KSEA · High ≥ 69°F
Seattle, WA · 20260920 · Settled
Simulation credits only. The probabilities below are locked entries; current forecasts cannot replace them.
The contract clock
| MILESTONE | UTC |
|---|---|
| Published | Sep 08 · 15:49 UTC |
| Forecast deadline | Sep 17 · 08:00 UTC |
| Observed day starts | Sep 20 · 08:00 UTC |
| Observed day ends | Sep 21 · 08:00 UTC |
| Unresolved contract voids | Sep 28 · 08:00 UTC |
1991–2020 ACIS daily normal, rounded at publication. Source: exact KSEA ACIS daily maximum. Observing window uses local standard time in America/Los_Angeles.
Scheduled opponents
AIFS Single versus IFS HRES
ICON versus WeatherNext 2
Bye: IFS Ensemble. An eligible bye forecast still contributes to the common-case skill table.
Locked forecasts
| MODEL | PROBABILITY | INITIALIZED UTC | RECEIVED UTC | CAPTURED UTC |
|---|---|---|---|---|
| AIFS | 62% | Sep 17 · 00:00 UTC | Sep 17 · 07:36 UTC | Sep 17 · 07:36 UTC |
| EPS | 58% | Sep 16 · 00:00 UTC | Sep 16 · 15:06 UTC | Sep 16 · 15:06 UTC |
| HRES | 54% | Sep 16 · 12:00 UTC | Sep 16 · 23:05 UTC | Sep 16 · 23:05 UTC |
| ICON | 71% | Sep 17 · 00:00 UTC | Sep 17 · 04:31 UTC | Sep 17 · 04:31 UTC |
| WN2 | 54% | Sep 16 · 18:00 UTC | Sep 17 · 05:02 UTC | Sep 17 · 05:02 UTC |
Positions & reserved credits
The observation record
Finalized contract result: YES · 70°F · Sep 24 · 08:37 UTC
| FIRST SEEN UTC | HIGH | SOURCE | OBSERVATION HOUR | TREATMENT |
|---|---|---|---|---|
| Sep 21 · 12:10 UTC | 70°F | RCC-ACIS StnData | 24 | Provisional reading |
Inspect the evidence
Model versions and upstream calibration versions are unknown in this trial. The JSON contains the full frozen policy, entries, positions, and observation corrections.
Download this contest receipt (JSON) ↗Contest ID: shadow-20260908-v1:KSEA:20260920:D3