Alert archive / Alabama / Wind Advisories in 2009

Wind Advisory 1, NWS Huntsville, AL

January 7, 200911 counties in Alabama; Franklin County, Lincoln County, Moore County, Tennessee

NWS Huntsville, AL issued this wind advisory at Jan 7, 2009, 1:09 PM CST for 11 counties in Alabama; Franklin County, Lincoln County, Moore County, Tennessee. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Jan 7, 2009, 1:09 PM CST (19:09 UTC)
Expired: Jan 7, 2009, 4:58 PM CST
In force: 4 hr
Issued by: NWS Huntsville, AL

Counties Colbert County, AL, Cullman County, AL, DeKalb County, AL, Franklin County, AL, Jackson County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Franklin County, TN, Lincoln County, TN, Moore County, TN

The radar

The Northeast Alabama radar (KHTX), 69 km from the middle of the area, began a volume at 19:11 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 12:00Z, 7.2 hours before the alert went out and 258 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: 15 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 524 m above ground
0-6 km bulk shear: 95 kt
0-1 km storm-relative helicity: -170 m²/s²
0-3 km storm-relative helicity: -301 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Huntsville, AL wrote its last area forecast discussion before this wind advisory went out at Jan 6, 5:30 PM CST, 19 hours 39 minutes earlier.

Area forecast discussion, Jan 6, 5:30 PM CST, 19 hours 39 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 6, 11:30 PM CST	Areal Flood Warning	HUN	Cullman, DeKalb, Jackson, Lawrence, Limestone, Madison and 2 more	12 hr
Jan 7, 2:48 AM CST	River Flood Warning	HUN	Colbert, Lauderdale	6 days
Jan 7, 8:08 AM CST	River Flood Warning	HUN	Madison, Marshall, Morgan	3 days

Nearby

Wind Advisories in Alabama, 2009 Wind Advisories in Tennessee, 2009 Every wind advisory in 2009

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.