2007: Severe thunderstorms struck from Lake Henshaw to Oak Grove.
Severe winds broke off large oak branches, damaging vehicles.
Debris on the highway caused an accident.
A heavy thunderstorm hit Wrightwood and produced a debris flow that damaged roads along Sheep Creek, and inundated the bridge at Heath Creek.
This was the second of three consecutive days (also 8.31 and 9.2) of flash flooding in Wrightwood.
A heat wave began on this day, with a monsoon flavor.
Temperatures exceeded 95° F in the coasts and the mountains, 105° F in the valleys, 110° F in the Inland Empire and high deserts, and 115° F in the lower deserts.
At least six deaths from heat related illnesses.
2007: An EF0 tornado touched down about three miles southwest of Rosamond during a late afternoon thunderstorm.
It then proceeded northwards through Rosamond before dissipating about three miles southeast of Mojave and skipped along a path of about 12 miles.
In Rosamond the tornado toppled several fences, blew over numerous utility poles, downed some tree branches and caused some damage to mobile homes.
2002: A tropical heat wave sent temperatures soaring to 118° F in Dulzura, 113° F in Temecula, and 112° F in Riverside and Menifee.
Temperature gradients were remarkable near the coast.
It was 77° F in Newport Beach and 107° F in Santa Ana (only ten miles difference), 72° F in Oceanside Harbor and 87° F in Oceanside Airport (only two miles difference), 81° F in Sea World to 91° F in San Diego - Lindbergh Field (only three miles difference).
2000: Early morning thunderstorms brought 0.32" of rain to Fresno, setting a daily rainfall record.
Clovis recorded 0.65".
The rain caused damage to raisin crops in Fresno County and one person was injured in Northwest Fresno after being struck by lightning.
1997: Strong thunderstorms that developed on this day and again on 9.2 produced three wind gusts of 104 mph at Twentynine Palms.
Apple Valley received a gust of 62 mph.
A large tree was blown down in Apple Valley.
1987: Remnants of tropical storm Lidia brought thunderstorms to the San Diego valleys with lightning and strong damaging winds (possibly a tornado).
Lightning struck a power pole in El Cajon, which ruptured gas lines.
Another bolt started a house fire there.
Lightning caused several small fires in the area.
What was reported as a dust devil was probably a microburst or a tornado that damaged awnings and other items to mobile homes near Lake Jennings.
In El Cajon a tree with an 8" trunk was snapped in half.
35 mph winds were reported at Pt. Loma.
It was also a very hot day with the tropical air mass: It was 109° F at the Wild Animal Park, 106° F in El Cajon, 105° F in Escondido and Santee, 99° F at SDSU, 89° F in National City and 83° F in San Diego.
1972: Hurricane Hyacinth moved as far west as 125 West before recurving to the northeast.
The remnants made landfall between Los Angeles and San Diego on 9.3 with winds of 25 mph and rainfall of up to 1" in the mountains from 8.29 to 9.6.
This tropical cyclone holds the distinction of traveling the farthest west before recurving and making landfall in Southern California.
This occurred during the El Niño of 1972-73.
Only 0.44" was measured in San Diego.
1967: Hurricane Katrina comes up the Gulf of California and comes ashore south of Yuma.
Over 2" of rain fall in southwest Arizona with lesser amounts elsewhere.
1960: A noon thunderstorm hit the Barstow area.
Flash floods damaged highways around Lenwood.
Mud and debris were deposited on Barstow streets.
1955: Pinnacles National Monument had a high of 113° F.
1955: A prolonged heat wave started on this day and ended on 9.7.
It was 110° F in LA on this day, an all time record, and 104° F in San Diego.
1950: It was 121° F in Palm Springs, the highest temperature on record for September.
Source: NWS San Francisco/Monterey, Hanford, Las Vegas, Phoenix, & San Diego
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Severe winds broke off large oak branches, damaging vehicles.
Debris on the highway caused an accident.
A heavy thunderstorm hit Wrightwood and produced a debris flow that damaged roads along Sheep Creek, and inundated the bridge at Heath Creek.
This was the second of three consecutive days (also 8.31 and 9.2) of flash flooding in Wrightwood.
A heat wave began on this day, with a monsoon flavor.
Temperatures exceeded 95° F in the coasts and the mountains, 105° F in the valleys, 110° F in the Inland Empire and high deserts, and 115° F in the lower deserts.
At least six deaths from heat related illnesses.
2007: An EF0 tornado touched down about three miles southwest of Rosamond during a late afternoon thunderstorm.
It then proceeded northwards through Rosamond before dissipating about three miles southeast of Mojave and skipped along a path of about 12 miles.
In Rosamond the tornado toppled several fences, blew over numerous utility poles, downed some tree branches and caused some damage to mobile homes.
2002: A tropical heat wave sent temperatures soaring to 118° F in Dulzura, 113° F in Temecula, and 112° F in Riverside and Menifee.
Temperature gradients were remarkable near the coast.
It was 77° F in Newport Beach and 107° F in Santa Ana (only ten miles difference), 72° F in Oceanside Harbor and 87° F in Oceanside Airport (only two miles difference), 81° F in Sea World to 91° F in San Diego - Lindbergh Field (only three miles difference).
2000: Early morning thunderstorms brought 0.32" of rain to Fresno, setting a daily rainfall record.
Clovis recorded 0.65".
The rain caused damage to raisin crops in Fresno County and one person was injured in Northwest Fresno after being struck by lightning.
1997: Strong thunderstorms that developed on this day and again on 9.2 produced three wind gusts of 104 mph at Twentynine Palms.
Apple Valley received a gust of 62 mph.
A large tree was blown down in Apple Valley.
1987: Remnants of tropical storm Lidia brought thunderstorms to the San Diego valleys with lightning and strong damaging winds (possibly a tornado).
Lightning struck a power pole in El Cajon, which ruptured gas lines.
Another bolt started a house fire there.
Lightning caused several small fires in the area.
What was reported as a dust devil was probably a microburst or a tornado that damaged awnings and other items to mobile homes near Lake Jennings.
In El Cajon a tree with an 8" trunk was snapped in half.
35 mph winds were reported at Pt. Loma.
It was also a very hot day with the tropical air mass: It was 109° F at the Wild Animal Park, 106° F in El Cajon, 105° F in Escondido and Santee, 99° F at SDSU, 89° F in National City and 83° F in San Diego.
1972: Hurricane Hyacinth moved as far west as 125 West before recurving to the northeast.
The remnants made landfall between Los Angeles and San Diego on 9.3 with winds of 25 mph and rainfall of up to 1" in the mountains from 8.29 to 9.6.
This tropical cyclone holds the distinction of traveling the farthest west before recurving and making landfall in Southern California.
This occurred during the El Niño of 1972-73.
Only 0.44" was measured in San Diego.
1967: Hurricane Katrina comes up the Gulf of California and comes ashore south of Yuma.
Over 2" of rain fall in southwest Arizona with lesser amounts elsewhere.
1960: A noon thunderstorm hit the Barstow area.
Flash floods damaged highways around Lenwood.
Mud and debris were deposited on Barstow streets.
1955: Pinnacles National Monument had a high of 113° F.
1955: A prolonged heat wave started on this day and ended on 9.7.
It was 110° F in LA on this day, an all time record, and 104° F in San Diego.
1950: September Swelter: The record high in Las Vegas for the month is set, 113° F.
1950: It was 121° F in Palm Springs, the highest temperature on record for September.
Source: NWS San Francisco/Monterey, Hanford, Las Vegas, Phoenix, & San Diego
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