Excessive heat over a Mid-July weekend brought very hot temperatures to interior northern California and Major HeatRisk. Widespread triple digit temperatures were observed in the Valley and foothills.
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.
The episode as NWS STO wrote it up.
Excessive heat over a Mid-July weekend brought very hot temperatures to interior northern California and Major HeatRisk. Widespread triple digit temperatures were observed in the Valley and foothills. Redding Municipal Airport reached 111 degrees. Record high temperatures were set at Sacramento (109 degrees), Stockton (109) and Sacramento Executive Airport (107) for July 16th. Very warm overnight low temperatures were also observed, generally in the 70s to mid 80s. Records were set for overnight temperatures on July 17th, with Sacramento reaching 76 degrees, Sacramento Executive Airport reaching 72 degrees, and Modesto Airport reaching 75 degrees. Redding Municipal Airport tied it's previous record of 83 degrees for the morning low. Warmest lows were observed in northern Sacramento Valley and surrounding foothills.
12 heat. Local standard time, as filed.
Redding Municipal Airport tied it's previous record of 83 degrees for the morning low. Across the zone, highs reached 105 to 110 degrees on July 15 and 16. Morning lows were in the upper 70s to mid 80s.
Record high temperatures were set at Sacramento (109 degrees) and Sacramento Executive Airport (107) for July 16th. Records were set for overnight temperatures on July 17th, with Sacramento reaching 76 degrees, and Sacramento Executive Airport reaching 72 degrees. Temperatures across the zone were in the 105 to 110 degree range, with overnight lows in the mid to upper 70s.
Record high temperatures were set at Stockton on July 16th, reaching 109 degrees. Records were set for overnight low temperatures at Modesto Airport on July 17th, reaching 75 degrees.
Daytime highs reached 105 to 110 degrees on July 15 and 16. Overnight lows were in the upper 70s.
Daytime highs reached 100 to 106 degrees across the zone on July 15 and 16.
Daytime highs across the zone reached the 90s to 105 degrees on July 15 and 16. Overnight lows were in the mid 70s to low 80s.
Overnight lows were in the low to mid 70s. Daytime highs were in the upper 90s to 105 degrees range across the zone on July 15 and 16.
Daytime highs were in the upper 90s to 105 degree range on July 15 and 16. Overnight lows were in the 60s.
Daytime highs reached the upper 80s to near 105 degree range.
Daytime highs reached the mid 80s to near 100 degree range.
Daytime highs reached the upper 90s to 105 degree range, with overnight lows in the mid 70s to low 80s.
Daytime highs reached the upper 90s to 105 degree range, with overnight lows in the upper 70s to mid 80s.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2023Every state in 2023This day in weather historyWarnings in California, July 2023
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: 1125084, 1125086, 1125087, 1132225, 1132226, 1132235, 1132260, 1132261, 1132262, 1132263, 1132264, 1132265.