In Contra Costa County, storm runoff comes fast and the water raises quickly in creeks. Residents and businesses lack time to prepare once a large storm is upon us.
The National Weather Service California Nevada River Forecast Center (CNRFC) produces several on-line products to inform the public on weather related issues.
Flash Flood Guidance Maps are one of these products. This provides a map of the central coast colored similar to other maps they produce such as the Quantitative Precipitation Forecast (QPF) map. The Flash Flood Guidance can be generally summarized as follows:
Flash Flooding can occur when we experience...
- Approximately 1 inch in one hour
- Approximately 2 inches in three hours
- Approximately 3 inches in six hours
Review the Flash Flood Guidance maps
and become familiar with other weather links. Prepare early if you live in a flood prone area.