Friday, December 19, 2014

[californiadisasters] On This Date In California Weather History (December 19)

2010: A very wet period began 12/17 and continued through 12/22 as strong westerly flow across the Pacific tapped a pool of deep subtropical moisture near Hawaii, resulting in days of moderate to heavy rainfall.
4"-12" of rain fell in the coastal and valley areas over six days, 12"-28" in the mountains, up to 9" in the high desert and less than 4" in the lower desert.
Major landslides and flash flooding impacted the communities of Laguna Beach, Apple Valley, along the Whitewater Channel in the Coachella Valley near Palm Springs, Highland, Corona, Loma Linda, La Jolla, and the city of San Diego from 12/21 to 12/22.
Qualcomm Stadium was flooded, but was miraculously drained and prepared for the Poinsettia Bowl held there on 12/23.
Heavy wet snow accumulated above 6500 feet with amounts over 6" and as much as 24" above 7500 feet.

2010: Record-breaking rainfall continues since Dec 17th for much of the Hanford Warning/Forecast area.

Severe freeze begins its grips in the Valley during the late-night hours of the 19th.
Freezing temperatures were recorded on each day from December 19th-30th across the Valley.
Both Fresno and Bakersfield recorded up to 8 consecutive mornings with lows of 28° or lower during this freeze event.
Nearly $600 million in damages occurred, with the most catastrophic losses in citrus.

1997: A period of Santa Ana winds started on 12.18 and ended on 12.21. Gusts of 60 mph were reported at Rialto.
Gusts of 67 mph were reported at Idyllwild and below Cajon Pass.
One was killed.
The winds downed trees, caused widespread wind damage and contributed to a fire.

1991: Strong northerly winds resulted from a deep low pressure system over Arizona starting on this day and ending on 12.21.
Top gusts reached 63 mph in the Santa Monica Mountains, 52 mph in Van Nuys, and 36 mph at LAX airport.

1990: Sustained winds over 40 mph caused very rough water on Lake Tahoe.
As a result, approximately 100 people were stranded on a tour boat for about four hours.

1984: An area of low pressure brought up to 18" of snow fell at Tehachapi Pass and up to a foot to Lake Isabella.
Heavy, wet snow fell of up to a foot was measured in the Antelope Valley portion of the Kern County deserts prompting the closure of Edwards Air Force Base due to snow for the first time ever.

1984: A major snowstorm that started on 12.18 and ended on this day brought up to 16" to the mountains and upper deserts, including 13" to Lancaster.
Edwards AFB and Interstate 5 (from Castaic to the San Joaquin Valley) were both closed.

1978: A tornado in Oceanside injured three and caused $15,000 damage to vehicles and structures.

1970: A series of storms brought heavy rain and snow to the region starting on 12.17 and ending on 12.22. 7.03" of precipitation was recorded in Palomar Mountain, 6.93" in Lytle Creek, 6.35" in Lake Arrowhead, 5.38" in Idyllwild, 4.72" in Big Bear Lake, 2.81" in San Bernardino, 2.67" in Santa Ana, 2.27" in Riverside, and 1.84" in San Diego.
Several roads were flooded and washed out in the northern Inland Empire, exacerbated by the extensive burn areas from earlier in the fall.
Snowfall amounts were 32" in Idyllwild, 28" in Big Bear Lake, 26" in Palomar Mountain, and 24" in Lake Arrowhead.

1967: A period of snow in the mountains began on 12.13 and ended on this day.
The entire period of snow brought 50" to Mt. Laguna, 38" in Idyllwild, 24" to Palomar Mountain, and 12"-18" to the higher elevations.
On this day 15" of snow fell in Big Bear Lake, the greatest daily snowfall on record for December.
One freezing death resulted, numerous schools and highways were closed, transportation was disrupted and there were power outages.

1924: The morning low temperature at Lovelock, NV was -13° F.

1866: 4.28" of rain fell in downtown San Francisco -- the third greatest amount ever.

Source: NWS San Francisco/Monterey, Hanford, Reno, & San Diego



Posted by: Kim Noyes <>

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