Sunday, December 24, 2017

[californiadisasters] On This Date In California Weather History (December 17)

2010: A very wet period began on this day 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 2 feet above 7500 feet.

2010: This date was the start of a series of storms bringing record amounts of rainfall to much of the Hanford Warning/Forecast Area; this series lasted until the morning of the 23rd.
Kern County started receiving most of their heavy rain on the following day.

A strong low pressure system moved slowly through Southern California, producing very heavy snow.
A snowstorm of a magnitude that hasn't occurred since 1979 descended on the mountains and high deserts from 12.15 to 12.18.
About a foot of snow fell in the higher elevations of Joshua Tree NP.
Snow was also reported in many lower desert areas.
Some roads were either closed or traffic was restricted.
Impressive snow totals include 54" at Big Bear, almost 36" at Wrightwood, 20" at Pinon Hills, and 16" at Hesperia, Idyllwild and Julian.
Most of the snow fell on this day.
Interstate 15 was closed from San Bernardino to the Nevada state line for many hours.

2008: Light rain began falling on the southern portions of the Las Vegas valley just after sunrise, but changed to snow by mid day as cold air was being drawn in from the northeast.
By late afternoon snow began accumulating on most surfaces including roads.
The heaviest snow occurred between 400 pm and 800 pm before finally ending or changing to rain around 1000 pm.
Officially 3.6" of snow was recorded at the National Weather Service office in the south part of the valley.
Areas around the Las Vegas Strip and Mccarran International Airport received between 2-3" of snow.
The hardest hit area was around Henderson where 5-10" of snow was reported.
Amazingly areas to the west and north such as Summerlin and North Las Vegas received very light amounts or none at all.
This was also the most snow ever recorded in December. Yucca Valley, California recorded between 12-15" of snow which is one of the biggest snowstorms to ever hit that area.

1987: A heavy rain storm brought copious rain to San Diego County on 12.16 and on this day: 2.01" fell in Oceanside, 2" in El Cajon and La Mesa, 1.97" in National City, 1.85" in Poway, and 1.73" in Montgomery Field.
Minor flooding occurred in Mission Valley.
24" of snow fell in Julian on 12.16 and on this day and 9" of snow fell at Mt. Laguna.
All schools were cancelled in the mountains of San Diego County.

1978: A tornado in Oceanside injured three and caused damage to vehicles and structures.

1977: Salinas received 2.95" of rain.

1970: A series of storms brought heavy rain and snow to the region starting this day 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.

1970: 30" of snow fell at Tahoe City (west shore Lake Tahoe).

1967: A period of snow began on 12.13 and ended on 12.19.
The entire period of snow brought 50" to Mt. Laguna, 38" in Idyllwild, two feet to Palomar Mountain, and 12"-18" to the higher elevations.
One freezing death resulted, numerous schools and highways were closed, transportation was disrupted and there were power outages.

1961: Very strong winds overturned trailers, blew down trees, and damaged signs in the Reno, NV area.

1958: Paso Robles dropped to 15° F, all-time monthly low.

1924: Porterville received 1" of snow.

1897: It was 26° F in Riverside.

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



Posted by: Kim Noyes <>

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