CALIFORNIA SNOW REPORT

* WHAT...Heavy snow. Additional snow accumulations up to 85 inches. Winds gusting as high as 55 mph. * WHERE...A portion of central California. * WHEN...Until 10 PM PST Friday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. Travel could be very difficult to impossible. The hazardous conditions could impact the Wednesday evening and Thursday morning commutes. Strong winds could cause tree damage.

* WHAT...Heavy snow. Additional snow accumulations up to 91 inches. Winds gusting as high as 60 mph. * WHERE...Yosemite NP outside of the valley. * WHEN...Until 10 PM PST Friday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. Travel could be very difficult to impossible. The hazardous conditions could impact the Wednesday evening and Thursday morning commutes. Strong winds could cause tree damage.

* WHAT...Heavy snow expected. Accumulations up to a foot between 4500 to 5500 feet. 4 to 8 feet, with locally higher amounts above 5500 feet. Wind gusts up to 60 mph. * WHERE...West Slope Northern Sierra Nevada and Western Plumas County/Lassen Park Counties. * WHEN...Until 10 PM PST Friday. * IMPACTS...Dangerous travel conditions with chain controls and road closures. Localized tree damage, power outages, and low visibility due to the combination of heavy wet snow and strong winds. * ADDITIONAL DETAILS...Snow levels will be around 4500 to 5500 feet today through Friday. Snowfall rates of 1 to 2 inches per hour at times.

* WHAT...Heavy snow expected. Snow accumulations of 1 to 3 feet above 4500 feet, with locally higher amounts at peaks. Up to 1 foot between 3500 to 4500 feet. Wind gusts up to 60 mph. * WHERE...Burney Basin / Eastern Shasta County, Mountains Southwestern Shasta County to Western Colusa County, and Shasta Lake Area / Northern Shasta County Counties. * WHEN...Until 10 PM PST Friday. * IMPACTS...Dangerous travel conditions with chain controls and road closures. Localized tree damage, power outages, and low visibility due to the combination of heavy wet snow and strong winds. * ADDITIONAL DETAILS...Snow levels will be above 5000 feet today, then drop to 3500 feet by Thursday night. Snowfall rates up to an inch per hour at times.

* WHAT...Heavy snow possible above 4000 feet. Total snow accumulations between 1 to 2 feet possible. Winds could gust as high as 55 mph. * WHERE...Trinity County. * WHEN...From 4 PM this afternoon to 10 PM PST Friday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult to impossible. Tire chains may be necessary if travelling through mountain passes.

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of central California, including the following areas, Bakersfield, Buena Vista, Buttonwillow - Lost Hills - I5, Caruthers - San Joaquin - Selma, Coalinga - Avenal, Delano-Wasco-Shafter, Frazier Mountain Communities, Fresno-Clovis, Fresno-Tulare Foothills, Fresno-Tulare Lower Sierra, Grant Grove Area, Grapevine, Hanford - Corcoran - Lemoore, Indian Wells Valley, Kaiser to Rodgers Ridge, Kern River Valley, Kings Canyon NP, Los Banos - Dos Palos, Mariposa Madera Foothills, Merced - Madera - Mendota, Mojave Desert, Mojave Desert Slopes, Piute Walker Basin, Planada - Le Grand - Snelling, Sequoia NP, South End San Joaquin Valley, South End Sierra Foothills, South End of the Lower Sierra, South End of the Upper Sierra, Southeast San Joaquin Valley, Tehachapi, Visalia - Porterville - Reedley, West Side Mountains South of 198, West Side Mountains north of 198 and West Side of Fresno and Kings Counties. * WHEN...Through Friday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. Storm drains and ditches may become clogged with debris. Extensive street flooding and flooding of creeks and rivers are possible. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of central California, including the following areas, Mariposa-Madera Lower Sierra, San Joaquin River Canyon, Upper San Joaquin River, Yosemite NP outside of the valley and Yosemite Valley. * WHEN...Through Friday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Low-water crossings may be flooded. Storm drains and ditches may become clogged with debris. Extensive street flooding and flooding of creeks and rivers are possible. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

