Rainfall over the 6-day period reached 10"-13" along the coastal slopes, and 2"-7" along the coast and in coastal valleys.
Snow fell at elevations as low as 4,000 feet with 2'-5' of snow above 5,500 feet and as much as 6' on the highest peaks.
Hundreds of trees were downed along the coast where winds gusted to 50-60 mph.
Palomar Mountain recorded a 93 mph wind gust!
2010: A very wet and dynamic series of storms started on 1/18/2010 and ended on this day.
Rainfall ranged from 2"-4" in the deserts, to 4"-8" west of the mountains, to 6"-12" on the coastal slopes.
Widespread flooding resulted across the region.
Snowfall of 40"-60" was reported at the higher resorts, with up to 84" at the highest ski resorts.
Some of the worst flash flooding occurred in the high desert on the 1/21/2010 due to the prolonged heavy rainfall.
Scores of homes and several schools sustained damage, and many roads were washed out in Hesperia, Apple Valley, Victorville and Adelanto.
Numerous swift water rescues were needed, one of which likely saved four teens trapped in a storm water drain.
On 1/19/2010 a tornado went through Seal Beach and Huntington Beach causing local damage including boats in Huntington Harbor, and wind gusts reached 60 mph in San Clemente.
Several waterspouts and very strong winds of 93 mph were also reported in Newport Beach and Huntington Beach.
On 1/21/2010 the surface pressure fell to an all-time record low of 29.15" (987.1 mb) at San Diego Lindbergh Field, the lowest since reliable pressure records began in 1880.
Two deaths in Tijuana were attributed to the flooding.
A tree fell onto a mobile home in Lakeside, causing one fatality on 1/19/2010.
2010: Widespread rain and snow, which began on January 18th, covered the region for a 5 day period with some locations receiving well over the total rainfall received in all of 2009.
For a five day period starting on the 18th, Las Vegas, NV, recorded 1.7" of rain which was greater than the total of 1.59" in all of 2009.
2006: A Santa Ana wind event brought peak winds from this day to 1.24.
On 1.24 at Fremont Canyon gusts reached 71 mph.
During these days, wind gusts exceeded 60 mph on 19 observations there.
Seven big rigs overturned in Fontana.
Downed power lines and trees caused power outages and property damage.
A roof of a carport was torn off in Hemet.
A dust storm closed Ramona Expressway.
1997: Marin County experienced widespread heavy rainfall with over 3" reported and more than 2" received in 4 hours.
Local flooding occurred in Felton due to a band of heavy showers that moved over the San Lorenzo Mountains.
1996: A storm across Southern California that started on this day and ended on 1.23 brought 12" of snow above 4000 feet.
1988: Strong offshore winds followed a major Pacific storm that started on 1.21 and ended on this day.
Gusts reached 80 mph at the Grapevine and 60 mph in Ontario.
Power poles, road signs and big rigs were knocked down in the Inland Empire.
In San Diego County, roofs were blown off houses, trees were toppled and crops destroyed.
A barn was demolished in Pine Valley.
20 buildings were destroyed or damaged at Viejas.
Avocado and flower crops were destroyed in Fallbrook and Encinitas, respectively.
Five greenhouses were destroyed in Encinitas.
Six were injured in San Diego County from the winds.
1983: A series of storms produced surf up to 16 feet from this day to 1.29 (across Southern California).
Several piers collapsed.
Damage was done to numerous businesses and homes.
Several injuries occurred as people were swept off rocks.
1969: Heavy rains of tropical origin began on 1.18 ended on 1.28.
As much as 50 inches of rain fell at 7,700 feet.
31" of rain fell on the south slopes of Mt. San Gorgonio, 15..5" at San Jacinto Peak, around 10" at Banning, less than 1" from Indio southeast.
87 were reported dead from flooding and mud slides all over California.
Scores died in traffic accidents.
Hundreds of homes and buildings were destroyed in slides, including 14 destroyed and 11 damaged homes in Mt. Baldy Village.
50 homes near Forest Home (Forest Falls) were damaged by flooding.
Highways and railroads washed out. Power outages occurred.
Cucamonga Creek itself caused $10 million in damage.
The Mojave River took out numerous bridges and flooded farmlands in the upper desert.
Strong storm winds felled trees which killed four and caused power outages.
1967: 30" of snow fell at Tahoe City.
1967: Two back to back storms starting on 1.21 and ending on 1.25 brought 9.24" of precipitation to Lake Arrowhead, 5.46" to Palomar Mountain, 4.86" to Big Bear Lake, 4.24" of rain to San Bernardino, 4.04" to Idyllwild, 2.81" to Santa Ana, and 2.13" to San Diego.
Several roads were flooded and closed for a time.
Heavy snowfall amounted to 24" at Big Bear Lake, 20" at Lake Arrowhead, and 8" at Idyllwild and Palomar Mountain.
Roads were closed for a time..
1962: The heaviest winter storm in 13 years struck the San Bernardino area with 2.93" in Ontario and about two inches in San Bernardino on 1.22 and on this day.
Minor flooding of streets and neighborhoods resulted.
Snow that started on 1.20 and ended on this day reached the lower elevations with two inches in Victorville, Barstow and Yucaipa.
Highways were closed. 27" fell in Big Bear Lake and 24" in Lake Arrowhead over the three days.
1962: Fresno's biggest snow in 32 years: 2.2" fell.
The snow closed schools and caused a rush of people to stores seeking to buy film to photograph this unusual event.
Many roads were slippery and some were closed altogether.
5 people died on Valley roads due to the slick conditions.
Other amounts in the Valley included 4" at Madera, 3" at Wasco, 2" at Hanford, Avenal, Buttonwillow and 1.5" at Los Banos.
The higher elevations were buried in snow: 33" was reported at Badger Pass in Yosemite National Park.
1937: It was 24° F in San Luis Obispo setting a monthly record low.
1937: A massive arctic high built south over the Western US bringing a very cold and dry airmass to the Southern California region.
Temperatures in SoCal tumbled, and all-time record lows were set in Indio (13° F), Palm Springs (10° F), and Newport Beach (29° F).
It was 22° F in Escondido and 19° F in Palm Springs, each the lowest temperature on record.
It was 21° F in Riverside, the lowest temperature recorded in January and the second lowest on record.
1937: Latest in the year Bakersfield has had a temperature in the teens, low of 19° F.
1937: Carson City, NV reported a morning low of -14° F.
1909: 4.53" of rain fell in San Bernardino on 1.21 and this day.
At Pine Crest (Crestline) 7" fell and at Waterman Canyon 4.11" fell in 24 hours.
Lytle Creek, Waterman Canyon and the Santa Ana River all flooded.
Railroad damage occurred in Mill Creek and Colton.
1890: The morning low temperature at Reno was -9° F.
Source: NWS San Francisco/Monterey, Hanford, Reno, Las Vegas, & San Diego