Alert archive / Alabama / Special Weather Statements in 2024

Special Weather Statement, NWS Birmingham, AL

August 18, 2024Clay County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 18, 2024, 8:21 PM CDT for Clay 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 18, 2024, 8:21 PM CDT (01:21 UTC)
Expired: Aug 18, 2024, 8:45 PM CDT
In force: 24 min
Issued by: NWS Birmingham, AL
Hail: 0.00 in
Wind: 40

County Clay County, AL

The radar

The Maxwell AFB radar (KMXX), 68 km from the middle of the area, began a volume at 01:22 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, 1.4 hours before the alert went out and 78 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: 1247 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1682 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 195 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 7:01 PM CDT	Special Weather Statement	BMX	Barbour, Bullock	44 min
Aug 18, 7:04 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	41 min
Aug 18, 7:09 PM CDT	Special Weather Statement	BMX	Tallapoosa	36 min
Aug 18, 7:36 PM CDT	Special Weather Statement	BMX	Talladega	24 min
Aug 18, 7:38 PM CDT	Severe Thunderstorm Warning	BMX	Pike	49 min
Aug 18, 7:42 PM CDT	Special Weather Statement	BMX	Shelby	48 min
Aug 18, 8:35 PM CDT	Special Weather Statement	BMX	Tallapoosa	40 min
Aug 18, 8:46 PM CDT	Special Weather Statement	BMX	Chambers	29 min
Aug 18, 8:57 PM CDT	Special Weather Statement	BMX	Autauga	33 min
Aug 18, 9:12 PM CDT	Special Weather Statement	BMX	Lowndes	48 min

Nearby

Special Weather Statements in Alabama, 2024 Every special weather statement in 2024

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.