* WHAT...South winds 15 to 25 mph with gusts up to 45 mph. * WHERE...Frazier Mountain Communities, Grapevine, Indian Wells Valley, Mojave Desert, Mojave Desert Slopes, Piute Walker Basin, and Tehachapi. * WHEN...Until 4 PM PST Thursday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

FFWSGX The National Weather Service in San Diego has extended the * Flash Flood Warning for... San Bernardino County in southern California... * Until 600 PM PST. * At 331 PM PST, emergency management reported heavy rain across the warned area. Between 8 and 11 inches of rain have fallen. The expected rainfall rate is 0.5 to 1 inch in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Emergency management reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Wrightwood, Hwy 2 Between Phelan And Wrightwood, northern Rancho Cucamonga, Hwy 138 Between I-15 And Hwy 2, Pinon Hills, Phelan and San Antonio Heights.

* WHAT...For the Storm Warning, south winds 30 to 40 kt with gusts up to 55 kt and seas 18 to 23 feet expected. For the Small Craft Advisory, southeast winds 15 to 25 kt with gusts up to 35 kt and seas 9 to 13 feet. * WHERE...Pt St George to Cape Mendocino 10 to 60 nm. * WHEN...For the Storm Warning, from 7 PM this evening to 11 PM PST Thursday. For the Small Craft Advisory, until 7 PM PST this evening. * IMPACTS...Very strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.

* WHAT...South winds 30 to 40 kt with gusts up to 50 kt and seas 12 to 17 feet expected. * WHERE...Pt St George to Cape Mendocino out 10 nm. * WHEN...From 11 PM this evening to 3 PM PST Thursday. * IMPACTS...Very strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.

* WHAT...South winds 30 to 40 kt with gusts up to 55 kt and seas 15 to 20 feet. * WHERE...Cape Mendocino to Pt Arena out 10 nm and Cape Mendocino to Pt Arena 10 to 60 nm. * WHEN...Until 3 PM PST Thursday. * IMPACTS...Very strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.

At 306 PM PST, Doppler radar indicated light to moderate rain is still occuring across the warned area. Heavy rain over the mountains caused downstream flash flooding through creeks and streams across the Antelope Valley. HAZARD...Flash flooding caused by heavy rain. Rock slides and mud slides. SOURCE...Trained spotters reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Rock slides and mud slides. Some locations that will experience flash flooding include... Lake Los Angeles, Palmdale, Lancaster, Quartz Hill, Pearblossom, Llano, Littlerock, Lake Palmdale, Valyermo, Desert View Highlands, Saddleback Butte State Park, Highway 138 between Llano and the San Bernardino County line and Highway 138 between Quail Lake and Lancaster.

At 301 PM PST, local law enforcement reported heavy rain across the warned area. Dangerous Flooding is occuring in many areas. HAZARD...Flash flooding caused by heavy rain. Dangerous flooding occuring in many areas. SOURCE...Law enforcement reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Long Beach, Thousand Oaks, Malibu, Inglewood, Culver City, Downtown Los Angeles, Manhattan Beach, Torrance, Hermosa Beach, Hollywood, Beverly Hills, Venice, Redondo Beach, Santa Monica, Rancho Palos Verdes, Alhambra, Encino and Whittier.

...THIS IS A DANGEROUS FLOODING SITUATION FOR A LARGE PORTION OF LOS ANGELES COUNTY... At 254 PM PST, Numerous flash floods, mud slides, and rock slides have been reported. This is a dangerous flooding situation in Los Angeles County. Even where rain has become lighter in intensity, flooding will likely continue and additional rainfall could worsen the flooding. Additionally, there is the possibility for the Santa Clara River at Piru to exceed minor flood stage this evening. While uncertain, if the river were to flood, then flooding along Torrey Road bridge would become hazardous. Other smaller creeks, rivers, and streams across the warning area will also have the potential to experience flooding. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. Rock slides and mud slides. SOURCE...Reported by public, broadcast media, and law enforcement. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Mud slides and rock slides. Some locations that will experience flash flooding include... Simi Valley, Fillmore, Acton, Ojai, Wrightwood, Santa Clarita, Chatsworth, Northridge, Woodland Hills, Van Nuys, Encino, North Hollywood, Burbank, Universal City, Beverly Hills, Hollywood, Griffith Park, Lancaster, Palmdale and Pasadena.

