An upper level low pressure system brought a round of thunderstorms to the Mojave Desert and southern Great Basin. Significant flash flooding occurred, along with isolated severe weather.

Flash Flood in NYE, NEVADA
From 18-OCT-15 03:45:00 to 18-OCT-15 05:00:00 (PST-8)
Location: PAHRUMP
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Water six to 12 inches deep flowed over Highway 160 at Basin, Highway 372, and Calvada in Pahrump. Mud, rocks, and debris were reported on many roads in town as well.

Flash Flood in NYE, NEVADA
From 18-OCT-15 09:32:00 to 18-OCT-15 11:00:00 (PST-8)
Location: LATHROP WELLS
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 95 was closed between Nye County mile markers 26 and 27 due to flooding.

Hail in LINCOLN, NEVADA
From 18-OCT-15 10:30:00 to 18-OCT-15 10:35:00 (PST-8)
Location: CALIENTE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in LINCOLN, NEVADA
From 18-OCT-15 11:59:00 to 18-OCT-15 13:30:00 (PST-8)
Location: DELMUES
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Water, mud, and debris flowed over Echo Dam Road.

Flash Flood in NYE, NEVADA
From 18-OCT-15 12:30:00 to 18-OCT-15 14:00:00 (PST-8)
Location: BEATTY
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 95 was closed in and near Beatty due to flooding.

Flash Flood in NYE, NEVADA
From 18-OCT-15 13:18:00 to 18-OCT-15 15:00:00 (PST-8)
Location: MERCURY ARPT
Flood cause: Heavy Rain
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 160 was closed one mile south of Highway 95 due to flooding. Two roads in the community of Crystal were also impassable.

Flash Flood in CLARK, NEVADA
From 18-OCT-15 13:29:00 to 18-OCT-15 15:00:00 (PST-8)
Location: BLUE DIAMOND
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Over six inches of rapidly flowing water was reported at the entrance to Spring Mountain Ranch State Park.

Flash Flood in NYE, NEVADA
From 18-OCT-15 13:55:00 to 18-OCT-15 16:00:00 (PST-8)
Location: JOHNNIE
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Bell Vista Road was severely damaged by flooding.

Flash Flood in CLARK, NEVADA
From 18-OCT-15 13:59:00 to 18-OCT-15 16:00:00 (PST-8)
Location: DRY LAKE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 93 was closed due to severe flooding.

Flash Flood in NYE, NEVADA
From 18-OCT-15 14:00:00 to 18-OCT-15 17:00:00 (PST-8)
Location: CLAY CAMP
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Flooding caused extensive damage to roads in the Ash Meadows National Wildlife Refuge.

Flash Flood in LINCOLN, NEVADA
From 18-OCT-15 14:08:00 to 18-OCT-15 16:30:00 (PST-8)
Location: HIKO
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 93 was flooded in numerous locations near Lincoln County mile marker 63, with pavement starting to wash out.

Flash Flood in CLARK, NEVADA
From 18-OCT-15 14:30:00 to 18-OCT-15 16:00:00 (PST-8)
Location: RED ROCK CANYON
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Rocks and debris blocked Scenic Loop Road.

Flash Flood in LINCOLN, NEVADA
From 18-OCT-15 14:40:00 to 18-OCT-15 16:30:00 (PST-8)
Location: ALAMO
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 93 was flooded in several spots between Lincoln County mile markers 38 and 50.

Flash Flood in LINCOLN, NEVADA
From 18-OCT-15 14:40:00 to 18-OCT-15 16:00:00 (PST-8)
Location: HIKO
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 318 was flooded in Hiko.

Hail in CLARK, NEVADA
From 18-OCT-15 15:43:00 to 18-OCT-15 15:48:00 (PST-8)
Location: LOGANDALE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in CLARK, NEVADA
From 18-OCT-15 16:00:00 to 18-OCT-15 18:00:00 (PST-8)
Location: MOUNT CHARLESTON
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Several backcountry roads in the Desert National Wildlife Refuge were flooded and damaged.

Flash Flood in CLARK, NEVADA
From 18-OCT-15 16:45:00 to 18-OCT-15 18:30:00 (PST-8)
Location: CRYSTAL
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Newspaper

Valley of Fire Highway and I-15 Exit 75 were closed due to flooding.

Flash Flood in CLARK, NEVADA
From 18-OCT-15 17:30:00 to 18-OCT-15 20:30:00 (PST-8)
Location: MOAPA
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hidden Valley Road was closed due to 4.5 feet of water flowing over the road.

Flash Flood in CLARK, NEVADA
From 18-OCT-15 18:00:00 to 18-OCT-15 18:25:00 (PST-8)
Location: APEX
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Interstate 15 was closed at mile marker 60 to remove debris from flooding.

Flash Flood in CLARK, NEVADA
From 18-OCT-15 18:30:00 to 18-OCT-15 20:00:00 (PST-8)
Location: LAUGHLIN
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Newspaper

Nevada Telephone Cove Road was closed due to flooding, and damage occurred in the Christmas Tree Pass backcountry area.

Flash Flood in CLARK, NEVADA
From 18-OCT-15 19:16:00 to 18-OCT-15 22:00:00 (PST-8)
Location: MEAD LAKE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three feet of water from Overton Wash flowed over Highway 169.