National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

*** IMPORTANT ***  Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.

Flash Flood Guidance

Flash flood guidance is defined as the average inches of rainfall for a given duration required to produce flash flooding in small streams.

 

CNRFC Flash Flood Guidance- Interactive Map Interface

Gridded flash flood guidance is available as overlays on an interactive map interface. Data is updated daily at 3:00 AM PST (4:00 AM PDT). Also, KML files are available for download and use in Google™ Earth.

    Flash Flood Guidance - Interactive Map Interface


Graphical Version

These graphics are updated daily at approximately 3:15 AM PST (4:15 AM PDT).

RFC Area
Time Duration
Entire CNRFC Area