FFWSGX The National Weather Service in San Diego has extended the * Flash Flood Warning for... San Bernardino County in southern California... * Until 430 PM PST. * At 253 PM PST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 4 inches of rain have fallen. The expected rainfall rate is 0.25 to 0.75 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... San Bernardino, Hesperia, Apple Valley, Lake Arrowhead, Hwy 173 Between Lake Arrowhead And Hesperia, Crestline, Rimforest, Skyforest, Hwy 18 Between San Bernardino And Crestline and Silverwood Lake Rec Area.

* WHAT...South winds 35 to 45 kt with gusts up to 60 kt and seas 8 to 13 ft expected. * WHERE...Coastal Waters from Point Pinos to Point Piedras Blancas California out to 10 NM. * WHEN...Until 3 AM PST Friday. * IMPACTS...Storm force winds and hazardous seas will capsize or damage vessels and reduce visibility.

* WHAT...South winds 30 to 40 kt with gusts up to 60 kt and seas 10 to 15 ft expected. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 NM. * WHEN...Until 3 AM PST Friday. * IMPACTS...Storm force winds and hazardous seas will capsize or damage vessels and reduce visibility.

* WHAT...South winds 30 to 40 kt with gusts up to 60 kt and seas 10 to 15 ft expected. * WHERE...Coastal Waters from Pigeon Point to Point Pinos California out to 10 NM. * WHEN...Until 3 AM PST Friday. * IMPACTS...Storm force winds and hazardous seas will capsize or damage vessels and reduce visibility.

* WHAT...South winds 35 to 45 kt with gusts up to 65 kt and seas 14 to 19 ft expected. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 3 AM PST Friday. * IMPACTS...Storm force winds and hazardous seas will capsize or damage vessels and reduce visibility.

* WHAT...South winds 35 to 45 kt with gusts up to 65 kt and seas 12 to 17 ft expected. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 NM. * WHEN...Until 3 AM PST Friday. * IMPACTS...Storm force winds and hazardous seas will capsize or damage vessels and reduce visibility.

* WHAT...Flooding caused by excessive rainfall continues to be possible from multiple lines of showers and thunderstorms, strong at times, moving across the area. * WHERE...The Northern San Francisco Bay Area (Napa, Sonoma, and Marin counties). * WHEN...Through Friday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Low water crossings may become flooded. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Multiple rounds of moderate to heavy rainfall are expected across the North Bay through Friday evening. An additional 2-4" is possible over the North Bay Mountains and 1-3" over the North Bay Valleys by Friday. Nuisance flooding will increase through Friday with rises in smaller creeks and minor flooding along some of the mainstream rivers (Russian River, Napa River). Debris flows are possible particularly for the Pickett Burn Scar. - http://www.weather.gov/safety/flood

* WHAT...Flooding caused by excessive rainfall continues to be possible from multiple lines of showers and thunderstorms, strong at times, moving across the area. * WHERE...San Francisco County, San Mateo Peninsula, East Bay, South Bay, and Central Coast * WHEN...Through Friday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Low water crossings may become flooded. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Numerous lines of showers and thunderstorms will move across the Bay Area and Central Coast through Friday evening. An additional 1-2" of rain is expected across the interior with locally higher totals between 2-3" across the Santa Cruz Mountains and up to 3" across the Santa Lucia Range. Flooding potential will increase with each successive round of rain. Sharp rises in smaller creeks and streams are expected with at least some potential for minor flooding in mainstream rivers. - http://www.weather.gov/safety/flood

FFWSGX The National Weather Service in San Diego has extended the * Flash Flood Warning for... San Bernardino County in southern California... * Until 415 PM PST. * At 243 PM PST, Doppler radar indicated heavy rain across the warned area. Between 5.25 and 7 inches of rain have fallen. The expected rainfall rate is 0.25 to 0.5 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... San Bernardino, Fontana, Rialto, Hesperia, I-15 Through The Cajon Pass, northern Rancho Cucamonga, Devore, Silverwood Lake Rec Area, Hwy 18 Between San Bernardino And Crestline and Muscoy.

