A strong surge of moisture associated with Hurricane Hillary pushed northward into central California on August 19. This moisture surge resulted in the development of showers and thunderstorms mainly the San Joaquin Valley during the afternoon and evening hours with the most noticeable impact being outflow wind gusts. Hillary weakened into a Tropical Storm and moved into southern California on August 20 resulting in moderate to heavy rainfall across the mountains and deserts of Kern County with several stations picking up between 3 and 5 inches of rainfall with a few stations receiving more than 5.5 inches of rainfall. Much of the Sierra Nevada south of Kings Canyon picked up between 1 and 3 inches of rainfall while the south San Joaquin Valley measured between a half inch and an inch. Further north, rainfall amounts were lower, but many new daily rainfall records were set for August 20. Numerous reports of flash flooding and road closures were observed in Kern County during the afternoon of August 20 through the early morning of August 21. The rains dissipated during the morning of August 21, but an offshore trough provided for enough instability for thunderstorms to break out over the area during the afternoon of August 21 which produced locally heavy rainfall. The trough lifted northeast on August 22 resulting in the moisture being pushed out of our area and drier conditions prevailed for the remainder of the week.

Funnel Cloud in FRESNO, CALIFORNIA
From 19-AUG-23 17:10:00 to 19-AUG-23 17:10:00 (PST-8)
Location: BIOLA JCT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Fresno TV station showed a video of a funnel cloud in Northwest Fresno near the intersection of Shaw Ave. and Brawley Ave.

Thunderstorm Wind in FRESNO, CALIFORNIA
From 19-AUG-23 17:10:00 to 19-AUG-23 17:10:00 (PST-8)
Location: HAMMOND
Magnitude: 35.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a very large downed tree on N. Fulton Ave. between the intersections of E. Bremer Ave. and E. Dennett Ave.

Thunderstorm Wind in FRESNO, CALIFORNIA
From 19-AUG-23 17:17:00 to 19-AUG-23 17:17:00 (PST-8)
Location: TARPEY
Magnitude: 35.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported downed power lines in the roadway at the intersection of E. McKinley Ave. and N. DeWolf Ave.

Thunderstorm Wind in FRESNO, CALIFORNIA
From 19-AUG-23 17:21:00 to 19-AUG-23 17:21:00 (PST-8)
Location: (FAT) AIR TERMINAL
Magnitude: 35.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a downed tree across the roadway on E. Cornell Ave near the intersection of N. Sierra Vista Ave.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 06:38:00 to 21-AUG-23 11:00:00 (PST-8)
Location: CREAL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported flooding and debris in roadway completely covering the intersection of Oak Creek Rd. and CalPortland Access Rd.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 07:42:00 to 21-AUG-23 11:00:00 (PST-8)
Location: RANDSBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported heavy flooding on Redrock-Randsburg Rd. between US 395 and SR 14 which required the road to be closed.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 11:59:00 to 20-AUG-23 14:59:00 (PST-8)
Location: GRAPE VINE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported several large rocks as least 1 foot in diameter washed up on northbound Interstate 5 just south of Grapevine Rd..

Flood in KERN, CALIFORNIA
From 20-AUG-23 13:32:00 to 20-AUG-23 16:32:00 (PST-8)
Location: ROSEDALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of roadway flooding at the intersection of Kratzmeyer Rd. and Nord Ave.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 16:46:00 to 20-AUG-23 22:46:00 (PST-8)
Location: KERTO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Kern County Emergency Manager reported Copus Rd. was closed between Old River Rd. and Basic School Rd. due to heavy flooding.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 16:54:00 to 20-AUG-23 22:54:00 (PST-8)
Location: BEALVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported large rocks across the roadway at the intersection of SR 58 and SR 223. near Bealville.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 18:56:00 to 21-AUG-23 06:56:00 (PST-8)
Location: RIDGECREST
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The Ridgecrest Fire Department reported heavy flooding in a portion of Ridgecrest that resulted in an evacuation for areas bounded by West Ridgecrest Blvd, North Alvord St. West Las Flores Ave. and North China Lake Blvd. Other portions of Ridgecrest were impacted by soil erosion and instability resulting in heavy runoff.

Thunderstorm Wind in FRESNO, CALIFORNIA
From 19-AUG-23 17:10:00 to 19-AUG-23 17:10:00 (PST-8)
Location: FIG GARDEN VLG
Magnitude: 35.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a downed tree blocking the roadway on N. Safford Ave. between E. Rialto Ave. and E. Santa Ana Ave.

