Alert archive / Georgia / Heat Advisories in 2015

Heat Advisory 13, NWS Tallahassee, FL

July 29, 201516 counties in Florida; 18 counties in Georgia; 5 counties in Alabama

NWS Tallahassee, FL issued this heat advisory at Jul 29, 2015, 1:52 AM CDT for 16 counties in Florida; 18 counties in Georgia; 5 counties in Alabama. It took effect at Jul 29, 2015, 10:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jul 29, 2015, 1:52 AM CDT (06:52 UTC)
In effect from: Jul 29, 2015, 10:00 AM CDT
Expired: Jul 29, 2015, 5:00 PM CDT
In force: 7 hr
Issued by: NWS Tallahassee, FL

All 39 counties

Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Dixie County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Madison County, FL, Taylor County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Brooks County, GA, Calhoun County, GA, Clay County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Grady 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

The radar

The Tallahassee radar (KTLH), 62 km from the middle of the area, began a volume at 06:56 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 00:00Z, 6.9 hours before the alert went out and 276 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: 1214 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1648 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 6 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 Jul 28, 6:48 PM CDT, 7 hours 4 minutes earlier.

Area forecast discussion, Jul 28, 6:48 PM CDT, 7 hours 4 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
Jul 29, 1:11 PM CDT	Special Weather Statement	TAE	Walton	49 min
Jul 29, 1:39 PM CDT	Special Marine Warning	TAE		51 min
Jul 29, 2:07 PM CDT	Special Weather Statement	TAE	Taylor	38 min
Jul 29, 2:11 PM CDT	Severe Thunderstorm Warning	TAE	Madison	34 min
Jul 29, 2:37 PM CDT	Severe Thunderstorm Warning	TAE	Dixie, Taylor	38 min
Jul 29, 2:38 PM CDT	Special Marine Warning	TAE		67 min
Jul 29, 2:55 PM CDT	Severe Thunderstorm Warning	TAE	Dixie	65 min
Jul 29, 3:11 PM CDT	Areal Flood Advisory	TAE	Taylor	3 hr
Jul 29, 3:26 PM CDT	Severe Thunderstorm Warning	TAE	Jefferson, Madison, Taylor	49 min
Jul 29, 3:42 PM CDT	Special Marine Warning	TAE		63 min
Jul 29, 3:53 PM CDT	Special Marine Warning	TAE		67 min
Jul 29, 3:53 PM CDT	Severe Thunderstorm Warning	TAE	Jefferson, Taylor	37 min
Jul 29, 3:54 PM CDT	Special Marine Warning	TAE		66 min
Jul 29, 3:58 PM CDT	Severe Thunderstorm Warning	TAE	Holmes, Jackson, Washington	47 min
Jul 29, 4:22 PM CDT	Severe Thunderstorm Warning	TAE	Franklin, Gulf, Liberty	53 min
Jul 29, 4:29 PM CDT	Severe Thunderstorm Warning	TAE	Taylor	31 min
Jul 29, 4:44 PM CDT	Severe Thunderstorm Warning	TAE	Holmes, Walton, Washington	46 min
Jul 29, 4:55 PM CDT	Special Marine Warning	TAE		65 min
Jul 29, 4:57 PM CDT	Special Marine Warning	TAE		63 min
Jul 29, 5:18 PM CDT	Severe Thunderstorm Warning	TAE	Gadsden	42 min
Jul 29, 5:27 PM CDT	Severe Thunderstorm Warning	TAE	Bay, Walton, Washington	34 min
Jul 29, 5:39 PM CDT	Severe Thunderstorm Warning	TAE	Calhoun	51 min
Jul 29, 5:57 PM CDT	Special Marine Warning	TAE		63 min
Jul 29, 6:27 PM CDT	Severe Thunderstorm Warning	TAE	Gadsden	48 min
Jul 29, 6:47 PM CDT	Special Marine Warning	TAE		58 min
Jul 29, 1:08 PM CDT	Special Weather Statement	TAE	Lanier	37 min
Jul 29, 1:34 PM CDT	Special Weather Statement	TAE	Lowndes	41 min
Jul 29, 1:43 PM CDT	Severe Thunderstorm Warning	TAE	Lanier, Lowndes	47 min
Jul 29, 5:52 PM CDT	Severe Thunderstorm Warning	TAE	Tift, Turner, Worth	38 min
Jul 29, 2:03 PM CDT	Special Weather Statement	TAE	Coffee, Dale, Henry	57 min

Nearby

Heat Advisories in Georgia, 2015 Heat Advisories in Florida, 2015 Heat Advisories in Alabama, 2015 Every heat advisory in 2015

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.