FFWHNX The National Weather Service in Hanford has extended the * Flash Flood Warning for... North Central Kern County in central California... * Until 500 PM PST. * At 143 PM PST, local law enforcement reported heavy rain across the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Law enforcement reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Bodfish, Squirrel Mountain Valley, Lake Isabella, Breckenridge Mtn, Democrat, Mountain Mesa and Kernville.

FFWHNX The National Weather Service in Hanford has extended the * Flash Flood Warning for... South Central Kern County in central California... * Until 500 PM PST. * At 142 PM PST, local law enforcement reported heavy rain across the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Law enforcement reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Frazier Park, Pine Mountain Club, Lake Of The Woods, Grapevine and Lebec.

FFWSGX The National Weather Service in San Diego has issued a * Flash Flood Warning for... San Bernardino County in southern California... * Until 430 PM PST. * At 134 PM PST, Doppler radar indicated heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. The expected rainfall rate is 0.5 to 0.75 inches in 1 hour. Additional rainfall amounts of 1.5 to 3.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Heavy rain producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... San Bernardino, Apple Valley, Redlands, Yucaipa, Forest Falls, Lake Arrowhead, Highland, Loma Linda, Big Bear Lake and Running Springs.

A series of warm atmospheric rivers will bring moderate to heavy rain to the Valley, foothills, and mountains the week of Christmas. The prolonged period of rain will bring the risk of flooding to the Sacramento Valley, northern San Joaquin Valley, northern Sierra Nevada and adjacent foothills, as well as the Coastal Range. * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northern California, including the following areas, Carquinez Strait and Delta, Sacramento Valley, Motherlode, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills, Northern San Joaquin Valley, and Shasta Lake Area / Northern Shasta County . * WHEN...Through Friday afternoon. * IMPACTS...Excessive runoff will result in rises along area rivers, creeks, streams. Small streams and creeks may rise out of their banks. Flooding may occur in low-lying, poor drainage, and urban areas. Mudslides and rockslides may occur in mountain and foothill areas. * ADDITIONAL DETAILS... - Periods of moderate to heavy rain are forecast the week of Christmas. Debris flows are not expected over recent burn scars in northern California, but do anticipate enhanced runoff in/below scars. - http://www.weather.gov/safety/flood

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of Southwest California, including the following areas, Apple and Lucerne Valleys, Coachella Valley, Orange County Coastal Areas, Orange County Inland Areas, Riverside County Mountains, San Bernardino County Mountains, San Bernardino and Riverside County Valleys-The Inland Empire, San Gorgonio Pass near Banning and Santa Ana Mountains and Foothills. * WHEN...Until 10 PM PST this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Mud and debris flow are possible near and in burn scars, including the Airport, Bridge and Line burn scars. * ADDITIONAL DETAILS... - An Atmospheric River will bring widespread moderate to heavy rain to the region today. The heaviest and most widespread rain is expected through this evening. Peak rainfall rates of 0.50 to 1 inch per hour are expected. There is a potential for locally heavier hourly rainfall rates to develop with convection embedded in the main rain band or in thunderstorms after the main band passes. Isolated heavy showers could continue into Thursday but impacts from any additional rain are expected to be more localized. Snow levels are expected to remain above 8000 feet during period of heaviest precipitation bringing a heightened risk of mud slides, debris flow, and areas of flash flooding in the San Bernardino county mountains. - https://www.weather.gov/safety/flood

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of Southwest California, including the following areas, San Diego County Coastal Areas, San Diego County Deserts, San Diego County Mountains and San Diego County Valleys. * WHEN...Until 1 AM PST Thursday. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - An Atmospheric River will likely bring widespread moderate to heavy rain to the area today. Heaviest most widespread rain is expected through this evening. Peak rainfall rates of 0.50 to 1 inch per hour are expected. There is a potential for locally heavier hourly rainfall rates to develop with convection embedded in the main rain band or in thunderstorms after the main band passes. Isolated heavy showers could continue into Thursday but impacts from any additional rain are expected to be more localized. - https://www.weather.gov/safety/flood

* WHAT...South winds 30 to 40 mph through this afternoon with gusts of 55 to 80 mph are expected. Then south 25 to 35 mph with gusts to 50 to 60 mph for tonight into Thursday afternoon. * WHERE...Apple and Lucerne Valleys and San Bernardino County Mountains. * WHEN...Until 3 PM PST Thursday. * IMPACTS...Damaging winds could blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles.

