Surface high pressure situated over the Great Basin brought strong north winds to Southern California on January 29th and 30th, then strong east to northeast winds on the 31st. High winds impacted the San Bernardino Mountains first with strong north winds gusting to 65 mph on the 29th and 30th. Strong winds impacted more than just the usual mountain passes and canyons; strong winds reached the Inland Empire, resulting in significant impacts. Many trees were downed on homes and cars, and one home caught fire when a tree went down on it.

High Wind in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 30-JAN-20 23:00:00 to 31-JAN-20 00:00:00 (PST-8)
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Sill Hill reported a peak wind gust of 70 knots at 2340 PST on 1/31.

High Wind in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 31-JAN-20 03:00:00 to 31-JAN-20 04:00:00 (PST-8)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Boulder Creek reported a peak wind gust of 57 knots at 0350 PST 1/31.

High Wind in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 29-JAN-20 14:00:00 to 29-JAN-20 15:00:00 (PST-8)
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Devil Canyon reported a peak wind gust of 60 knots around 1500 PST on 1/29.

Strong Wind in SAN DIEGO COUNTY COASTAL AREAS, CALIFORNIA
From 29-JAN-20 13:00:00 to 29-JAN-20 15:00:00 (PST-8)
Magnitude: 39.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Coast Guard

Coast Guard reported 7.5 ft swells with 40+ knot gusts not allowing for a small boat launch for search and rescue effort in Oceanside Harbor.

High Wind in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 29-JAN-20 15:00:00 to 29-JAN-20 16:00:00 (PST-8)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Two large trees were downed just southwest of Grand Terrace around 1550 PST on 1/29. Wind gusts were approximately 50 knots at the time.

High Wind in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 29-JAN-20 17:00:00 to 29-JAN-20 18:00:00 (PST-8)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heaps Peak reported a peak wind gust of 55 knots around 1715 PST on 1/29.

High Wind in SANTA ANA MOUNTAINS AND FOOTHILLS, CALIFORNIA
From 29-JAN-20 16:00:00 to 29-JAN-20 17:00:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Bell Canyon RAWS reported a peak wind gust of 53 knots at 1650 PST on 1/29.

High Wind in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 29-JAN-20 15:00:00 to 29-JAN-20 16:00:00 (PST-8)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Lake Mathews reported a peak wind gust of 54 knots at 1515 PST on 1/29.

High Wind in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 29-JAN-20 11:00:00 to 29-JAN-20 12:00:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Ontario Airport ASOS reported a peak wind gust of 53 knots around 1130 PST on 1/29.

Strong Wind in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 29-JAN-20 10:00:00 to 29-JAN-20 11:00:00 (PST-8)
Magnitude: 35.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A large tree fell and crushed a parked car on the 7100 block of Orchard Street in Riverside. Wind gusts at nearby Riverside Airport were around 35-40 mph at the time. Wind gusts at Box Springs SCE site on a ridge just to the east were 57 mph at 1030 PST and 62 mph at 1200 PST. Photos shared by Riverside Fire Department. No injuries reported.

Strong Wind in RIVERSIDE COUNTY MOUNTAINS, CALIFORNIA
From 29-JAN-20 14:00:00 to 29-JAN-20 15:00:00 (PST-8)
Magnitude: 30.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A large tree pine tree fell on a home in Pine Cove (near Idyllwild), damaging the roof around 1530 PST on 1/29. Wind gusts reported by the nearby Marion Ridge SCE station were around 30 knots at the time.

Strong Wind in SAN DIEGO COUNTY COASTAL AREAS, CALIFORNIA
From 29-JAN-20 13:00:00 to 29-JAN-20 14:00:00 (PST-8)
Magnitude: 30.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree blown down by strong winds at Forrestal drive and Santa Margarita road around 1300 PST on 1/29, taking out primary power lines which fell across the road. Winds estimated to be around 30 knots at the time.

High Wind in SANTA ANA MOUNTAINS AND FOOTHILLS, CALIFORNIA
From 29-JAN-20 13:00:00 to 29-JAN-20 14:00:00 (PST-8)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Fremont Canyon reported a peak wind gust of 56 knots around 1350 PST on 1/29.

Strong Wind in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 29-JAN-20 15:00:00 to 29-JAN-20 16:00:00 (PST-8)
Magnitude: 35.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A 75-foot tree fell on a home and the home caught fire not long after around 1500 PST on 1/29. This was on Newell Street just west of Box Springs. Box Springs SCE site reported northeast wind gust to 58 mph at the time. Nearby but further west at Riverside Airport and a home weather station reached 40 mph.

Strong Wind in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 29-JAN-20 18:00:00 to 29-JAN-20 19:00:00 (PST-8)
Magnitude: 39.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Trees uprooted or snapped and roof damage in Rancho Cucamonga around 1830 PST on 1/29. Winds were gusting to around 45 mph at the time of the report.