Surface high pressure over the Great Basin brought gusty cold Santa Ana winds to Southern California. Gusty winds occurred mainly on the 3rd and 4th, with peak gusts around 70-75 mph in the wind prone locations (passes, mountains, canyons). The dry air mass brought extreme radiational cooling to the valleys and High Desert each night. Temperatures dipped down into the mid 30s along the coast, the mid 20s to mid 30s for the valleys, and into the teens and low 20s in the High Desert.

High Wind in SAN GORGONIO PASS NEAR BANNING, CALIFORNIA
From 02-FEB-20 22:00:00 to 02-FEB-20 23:00:00 (PST-8)
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Whitewater RAWS reported a peak wind gust of 62 knots between 2200 and 2300 PST on February 2nd.

High Wind in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 03-FEB-20 00:00:00 to 03-FEB-20 01:00:00 (PST-8)
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Volcan mountain reported a peak wind gust of 63 knots between 0000 and 0100 PST on February 3rd.

High Wind in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 03-FEB-20 00:00:00 to 03-FEB-20 01:00:00 (PST-8)
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Harrison Park reported a peak wind gust of 63 knots between 0000 and 0100 PST on February 3rd.

High Wind in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 03-FEB-20 05:00:00 to 03-FEB-20 06:00:00 (PST-8)
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

CSU San Bernardino reported a peak wind gust of 64 knots between 0500 and 0600 PST on February 3rd.

High Wind in SANTA ANA MOUNTAINS AND FOOTHILLS, CALIFORNIA
From 04-FEB-20 00:00:00 to 04-FEB-20 01:00:00 (PST-8)
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Upper bell canyon reported a peak wind gust of 60 knots between 0000 and 0100 on February 4th.

High Wind in SANTA ANA MOUNTAINS AND FOOTHILLS, CALIFORNIA
From 04-FEB-20 08:00:00 to 04-FEB-20 09:00:00 (PST-8)
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Pleasants Peak reported a peak wind gust of 59 knots at 0800 PST on February 4th.

High Wind in SANTA ANA MOUNTAINS AND FOOTHILLS, CALIFORNIA
From 04-FEB-20 10:00:00 to 04-FEB-20 11:00:00 (PST-8)
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Fremont Canyon had a peak wind gust of 68 knots at 1100 PST on February 4th.

Frost/Freeze in APPLE AND LUCERNE VALLEYS, CALIFORNIA
From 04-FEB-20 22:00:00 to 05-FEB-20 10:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Freezing temperatures occurred in the High Desert overnight on February 4th and into the morning hours on February 5th. Low temperatures ranged from 17 degrees to 28 degrees.

Frost/Freeze in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 04-FEB-20 22:00:00 to 05-FEB-20 10:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Inland Empire experienced below freezing temperatures overnight on the 4th into the morning of the 5th. Low temperatures ranged from 30 to 40 degrees.

Frost/Freeze in SAN DIEGO COUNTY VALLEYS, CALIFORNIA
From 04-FEB-20 22:00:00 to 05-FEB-20 10:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The San Diego valleys experienced below freezing temperatures overnight on February 4th into the morning on February 5th. Low temperatures ranged from 20 to 30 degrees.