These data were from two separate days. Also, a seven hour rain gage accumulation estimate was compared to the corresponding STP product from one case.
Results indicate fairly large discrepancies between gage and radar data.
Possible strategies are presented to improve the accuracy of these products. Method Hourly rain gage data were obtained from California alert network gages in Del Norte, Humboldt, Mendocino, and Trinity Counties in northwest California. Storm totals were also obtained from cooperative observers in Shelter Cove and Fortuna, and from the National Weather Service gage in Eureka. Figure 1 shows the types and locations of the gages used in this study. These data were compared to the OHP and STP products from the KBHX radar by visual inspection of the four times magnified radar charts.