Thunderstorm Wind in FRESNO, CALIFORNIA
From 19-AUG-23 17:30:00 to 19-AUG-23 17:30:00 (PST-8)
Location: SUNNYSIDE
Magnitude: 35.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a power pole and lines down at the intersection of E. Olive Ave. and N. Temperance Ave.

Thunderstorm Wind in FRESNO, CALIFORNIA
From 19-AUG-23 17:22:00 to 19-AUG-23 17:22:00 (PST-8)
Location: LAS PALMAS
Magnitude: 35.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a large tree branch in the roadway on E. White Ave. near the intersection of N. Villa Ave.

Flash Flood in KERN, CALIFORNIA
From 19-AUG-23 17:29:00 to 19-AUG-23 20:29:00 (PST-8)
Location: ERIC
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flooding and debris on the Cameron overpass on SR 58 caused a closure in both directions as SR 58 became impassible.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 10:35:00 to 20-AUG-23 22:35:00 (PST-8)
Location: WHEELER RIDGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a large rock blocking lanes on Interstate 5 south of Wheeler Ridge Rd.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 10:53:00 to 20-AUG-23 22:53:00 (PST-8)
Location: ERIC
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported large rocks in the roadway on Sand Canyon Rd. 3 miles north of Tehachapi Blvd. which required clearing with a plow.

Flood in KERN, CALIFORNIA
From 20-AUG-23 13:47:00 to 20-AUG-23 16:47:00 (PST-8)
Location: TEHACHAPI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding on Sand Canyon Rd. north of SR 58.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 14:36:00 to 20-AUG-23 17:36:00 (PST-8)
Location: FRAZIER PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported flooding causing erosion and running over the roadway at the intersection of Elm Trail and Mount Pinos Way in Frazier Park.

Flood in KERN, CALIFORNIA
From 20-AUG-23 17:23:00 to 20-AUG-23 20:23:00 (PST-8)
Location: RAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding on Garlock Rd. near SR 395.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 17:36:00 to 20-AUG-23 23:36:00 (PST-8)
Location: DEMOCRAT SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported large rocks on SR 178 southwest of Lake Isabella.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 20:20:00 to 21-AUG-23 02:20:00 (PST-8)
Location: MONOLITH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Kern County officials reported a closure of Tehachapi Blvd. east of Tehachapi Willow Springs Rd. due to heavy flooding.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 20:30:00 to 21-AUG-23 02:30:00 (PST-8)
Location: ONYX
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Kern County officials reported a road closure of South Kelso Valley Rd. and Birch Springs Pass due to heavy flooding.

Flood in KERN, CALIFORNIA
From 20-AUG-23 22:14:00 to 21-AUG-23 02:14:00 (PST-8)
Location: MOJAVE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Caltrans reported a road closure of SR 14 between SR 58 and SR 178 due to flooding.

Flood in KERN, CALIFORNIA
From 20-AUG-23 23:20:00 to 21-AUG-23 03:20:00 (PST-8)
Location: LEBEC
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding on Lebec Rd. from Frazier Mountain Park Rd. to Landfill Rd.

Thunderstorm Wind in KERN, CALIFORNIA
From 19-AUG-23 15:09:00 to 19-AUG-23 15:09:00 (PST-8)
Location: MC FARLAND
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported multiple trees blocking the right lane of northbound SR 99 at Sherwood Ave. in McFarland.

Thunderstorm Wind in FRESNO, CALIFORNIA
From 19-AUG-23 16:45:00 to 19-AUG-23 16:45:00 (PST-8)
Location: SUNNYSIDE
Magnitude: 48.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Public report of 50 trees blown down at Belmont Country Club. A storm survey indicated that the damage was caused by straight line winds from a microburst.

Thunderstorm Wind in MARIPOSA, CALIFORNIA
From 19-AUG-23 19:00:00 to 19-AUG-23 19:00:00 (PST-8)
Location: COULTERVILLE
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

The PG&E station at Penon Blanco reported a measured wind gust of 62 mph with a thunderstorm.

Thunderstorm Wind in MARIPOSA, CALIFORNIA
From 19-AUG-23 19:10:00 to 19-AUG-23 19:10:00 (PST-8)
Location: PENDOLA GARDENS
Magnitude: 43.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a downed tree blocking the roadway on Old Toll Rd. near the intersection of Pendola Garden Rd.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 11:01:00 to 20-AUG-23 14:01:00 (PST-8)
Location: GRAPE VINE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a large rock on northbound Interstate 5 south south of Grapevine Rd. near the truck escape ramp.

