National Weather Service United States Department of Commerce

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Customize Your Weather.gov

LOADING...
NWS Weather & Hazards

Display:
Opacity:
Display:
Opacity:
Loop:
Speed:
Display:
Opacity:
Display:
Opacity:
All Current & Historical Fire Perimeters
2025 2021 2017
2024 2020 2016
2023 2019 2015
2022 2018 2014
Time:
Display:
Elements:
Provider:
Density:
Hover for Information
Font:
Data Filters
Gust (mph):
Temp ( ° ):
Elev (ft):
RH (%):
Precip (in):
Data Aggregated by Synoptic
US States
US Counties
NWS Forecast Offices
River Forecast Offices
NWS Public Zones
NWS Fire Zones
NWS Marine Zones
Geographic Area Coord. Centers (GACC)
BIA Tribal Lands
Watershed Boundaries (HUC 10)
USFS Avalanche Centers
Wildland Fire Dispatch Areas
NWS Hazards & Warnings
Layer Not Loaded
NWS Radar
Layer Not Loaded
MesoWest Surface Observations
Layer Not Loaded
NWS Forecasts
Layer Not Loaded
Precipitation Analysis
Layer Not Loaded
Wildfire Information
Layer Not Loaded