8564 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

32/Davis

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 4:31 AM CDT	Heat Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 28 more	38 hr
Aug 10, 2:08 PM CDT	Special Weather Statement	BMX	Russell	37 min
Aug 10, 2:39 PM CDT	Special Weather Statement	BMX	Chambers	36 min
Aug 10, 2:40 PM CDT	Special Weather Statement	BMX	Macon	35 min
Aug 10, 3:19 PM CDT	Special Weather Statement	BMX	Jefferson	26 min
Aug 10, 3:30 PM CDT	Areal Flood Advisory	BMX	Jefferson	2 hr
Aug 10, 3:47 PM CDT	Flash Flood Warning	BMX	Jefferson	2 hr
Aug 10, 3:50 PM CDT	Special Weather Statement	BMX	Bullock	40 min
Aug 10, 3:59 PM CDT	Special Weather Statement	BMX	Jefferson	31 min
Aug 10, 4:19 PM CDT	Special Weather Statement	BMX	Blount	26 min
Aug 10, 4:32 PM CDT	Special Weather Statement	BMX	Jefferson	28 min
Aug 10, 4:35 PM CDT	Special Weather Statement	BMX	Pike	40 min
Aug 10, 4:46 PM CDT	Special Weather Statement	BMX	Blount	29 min
Aug 10, 5:23 PM CDT	Areal Flood Advisory	BMX	Montgomery	98 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.