After a brief break, another push of monsoon moisture fueled another outbreak of thunderstorms across the Mojave Desert and southern Great Basin. Many storms produced severe weather and flash flooding.

Thunderstorm Wind in CLARK, NEVADA
From 17-JUL-18 21:09:00 to 17-JUL-18 21:09:00 (PST-8)
Location: (LSV)NELLIS AFB LAS
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in CLARK, NEVADA
From 17-JUL-18 21:24:00 to 17-JUL-18 21:24:00 (PST-8)
Location: OVERTON MUNI ARPT
Magnitude: 43.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm winds damaged a power pole, causing a power outage.

Flash Flood in CLARK, NEVADA
From 17-JUL-18 21:50:00 to 17-JUL-18 23:59:00 (PST-8)
Location: LOGANDALE
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Flooding covered several roads with water and debris in and near Logandale and Overton.

Flash Flood in LINCOLN, NEVADA
From 19-JUL-18 16:30:00 to 19-JUL-18 18:00:00 (PST-8)
Location: PRINCE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Highway 320 was closed due to flooding.

Thunderstorm Wind in LINCOLN, NEVADA
From 19-JUL-18 17:13:00 to 19-JUL-18 17:13:00 (PST-8)
Location: URSINE
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Flash Flood in LINCOLN, NEVADA
From 19-JUL-18 17:36:00 to 19-JUL-18 21:00:00 (PST-8)
Location: PIOCHE
Flood cause: Heavy Rain
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Emergency Manager

There was flash flooding in the Pioche and Panaca areas, including an eight mile stretch of Highway 322 east of Pioche. Highway 93 was starting to wash out near mile marker 113. At Cathedral Gorge State Park, a guardrail was taken out by flood water, and the campground was inundated with four feet of water.

Thunderstorm Wind in CLARK, NEVADA
From 19-JUL-18 19:54:00 to 19-JUL-18 21:00:00 (PST-8)
Location: (LSV)NELLIS AFB LAS
Magnitude: 55.00 MG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Public

The peak measured gust occurred at Nellis AFB. Two large trees and several power poles were blown down, trapping people in vehicles on Boulder Highway. There was also roof damage at a mobile home park. Up to 24,000 people were without power.

Thunderstorm Wind in LINCOLN, NEVADA
From 19-JUL-18 18:16:00 to 19-JUL-18 18:16:00 (PST-8)
Location: ELGIN
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Lightning in CLARK, NEVADA
From 19-JUL-18 20:22:00 to 19-JUL-18 20:22:00 (PST-8)
Location: LAS VEGAS
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Lightning hit a power pole, snapping it in half. The transformer and wires were resting on the ground.

Flash Flood in CLARK, NEVADA
From 19-JUL-18 21:34:00 to 19-JUL-18 23:00:00 (PST-8)
Location: CALLVILLE BAY
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Northshore Road was closed due to flooding.

Thunderstorm Wind in CLARK, NEVADA
From 20-JUL-18 13:55:00 to 20-JUL-18 13:55:00 (PST-8)
Location: ROACH
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Flash Flood in CLARK, NEVADA
From 20-JUL-18 17:58:00 to 20-JUL-18 19:00:00 (PST-8)
Location: LAS VEGAS HNDRSN SKY
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Department of Highways

St. Rose Parkway was flooded at Eastern Avenue.

Thunderstorm Wind in CLARK, NEVADA
From 20-JUL-18 17:58:00 to 20-JUL-18 18:25:00 (PST-8)
Location: LAS VEGAS HNDRSN SKY
Magnitude: 62.00 MG
Property damage: 1.40M
Crop damage: 0.00K
Reported by: Public

Dozens of trees were blown down, at least one of which caused significant damage to a vehicle; at least six power poles and power lines were blown down; there was significant damage to a large shopping center sign; damage to a garage door; and significant damage to the Henderson Pavilion.

Thunderstorm Wind in CLARK, NEVADA
From 21-JUL-18 09:25:00 to 21-JUL-18 09:25:00 (PST-8)
Location: ECHO BAY
Magnitude: 48.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Thunderstorm winds damaged the Echo Bay courtesy dock.
This is the same event in which a total of 23 boats were swamped on Lakes Mead, Mohave, and Havasu. Those are documented in Arizona Storm Data.