Classification: correct Confidence: Model performance remains strong in dry, low-intensity scenarios. The accurate prediction of near-baseline conditions reinforces confidence in the current calibration.
The model correctly predicted a near-baseline peak of 1.85 ft, closely matching the observed 1.84 ft peak on a very dry day with minimal rainfall.
| Metric | Predicted | Actual | Error |
|---|---|---|---|
| Peak height | 1.85 ft | 1.84 ft | +0.01 ft |
| Total rise | — | 0.02 ft | — |
| Band | Precip | Predicted Rise | Intensity | Moisture |
|---|---|---|---|---|
| 1 | 0.13" | 0.00 ft | LIGHT | VERY DRY |
| 2 | 0.33" | 0.00 ft | MODERATE | VERY DRY |
| 3 | 0.12" | 0.00 ft | LIGHT | VERY DRY |
| 4 | 0.18" | 0.00 ft | LIGHT | VERY DRY |
| 5 | 0.15" | 0.00 ft | LIGHT | VERY DRY |
Headline: No rise indicated by recent rainfall Settled outcome: None (reached None) LLM said headline was correct: True Notes: The empirical headline 'No rise indicated by recent rainfall' was borne out by the actual gauge outcome of only 0.02 ft rise.
Today's event featured minimal rainfall (0.12-0.33" across bands) under VERY DRY antecedent moisture conditions (7-day average 0.558"). The hydrograph remained flat with a rise of only 0.02 ft, consistent with the high infiltration capacity and low runoff efficiency expected in dry conditions.
The prediction of 1.85 ft peak was nearly identical to the actual peak of 1.84 ft, resulting in a negligible 0.5% magnitude error. This confirms that the current calibration coefficients, particularly the DRY moisture multiplier (0.5) and the band response factors, are appropriately suppressing the predicted response for low-intensity rainfall in dry conditions. The model successfully identified that the rainfall input was insufficient to generate significant runoff.
The timing error of 13.1 hours is noted but is less critical given the flat nature of the hydrograph and the absence of a distinct rising limb or peak. For near-baseline events, the exact timing of a non-existent peak is less informative than the correct assessment of magnitude. No adjustments are needed.
Predictions issued today: none archived as active; grading the end-of-day card (generated 2026-09-08T04:20:02.227726+00:00).
Grade-only mode: no adjustments suggested; calibration is fit offline.
Model performance remains strong in dry, low-intensity scenarios. The accurate prediction of near-baseline conditions reinforces confidence in the current calibration.