The cold snap began on the 12th of January and persisted through the 18th.
The coldest temperatures occurred from the 13th through the 15th.
Overnight lows on the morning of the 15th included: Napa Airport.............18° F Santa Rosa Airport.......20° F Downtown San Francisco...37° F.
2007: A cold snap peaked on this day.
It was -7° F at Fawnskin, -2° F at Big Bear Lake and Wrightwood, 5° F at Hesperia, 6° F at Mt. Laguna, 10° F at Borrego Airport, 12° F at Campo, 16° F at Ramona, 18° F at Thermal, 19° F in Hemet, 20° F at Camp Pendleton.
$114.7 million in crop damage resulted in San Diego Co., $86 million in Riverside Co., and $11.1 in San Bernardino Co.
$600 thousand damage resulted from broken pipes in San Bernardino Co.
All 3 counties were declared disaster areas.
2007: Very cold air spread across Southeast California and Arizona during the weekend of January 14, 2007.
The coldest two consecutive mornings since December of 1978 occurred at Phoenix Sky Harbor airport when the minimum temperature dropped to 29° F on January 14 and 15.
Low temperatures were well below freezing in nearly all desert locations with temperatures into the teens at the coldest spots.
Other lows on the 15th included 18° F at Coolidge, 20° F at East Mesa, 23° F at Waddell and 26° F at Scottsdale airport.
Some effects of the freeze included burst pipes, damaged plants, and widespread losses to citrus crops.
One nursery in Mesa reported a loss of 200,000 ficus trees.
The citrus crops alone suffered losses estimated between $2 million and $4 million.
1997: Two funnel clouds sighted east of Tulare.
1997: A storm that began on 1.12 and ended on this day brought 18" of snowfall to Mt. Laguna.
Generally 18" to three feet of snow was reported above 2500 feet.
The ski resort at Snow Valley remained open until 5.18, the latest in its 78 year history.
13 illegal immigrants died from exposure near Pine Valley.
1994: Dense fog in the central and southern San Joaquin Valley.
A pair of chain-reaction accidents near Selma involve 48 vehicles, resulting in 2 fatalities and injuring 32.
Another chain-reaction accident, near Merced, involved 19 vehicles, injuring 8.
1993: A very wet series of storms that began on 1.6 and ended on 1.18 produced 20"-50" of precipitation in the mountains and up to 12" at lower elevations over a two week period.
It was one of the longest periods of consecutive days of precipitation on record (13) and measurable rain fell nearly every day from 1.2 to 1.19.
Flooding and flash flooding, mud slides, etc., resulted.
On this day through 1.17, heavy flooding occurred on the Santa Margarita and San Luis Rey Rivers.
Highway 76 was washed out near I-15.
The airports at Camp Pendleton and Oceanside sustained flood damage.
In Tijuana, homes and streets were flooded along the Tijuana River.
Five died and 139 people were caught in floodwaters, 600 were evacuated.
1987: Snow flurries were observed in Bakersfield during the late morning hours for about 30 minutes.
Also observed in Lamont briefly in the early afternoon.
1978: Starting on 1.14 and ending on this day, 2.65" of precipitation fell in San Diego, the greatest 24-hour total on record for January.
1952: 42" of snow fell at Tahoe City (west shore Lake Tahoe).
1952: A series of storms brought heavy rain and mountain snow to the region starting on 1.13 and ending on 1.18.
5.52" fell in San Bernardino over the six days.
Flooding was reported in Upland and Ontario.
Heavy snow hit the San Bernardino Mountains with 40" in Lake Arrowhead (with a snow depth of 46"), and 37" in Big Bear Lake.
All mountain roads were blocked and closed because of snow slides.
1952: Bishop recorded 3.32" of precipitation, which was the second greatest one day total in January and second greatest total ever.
A total of 9" of snow was also recorded on this day.
1950: The morning low at Portola was -19° F.
1949: For the first time in 6 days Palomar Mountain failed to record snowfall.
Snowfall from the prior 6 days totaled 74".
This is by far the snowiest period at Palomar Mountain since records began in 1901.
The next largest six-day total was 48" in 1991.
Lake Arrowhead recorded 48" over six days.
1949: Reno, NV, had a morning low of -12° F.
1932: Up to 2" of snow fell all over the LA Basin.
1" was recorded at the LA Civic Center and even the beaches of Santa Monica were whitened.
18" fell in Julian, 17" at Mt. Laguna, 14" at Cuyamaca, and 6" at Descanso.
1916: Widespread heavy rains hit Southern California starting on 1.14 and ending on 1.21.
8.5" fell during this period in San Bernardino.
16.71" fell in 24 hours at Squirrel Inn (near Lake Arrowhead) on 1.16 and on 1.17, a record 24 hour rainfall for California until 1943.
More than 9" fell in two storms in the Coachella Valley.
Previous storms had deposited deep snow in the mountains, adding to the runoff.
Widespread flooding resulted and at least 22 died.
Roofs in Chula Vista, poultry farm in Vista, boats in Coronado and Newport were damaged.
Most cities were completely inundated.
Pine trees from Palomar Mountain floated down the San Luis Rey River through Oceanside.
The cities of Indio, Coachella and Mecca were underwater.
Ontario and Redlands were isolated and roads, railroads and bridges were washed out.
1911: Very cold weather descended on the region sending overnight lows off a cliff.
The all-time lowest temperature on record was recorded in Riverside with a
morning low of 18° F.
1888: Downtown San Francisco recorded a low temperature of 29° F.
Source: NWS San Francisco/Monterey, Hanford, Reno, Las Vegas, Phoenix, & San Diego