Late-season storms will impact the West this week, bringing much cooler air, rain and mountain snow to California.
The first storm will be rather slow-moving, spreading more rain into the Bay Area of California today.
"This will be a pretty good rainmaker," Ken Clark, AccuWeather.com expert senior meteorologist, said. "A general rainfall in north-central California from the Bay Area to Sacramento will be 0.50-1.00 inch."
Even more rain will fall in the western slopes of the coastal ranges and the Sierra.
While the rain is welcome in California, travel problems are likely to result. Low clouds and rain could delay flights at the San Francisco International Airport, while traffic may be slowed on the ground.
With chilly air arriving, it will be snow that falls in the higher elevations. One to two inches of snow will accumulate at resort level in the Sierra with some disruptions possible along major passes such as Donner Pass.
"Rain will reach the Los Angeles Basin into Wednesday morning with about one third to two thirds of an inch falling," Clark said.
Snow will fall over the mountains of Southern California by midweek with snow levels as low as 4,500 feet. Some snow may even mix in down to pass level, but no accumulation is expected.
The cooler and unsettled weather pattern will last through late-week in the West.
Joaquin continues its journey across the northern Atlantic toward Europe, where it is expected to reach Spain and Portugal this weekend.
Winter will kick off with mild weather in the Northeast and mid-Atlantic as an intensifying El Nino influences the weather pattern across the country.
Choi-wan is weakening and set to lose its tropical characteristics by Thursday night, but that will not prevent northern Japan and neighboring Russia from facing strong winds, heavy rain and pounding seas.
Oho will hit parts of British Columbia and Alaska with drenching rain, gusty winds and pounding seas before the week comes to an end.
After historic rainfall across South Carolina, dam breaches and failures have aggravated already dangerous flooding problems.
Beginning in the evening hours of Oct. 8 and continuing through Oct. 9, the peak of the Draconid meteor shower will become visible to eager stargazers.
New England (1962)
Hurricane Daisy produced heavy rains; Reading, MA received 12.10 inches from 5-7th; floods and tide damage in eastern New England/Nova Scotia.
Puerto Rico (1970)
Floods caused "most widespread natural disaster in recent years". A total of 38.42 inches of rain fell in 6 days, causing $62 million damage; 18 people were killed.
Seattle, WA (1981)
Four inches of rain in 24 hours, a record for the city.