California, 2002

Dense Fog in California, February 21 to 22, 2002

February 21 to 22, 2002 · NWS HNX · 2 events in 2 counties and zones

Although fog formation also occurred in the west-central San Joaquin Valley, extensive fog with visibilities less than 1/4SM visibility developed in th east-central Valley on the morning of the 22nd. Some local areas of dense fog were also present in the northern portions the South San Joaquin Valley but not widespread through those zones.

The toll

Deaths
1
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

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.

Although fog formation also occurred in the west-central San Joaquin Valley, extensive fog with visibilities less than 1/4SM visibility developed in th east-central Valley on the morning of the 22nd. Some local areas of dense fog were also present in the northern portions the South San Joaquin Valley but not widespread through those zones.

Event by event

2 dense fog. Local standard time, as filed.

Dense Fog, E Central Sj Valley

When
February 21, 10:45 PM PST to February 22, 9:00 AM PST
Where
E Central Sj Valley forecast zone
Reported by
AWOS,ASOS,MESONET,ETC

Dense Fog, W Central Sj Valley

When
February 22, 1:00 AM PST to 9:00 AM PST
Where
W Central Sj Valley forecast zone
Deaths
1 direct, 0 indirect
Reported by
OFFICIAL NWS OBS.

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: 5282368, 5282367.