California, 2002

Dense Fog in California, February 5 to 6, 2002

February 5 to 6, 2002 · NWS HNX · 4 events in 4 counties and zones

Dense Fog formation throughout the Central and Southern San Joaquin Valley occurred on both the mornings of the 5th and 6th. Fog was the most dense on the 5th when widespread visibilities as low as 50 feet were reported by the California Highway Patrol and a resulting multiple-vehicle accident involving 87 cars and trucks 20 miles southeast of Fresno left 3 dead and approximately 40 injured.

The toll

Deaths
3
Injuries
40
Property damage
$450,000
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.

Dense Fog formation throughout the Central and Southern San Joaquin Valley occurred on both the mornings of the 5th and 6th. Fog was the most dense on the 5th when widespread visibilities as low as 50 feet were reported by the California Highway Patrol and a resulting multiple-vehicle accident involving 87 cars and trucks 20 miles southeast of Fresno left 3 dead and approximately 40 injured. (Photo courtesy of the Fresno Bee).

Event by event

4 dense fog. Local standard time, as filed.

Dense Fog, E Central Sj Valley

When
February 5, 2:53 AM PST to February 6, 10:00 AM PST
Where
E Central Sj Valley forecast zone
Injuries
40 direct, 0 indirect
Property damage
$450,000
Reported by
AWOS,ASOS,MESONET,ETC

Dense Fog, Sw Sj Valley

When
February 5, 4:00 AM PST to February 6, 10:00 AM PST
Where
Sw Sj Valley forecast zone
Reported by
AWOS,ASOS,MESONET,ETC

Dense Fog, Se Sj Valley

When
February 5, 5:00 AM PST to February 6, 10:00 AM PST
Where
Se Sj Valley forecast zone
Deaths
3 direct, 0 indirect
Reported by
LAW ENFORCEMENT

Dense Fog, W Central Sj Valley

When
February 5, 6:00 AM PST to February 6, 10:00 AM PST
Where
W Central Sj Valley forecast zone
Reported by
LAW ENFORCEMENT

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

More

Every storm in California in 2002Every state in 2002This day in weather historyWarnings in California, February 2002

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: 5282357, 5282358, 5282359, 5282356.