California, 2023Heat in California, June 30, 2023
June 30, 2023 · NWS HNX · 21 events in 21 counties and zones
A large area of high pressure strengthened off the California coast on June 29 then build inland into California on June 30. This resulted in the first heat wave of the season across the area between June 30 and July 3.
Every event with a place to put it; 21 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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- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
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- Marine and coastal
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 21
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.
A large area of high pressure strengthened off the California coast on June 29 then build inland into California on June 30. This resulted in the first heat wave of the season across the area between June 30 and July 3. High temperatures across the San Joaquin Valley, lower Sierra foothills, West Side Hills and the Kern River Valley were generally between 102 to 107 degrees on June 30.
Heat, West Side Mountains North of Highway 198
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- West Side Mountains North of Highway 198 forecast zone
- Reported by
- Mesonet
- Coordinates
- 36.975, -120.184 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Los Banos-Dos Palos
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Los Banos-Dos Palos forecast zone
- Reported by
- Mesonet
- Coordinates
- 36.975, -120.184 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Merced-Madera-Mendota
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Merced-Madera-Mendota forecast zone
- Reported by
- Mesonet
- Coordinates
- 37.056, -120.043 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Planada-Legrand-Snelling
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Planada-Legrand-Snelling forecast zone
- Reported by
- Mesonet
- Coordinates
- 37.331, -120.129 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Coalinga - Avenal
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Coalinga - Avenal forecast zone
- Reported by
- Mesonet
- Coordinates
- 36.417, -119.732 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, West Side of Fresno and Kings Counties
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- West Side of Fresno and Kings Counties forecast zone
- Reported by
- Mesonet
- Coordinates
- 36.417, -119.732 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Caruthers - San Joaquin - Selma
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Caruthers - San Joaquin - Selma forecast zone
- Reported by
- Mesonet
- Coordinates
- 36.489, -119.224 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Fresno - Clovis
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Fresno - Clovis forecast zone
- Reported by
- Mesonet
- Coordinates
- 36.758, -119.649 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, West Side Mountains South of Highway 198
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- West Side Mountains South of Highway 198 forecast zone
- Reported by
- Mesonet
- Coordinates
- 36.059, -119.398 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Buttonwillow- Lost Hills - I5
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Buttonwillow- Lost Hills - I5 forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.709, -119.273 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Delano - Wasco - Shafter
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Delano - Wasco - Shafter forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.879, -119.115 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Hanford - Corcoran - Lemoore
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Hanford - Corcoran - Lemoore forecast zone
- Reported by
- Mesonet
- Coordinates
- 36.351, -119.421 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Visalia - Porterville - Reedley
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Visalia - Porterville - Reedley forecast zone
- Reported by
- Mesonet
- Coordinates
- 36.489, -119.224 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Buena Vista
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Buena Vista forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.343, -118.730 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Bakersfield
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Bakersfield forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.343, -118.730 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Southeast San Joaquin Valley
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Southeast San Joaquin Valley forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.782, -118.765 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, South End San Joaquin Valley
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- South End San Joaquin Valley forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.343, -118.730 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Mariposa - Madera Foothills
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Mariposa - Madera Foothills forecast zone
- Reported by
- Mesonet
- Coordinates
- 37.331, -120.129 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Fresno - Tulare Foothills
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Fresno - Tulare Foothills forecast zone
- Reported by
- Mesonet
- Coordinates
- 36.489, -119.224 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, South End Sierra Foothills
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- South End Sierra Foothills forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.782, -118.765 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
Heat, Kern River Valley
- When
- June 30, 10:00 AM PST to 7:00 PM PST
- Where
- Kern River Valley forecast zone
- Reported by
- Mesonet
- Coordinates
- 35.782, -118.765 (the zone’s center; the record gives no point)
Daytime highs ranged between 102 and 107 degrees on June 30.
- Heat
- Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Heat in Texas, June 30, 20231 death · 5 events
- Hail and Damaging Winds in Illinois, June 30, 2023$10 million · 3 in hail · 14 events
- Wildfire in Idaho, June 30, 2023$9.2 million · 1 event
- Excessive Heat and Damaging Winds in Tennessee, June 30, 2023$493,000 · 56 kt wind · 40 events
- Damaging Winds in Georgia, June 30, 2023$66,000 · 56 kt wind · 56 events
- Hail and Damaging Winds in Kansas, June 30, 2023$452,000 · 2.5 in hail · 10 events
- Hail and Damaging Winds in Iowa, June 30, 2023$167,000 · 1 in hail · 11 events
- Hail and Damaging Winds in Indiana, June 30, 2023$132,000 · 1 in hail · 5 events
- Damaging Winds in Tennessee, June 30, 2023$85,000 · 52 kt wind · 2 events
- Flash Flooding and Flood in Kansas, June 30, 20231 injured · 2 in hail · 33 events
- Damaging Winds and Lightning Strike in Maryland, June 30, 2023$38,000 · 56 kt wind · 5 events
- Hail and Damaging Winds in Kansas, June 30, 20234 in hail · 29 events
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: 1098210, 1098211, 1098212, 1098213, 1098214, 1098215, 1098216, 1098217, 1098218, 1098219, 1098220, 1098221, 1098222, 1098223, 1098224, 1098225, 1098226, 1098227, 1098228, 1098229, 1098230.