Friday, July 20, 2012

[californiadisasters] On This Date In CA Weather History (July 20)



2008: A rare early morning thunderstorm hit the Coachella Valley.
On the edge of the storm in Cathedral City, 1.25" of rain fell in 30 minutes.
15 to 20 businesses and several homes were damaged at a trailer home park.
Highway 111 was closed because of mud and rocks.

2006: A thunderstorm tracked across the southwestern portion of Yosemite National Park during the afternoon hours knocking down trees and power lines at El Portal and as well as downing trees along the Wawona Highway.
In the Kern County desert, a thunderstorm trekked through in the late afternoon hours causing trees and power lines to fall and even blowing out car windows.

1998: Heavy thunderstorms caused flooding at Mission Beach and at Barton Flats in the San Bernardino Mountains.
Lightning sparked at least five fires in San Diego County.
Strikes also hit a Clairemont home, and two trees in Pacific Beach.
Lightning also caused a few power outages.

1987: A rare cold air mass for mid-summer descended on the region starting on 7.18 and ending on 7.21 and broke numerous low temperature records.
It was 39° in Palomar Mountain, the lowest temperature on record for July.
This also occurred two days previous on 7.18 and on the next day 7.21.

1979: Thunderstorms hit Southern California, especially hard in the Coachella Valley and surrounding mountains.
1.92" of rain fell in Idyllwild and 1.29" fell in Borrego Springs, each the greatest daily amount on record for July.
2.50" of rain fell in Palm Springs, 1.10" fell in Palomar Mountain and 1.09" fell in Big Bear Lake.
Around Palm Desert and Rancho Mirage a debris flow killed one and caused $7 million damage.
Flash flooding hit hundreds of homes in Rancho Mirage, Palm Desert and La Quinta.
Some residents were swept out of their homes during the night.

1974: A tornado in Hemet caused property damage.

1960: Paso Robles ties its all-time high of 115°.

1956: A flash flood in northwest Reno, NV, destroyed homes and flooded businesses.

1931: Both Reno, NV, and Carson City, NV, recorded high temperatures of 106°.
Tahoe City registered its all-time record high temperature for the month of July with a reading of 93°.

1915: An all-time high temperature of 115° was recorded at Yosemite Valley at the National Park Headquarters (around 4,000 feet in elevation).
This was the warmest day in a streak of 7 consecutive days of 110° or better at Yosemite Valley that extended from July 19th through the 25th.

1905: The high temperature at Lovelock, NV, was 107°.

Source: NWS Hanford, Reno, & San Diego

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