2012: An upper-level low, coupled with outflow from storms in Arizona resulted in banded showers with embedded thunderstorms over Southern California.
Imperial County and the San Diego County Deserts reported the most intense activity, with marble-to nickel-size hail near Ocotillo Wells.
2012: A significant flash flood took place in Lake Havasu City, Arizona during the evening hours.
A total of 9 swiftwater rescues took place.
One man was killed after he was swept away from a vehicle that was stuck in floodwaters.
A few homes had water damage.
The storm also knocked down power poles and damaged roads as well as sidewalks.
2004: The Mataguay Fire started on this day just east of Lake Henshaw. It scorched 8,867 acres and cost $1.8 million to fight.
2002: Winds up to 80 mph swept through Kingman, AZ (Mohave Co.), damaging or destroying dozens of homes.
Four people were also injured from flying debris.
In Chloride, AZ (Mohave Co.), winds were estimated at 100 mph which caused significant damage, uprooting trees and knocking out power.
1999: Heavy thunderstorms hit the higher mountains each day starting on 7.11 and ending on this day.
Rainfall rates included 1.65" in less than 30 minutes at Lake Henshaw, 1.57" in 20 minutes at Big Bear City, 1.4" in 30 minutes at Sugarloaf, 1.6" in 85 minutes at Forest Falls, one inch in one hour at Pine Cove, one inch in 25 minutes at Shelter Valley. 1" per hour rain rate occurred at Phelan.
1.8" fell in 25 minutes and hail 0.75" fell at Forest Falls again on this day.
2 were killed and dozens were injured.
6 homes were destroyed and many more were damaged.
A 25 ft. high wall of water moving at 45 mph moved 70-ton boulders at Forest Falls.
Buildings washed away at Jenks Lake.
Disastrous flooding and mud slides occurred at Oak Glen, Big Bear City, and Apple Valley.
Flooding hit the Yucca Valley area, Beaumont area and Palm Springs.
Roadways were closed due to flash flooding.
1995: Heavy rain associated with strong thunderstorms in the Valley Vista area of Mohave County, AZ lead to street and highway flooding.
Water was reported running over a bridge (on Route 66) in Hackberry at 1430 MST, and water three feet deep was on a highway five miles southeast of Hackberry.
A small tornado was reported to have briefly touched down over open country south of Hackberry and Valentine between 1430 and 1445 MST.
1992: For the second day in a row, flash flooding was reported in Death Valley.
This time the Furnace Creek area was the hardest hit.
1990: Thunderstorms dumped 2-3" of rain on the Sierra.
Roads were washed out at Kaiser Pass, Tioga Pass and Yosemite National Park.
One man died on Mount Whitney after being struck by lightning.
1990: Flash flooding struck Valley of Fire State Park (near Las Vegas, NV) with 2-3 feet of water flowing over roads.
1972: The all-time high temperature record of 113° F was set at Ben Lomond.
1967: Thunderstorms hit the high desert and parts of the San Bernardino Mountains. 0.29" fell in Victorville.
Flash floods filled streets in Victorville and the Oro Grande Wash overflowed, flooding at least two homes.
A debris flow resulted on Highway 38 in Barton Flats.
Strong thunderstorm winds knocked down telephone and power poles in the high desert.
1927: The low temperature was 44° F in Riverside, the lowest temperature on record for July.
1911: Heavy rain caused flash flooding and landslides in the eastern Sierra and western Nevada.
Source: NWS San Francisco/Monterey, Hanford, Reno, Las Vegas, & San Diego
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