In effect from Thursday, Jan 01 2026 1:33 AM - Thursday, Jan 01 2026 10:00 PM
Issued by NWS Hanford CA
What:
Flash flooding caused by excessive rainfall continues to be
possible.
Where:
A portion of central California, including the following
areas, Frazier Mountain Communities, Grapevine, Indian Wells
Valley, Mojave Desert, Mojave Desert Slopes, Piute Walker Basin
and Tehachapi.
When:
Through this evening.
Impacts:
Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Low-water crossings may be flooded. 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.
Instructions: You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
Areas Impacted:
Piute Walker Basin
Tehachapi
Grapevine
Frazier Mountain Communities
Indian Wells Valley
Mojave Desert Slopes
Mojave Desert
7294bb17024478ccb88268dcd51bc7d3855dbb27.001.1
Flood Watch
In effect from Thursday, Jan 01 2026 12:17 AM - Thursday, Jan 01 2026 10:00 PM
Issued by NWS Los Angeles/Oxnard CA
What:
Flooding caused by excessive rainfall continues to be
possible.
Where:
A portion of southwest California, including the following
areas, Calabasas and Agoura Hills, Central Ventura County Valleys,
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,
Malibu Coast, Northern Ventura County Mountains, Ojai Valley,
Palos Verdes Hills, Santa Barbara County Interior Mountains, Santa
Barbara County Southeastern Coast, Santa Barbara County
Southwestern Coast, Santa Clarita Valley, Santa Susana Mountains,
Santa Ynez Mountains Eastern Range, Santa Ynez Mountains Western
Range, Southeastern Ventura County Valleys, 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 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. Low-water
crossings may be flooded. Debris flow are possible near recent
burn scars. There is a high risk of rock and mudslides in the
canyons.
Additional Details:
- A strong winter storm will bring moderate to heavy rainfall
to the area Wednesday night and Thursday. Given the
antecedent conditions from last week's rain, the forecast
rainfall totals and intensities could generate some
significant hydrologic impacts.
- http://www.weather.gov/safety/flood
Instructions: You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
Areas Impacted:
Santa Clarita Valley
Santa Barbara County Southwestern Coast
Santa Barbara County Southeastern Coast
Santa Ynez Mountains Western Range
Santa Ynez Mountains Eastern Range
Santa Barbara County Interior Mountains
Ventura County Beaches
Ventura County Inland Coast
Lake Casitas
Ojai Valley
Central Ventura County Valleys
Malibu Coast
Los Angeles County Beaches
Palos Verdes Hills
Los Angeles County Inland Coast including Downtown Los Angeles
Western Santa Monica Mountains Recreational Area
Eastern Santa Monica Mountains Recreational Area
Calabasas and Agoura Hills
Western San Fernando Valley
Eastern San Fernando Valley
Southeastern Ventura County Valleys
Santa Susana Mountains
Southern Ventura County Mountains
Northern Ventura County Mountains
Interstate 5 Corridor
Western San Gabriel Mountains and Highway 14 Corridor
Eastern San Gabriel Mountains
Western Antelope Valley Foothills
Eastern Antelope Valley Foothills
Los Angeles County San Gabriel Valley
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Flood Watch
In effect from Wednesday, Dec 31 2025 10:00 PM - Thursday, Jan 01 2026 10:00 PM
Issued by NWS San Diego CA
What:
Flooding caused by excessive rainfall continues to be
possible.
Where:
A portion of Southwest California, including the following
areas, Orange County Coastal Areas, Orange County Inland Areas,
San Bernardino County Mountains, San Bernardino and Riverside
County Valleys-The Inland Empire and Santa Ana Mountains and
Foothills.
When:
Through 10 PM 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. Low-water
crossings may be flooded. Minor flooding and debris flows possible
in and below recent burn scars.
Additional Details:
- A warm low pressure system from the southwest will bring
periods of moderate to locally heavy precipitation tonight
through Thursday evening. The heaviest showers are likely to
occur Thursday morning. High soil moisture from last week's
heavy rainfall and will exacerbate the flooding threat in the
watch area.
- https://www.weather.gov/safety/flood
Instructions: You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
Be alert in the mountains for rockslides and rocks in the road.
Areas Impacted:
San Bernardino and Riverside County Valleys-The Inland Empire
San Bernardino County Mountains
Santa Ana Mountains and Foothills
Orange County Coastal
Orange County Inland
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Flood Watch
In effect from Saturday, Jan 03 2026 10:00 AM - Monday, Jan 05 2026 4:00 PM
Issued by NWS Reno NV
What:
Flooding caused by rain and snowmelt is possible.
Where:
A portion of northeast California covering the following
areas, Lassen, Eastern Plumas and Eastern Sierra Counties,
including the Susan River near Susanville, and the Middle Fork
Feather River near Portola.
When:
From Saturday morning through Monday 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. Rockfalls are also possible in
areas of steep terrain. Minor flooding is currently forecast for
the Susan River on Saturday, January 3rd, and the Middle Fork
Feather River is currently forecast to reach action stage by
Sunday, January 4th. However, greater than expected rainfall
and/or delayed transition to snowfall could easily push the Susan
and the Middle Fork Feather River higher. Slow rises and high
flows are also expected on the Pit River near Canby.
Additional Details:
- Enhanced runoff and sediment transport are likely below
recent burn areas, but debris flows are not expected. The
watch may be extended depending on how much additional
rainfall we get before the snow levels drop.
- For river forecast updates: https://www.cnrfc.noaa.gov
For flood safety information:
http://www.weather.gov/safety/flood
Instructions: You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
Areas Impacted:
Lassen-Eastern Plumas-Eastern Sierra Counties
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Flood Watch
In effect from Friday, Jan 02 2026 4:00 PM - Sunday, Jan 04 2026 10:00 PM
Issued by NWS Eureka CA
What:
Flooding caused by excessive rainfall is possible.
Where:
A portion of northwest California, including the following
areas, Mendocino Coast, Northeastern Mendocino Interior, Northern
Humboldt Coast, Northern Humboldt Interior, Northern Lake,
Northwestern Mendocino Interior, Southeastern Mendocino Interior,
Southern Humboldt Interior, Southern Lake, Southern Trinity,
Southwestern Humboldt and Southwestern Mendocino Interior.
When:
From Friday afternoon through Sunday evening. Additional
heavy rainfall will be possible Sunday through early next week.
Impacts:
There will be an increased risk of rock and land slides
along roadways. 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. Storm drains and ditches may
become clogged with debris.
Additional Details:
- Widespread moderate to heavy rain from two consecutive strong
weather systems will produce 2-4 inches of rainfall Friday
afternoon through late Sunday.
- http://www.weather.gov/safety/flood
Instructions: You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
