Alert archive / Alabama / Special Weather Statements in 2014

Special Weather Statement, NWS Birmingham, AL

October 11, 2014Winston County, Alabama

NWS Birmingham, AL issued this special weather statement at Oct 11, 2014, 7:45 PM CDT for Winston County, Alabama. It was in force for 30 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: Oct 11, 2014, 7:45 PM CDT (00:45 UTC)
Expired: Oct 11, 2014, 8:15 PM CDT
In force: 30 min
Issued by: NWS Birmingham, AL

County Winston County, AL

The radar

The Birmingham radar (KBMX), 103 km from the middle of the area, began a volume at 00:47 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 00:00Z, 0.8 hours before the alert went out and 261 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: 908 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1047 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Birmingham, AL wrote its last area forecast discussion before this special weather statement went out at Oct 11, 6:28 PM CDT, 1 hour 17 minutes earlier.

Area forecast discussion, Oct 11, 6:28 PM CDT, 1 hour 17 minutes before

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Hazardous weather outlook, Oct 11, 6:40 PM CDT, 1 hour 5 minutes before

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In the hours before

Special weather statement, Oct 11, 7:44 PM CDT, 1 minute before

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Special weather statement, Oct 11, 7:45 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 11, 7:44 PM CDT	Special Weather Statement	BMX	Fayette	46 min
Oct 12, 12:18 PM CDT	Special Weather Statement	BMX	Winston	42 min
Oct 12, 2:04 PM CDT	Special Weather Statement	BMX	Marion	41 min
Oct 12, 2:51 PM CDT	Special Weather Statement	BMX	Winston	39 min
Oct 12, 3:18 PM CDT	Areal Flood Advisory	BMX	Marion, Winston	9 hr
Oct 12, 3:53 PM CDT	Special Weather Statement	BMX	Lamar	37 min
Oct 12, 5:05 PM CDT	Special Weather Statement	BMX	Fayette	25 min
Oct 12, 5:27 PM CDT	Special Weather Statement	BMX	Walker	48 min
Oct 12, 6:03 PM CDT	Severe Thunderstorm Warning	BMX	Walker	30 min

Nearby

Special Weather Statements in Alabama, 2014 Every special weather statement in 2014

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.