Classification: no_prediction Confidence: Confidence remains high after multiple correct predictions and one significant false negative which has been addressed with a max coefficient adjustment. The system is waiting for the next rain event to validate the new coefficient.
No precipitation occurred in the Boxley basin today, resulting in no physics prediction generated and no empirical headline issued, while the gauge recorded a declining flow from the previous day's significant event.
| Metric | Predicted | Actual | Error |
|---|---|---|---|
| Peak CFS | N/A | 501 CFS | N/A |
| Total rise | — | 251.0 CFS | — |
| Band | Zone | Precip | Predicted Rise | Intensity |
|---|---|---|---|---|
Today's event was characterized by zero rainfall (0.0") across the Boxley basin. Consequently, the physics prediction engine generated no predicted peak, which is the correct behavior for a dry day. The actual gauge data shows a peak of 501.0 CFS at 01:00 local time, followed by a decline to 250.0 CFS by the end of the day. This flow is clearly the recession limb of the massive 1520 CFS flood event from June 8th, not a new runoff response to today's rain (which was nonexistent).
Since no physics prediction was issued and no empirical forecast headline was targeted for the Hailstone gauge today, the classification defaults to 'no_prediction'. There is no basis to evaluate prediction error or timing error because no prediction attempt was made for a non-event. The model correctly identified the absence of a triggering rainfall event.
Regarding calibration, no adjustments are recommended. The previous day's false negative (June 8th) already triggered a maximum +20% coefficient increase. Adjusting the coefficient further based on a dry day would be inappropriate, as the recession flow dynamics are distinct from the runoff generation mechanics calibrated by the response coefficient. The model should simply wait for the next rainfall event to validate if the new coefficient is sufficient.
No changes made.