Low-level moisture from Tropical Storm (formerly Hurricane) Odile streamed northward ahead of the system, underneath a ridge that was in place. The heat and moisture along a coastal sea breeze combined to produce scattered thunderstorms across the coast, beaches and inland valleys. The strongest storms were in the southern Inland Empire foothills just west of Forest Falls and near Lake Elsinore, and from Kearny Mesa to El Cajon. Rainfall totals were highly variable due to the isolated nature of the thunderstorms, but the heaviest cells on the 16th produced amounts up to one-half, to just over one inch of rain in the coast and valley locations of San Diego and Orange Counties. One to two inches of rain was reported near Lake Elsinore. The San Bernardino County mountains saw generally one-third of an inch or less. A particularly strong storm dumped just over an inch of rain, causing flooding along Balboa Avenue, near Scripps Ranch and Kearny Mesa. The winds were strong enough with these thunderstorms to down several power lines and numerous large trees (across roadways and onto vehicles) in the southern San Diego County valleys (near El Cajon and Mission Valley) and southern Riverside County valleys in Wildomar. Storm survey indicated wind speeds of 60 to 65 mph and Montgomery Field measured 56 mph. The City of San Diego reported 30 buildings damaged and the American Red Cross in Kearny Mesa had significant damage including partial roof collapse.  SDGE reported at least 12 storm-related power outages throughout the city, resulting in more than 6000 customers without power. A few thunderstorms were mountain-focused (near Julian) on the 17th as the remnants of Odile were pushed off to the east and the sea breeze boundary moved well inland.  The storms on the 17th were concentrated over the Riverside and northern San Diego County mountains, generating amounts of one-half of an inch or less. Storm surveys were completed in Wildomar and Kearny Mesa into Mission Valley. Riverside County storm damage was reported at nearly 8 million dollars from the September 7-8 and the 16th events.

Thunderstorm Wind in SAN DIEGO, CALIFORNIA
From 16-SEP-14 12:15:00 to 16-SEP-14 12:45:00 (PST-8)
Location: SPRING VLY
Magnitude: 43.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Law Enforcement

CHP reported a tree down blocking the right lane near the intersection of Jamacha Boulevard and Doubletree Road. They also reported a school bus hit by a tree.

Lightning in SAN BERNARDINO, CALIFORNIA
From 16-SEP-14 13:30:00 to 16-SEP-14 14:00:00 (PST-8)
Location: CRESTLINE
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Lightning struck a home near Crestline, resulting in a fire.

Flood in RIVERSIDE, CALIFORNIA
From 16-SEP-14 13:30:00 to 16-SEP-14 14:00:00 (PST-8)
Location: SEDCO HILLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain resulted in 2 inches of flowing water across Bundy Canyon Road and Harvest Way east.

Thunderstorm Wind in RIVERSIDE, CALIFORNIA
From 16-SEP-14 14:00:00 to 16-SEP-14 14:30:00 (PST-8)
Location: SAN JUAN HOT SPGS
Magnitude: 42.00 MG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Mesonet

The El Cariso mesonet station recorded a wind gust of 48 mph from a thunderstorm in the area. Downwind of this station, CHP reported a tree falling onto a power line on Grand Avenue in Lake Elsinore, blocking traffic. Wind damage was also reported at Elsinore High School, with power lines down and some minor flooding.

Thunderstorm Wind in RIVERSIDE, CALIFORNIA
From 16-SEP-14 14:00:00 to 16-SEP-14 14:30:00 (PST-8)
Location: ARCILLA
Magnitude: 43.00 MG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

The Lake Matthews mesonet station reported a gust of 50 mph due to a thunderstorm, which knocked down a tree, blocking all lanes of Glen Ivy Road a few miles north of the mesonet.

Funnel Cloud in SAN BERNARDINO, CALIFORNIA
From 16-SEP-14 15:30:00 to 16-SEP-14 15:45:00 (PST-8)
Location: FAWNSKIN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Multiple public photos show a funnel cloud just north of Big Bear Lake.

Heavy Rain in SAN DIEGO, CALIFORNIA
From 16-SEP-14 15:00:00 to 16-SEP-14 16:00:00 (PST-8)
Location: (MYF)MNTGMRY FLD SAN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Montgomery Field ASOS recorded 0.80 inches of rain in less than one hour. Media reported 6 or more inches of water over a nearby roadway a short time later.

Thunderstorm Wind in SAN DIEGO, CALIFORNIA
From 16-SEP-14 15:30:00 to 16-SEP-14 16:00:00 (PST-8)
Location: (MYF)MNTGMRY FLD SAN
Magnitude: 49.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: ASOS

ASOS reported a gust of 56 mph around 1600 PST. Strong winds around this time flipped multiple small planes at the airfield.

Thunderstorm Wind in SAN DIEGO, CALIFORNIA
From 16-SEP-14 16:00:00 to 16-SEP-14 16:45:00 (PST-8)
Location: SAN DIEGO
Magnitude: 45.00 MG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Mesonet

The Mission Valley mesonet recorded a wind gust of 52 mph due to a thunderstorm. Media reported a tree falling on a car in Mission Valley nearby.

Thunderstorm Wind in SAN DIEGO, CALIFORNIA
From 16-SEP-14 16:00:00 to 16-SEP-14 16:45:00 (PST-8)
Location: MIRAMAR
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple trees down and broken tree limbs throughout the neighborhood in Tierrasanta. Widespread minor damage to patio furniture, pop-up tents, and trampolines.

Lightning in SAN DIEGO, CALIFORNIA
From 16-SEP-14 17:00:00 to 16-SEP-14 17:30:00 (PST-8)
Location: SAN DIEGO
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Two palm trees caught fire after a lightning strike.

Thunderstorm Wind in SAN DIEGO, CALIFORNIA
From 16-SEP-14 12:00:00 to 16-SEP-14 12:30:00 (PST-8)
Location: EL CAJON
Magnitude: 48.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Several trees and a light pole fell on two parked trucks in a shopping center near the intersection of Calle Verde and Avocado Blvd in La Mesa. The tree also damaged the awnings and door of the McDonalds.

Thunderstorm Wind in RIVERSIDE, CALIFORNIA
From 16-SEP-14 13:00:00 to 16-SEP-14 13:30:00 (PST-8)
Location: MURRIETA
Magnitude: 43.00 MG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter in Murrieta reported 50 mph winds with a wooden fence blown down and lawn furniture thrown across the yard.