California, 1998

Dense Fog in California, May 7, 1998

May 7, 1998 · NWS HNX · 2 events in 2 counties and zones

The moist conditions caused by late and near record rains this spring gave way to infrequent dense fog formation in the month of May in the Central and north portions of the Southern San Joaquin Valley. Visibilities dropped to less than 300 feet in west Merced County (near State Highway 152 and Interstate Highway-5) by 0600 PST with other reports of dense fog in Fresno and Kings Counties.

The toll

Deaths
0
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.

The moist conditions caused by late and near record rains this spring gave way to infrequent dense fog formation in the month of May in the Central and north portions of the Southern San Joaquin Valley. Visibilities dropped to less than 300 feet in west Merced County (near State Highway 152 and Interstate Highway-5) by 0600 PST with other reports of dense fog in Fresno and Kings Counties.

Event by event

2 dense fog. Local standard time, as filed.

Dense Fog, Merced/Sw Madera/W Fresno

When
May 7, 6:00 AM PST to 7:00 AM PST
Where
Merced/Sw Madera/W Fresno forecast zone

Dense Fog, Kings/W Tulare/Nw Kern

When
May 7, 6:00 AM PST to 7:00 AM PST
Where
Kings/W Tulare/Nw Kern forecast zone

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 1998Every state in 1998This day in weather historyWarnings in California, May 1998

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 2026-09-24. Each event’s entry at NCEI: 5636132, 5636133.