[californiadisasters] On This Date In CA Weather History (September 25)

On This Date In California Weather History....

1997: Heavy rain and thunderstorms developed on 9.24 and ended on 9.26.
Moisture came from the remnants of Hurricane Nora, which had moved up the Gulf of California and weakened over Yuma, AZ, giving that city more rainfall in three hours than what normally occurs over the entire season.
Rainfall totals were 5.50 inches in Mt. San Jacinto, 4.70 inches in Mt. Laguna, 4.41 inches in Mt. San Gorgonio, three to four inches at several other locations in mountains, 3.07 inches in Twentynine Palms, 1.5 to two inches at Coachella and Borrego Valleys, 2.88 inches at Hemet, and one to two inches in many inland areas.
1.72 inches fell in Escondido, the greatest daily amount on record for September.
Flooding occurred in Palm Springs, Borrego Springs and Spring Valley.
Traffic deaths also were a result.
The hurricane produced waves of more than 20 feet at Seal Beach and caused tidal flooding over a 14 block stretch on this day and on 9.26.

1997: Tropical Storm Nora moved across the lower deserts of California bringing rain as far north as the Central San Joaquin Valley.
Storm totals included 1.49" at China Lake Naval Air Station, 1.32" at Inyokern, 0.77" at Mojave, 0.45" at Tehachapi, 0.05" at Bakersfield and 0.02" at Fresno.
Nora is only the second storm on record since 1900 to cross the state boundary of California while classified as a tropical storm.

1989: It was 100° in San Diego, the last time San Diego has hit 100°.

1986: Unseasonable rainfall hit the region on 9.24 and on this day: 1.04 inches fell in San Diego, 5.14 inches in Palomar Mountain, 2.07 inches in Julian, 1.88 inches in Mt. Laguna, 1.61 inches in Lemon Grove, 1.58 inches in Pt. Loma, 1.57 inches in Vista, and 1.47 inches at SDSU.
Flooding occurred in low roadways in Mission Valley.

1982: The remnants of Tropical Storm Olivia brought rain to the San Joaquin Valley from September 23rd through 27th.
Measurable rain fell from the 24th through 26th at both Fresno and Bakersfield.
Storm totals included 0.70" at Bakersfield and 1.10" at Fresno, though locally heavier amounts were reported.
The raisin crop was totally damaged due to mold and mildew and significant damage occurred to the almond crop.
The rain also caused power outages to over 10,000 customers in Fresno County and washed out part of Highway 180 near Boyden Bridge.

1982: The remnants of Hurricane Olivia recurved northeastward across Southern California with rainfall up to four inches in the mountains starting on 9.24 and ending on 9.26.
This occurred during the strong El Niño of 1982-83.

1970: Drought in Southern California climaxed and hot Santa Ana winds blew starting on 9.25 and ending on this day.
The temperature soared to 105° in LA and 97° in San Diego on this day.
Winds peaked at 60 mph at Cuyamaca.
The winds sparked the Laguna Fire, one of the largest in California history.
Eight were killed, 400 homes were destroyed, and 185,000 acres were burned as of 9.28 from Cuyamaca to Alpine.
In all, the fire consumed whole communities of interior San Diego County.
Half a million acres were burned and caused fifty million dollars in damage.

1962: Scattered thunderstorms around Needles produced flash flooding that led to the closure of several highways.

1948: It was 32° at Palomar Mountain, the earliest freezing temperature for the season on record.

1948: Trace of snow at Yosemite Valley, only one of two occurrences of snow here in September.

1939: "El Cordonazo" or "The Lash of St. Francis", an actual tropical storm hit Southern California on this day and on 9.26 and caused the greatest September rainfall ever.
The storm lost hurricane status shortly before moving onshore at San Pedro at tropical storm strength.
Torrential rains hit LA with 5.42 inches in 24 hours. Mt. Wilson received 11.60 inches.
Both of these amounts are also records for the entire month of September.
Nearly seven inches fell in three hours at Indio from one thunderstorm.
9.65 inches fell at Raywood Flat and 1.51 inches fell in Palm Springs.
2.81 inches fell in Santa Ana, the greatest daily amount on record for September.
45 were killed in floods all over Southern California, and 48 more were killed at sea in estimated seas of 40 feet.
$2 million damage occurred to structures along the coast and to crops.
The eastern Coachella Valley was under two feet of water.
Californians were generally unprepared and were alerted to their vulnerability to tropical storms.
In response, the weather bureau established a forecast office for Southern California, which began operations in February of 1940.

Source: NWS Hanford & San Diego

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