Alert archive / Alabama / Special Weather Statements in 2017

Special Weather Statement, NWS Birmingham, AL

February 8, 2017Pickens County, Alabama

NWS Birmingham, AL issued this special weather statement at Feb 8, 2017, 7:19 PM CST for Pickens County, Alabama. It was in force for 26 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: Feb 8, 2017, 7:19 PM CST (01:19 UTC)
Expired: Feb 8, 2017, 7:45 PM CST
In force: 26 min
Issued by: NWS Birmingham, AL

County Pickens County, AL

The radar

The Columbus AFB radar (KGWX), 57 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, 1.3 hours before the alert went out and 118 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: 311 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 1004 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 288 m²/s²
0-3 km storm-relative helicity: 287 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 15.9

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
Feb 8, 6:02 PM CST	Special Weather Statement	BMX	Marion	43 min
Feb 8, 6:10 PM CST	Special Weather Statement	BMX	Marion	35 min
Feb 8, 6:15 PM CST	Severe Thunderstorm Warning	BMX	Lamar, Marion	30 min
Feb 8, 6:41 PM CST	Special Weather Statement	BMX	Winston	49 min
Feb 8, 7:03 PM CST	Special Weather Statement	BMX	Fayette, Walker	42 min
Feb 8, 7:32 PM CST	Severe Thunderstorm Warning	BMX	Pickens, Tuscaloosa	29 min

Nearby

Special Weather Statements in Alabama, 2017 Every special weather statement in 2017

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.