Dense Fog in California, June 16, 2017

Name: Dense Fog in California, June 16, 2017
Start: 2017-06-16T02:00
End: 2017-06-16T07:30
Location: California

June 16, 2017 · NWS SGX · 1 event in 1 county or zone

A weak ridge of high pressure and a shallow marine layer contributed to dense fog along the San Diego County coast on the 16th.

Where it happened

Every event with a place to put it; 1 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: 1

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 SGX wrote it up.

A weak ridge of high pressure and a shallow marine layer contributed to dense fog along the San Diego County coast on the 16th.

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 San Diego, CA wrote its last area forecast discussion before the first event at Jun 15, 8:02 PM PST, 5 hours 58 minutes earlier.

Area forecast discussion, Jun 15, 8:02 PM PST, 5 hours 58 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

1 dense fog. Local standard time, as filed.

Dense Fog, San Diego County Coastal Areas

When: June 16, 2:00 AM PST to 7:30 AM PST
Where: San Diego County Coastal Areas forecast zone
Reported by: ASOS
Coordinates: 33.028, -116.770 (the zone’s center; the record gives no point)

Dense fog rolled into coastal areas during the early morning hours and lingered through daybreak. Multiple ASOS stations, including Brown Field Municipal Airport, Miramar MCAS/Mitscher Field Airport, Imperial Beach Naval Outlying Field, and Mcclellan-Palomar Airport reported visibility of 1/4 mile or less.

What these are

Dense Fog: Fog reducing visibility to a quarter mile or less, filed where it caused accidents or disruption.

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

The same day elsewhere

Every storm in California in 2017 Every state in 2017 This day in weather history Warnings in California, June 2017

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: 708086.