2010: Powerful thunderstorms hit Forest Falls and Hemet with heavy rain and flash
floods.
0.5" of rain fell in 8 minutes on Yucaipa Ridge.
Strong thunderstorm winds estimated at 60 mph struck Lake Elsinore.
Power poles were knocked down, trampolines were thrown.
Live power lines trapped a bus full of people.
0.5" of rain fell in 8 minutes on Yucaipa Ridge.
Strong thunderstorm winds estimated at 60 mph struck Lake Elsinore.
Power poles were knocked down, trampolines were thrown.
Live power lines trapped a bus full of people.
2010: A strong high pressure ridge allowed temperatures to rise to warmest values for
the entire summer thus far; record maximum temperatures were either tied or broken for this date
at all five ASOS locations.
2008: A severe thunderstorm developed over Baja California and produced damaging microbursts as it moved north over Campo.
Measured wind speeds were 52 mph, but estimated winds were at least 58 mph.
Trees were downed in Campo.
Nickel sized hail fell from a severe thunderstorm just northwest of Ranchita.
2003: Monsoonal moisture produced thunderstorms late on the 25th that produced over an inch of rain in some areas, including the Valley.
1.68" fell at Cottonwood Creek in the Sierra and 1.48" fell at Lost Hills (Kern Co.) in the (Central) Valley.
Roads were closed in parts of Sequoia National Park and in the Kern Plateau.
2003: Thunderstorms developed in the mountains each day starting on this day and ending on 8.27.
Flooding closed Hwy. 38 in Big Bear City, roads near Guatay, routes S2 and S22 near Ranchita, Hwy. 78 east of Julian (from rock slides and mud slides) and streets in Borrego Springs and Campo.
0.75" hail fell at Big Bear City.
2000: A funnel cloud came within 200 feet of the ground in Jacumba (San Diego Co.).
1993: Rain and thunderstorms developed from the remnants of Hurricane Hilary on this day and ended on 8.26.
3"-4" of rain fell in two hours from heavy thunderstorms in the San Bernardino Mountains, Morongo Valley, and Desert Hot Springs.
Flash flooding occurred in Yucaipa and Morongo Valley.
1988: Monterey had a high temperature of 87° F.
1965: It was 29° F in Big Bear Lake, the lowest temperature on record for August.
1959: High winds from a thunderstorm toppled a concrete block building under construction and tore the roofs of buildings in Henderson, NV.
1949: Stretch of 21 days in a row with below average temperatures in Fresno comes to an end.
1935: A tropical cyclone tracked northward across southern and central Baja California.
The remnants spread into Arizona generating rainfall of up to 2" in the southern valleys, mountains, and deserts.
1924: The high temperature at Reno, NV was 99° F.
Source: NWS San Francisco/Monterey, Hanford, Reno, Las Vegas, & San Diego
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