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