Dense Fog in California, December 12, 2014

Name: Dense Fog in California, December 12, 2014
Start: 2014-12-12T06:30
End: 2014-12-12T08:00
Location: California

December 12, 2014 · NWS PSR · 1 event in 1 county or zone

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 PSR wrote it up.

During the morning hours on December 12th, areas of dense fog developed in the Imperial valley, running the length of the valley from the south shores of the Salton Sea to El Centro. Trained weather spotters reported visibilities reduced to just one quarter of a mile in dense fog. This resulted in hazardous driving conditions during the morning rush hour, and led to the issuance of a Dense Fog Advisory for the Imperial valley. Fortunately, no accidents or injuries were reported due to the dense fog.

Event by event

1 dense fog. Local standard time, as filed.

Dense Fog, Imperial County Except the Lower Colorado River Valley

When: December 12, 6:30 AM PST to 8:00 AM PST
Where: Imperial County Except the Lower Colorado River Valley forecast zone
Reported by: Trained Spotter

Areas of dense fog developed across the Imperial Valley during the early morning hours on December 12th, affecting communities such as Brawley, Calexico, El Centro and Seeley. According to a trained weather spotter located 1 mile south of Seeley, dense fog lowered visibility to 1/4 mile at about 0700PST. The fog persisted into the middle of the morning, creating hazardous driving conditions during the morning rush hour. In addition, the dense fog resulted in the issuance of a Dense Fog Advisory for the Imperial Valley. Fortunately, no accidents or injuries were reported due to the dense fog.

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 2014 Every state in 2014 This day in weather history Warnings in California, December 2014

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 2026-09-30. Each event’s entry at NCEI: 552316.