A major surge of monsoon moisture brought an outbreak of thunderstorms to the Mojave Desert and southern Great Basin, with the most activity on the 3rd and 4th. Widespread flash flooding and severe weather occurred.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 03-AUG-14 19:49:00 to 03-AUG-14 21:30:00 (PST-8)
Location: LENWOOD
Flood cause: Heavy Rain
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One to two feet of water flowed through streets in southwest Barstow. At least five swift water rescues took place, three homes were flooded with water and mud, and a 20-inch sewer line was ruptured. Lenwood Road was washed out in sections between National Trails Highway and the I-15 on ramp, with one vehicle stuck. The intersection of Calico Blvd. and Ghost Town Road was also flooded with a vehicle stuck. Minneola Road was closed from Mitchells Ranch to Valley Center. A two-vehicle crash occurred during the heavy rain, injuring two people (indirect).

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 03-AUG-14 20:46:00 to 03-AUG-14 22:00:00 (PST-8)
Location: FOUR CORNERS
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The intersection of Highways 58 and 395 was fully flooded.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 03-AUG-14 21:01:00 to 03-AUG-14 22:00:00 (PST-8)
Location: FOUR CORNERS
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 395 was flooded near San Bernardino County mile marker 32.

Flash Flood in INYO, CALIFORNIA
From 04-AUG-14 11:25:00 to 04-AUG-14 13:00:00 (PST-8)
Location: DEATH VLY JCT
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

A foot of water and debris flowed over Highway 190 at State Line Road just outside Death Valley National Park. The water also burst into the historic Amargosa Opera House, warping the original wood floors in the 91 year old building.

Flash Flood in INYO, CALIFORNIA
From 04-AUG-14 20:00:00 to 04-AUG-14 21:00:00 (PST-8)
Location: SCOTTYS CASTLE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Ubehebe Crater Road was closed at the junction with Scotty's Castle Road due to flood damage.

Dust Storm in WESTERN MOJAVE DESERT, CALIFORNIA
From 02-AUG-14 09:18:00 to 02-AUG-14 10:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Dust storm conditions on Interstate 40 near Newberry Springs led to a series of accidents involving seven big rigs and three cars. Nine people were injured (indirect).

Flash Flood in INYO, CALIFORNIA
From 03-AUG-14 09:00:00 to 03-AUG-14 10:00:00 (PST-8)
Location: INDEPENDENCE
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Several inches of water and mud flowed over roads in the Manzanar National Historic Site, closing the auto tour road.

Flash Flood in INYO, CALIFORNIA
From 03-AUG-14 09:43:00 to 03-AUG-14 11:00:00 (PST-8)
Location: LONE PINE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Rocks and debris washed onto sections of Whitney Portal Road from west of Lone Pine all the way to the parking area for the trail.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 03-AUG-14 13:41:00 to 03-AUG-14 17:00:00 (PST-8)
Location: SALTMARSH STATION
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flash flooding along Highway 62 closed the highway, trapping about 400 cars between flooded washed. One swift water rescue occurred.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 03-AUG-14 14:05:00 to 03-AUG-14 16:00:00 (PST-8)
Location: NEEDLES
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Highway 95 flooded in multiple places between Needles and Vidal Junction.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 03-AUG-14 16:00:00 to 03-AUG-14 17:30:00 (PST-8)
Location: BRANT STATION
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Cedar Canyon Road was blocked by a large flow of mud and rocks.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 03-AUG-14 17:00:00 to 03-AUG-14 18:00:00 (PST-8)
Location: SALTUS
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: COOP Observer

Water and mud washed over National Trails Highway near Amboy.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 03-AUG-14 20:30:00 to 03-AUG-14 21:30:00 (PST-8)
Location: LUDLOW
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Rocks and debris flowed over National Trails Highway at Ludlow Road.