Downstream Forecast Reliability
The downstream point at Newport shows a similar trend for the high flow events. But at Newport the forecast reliability is best between 48 and 84 hours - later than at Williamsburg.
Question
Why would the best forecast reliability occur later at Newport than at Williamsburg? (Choose the best answer.)
The correct answer is b.
QPF input results in more reliable hydrologic forecasts. But the positive impact of QPF takes longer in the downstream point. So the best forecast reliability occurs later at the downstream point in Newport.