Coastal rains Idaho tip to get some
- Thread starter donbrown
- Start date
By Chrissy Warrilow
Published: October 23, 2014
A heavy rain maker has set up in the Pacific Northwest, and it will continue to bring much needed rain and mountain snow through the weekend.
The Setup
A large dip in the jet stream has developed over the Pacific Ocean near the West Coast. Meanwhile, an upper-level low is centered in the Gulf of Alaska.
This upper-level low, coupled with the jet stream, will pump moist air from the Pacific Ocean into Washington, Oregon and Northern California.
Umbrella Weather Into The Weekend
The first round of storms will continue overnight as a low pressure system and its trailing cold front barrel into the Pacific Coast from Seattle-Tacoma to Portland and Medford. Areas as far south as Eureka and Redding can expect soaking rains and gusty winds.
On Friday, rain will taper off for much of the region, with the exception of Oregon and central Idaho, as the initial low weakens and diminishes.
On Saturday, a second low pressure system will usher heavy rain into the Pacific Northwest. This second system is forecast to bring rain as far south as San Francisco and Sacramento, as well as snow over the higher elevations of the Sierra Nevada mountains.
(FORECAST: Seattle | Portland | Medford | Eureka | Redding | San Francisco | Sacramento)
A general 1 to 3 inches is expected from Northern California through coastal Oregon through Saturday, with up to 4 to 5 inches possible in some spots.
Too Much of a Good Thing?
Heavy rain over the next few days may not be a welcomed sight in Seattle, which has already received almost 36 inches of rain this year, a surplus of more than 11.5 inches.
Going into the weekend, as much as 1.5 to 2.5 inches of rain are expected to fall within the inland valleys of southwest Washington and northwest Oregon.
Along the coast, 2 to 4 inches of rain are expected; some areas along the coastal range and Cascades could see as much as 3 to 6 inches of rain.
Such heavy amounts of rain may produce flash flooding and debris flows or mudslides within burn scar areas from recent wildfires. In urban areas, fallen leaves in storm drains may impede the flow of rainwater runoff, leading to minor urban flooding.
While the heaviest rains will fall further north, portions of central California may also get a nice soaking. Unfortunately, though, it will not be enough to relieve cities such as Sacramento and San Francisco from drought conditions.
San Francisco's rainfall total for this year is over four inches below normal, and Sacramento is running about 4.25 inches below normal as well. Further north in California, Mount Shasta is running a deficit of almost 13 inches.
Published: October 23, 2014
A heavy rain maker has set up in the Pacific Northwest, and it will continue to bring much needed rain and mountain snow through the weekend.
The Setup
A large dip in the jet stream has developed over the Pacific Ocean near the West Coast. Meanwhile, an upper-level low is centered in the Gulf of Alaska.
This upper-level low, coupled with the jet stream, will pump moist air from the Pacific Ocean into Washington, Oregon and Northern California.
Umbrella Weather Into The Weekend
The first round of storms will continue overnight as a low pressure system and its trailing cold front barrel into the Pacific Coast from Seattle-Tacoma to Portland and Medford. Areas as far south as Eureka and Redding can expect soaking rains and gusty winds.
On Friday, rain will taper off for much of the region, with the exception of Oregon and central Idaho, as the initial low weakens and diminishes.
On Saturday, a second low pressure system will usher heavy rain into the Pacific Northwest. This second system is forecast to bring rain as far south as San Francisco and Sacramento, as well as snow over the higher elevations of the Sierra Nevada mountains.
(FORECAST: Seattle | Portland | Medford | Eureka | Redding | San Francisco | Sacramento)
A general 1 to 3 inches is expected from Northern California through coastal Oregon through Saturday, with up to 4 to 5 inches possible in some spots.
Too Much of a Good Thing?
Heavy rain over the next few days may not be a welcomed sight in Seattle, which has already received almost 36 inches of rain this year, a surplus of more than 11.5 inches.
Going into the weekend, as much as 1.5 to 2.5 inches of rain are expected to fall within the inland valleys of southwest Washington and northwest Oregon.
Along the coast, 2 to 4 inches of rain are expected; some areas along the coastal range and Cascades could see as much as 3 to 6 inches of rain.
Such heavy amounts of rain may produce flash flooding and debris flows or mudslides within burn scar areas from recent wildfires. In urban areas, fallen leaves in storm drains may impede the flow of rainwater runoff, leading to minor urban flooding.
While the heaviest rains will fall further north, portions of central California may also get a nice soaking. Unfortunately, though, it will not be enough to relieve cities such as Sacramento and San Francisco from drought conditions.
San Francisco's rainfall total for this year is over four inches below normal, and Sacramento is running about 4.25 inches below normal as well. Further north in California, Mount Shasta is running a deficit of almost 13 inches.
NOAA increasing expectations for more H20 to hit TAHOE area saturday
10-24-10-26 fast storm to drop 1 to 1.5 inches H20 thru Donner Pass (as at 1/2 inchm yesterday)
For Truckee start SAT noon for 24 hours ... TEMP start mid 40s then a low of 29F at END of storm.
Shasta area 2 plus inches h20.
NET WEEKEND HALLOWEEN computer models predict 1-2inche H20 in MAMMOTH ! Leaving atleast a foot inthe village !
10-24-10-26 fast storm to drop 1 to 1.5 inches H20 thru Donner Pass (as at 1/2 inchm yesterday)
For Truckee start SAT noon for 24 hours ... TEMP start mid 40s then a low of 29F at END of storm.
Shasta area 2 plus inches h20.
NET WEEKEND HALLOWEEN computer models predict 1-2inche H20 in MAMMOTH ! Leaving atleast a foot inthe village !
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