Returning onshore flow ahead of a weak trough brought dense fog to the coast of Orange and San Diego Counties from the evening of December 9th through the morning of the 10th.
Every event with a place to put it; 8 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS SGX wrote it up.
Returning onshore flow ahead of a weak trough brought dense fog to the coast of Orange and San Diego Counties from the evening of December 9th through the morning of the 10th.
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 Dec 9, 1:43 PM PST, 4 hours 45 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
8 dense fog. Local standard time, as filed.
The Los Alamitos U. S. Army Airfield ASOS reported predominately dense fog, with visibility of 1/4 mile or less for 10 hours.
The Montgomery Field ASOS reported periods of dense fog, with visibility of 1/4 mile or less over a period of 13 hours.
The Brown Field Municipal Airport ASOS reported intermittent periods of dense fog, with visibility of 1/4 mile or less over a period of 13 hours.
The McClellan-Palomar Airport ASOS reported a prolonged period of dense fog, with visibility of 1/4 mile or less impacting the airport for nearly over 12 hours.
The John Wayne Airport ASOS reported a prolonged period of dense fog, with visibility of 1/4 mile or less, that impacted the airport for just over 7 hours.
The San Diego Lindbergh Field ASOS reported a brief 1 hour period of dense fog, with visibility of 1/4 mile or less.
The North Island Naval Air Station ASOS reported a 4 hour period of dense fog, with visibility of 1/4 mile or less.
The Fullerton Municipal Airport ASOS reported a prolonged period of dense fog, with visibility of 1/4 mile or less impacting the airport for just over 5 hours.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2015Every state in 2015This day in weather historyWarnings in California, December 2015
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: 608503, 608507, 608508, 608506, 608505, 608510, 608509, 608504.