California, 2024

Excessive Heat in California, June 30, 2024

June 30, 2024 · NWS PSR · 5 events in 5 counties and zones

The Desert Southwest was under the influence of a strong ridge of high pressure, leading to excessive heat conditions for parts of the area at the end of June. Any heat-associated fatalities that may have occurred during this event are unknown.

Where it happened

Every event with a place to put it; 5 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
5

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 PSR wrote it up.

The Desert Southwest was under the influence of a strong ridge of high pressure, leading to excessive heat conditions for parts of the area at the end of June. Any heat-associated fatalities that may have occurred during this event are unknown.

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 Phoenix, AZ wrote its last area forecast discussion before the first event at Jun 30, 4:25 AM PST, 4 hours 35 minutes earlier.

Area forecast discussion, Jun 30, 4:25 AM PST, 4 hours 35 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

5 excessive heat. Local standard time, as filed.

Excessive Heat, Imperial County Southwest

When
June 30, 9:00 AM PST to 11:59 PM PST
Where
Imperial County Southwest forecast zone
Reported by
County Official
Coordinates
33.040, -115.365 (the zone’s center; the record gives no point)

Excessive Heat, Imperial County West

When
June 30, 9:00 AM PST to 11:59 PM PST
Where
Imperial County West forecast zone
Reported by
County Official
Coordinates
33.040, -115.365 (the zone’s center; the record gives no point)

Excessive Heat, Imperial Valley

When
June 30, 9:00 AM PST to 11:59 PM PST
Where
Imperial Valley forecast zone
Reported by
County Official
Coordinates
33.040, -115.365 (the zone’s center; the record gives no point)

Excessive Heat, Palo Verde Valley

When
June 30, 9:00 AM PST to 11:59 PM PST
Where
Palo Verde Valley forecast zone
Reported by
County Official
Coordinates
33.392, -115.679 (the zone’s center; the record gives no point)

Excessive Heat, Chuckwalla Valley

When
June 30, 9:00 AM PST to 11:59 PM PST
Where
Chuckwalla Valley forecast zone
Reported by
County Official
Coordinates
33.744, -115.994 (the zone’s center; the record gives no point)

What these are

Excessive Heat
Heat at or above the local excessive heat warning criteria, or heat that caused deaths.

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

The same day elsewhere

More

Every storm in California in 2024Every state in 2024This day in weather historyWarnings in California, June 2024

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: 1297725, 1297726, 1297727, 1297728, 1297729.