Tennessee, 2025

Heat in Tennessee, June 21, 2025

June 21, 2025 · NWS MEG · 20 events in 20 counties and zones

Persistent southerly winds under a building upper-level ridge pushed air temperatures into the mid 90s along with oppressive humidity. Heat indices peaked in the range of 105 to 109 degrees during the afternoon hours.

Where it happened

Every event with a place to put it; 20 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 20

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS MEG wrote it up.

Persistent southerly winds under a building upper-level ridge pushed air temperatures into the mid 90s along with oppressive humidity. Heat indices peaked in the range of 105 to 109 degrees during the afternoon hours. Afternoon convective coverage over performed, and portions of West Tennessee were spared from the oppressive heat.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Memphis, TN wrote its last area forecast discussion before the first event at Jun 21, 5:13 AM CST, 4 hours 47 minutes earlier.

Area forecast discussion, Jun 21, 5:13 AM CST, 4 hours 47 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

20 heat. Local standard time, as filed.

Heat, Benton

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Benton forecast zone
Reported by: AWOS
Coordinates: 36.070, -88.068 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Carroll

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Carroll forecast zone
Reported by: AWOS
Coordinates: 35.973, -88.450 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Chester

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Chester forecast zone
Reported by: AWOS
Coordinates: 35.422, -88.613 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Crockett

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Crockett forecast zone
Reported by: AWOS
Coordinates: 35.814, -89.139 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Decatur

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Decatur forecast zone
Reported by: AWOS
Coordinates: 35.603, -88.109 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Dyer

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Dyer forecast zone
Reported by: AWOS
Coordinates: 36.059, -89.414 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Fayette

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Fayette forecast zone
Reported by: AWOS
Coordinates: 35.197, -89.414 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Gibson

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Gibson forecast zone
Reported by: AWOS
Coordinates: 35.997, -88.933 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Hardeman

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Hardeman forecast zone
Reported by: AWOS
Coordinates: 35.207, -88.993 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Hardin

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Hardin forecast zone
Reported by: AWOS
Coordinates: 35.199, -88.184 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Haywood

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Haywood forecast zone
Reported by: AWOS
Coordinates: 35.583, -89.284 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Henderson

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Henderson forecast zone
Reported by: AWOS
Coordinates: 35.654, -88.388 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Henry

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Henry forecast zone
Reported by: AWOS
Coordinates: 36.332, -88.301 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Lake

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Lake forecast zone
Reported by: AWOS
Coordinates: 36.335, -89.493 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Lauderdale

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Lauderdale forecast zone
Reported by: AWOS
Coordinates: 35.761, -89.631 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Madison

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Madison forecast zone
Reported by: ASOS
Coordinates: 35.608, -88.838 (the zone’s center; the record gives no point)

ASOS reported maximum heat index of 106 degrees.

Heat, McNairy

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: McNairy forecast zone
Reported by: AWOS
Coordinates: 35.175, -88.564 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Obion

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Obion forecast zone
Reported by: AWOS
Coordinates: 36.358, -89.149 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Tipton

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Tipton forecast zone
Reported by: AWOS
Coordinates: 35.497, -89.759 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

Heat, Weakley

When: June 21, 10:00 AM CST to 7:00 PM CST
Where: Weakley forecast zone
Reported by: AWOS
Coordinates: 36.298, -88.718 (the zone’s center; the record gives no point)

AWOS reported maximum heat index of 106 degrees.

What these are

Heat: Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Tennessee in 2025 Every state in 2025 This day in weather history Warnings in Tennessee, June 2025

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1274787, 1274788, 1274789, 1274791, 1274792, 1274793, 1274794, 1274795, 1274796, 1274797, 1274798, 1274799, 1274800, 1274801, 1274802, 1274803, 1274805, 1274806, 1274808, 1274809.