Alert archive / Alabama / Heat Advisories in 2007

Heat Advisory 3, NWS Birmingham, AL

August 22, 200739 counties in Alabama

NWS Birmingham, AL issued this heat advisory at Aug 22, 2007, 9:42 AM CDT for 39 counties in Alabama. It took effect at Aug 22, 2007, 10:00 AM CDT. It was in force for 33 hr.

The area

The counties it named.

The facts

Issued: Aug 22, 2007, 9:42 AM CDT (14:42 UTC)
In effect from: Aug 22, 2007, 10:00 AM CDT
Expired: Aug 23, 2007, 7:00 PM CDT
In force: 33 hr
Issued by: NWS Birmingham, AL

All 39 counties

Autauga County, AL, Barbour County, AL, Bibb County, AL, Blount County, AL, Bullock County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Dallas County, AL, Elmore County, AL, Etowah County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lamar County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Marion County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 2.7 hours before the alert went out and 198 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: 674 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 1570 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 29 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 heat advisory 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 heat advisory went out at Aug 22, 6:13 AM CDT, 3 hours 29 minutes earlier.

Area forecast discussion, Aug 22, 6:13 AM CDT, 3 hours 29 minutes before

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Hazardous weather outlook, Aug 22, 5:44 AM CDT, 3 hours 58 minutes before

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Nearby

Heat Advisories in Alabama, 2007 Every heat advisory in 2007

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.