* WHAT...South winds 25 to 35 mph with gusts 45 to 60 mph expected. * WHERE...Mendocino Coast. * WHEN...From 7 PM this evening to 10 AM PST Friday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

* WHAT...South winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Del Norte Coast. * WHEN...From 2 AM to 8 PM PST Thursday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

* WHAT...South winds 20 to 30 mph with gusts up to 70 mph expected. Locally strongest over the exposed ridges and coastal headland. * WHERE...Humboldt Interior, and Southwestern Humboldt. * WHEN...From 7 PM this evening to 2 PM PST Thursday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Carquinez Strait and Delta, Sacramento Valley, Motherlode, Northeast Foothills, and Northern San Joaquin Valley. * WHEN...Until 4 PM PST Thursday. * IMPACTS...Strong winds and saturated soils could blow down trees and power lines resulting in widespread power outages. Strong winds will cause impacts to loose and unsecured items, including temporary structures and holiday decorations. Difficult travel conditions are expected, especially for high profile vehicles. * ADDITIONAL DETAILS...Lull in activity through today, with strong wind gusts expected tonight into Thursday.

* WHAT...Significant and widespread flooding caused by excessive rainfall will be likely, with potential debris flow impacts across recent burn scars. * WHERE...A portion of southwest California, including the following areas, Antelope Valley, Calabasas and Agoura Hills, Catalina and Santa Barbara Islands, Central Ventura County Valleys, Cuyama Valley, Eastern Antelope Valley Foothills, Eastern San Fernando Valley, Eastern San Gabriel Mountains, Eastern Santa Monica Mountains Recreational Area, Interstate 5 Corridor, Lake Casitas, Los Angeles County Beaches, Los Angeles County Inland Coast including Downtown Los Angeles, Los Angeles County San Gabriel Valley, Northern Ventura County Mountains, Ojai Valley, Palos Verdes Hills, San Luis Obispo County Beaches, San Luis Obispo County Inland Central Coast, San Luis Obispo County Interior Valleys, San Luis Obispo County Mountains, Santa Barbara County Central Coast Beaches, Santa Barbara County Inland Central Coast, Santa Barbara County Interior Mountains, Santa Barbara County Southeastern Coast, Santa Barbara County Southwestern Coast, Santa Clarita Valley, Santa Lucia Mountains, Santa Susana Mountains, Santa Ynez Mountains Eastern Range, Santa Ynez Mountains Western Range, Santa Ynez Valley, Southeastern Ventura County Valleys, Southern Salinas Valley, Southern Ventura County Mountains, Ventura County Beaches, Ventura County Inland Coast, Western Antelope Valley Foothills, Western San Fernando Valley, Western San Gabriel Mountains and Highway 14 Corridor and Western Santa Monica Mountains Recreational Area. * WHEN...Through Friday afternoon. * IMPACTS...This prolonged strong Atmospheric River storm system will bring periods of heavy rain from late Tuesday into Thursday evening. Potential flooding impacts include the threat of significant and widespread urban roadway flooding, a high risk of major rock/mudslides, and rapid rises in creeks, streams, and rivers which will likely lead to swift water rescues. The recent burn scars will be at risk for debris flows, possibly damaging. These flooding impacts will likely lead to significant travel delays and road closures during this busy holiday travel period. * ADDITIONAL DETAILS... - Heavy rainfall with possible thunderstorms is expected with high rainfall rates, potentially exceeding one inch per hour during the peak of the event Tuesday night into Wednesday across favored south facing slopes and near thunderstorms. Another round of heavier rain and thunderstorms will be possible on Thursday. - http://www.weather.gov/safety/flood

