A deep trough of low pressure from the northwest moved through southern California, bringing minor cooling, gusty, light to moderate precipitation along and west of the mountains and damaging west winds to the mountains and deserts. West winds were sustained 30-50 mph with gusts up to 80-90 mph. Damage to trees and structures, as well as blowing dust and sand, was reported in the Borrego Springs and Palm Springs areas. A big rig was also blown over along Interstate 10 in Palm Springs. Rainfall totals for the southwest and west slopes of the San Bernardino County mountains were also significant for this event. Amounts from one-quarter of an inch up to 1.5 inches were recorded.

High Wind in SAN DIEGO COUNTY DESERTS, CALIFORNIA
From 08-APR-13 07:00:00 to 08-APR-13 11:00:00 (PST-8)
Magnitude: 63.00 MG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds began at the Borrego Springs around 0700 PST on the 8th and ended around 1100 PST that morning. During this time, there were periods of high winds and lull periods. A peak gust of 73 mph was measured around 0840 PST. A spotter reported sustained winds of 53 mph with a gust to 83 mph around 1000 PST. This gust was blamed for downing the major power line running through the town. Several branches were also downed, with at least one road blocked. Another spotter reported a downed power pole and trees, as well as shingles blown off a roof, damaging a car. Visibility reported 2 miles in blowing dust for a time. Blowing sand pitted several vehicle windshields in the area as well, causing some windows to shatter. Significant damage was reported at the Anza-Borrego State Park, with Ranger HQ parking structures damaged, along with three Mongolian ger tents used by campers and 800 square feet of roof from the Stout Paleontology Laboratory.

High Wind in SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE, CALIFORNIA
From 09-APR-13 13:00:00 to 09-APR-13 14:00:00 (PST-8)
Magnitude: 50.00 MG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Mesonet

A mesonet in Anza recorded a 1 minute gust to 58 mph at 1320 PST on the 9th, corresponding to a reported strong dust devil that tracked through a mobile home park in Jurupa Valley, near Riverside, damaging carports, several metal awnings and roofs. At least 6 metal awnings were lifted high in the air, some weighing over 100 pounds. No injuries were reported despite the flying debris. Skies were clear at the time.

High Wind in COACHELLA VALLEY, CALIFORNIA
From 08-APR-13 03:30:00 to 08-APR-13 15:00:00 (PST-8)
Magnitude: 70.00 MG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds began at the Sky Valley mesonet between 0343 and 0443 PST on the 8th and ended between 1343 and 1443 the same day. During this time, two periods of high winds were observed with a brief lull between. During those high wind periods, peak gusts of 68 and 80 mph were observed, the latter being around 0600 PST. California Highway Patrol reported an overturned big rig along Interstate 10 near Date Palm Drive. There were no injuries, but the number 3 and 4 eastbound lanes were closed for about two hours for the investigation. The Palm Springs airport reported a loss of utility power during this time as well, attributing it to the high winds nearby. A power pole was also downed by winds near Whitewater Wash and Vista Chino in Palm Springs, along with several downed palm trees across the valley. Vista Chino road was closed for a time while crews fixed the pole.

High Wind in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 08-APR-13 10:00:00 to 08-APR-13 16:30:00 (PST-8)
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds began at the Volcan Mountain mesonet between 0900 and 0910 PST on the 8th and ended between 1500 and 1510 PST the same day. During this time, winds mostly gusted over 60 mph with a peak gust of 72 mph measured between 1200 and 1210 PST.
Between 1200 and 1400 PST, the Harrison Park mesonet also recorded several gusts to 58 mph and a peak gust of 59 mph.

High Wind in SAN DIEGO COUNTY DESERTS, CALIFORNIA
From 08-APR-13 07:00:00 to 08-APR-13 10:00:00 (PST-8)
Magnitude: 63.00 MG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Mesonet

High winds began at the Ocotillo Wells mesonet around 0700 PST on the 8th and ended around 1000 PST that morning. During this time, several gusts over 60 mph were recorded, including the peak gust of 73 mph, measured between 0815 and 0820 PST. A spotter in the area reported trees down with damage to a few buildings. Power outages also reported from residents at the Desert Ironwoods Resort.

High Wind in APPLE AND LUCERNE VALLEYS, CALIFORNIA
From 08-APR-13 08:00:00 to 08-APR-13 10:00:00 (PST-8)
Magnitude: 76.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A COOP observer in Johnson Valley reported sustained winds 32-42 mph with gusts as high as 87 mph.