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Cossatot River — Daily Analysis: 2026-04-15

Classification: no_prediction Confidence: No prediction event provides no calibration feedback - model confidence remains unchanged at medium level

Event Summary

Light rainfall (0.26-0.38 inches) occurred late in the day with minimal river response (0.04 ft rise), but no prediction was generated to evaluate.

Prediction vs Actual

Metric Predicted Actual Error
Peak height N/A 2.34 ft N/A
Total rise 0.04 ft

Band Contributions

Band Precip Predicted Rise Intensity Moisture

Analysis

This event featured light rainfall concentrated in the final hour of the day, with QPE showing 0.26-0.38 inches across all bands. The gauge precipitation sensor recorded 0.45 inches, which aligns reasonably well with the QPE data. The river showed minimal response with only a 0.04 ft rise, suggesting the rainfall was either too light or too late in the day to generate significant runoff under dry antecedent conditions (7-day average of 0.15 inches).

Since no prediction was generated, there is no model performance to evaluate. The minimal river response is consistent with the dry moisture tier (0.5x multiplier) and light rainfall amounts. The flat hydrograph shape and negligible rise suggest this was below the threshold for meaningful hydrological response, which is appropriate given the dry conditions and modest rainfall totals.

This event provides limited calibration value since there was no prediction to compare against observed outcomes. The data appears consistent with expected behavior under dry conditions with light rainfall, so no coefficient adjustments are warranted.

Coefficient Adjustments

No changes made.

Notes

No prediction event provides no calibration feedback - model confidence remains unchanged at medium level

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