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Cossatot River — Daily Analysis: 2026-06-08

Classification: no_prediction Confidence: Model confidence remains stable. The failure to predict the midnight rise is not an error in the rainfall-response coefficients, but rather a limitation in handling recession/continuation phases without new precipitation inputs.

Event Summary

The predictor generated no output today; however, a 1.44 ft sharp rise occurred at the start of the day with zero QPE inputs and zero gauge precipitation, likely representing residual runoff from the previous saturated event.

Prediction vs Actual

Metric Predicted Actual Error
Peak height N/A 5.42 ft N/A
Total rise 1.44 ft

Band Contributions

Band Precip Predicted Rise Intensity Moisture

Analysis

The prediction engine reported 'None' for the predicted peak, triggering a 'no_prediction' classification. Despite the lack of a prediction, the gauge recorded a significant 1.44 ft rise to 5.42 ft at midnight. Crucially, all QPE bands reported 0.00" for the entire 24-hour period, and the gauge precipitation sensor recorded 0".

This event signature (sharp rise, no rain) is consistent with the tail end of a large hydrograph. The previous event (June 7) involved heavy rainfall across all bands and saturated conditions, peaking at 6.24 ft later that evening. The midnight rise on June 8 appears to be part of that same continuous hydrologic response, potentially the final peak or a secondary hump before recession, rather than a new rainfall-driven event. Since the predictor did not generate a value, and there was no new rainfall to trigger a standard forecast, no coefficient adjustments can be made based on rainfall-response relationships. The system correctly identified no new precipitable input, though the lack of a 'quiet day' prediction suggests the recession phase of the prior event was not modeled as a standalone prediction target.

Coefficient Adjustments

No changes made.

Notes

Model confidence remains stable. The failure to predict the midnight rise is not an error in the rainfall-response coefficients, but rather a limitation in handling recession/continuation phases without new precipitation inputs.

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