Here are some internet resources where you can find information on weather conditions, river flows, and reservoirs that might be useful for watching the storm and its impacts from your computer.
If you have an internet resource that you think would be a useful addition to this page, please send me an email.
Be safe out there!
For weather and storm information
Radar
Check out the radar from the National Weather Service.
Satellite
Check out the Western satellite from NOAA here.
Atmospheric River Portal
Get current atmospheric river conditions and forecasts and more from the Atmospheric River Portal from Scripps and the Center for Western Water and Weather Extremes. (More atmospheric river information by clicking here.)
Weather, Highway, and Marine Conditions
This page at My Outdoor Buddy has many links to California and Oregon weather information including Weather Reports, Highways & Passes, Lake and Reservoir Levels, River Conditions, Coastal Waters Marine Forecasts and Conditions (including swell, wave height, interval, sea surface temperatures and surfing conditions) as well as Bar Cams and Tide Predictions all in one place.
Rainfall Maps
You can see a rainfall map for the last hour, six hours, 24 hours, or more at this website. Look at it statewide or by region.
Eight station index
Look at a graph of the Northern Sierra 8-station index here.
Five station index
Check out a graph of the San Joaquin 5-station index here.
The latest watches, warnings, and advisories
Get a list of all the watches, warnings and advisories for California at this National Weather Service website.
For river and stream conditions
California Nevada River Forecast Center
Check in here to find out which rivers are at monitor stage or flood stage. You can also look at observed or forecasted precipitation, temperatures, snow levels, freeze levels and more.
Advanced Hydrologic Prediction Service
This website from the National Weather Service has a wealth of information. Mouse over a particular gage to get a graph of the flow for the last four days plus the forecasted flows for the next five days. Precipitation data as well.
Flooding Map from ESRI with Social Media Links
Continuously updated US flooding information from the National Weather Service shows observed flooding locations and statistics, flood warning areas, as well as current precipitation. See the real-time effects of the flooding via social media posts.
River Stage Maps
At this CDEC website, you can display river stage maps for current hour and the past two hours for the North Coast, Upper Sacramento, Lower Sacramento, Russian, Central Coast, San Joaquin, or Truckee rivers.
Sacramento County Alert System
The Sacramento County’s ALERT system consists of 2 base stations, and 50 gauging stations. The purpose of the County’s ALERT website is to provide access to stage and rainfall information during storm events. Find streamflow, forecasts, and more here.
USGS Webcams
Check out webcams of the Eel, Truckee, and Merced rivers, plus San Pedro Creek at Goleta and Arroyo Seco near Pasadena.
Reservoir Conditions
Reservoir Conditions – Top of Conservation Conditions (Statewide)
Although it’s not an issue this year with the reservoirs drawn down low, this special variation of the standard DWR reservoir webpage shows the amount of storage available for flood control.
Reservoir Conditions (Individual)
Check out the effect of the storm on the reservoirs. Access an graph for each individual reservoir on this page. Note: data is not real-time; it is updated at midnight.
Flood Information
Print out a floodplain map
At this Department of Water Resources (DWR) website, you can display the latest floodplains in a web viewer. The data has been expanded to cover the floodplains to cover all counties in the State and to include 500-year floodplains. The 100-, 200-, and 500-year floodplains can be selected for display using this viewer. The web viewer allows users to view a particular area, identify their potential flood hazards, and print a floodplain map.
California Flood Preparedness Website
Plenty of information here on types of flooding, determining and reducing your flood risk and more.
Flood Preparedness from Ready.gov
Here’s the federal government’s website for flood preparedness.
Flood maps and diagrams
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