Alert archive / Alabama / Special Weather Statements in 2011

Special Weather Statement, NWS Huntsville, AL

March 5, 2011Franklin County, Alabama

NWS Huntsville, AL issued this special weather statement at Mar 5, 2011, 10:41 AM CST for Franklin County, Alabama. It was in force for 49 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: Mar 5, 2011, 10:41 AM CST (16:41 UTC)
Expired: Mar 5, 2011, 11:30 AM CST
In force: 49 min
Issued by: NWS Huntsville, AL

County Franklin County, AL

The radar

The Columbus AFB radar (KGWX), 124 km from the middle of the area, began a volume at 16:44 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

Little Rock, AR (KLZK), launched 12:00Z, 4.7 hours before the alert went out and 225 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: 3 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 510 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: -70 m²/s²
0-3 km storm-relative helicity: -54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Mar 5, 3:30 PM CST	Special Weather Statement	HUN	Cullman	60 min
Mar 5, 3:43 PM CST	Flash Flood Warning	HUN	Cullman	3 hr
Mar 5, 4:09 PM CST	Special Weather Statement	HUN	Morgan	51 min
Mar 5, 5:59 PM CST	Areal Flood Warning	HUN	Madison	8 hr
Mar 5, 12:15 PM CST	Special Weather Statement	HUN	Moore	45 min
Mar 5, 12:17 PM CST	Special Weather Statement	HUN	Moore	43 min

Nearby

Special Weather Statements in Alabama, 2011 Every special weather statement in 2011

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.