- An expansive storm will continue to impact the West with snow, rain and strong winds through late this week.
- Snow and wind from this storm will move into the Northern Plains and upper Midwest late this week into the weekend.
- Wintry weather could push into parts of the Northeast over the weekend.
- This storm became a bomb cyclone Tuesday due to its incredibly fast rate of intensification.
Snow, rain and strong winds will make travel conditions difficult in parts of the West through late week from an expansive storm that will slowly spread toward the central and eastern United States into this weekend. Snow from this storm system is affecting a large area of the West right now from California’s Sierra Nevada eastward to interior parts of the region. Rain is also spreading through portions of California.
This storm will track slowly eastward from the West toward the central and eastern U.S. into this weekend through a sharp southward plunge of the jet stream.
Below is the forecast for the next several days. You can also find a recap of how this storm became a bomb cyclone when it first struck northwest California and southwest Oregon on Tuesday.
The slow-moving storm will affect areas from California to the interior West, bringing rain and snow.
Snow will fall in the upper foothills of the Sierra Nevada and down to valley floors of the interior West. Interstate 80 will be impacted by snowfall from the Sierra Nevada to Utah, including Salt Lake City.
Soaking rain will move into Southern California, but rainfall totals will not be excessive in most areas. Major debris flows are unlikely unless a thunderstorm with higher rainfall rates moves over a burn area.
Snow levels will also begin to fall as low as 3,500 to 4,000 feet in the mountains of Southern California by Wednesday night.
Snow will fall at elevations as low as 2,000 to 3,000 feet in the mountains of Southern California on Thanksgiving Day. The snowfall will impact travel on Interstate 5 through the Grapevine, Interstate 15 through Cajon Pass and Interstate 8 in the mountains of San Diego County.
Showers and isolated thunderstorms are likely from the valleys of Southern California to southern Arizona and southern New Mexico. Localized flash flooding is possible in any heavier or more persistent rainfall in these areas.
Snow will also spread through the Rockies, including down to the valley floors in some areas.
The storm will begin to spread light snow, freezing rain and sleet from parts of New Mexico into the Texas Panhandle and the Central Plains.
Snow will continue across much of the interior West on Friday from northern Arizona and northern New Mexico to Montana. This will affect travel down to valley floors in some areas.
Rain and snow should begin to taper off in California.
Snow and increasing winds will also develop in parts of the Northern Plains and upper Midwest, but details are still uncertain.
Severe thunderstorms are possible on the warm side of this storm. At this time, areas from north-central Texas into Oklahoma have the greatest chance of experiencing severe weather. If the surface air becomes unstable enough, tornadoes will be possible.
The sprawling storm will continue to bring more snow and wind to the Northern Plains and upper Midwest on Saturday. Blizzard conditions could impact parts of the Northern Plains, particularly parts of the Dakotas.
Snow, sleet and freezing rain might also develop in portions of the Northeast, especially in the interior by Saturday night.
Rain and thunderstorms will likely spread through parts of the lower Mississippi, mid-Mississippi and Ohio valleys. Some severe weather is again possible in the South.
By Sunday, the storm could bring snow from the upper Midwest to New England, with rain from the mid-Atlantic to the Southeast. These details will likely change, so be sure to check back for updates.
Higher elevations of California’s Sierra Nevada could receive up to 4 feet of snow through Thanksgiving Day.
Snowfall totals of 1 to 3 feet are possible in the highest elevations of Southern California.
Salt Lake City could also pick up 6 or more inches of snow through late this week. Albuquerque and Santa Fe, New Mexico, could see several inches of snow from later Wednesday into Thanksgiving Day.
This storm could produce one of the heaviest autumn snows on record in Flagstaff, Arizona, where 2 feet or more may fall from Wednesday into Saturday, according to the National Weather Service.
It’s too early to determine exact snowfall totals for parts of the Northern Plains, upper Midwest and Northeast later this week into the weekend.
Bomb Cyclone Recap
As this intense storm approached the coast of southwestern Oregon and northwestern California on Tuesday evening, it underwent bombogenesis. The storm’s minimum central pressure dropped 43 millibars in 24 hours, far exceeding the criteria of 24 millibars within 24 hours to be deemed a bomb cyclone. What this means that the storm is unusually intense and capable of producing high winds.
On Tuesday night, the pressure dipped to at least 973.4 mb in Crescent City, California. This value was an unofficial all-time record for the lowest sea-level pressure observed anywhere in the state of California, according to the National Weather Service office in Eureka.
Simply spectacular. This looks more like a Nor’easter off the east coast or the great storms of the Great Lakes. Not something you would typically see on the Oregon-California border. #BombCyclone #ORwx #CAwx pic.twitter.com/T5X2BG2FRw
— Craig Ceecee (@CC_StormWatch) November 27, 2019
Cape Blanco, Oregon – the notoriously windy spot on the Pacific Northwest coast – recorded a sustained wind of 85 mph with a gust to 106 mph early Tuesday afternoon.
The National Weather Service in Eureka, California, said thousands of people were without power in northwestern California, as the strong winds had taken down trees and power lines across the region.
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Thousands of people are now without power across the region with trees down and power poles snapped. Power is flickering at the office. Also reports of structural wind damage in Crescent City. Be careful out there! #cawx
— NWS Eureka (@NWSEureka) November 26, 2019
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Areas of rain or showers for many, the rain becoming more focused across parts of northern Scotland and eastern England but with scattered heavy showers elsewhere. Some sunnier breaks, mainly in western areas of the UK. A little less mild.
Rain in parts of east, northeast and central Britain, with a scattering of showers in coastal areas elsewhere. Windy in northern areas and turning colder there with patchy frost.
Still some rain or showers, especially across eastern and central parts at first but sinking southwards later. Northern Britain noticeably brighter and colder, with scattered showers, wintry on hills.
Outlook for Friday to Sunday:
Colder and mainly dry away from northern and eastern coasts; here some wintry showers are likely. Cloudier for a time Saturday into Sunday in the south with some rain.
NH Snow cover extent to wk44, highest since 1999
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