Alert archive / Georgia / Heat Advisories in 2012

Heat Advisory 1, NWS Tallahassee, FL

June 29, 20129 counties in Florida; 26 counties in Georgia; 5 counties in Alabama

NWS Tallahassee, FL issued this heat advisory at Jun 29, 2012, 1:56 PM CDT for 9 counties in Florida; 26 counties in Georgia; 5 counties in Alabama. It took effect at Jun 30, 2012, 11:00 AM CDT. It was in force for 49 hr.

The area

The counties it named.

The facts

Issued: Jun 29, 2012, 1:56 PM CDT (18:56 UTC)
In effect from: Jun 30, 2012, 11:00 AM CDT
Expired: Jul 2, 2012, 12:18 PM CDT
In force: 49 hr
Issued by: NWS Tallahassee, FL

All 40 counties

Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Calhoun County, FL, Gadsden County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Madison County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Brooks County, GA, Calhoun County, GA, Clay County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Grady County, GA, Irwin County, GA, Lanier County, GA, Lee County, GA, Lowndes County, GA, Miller County, GA, Mitchell County, GA, Quitman County, GA, Randolph County, GA, Seminole County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Worth County, GA

The radar

The Tallahassee radar (KTLH), 86 km from the middle of the area, began a volume at 18:55 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, 6.9 hours before the alert went out and 245 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: 625 J/kg
Mixed-layer CIN: -505 J/kg
Mixed-layer LCL: 1854 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 77 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 Tallahassee, FL wrote its last area forecast discussion before this heat advisory went out at Jun 29, 10:20 AM CDT, 3 hours 36 minutes earlier.

Area forecast discussion, Jun 29, 10:20 AM CDT, 3 hours 36 minutes before

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Hazardous weather outlook, Jun 29, 3:54 AM CDT, 10 hours 2 minutes before

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The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 11:40 AM CDT	Areal Flood Warning	TAE	Franklin, Jefferson, Leon, Liberty, Madison, Taylor and 1 more	24 hr

Nearby

Heat Advisories in Georgia, 2012 Heat Advisories in Florida, 2012 Heat Advisories in Alabama, 2012 Every heat advisory 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.