2013: Thunderstorms erupted across the mountains and deserts on this day.
Radar estimated 2"-4" of rainfall in one hour for some of the storms.
The newly vulnerable burn scar of the Mountain fire got brief heavy rain that produced a flash flood and a debris flow called an "ash flow."
One of these flowed into a pond, displaced the water, and killed the resident fish.
Several other desert roads near Sky Valley, Mecca, and Borrego Springs were rendered
Several other desert roads near Sky Valley, Mecca, and Borrego Springs were rendered
impassable from the water and debris.
In Big Bear City, some of these floodwaters entered a few homes.
In remote Anza Borrego Desert State Park, three vehicles were washed downstream.
In Big Bear City, some of these floodwaters entered a few homes.
In remote Anza Borrego Desert State Park, three vehicles were washed downstream.
2008: A rare widespread severe weather outbreak occurred in western Nevada.
Supercell thunderstorms caused damage across the area with reports of large hail and strong winds.
2006: Concord had a high temperature of 106° F.
2003: The high temperature at Hawthorne, NV, (western Nevada) was 105° F.
1999: Heavy thunderstorms hit the Borrego Springs area causing flash flood damage at Borrego Springs and Ocotillo Wells.
A tornado hit Shelter Valley causing property damage.
1998: Strong thunderstorms hit the Las Vegas valley producing 0.75" - 1.50" of rain.
Serious flooding occurred at Desert Inn and Durango Road and 3 people became trapped by flood water had to be rescued.
1997: A small tornado developed east of Palmdale.
The tornado was rated an F0, and caused minimal damage.
1987: A rare cold air mass for mid-summer descended on the region starting on 7.18 and ending on this day and broke numerous low temperature records.
It was 39° F in Palomar Mountain, the lowest temperature on record for July.
This also occurred three days previous on 7.18 and the previous day on 7.20.
1986: Very heavy rains and water rushing off the Dome Rock Mountains breached a retaining wall near a mobile home park in Ehrenberg, AZ.
7 mobile homes, some with residents inside, were swept into the Colorado River.
Portions of Interstate 10 were washed away as up to 3 feet of water covered the roadway.
55 vehicles were damaged.
1986: A weak tornado (F0) touched down on a sparse hillside ten miles south of Barstow.
It was on the ground for approximately three minutes and traveled about 150 yards.
No damage was reported.
1985: Bridgeport (Mono Co.) recorded 1.17" of precipitation.
1984: Thunderstorms caused very heavy rain to occur in the Greater Phoenix and Yuma, AZ, areas, as well as across Mojave county, AZ (northwest corner of state).
Major flash flooding was reported in numerous locations and the Governor of Arizona declared Mojave and Yuma Counties a disaster area.
1965: It was 32° F in Big Bear Lake, the latest freezing temperature for the season on record.
1952: A M7.3 earthquake centered along the Bear Mountain Fault occurred.
The quake caused millions of dollars in damage in Kern County, and causing the worst damage in Arvin and Tehachapi, where 9 people were killed.
1938: A major dust and rain storm affected Yuma, AZ.
Numerous trees are uprooted and city-wide curb to curb flooding is reported.
1902: A dying tropical cyclone brought two inches of rain to the mountains and deserts of Southern California during a very strong El Niño event of 1901-02.
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