A large upper high pressure center strengthened over the Great Basin during the Labor Day weekend (September 4 to September 6) resulting in temperatures rising to much above normal levels over the San Joaquin Valley, West Side Hills and Kern County Deserts on September 6.  The dangerous heat remained prevalent over the area through September 9 prompting the issuance of heat highlights as the large upper high prodcued a pronounced southeast flow over the area.  A trough moved into northern California during the morning of September 10 bringing an end to the dangerous heat as afternoon highs remained below the century mark at most stations.

Heat in WESTERN SAN JOAQUIN VALLEY, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Heat in WEST SIDE HILLS, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Heat in SAN JOAQUIN CONFLUENCE, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Heat in MERCED AND MADERA, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Heat in FOGGY BOTTOM, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Heat in FRESNO, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Heat in TULARE COUNTY, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Excessive Heat in COALINGA - AVENAL, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in BUTTONWILLOW- LOST HILLS - I5, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in DELANO - WASCO - SHAFTER, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in HANFORD - CORCORAN - LEMOORE, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Heat in WESTERN SAN JOAQUIN VALLEY IN KERN COUNTY, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Excessive Heat in BAKERSFIELD, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in SOUTHEAST SAN JOAQUIN VALLEY, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in SOUTH END SAN JOAQUIN VALLEY, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in WEST SIDE OF FRESNO AND KINGS COUNTIES, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in CARUTHERS - SAN JOAQUIN - SELMA, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in KERN COUNTY DESERT, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 6, 7 and 8.

Excessive Heat in LOS BANOS-DOS PALOS, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in MERCED-MADERA-MENDOTA, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in PLANADA-LEGRAND-SNELLING, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in INDIAN WELLS VALLEY, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 6, 7 and 8.

Excessive Heat in VISALIA - PORTERVILLE - REEDLEY, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in BUENA VISTA, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Excessive Heat in FRESNO - CLOVIS, CALIFORNIA
From 09-SEP-21 00:00:00 to 09-SEP-21 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 105 and 110 degrees on September 9.

Heat in SOUTHERN KINGS COUNTY, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Heat in EASTERN SAN JOAQUIN VALLEY IN KERN COUNTY, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.

Heat in BAKERSFIELD, CALIFORNIA
From 06-SEP-21 10:00:00 to 08-SEP-21 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on September 6, 7 and 8.