* WHAT...Significant and widespread flooding caused by excessive rainfall will be likely, with potential debris flow impacts across recent burn scars. * WHERE...A portion of southwest California, including the following area, Malibu Coast. * WHEN...Through Friday afternoon. * IMPACTS...This prolonged strong Atmospheric River storm system will bring periods of heavy rain from late Tuesday into Thursday evening. Potential flooding impacts include the threat of significant and widespread urban roadway flooding, a high risk of major rock/mudslides, and rapid rises in creeks, streams, and rivers which will likely lead to swift water rescues. The recent burn scars will be at risk for debris flows, possibly damaging. These flooding impacts will likely lead to significant travel delays and road closures during this busy holiday travel period. * ADDITIONAL DETAILS... - Heavy rainfall with possible thunderstorms is expected with high rainfall rates, potentially exceeding one inch per hour during the peak of the event Tuesday night into Wednesday across favored south facing slopes and near thunderstorms. Another round of heavier rain and thunderstorms will be possible on Thursday. - http://www.weather.gov/safety/flood

* WHAT...South winds 25 to 35 mph with gusts up to 65 mph expected. * WHERE...Monterey Bay and the Big Sur Coast, Interior Monterey County and the Santa Lucia Range, San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, and Northern Salinas Valley/Hollister Valley and Carmel Valley. * WHEN...From 8 PM this evening to 10 AM PST Thursday. * IMPACTS...Damaging winds could down trees, snap power lines, and result in property damage. Widespread power outages are possible. Travel could be extremely difficult and hazardous, especially for high profile vehicles. Strong winds may move loose debris, result in minor damage property, and cause sporadic power outages. Travel could become difficult, especially for high profile vehicles. The combination of wind and moist soils will increase the risk for downed trees.

* WHAT...South winds 25 to 35 mph with gusts up to 65 mph expected. * WHERE...Western Sonoma County Hills. * WHEN...From 8 PM this evening to 10 AM PST Thursday. * IMPACTS...Damaging winds could down trees, snap power lines, and result in property damage. Widespread power outages are possible. Travel could be extremely difficult and hazardous, especially for high profile vehicles. Strong winds may move loose debris, result in minor damage property, and cause sporadic power outages. Travel could become difficult, especially for high profile vehicles. The combination of wind and moist soils will increase the risk for downed trees.

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Del Norte County, Humboldt County, Trinity County, Mendocino County, and Lake County. * WHEN...Through Friday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS... - Additional rounds of heavy rain expected through Friday night. An additional 3-6, locally up to 9 inches of total rain is possible through Friday. There will be breaks in the heavy precipitation, but heavy rain falling on already saturated ground will promote flooding impacts. - http://www.weather.gov/safety/flood

* WHAT...South to southeast winds 25 to 40 mph with damaging gusts up to 60 mph likely. * WHERE...Catalina and Santa Barbara Islands, Eastern Santa Monica Mountains Recreational Area, San Miguel and Santa Rosa Islands, Santa Clarita Valley, Santa Cruz and Anacapa Islands, and Western Santa Monica Mountains Recreational Area. * WHEN...Until 3 PM PST Thursday. * IMPACTS...Damaging winds are likely with this powerful Atmospheric River storm, with widespread downed trees and powerlines likely, as well as the potential for power outages and property damage. Travel will be difficult, especially for high profile vehicles. The combination of strong winds and moist soils will increase the risk for downed trees.

* WHAT...South to southeast winds 30 to 50 mph with damaging gusts up to 70 mph likely, except up to 80 mph in the mountains and foothills. * WHERE...All of San Luis Obispo and Santa Barbara counties, the mountains and foothills of Los Angeles and Ventura counties, and the Antelope Valley. * WHEN...Until 3 PM PST Thursday. * IMPACTS...Damaging winds are likely with this powerful Atmospheric River storm, with widespread downed trees and powerlines likely, as well as the potential for power outages and property damage. Travel will be difficult, especially for high profile vehicles. Mountain roadways and passes will be especially dangerous, including the busy Interstate 5 near the Grapevine. The combination of strong winds and moist soils will increase the risk for downed trees.