California, 2021

Dense Fog in California, November 11, 2021

November 11, 2021 · NWS HNX · 3 events in 3 counties and zones

High pressure continued to strengthen over California during the morning of November 11. With another night of clear skies and light winds across the San Joaquin Valley, an area of dense fog formed overnight south of Fresno and north of Bakersfield impacting travel on State Routes 99, 43 and 198.

Where it happened

Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
3

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.

High pressure continued to strengthen over California during the morning of November 11. With another night of clear skies and light winds across the San Joaquin Valley, an area of dense fog formed overnight south of Fresno and north of Bakersfield impacting travel on State Routes 99, 43 and 198. The fog lifted into a low cloud deck after sunrise and dissipated by late morning.

The radar

The national radar mosaic for the moment the first event began.

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Event by event

3 dense fog. Local standard time, as filed.

Dense Fog, Visalia - Porterville - Reedley

When
November 11, 12:05 AM PST to 8:20 AM PST
Where
Visalia - Porterville - Reedley forecast zone
Reported by
AWOS
Coordinates
36.489, -119.224 (the zone’s center; the record gives no point)

Visibility below a quarter mile was reported in Visalia and Porterville.

Dense Fog, Delano - Wasco - Shafter

When
November 11, 2:35 AM PST to 4:15 AM PST
Where
Delano - Wasco - Shafter forecast zone
Reported by
AWOS
Coordinates
35.879, -119.115 (the zone’s center; the record gives no point)

Visibility below a quarter mile was reported in Delano.

Dense Fog, Hanford - Corcoran - Lemoore

When
November 11, 2:50 AM PST to 6:00 AM PST
Where
Hanford - Corcoran - Lemoore forecast zone
Reported by
ASOS
Coordinates
36.351, -119.421 (the zone’s center; the record gives no point)

Visibility below a quarter mile was reported in Hanford.

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 2021Every state in 2021This day in weather historyWarnings in California, November 2021

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: 985141, 985139, 985140.