Debris Flow in KERN, CALIFORNIA
From 20-AUG-23 11:02:00 to 20-AUG-23 14:02:00 (PST-8)
Location: LEBEC
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a large rock on Interstate 5 south of Lebec.

Flood in KERN, CALIFORNIA
From 20-AUG-23 14:45:00 to 21-AUG-23 02:45:00 (PST-8)
Location: MONOLITH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Kern County Emergency Manager reported Oak Creek Blvd. was closed between Tehachapi Willow Springs Rd. and Koch St. due to flooding.

Strong Wind in MERCED-MADERA-MENDOTA, CALIFORNIA
From 20-AUG-23 15:30:00 to 20-AUG-23 15:30:00 (PST-8)
Magnitude: 30.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a tree blocking the northbound lane at the intersection of N. Lake Rd. and E. Cardella Rd.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 18:21:00 to 21-AUG-23 00:21:00 (PST-8)
Location: TUPMAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported the intersection of SR 43 and Panama Lane was completely flooded.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 18:24:00 to 21-AUG-23 00:24:00 (PST-8)
Location: CLARAVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported the roadway was completely flooded at the intersection of Piute Mountain Rd. and Kelso Valley Rd.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 20:55:00 to 21-AUG-23 02:55:00 (PST-8)
Location: GRAPE VINE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported portions of southbound Interstate 5 from the Grapevine scales to Lebec were completely flooded.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 21:00:00 to 21-AUG-23 03:00:00 (PST-8)
Location: LEBEC
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a rock slide on southbound Interstate 5 just south of Fort Tejon Rd.

Flood in KERN, CALIFORNIA
From 20-AUG-23 23:21:00 to 21-AUG-23 03:21:00 (PST-8)
Location: GRAPE VINE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding on southbound Interstate 5 between the scales and Grapevine Rd.

Flash Flood in KERN, CALIFORNIA
From 21-AUG-23 00:42:00 to 21-AUG-23 06:42:00 (PST-8)
Location: CANTIL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported several stuck vehicles on Neuralia Rd. near Cantil Rd. with a road closure in place.

Flood in KERN, CALIFORNIA
From 19-AUG-23 17:01:00 to 19-AUG-23 17:01:00 (PST-8)
Location: DELANO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported standing water on SR 99 under the overpasses of Cecil Ave. and Garces Hwy. in Delano.

Thunderstorm Wind in FRESNO, CALIFORNIA
From 19-AUG-23 17:12:00 to 19-AUG-23 17:12:00 (PST-8)
Location: LOCANS
Magnitude: 35.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a large tree branch on the roadway near the intersection of S. Armstrong Ave. and E. Butler Ave.

Flood in MERCED, CALIFORNIA
From 21-AUG-23 12:41:00 to 21-AUG-23 15:41:00 (PST-8)
Location: LOS BANOS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding on Interstate 5 9S Los Banos north of the SR 165 exchange.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 06:17:00 to 21-AUG-23 11:00:00 (PST-8)
Location: MONOLITH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported Cameron Canyon Rd was closed between Tehachapi Willow Springs Rd. and SR 58 due to heavy debris covering the road.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 11:02:00 to 20-AUG-23 14:02:00 (PST-8)
Location: LEBEC
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported several large rocks washed up on the Frazier Mountain Park onramp onto Interstate 5.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 11:56:00 to 20-AUG-23 14:56:00 (PST-8)
Location: GRAPE VINE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a large rock washed up on northbound Interstate 5 just south of the east escape ramp.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 15:45:00 to 21-AUG-23 11:00:00 (PST-8)
Location: TEHACHAPI MTN VLY AP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Kern County Emergency Manager reported the SR 58 was closed between Tehachapi  Willow Springs Rd. and Sand Canyon Rd. due to heavy flooding.

Flood in KERN, CALIFORNIA
From 20-AUG-23 14:13:00 to 20-AUG-23 17:13:00 (PST-8)
Location: METTLER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding at northbound SR 99 and SR 166 just south of Mettler.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 18:32:00 to 21-AUG-23 00:32:00 (PST-8)
Location: METTLER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported the northbound lanes of SR 99 were completely flooded at the intersection of SR 99 and SR 166.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 21:11:00 to 21-AUG-23 03:11:00 (PST-8)
Location: EDISON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported all lanes on SR 178 were blocked by heavy flooding entering the mouth of Kern Canyon.

Flash Flood in KERN, CALIFORNIA
From 20-AUG-23 21:46:00 to 21-AUG-23 03:46:00 (PST-8)
Location: EDISON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Kern County officials reported a closure of Edison Hwy. from Bena Rd. to Towerline Rd. due to heavy flooding.