California, 2020

Excessive Heat and Heat in California, July 11 to 12, 2020

July 11 to 12, 2020 · NWS HNX · 15 events in 15 counties and zones

S. strengthened over California during the weekend of July 11 and 12 providing the Kern County Deserts with a period of excessive heat and the San Joaquin Valley, West Side Hills and Sierra foothills with a period of significant heat.

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
15

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 large upper ridge over the southwestern U.S. strengthened over California during the weekend of July 11 and 12 providing the Kern County Deserts with a period of excessive heat and the San Joaquin Valley, West Side Hills and Sierra foothills with a period of significant heat. Afternoon temperatures were well into the triple digits in these areas during the weekend although no new records were set. Temperatures lowered some on July 13 in reponse to the ridge breaking down as a trough moved through the Pacific Northwest.

Event by event

13 heat, 2 excessive heat. Local standard time, as filed.

Heat, West Side Hills

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
West Side Hills forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, San Joaquin Confluence

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
San Joaquin Confluence forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, Merced and Madera

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Merced and Madera forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, Western San Joaquin Valley

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Western San Joaquin Valley forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, Foggy Bottom

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Foggy Bottom forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, Fresno

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Fresno forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, Tulare County

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Tulare County forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, Southern Kings County

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Southern Kings County forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, Western San Joaquin Valley in Kern County

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Western San Joaquin Valley in Kern County forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, Eastern San Joaquin Valley in Kern County

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Eastern San Joaquin Valley in Kern County forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, Bakersfield

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Bakersfield forecast zone
Reported by
Mesonet

Daytime highs ranged between 104 and 108 degrees on July 11 and July 12.

Heat, Central Sierra Foothills

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Central Sierra Foothills forecast zone
Reported by
Mesonet

Daytime highs ranged between 100 and 104 degrees on July 11 and July 12.

Heat, Southern Sierra Foothills

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Southern Sierra Foothills forecast zone
Reported by
Mesonet

Daytime highs ranged between 102 and 106 degrees on July 11 and July 12.

Excessive Heat, Indian Wells Valley

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Indian Wells Valley forecast zone
Reported by
Mesonet

Daytime highs ranged between 108 and 113 degrees on July 11 and July 12.

Excessive Heat, Kern County Desert

When
July 11, 10:00 AM PST to July 12, 7:00 PM PST
Where
Kern County Desert forecast zone
Reported by
Mesonet

Daytime highs ranged between 106 and 111 degrees on July 11 and July 12.

What these are

Heat
Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.
Excessive Heat
Heat at or above the local excessive heat warning criteria, or heat that caused deaths.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in California in 2020Every state in 2020This day in weather historyWarnings in California, July 2020

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: 892950, 892952, 892953, 892954, 892955, 892956, 892957, 892958, 892959, 892960, 892961, 892962, 892963, 892964, 892965.