Alert archive / Alabama / Special Weather Statements in 2018

Special Weather Statement, NWS Huntsville, AL

June 17, 2018Franklin County, Alabama

NWS Huntsville, AL issued this special weather statement at Jun 17, 2018, 3:00 PM CDT for Franklin 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: Jun 17, 2018, 3:00 PM CDT (20:00 UTC)
Expired: Jun 17, 2018, 3:30 PM CDT
In force: 30 min
Issued by: NWS Huntsville, AL

County Franklin County, AL

The radar

The Columbus AFB radar (KGWX), 84 km from the middle of the area, began a volume at 20:03 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 12:00Z, 8.0 hours before the alert went out and 177 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: 1267 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 691 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 7:13 PM CDT	Special Weather Statement	HUN	Cullman	17 min
Jun 16, 7:36 PM CDT	Special Weather Statement	HUN	Cullman	24 min
Jun 17, 1:32 PM CDT	Special Weather Statement	HUN	DeKalb	13 min
Jun 17, 1:49 PM CDT	Special Weather Statement	HUN	DeKalb	11 min
Jun 17, 2:29 PM CDT	Special Weather Statement	HUN	Franklin	46 min
Jun 17, 2:49 PM CDT	Special Weather Statement	HUN	Morgan	11 min
Jun 17, 3:15 PM CDT	Special Weather Statement	HUN	Lawrence	15 min
Jun 17, 3:37 PM CDT	Special Weather Statement	HUN	Lawrence	23 min
Jun 17, 3:40 PM CDT	Special Weather Statement	HUN	Marshall	35 min
Jun 17, 3:54 PM CDT	Special Weather Statement	HUN	Marshall	21 min
Jun 17, 4:07 PM CDT	Special Weather Statement	HUN	Marshall	23 min
Jun 17, 4:32 PM CDT	Special Weather Statement	HUN	Marshall	13 min
Jun 17, 4:50 PM CDT	Special Weather Statement	HUN	Cullman	25 min
Jun 17, 4:53 PM CDT	Special Weather Statement	HUN	DeKalb	37 min
Jun 17, 5:24 PM CDT	Special Weather Statement	HUN	Cullman	36 min
Jun 17, 5:39 PM CDT	Special Weather Statement	HUN	Franklin	36 min
Jun 17, 6:22 PM CDT	Special Weather Statement	HUN	Lincoln	23 min

Nearby

Special Weather Statements in Alabama, 2018 Every special weather statement in 2018

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.