California, 2005

Heavy Snow and Dense Fog in California, December 28 to 29, 2005

December 28 to 29, 2005 · NWS HNX · 4 events in 4 counties and zones

A quick moving but relatively weak frontal system crossed the Southern Sierra Nevada early on the 28th bringing new snow amounts of 7 to 10 inches. With the additional moisture on the adjacent Central and Southern San Joaquin Valley floor from the frontal passage dense fog developed later that evening before dissipating by midnight.

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
4

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 HNX wrote it up.

A quick moving but relatively weak frontal system crossed the Southern Sierra Nevada early on the 28th bringing new snow amounts of 7 to 10 inches. With the additional moisture on the adjacent Central and Southern San Joaquin Valley floor from the frontal passage dense fog developed later that evening before dissipating by midnight.

Event by event

3 dense fog, 1 heavy snow. Local standard time, as filed.

Heavy Snow, S Sierra Mtns

When
December 28, 12:00 AM PST to 5:00 PM PST
Where
S Sierra Mtns forecast zone
Reported by
AWOS,ASOS,MESONET,ETC

Dense Fog, E Central S.J. Valley

When
December 28, 7:00 PM PST to 11:00 PM PST
Where
E Central S.J. Valley forecast zone
Reported by
AWOS,ASOS,MESONET,ETC

Dense Fog, Sw S.J. Valley

When
December 28, 8:00 PM PST to 11:00 PM PST
Where
Sw S.J. Valley forecast zone
Reported by
AWOS,ASOS,MESONET,ETC

Dense Fog, Se S.J. Valley

When
December 28, 10:45 PM PST to December 29, 1:15 AM PST
Where
Se S.J. Valley forecast zone
Reported by
AWOS,ASOS,MESONET,ETC

What these are

Heavy Snow
Snowfall reaching the local warning threshold without the other hazards of a winter storm.
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

More

Every storm in California in 2005Every state in 2005This day in weather historyWarnings in California, December 2005

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: 5489189, 5489190, 5489191, 5489192.