Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Huntsville, AL

February 29, 2012Lauderdale County, Alabama

NWS Huntsville, AL issued this special weather statement at Feb 29, 2012, 3:51 PM CST for Lauderdale 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: Feb 29, 2012, 3:51 PM CST (21:51 UTC)
Expired: Feb 29, 2012, 4:15 PM CST
In force: 24 min
Issued by: NWS Huntsville, AL

County Lauderdale County, AL

The radar

The Northeast Alabama radar (KHTX), 131 km from the middle of the area, began a volume at 21:52 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

Nashville Metro, TN (KBNA), launched 12:00Z, 9.9 hours before the alert went out and 156 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: 580 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 510 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 365 m²/s²
0-3 km storm-relative helicity: 485 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 8.5

Open this sounding in Storm Lab

The text

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

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 29, 2:39 PM CST	Special Weather Statement	HUN	Colbert	36 min
Feb 29, 3:16 PM CST	Special Weather Statement	HUN	Colbert	29 min
Feb 29, 3:19 PM CST	Special Weather Statement	HUN	Franklin	26 min
Feb 29, 5:17 PM CST	Special Weather Statement	HUN	Morgan	28 min
Feb 29, 5:39 PM CST	Special Weather Statement	HUN	Cullman	36 min
Feb 29, 5:51 PM CST	Special Weather Statement	HUN	Marshall	24 min
Feb 29, 3:54 PM CST	Special Weather Statement	HUN	Lincoln, Moore	36 min
Feb 29, 4:26 PM CST	Special Weather Statement	HUN	Franklin, Lincoln, Moore	49 min

Nearby

Special Weather Statements in Alabama, 2012 Every special weather statement in 2012

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.