Alert archive / Georgia / Heat Advisories in 2025

Heat Advisory 4, NWS Atlanta, GA

July 20, 202541 counties in Georgia

NWS Atlanta, GA issued this heat advisory at Jul 20, 2025, 12:47 PM EDT for 41 counties in Georgia. It took effect at Jul 21, 2025, 12:00 PM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Jul 20, 2025, 12:47 PM EDT (16:47 UTC)
In effect from: Jul 21, 2025, 12:00 PM EDT
Expired: Jul 21, 2025, 8:00 PM EDT
In force: 8 hr
Issued by: NWS Atlanta, GA

All 41 counties

Baldwin County, GA, Banks County, GA, Barrow County, GA, Bibb County, GA, Bleckley County, GA, Butts County, GA, Clarke County, GA, Crawford County, GA, Dodge County, GA, Emanuel County, GA, Glascock County, GA, Greene County, GA, Hancock County, GA, Houston County, GA, Jackson County, GA, Jasper County, GA, Jefferson County, GA, Johnson County, GA, Jones County, GA, Laurens County, GA, Madison County, GA, Monroe County, GA, Montgomery County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Peach County, GA, Pulaski County, GA, Putnam County, GA, Taliaferro County, GA, Telfair County, GA, Toombs County, GA, Treutlen County, GA, Twiggs County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Wheeler County, GA, Wilkes County, GA, Wilkinson County, GA

The radar

The Robins AFB radar (KJGX), 47 km from the middle of the area, began a volume at 16:51 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

Charleston AFB, SC (KCHS), launched 12:00Z, 4.8 hours before the alert went out and 300 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: 1315 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1115 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -81 m²/s²
0-3 km storm-relative helicity: -80 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 Atlanta, GA wrote its last area forecast discussion before this heat advisory went out at Jul 20, 6:35 AM EDT, 6 hours 12 minutes earlier.

Area forecast discussion, Jul 20, 6:35 AM EDT, 6 hours 12 minutes before

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Hazardous weather outlook, Jul 20, 3:40 AM EDT, 9 hours 7 minutes before

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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 20, 2:44 PM EDT	Special Weather Statement	FFC	Emanuel, Jefferson	46 min
Jul 20, 5:41 PM EDT	Special Weather Statement	FFC	Morgan	34 min
Jul 20, 6:08 PM EDT	Special Weather Statement	FFC	Greene	37 min
Jul 20, 6:15 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Hancock, Morgan, Putnam	16 min

Nearby

Heat Advisories in Georgia, 2025 Every heat advisory in 2025

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.