KORD · High ≥ 74°F
Chicago, IL · 20260919 · 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 16 · 06:00 UTC |
| Observed day starts | Sep 19 · 06:00 UTC |
| Observed day ends | Sep 20 · 06:00 UTC |
| Unresolved contract voids | Sep 27 · 06:00 UTC |
1991–2020 ACIS daily normal, rounded at publication. Source: exact KORD ACIS daily maximum. Observing window uses local standard time in America/Chicago.
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 | 32% | Sep 15 · 18:00 UTC | Sep 16 · 01:26 UTC | Sep 16 · 01:26 UTC |
| EPS | 75% | Sep 15 · 00:00 UTC | Sep 15 · 15:08 UTC | Sep 15 · 15:08 UTC |
| HRES | 98% | Sep 15 · 12:00 UTC | Sep 15 · 22:21 UTC | Sep 15 · 22:21 UTC |
| ICON | 89% | Sep 15 · 12:00 UTC | Sep 15 · 19:31 UTC | Sep 15 · 19:31 UTC |
| WN2 | 95% | Sep 15 · 18:00 UTC | Sep 16 · 05:03 UTC | Sep 16 · 05:03 UTC |
Positions & reserved credits
The observation record
Finalized contract result: NO · 70°F · Sep 23 · 06:38 UTC
| FIRST SEEN UTC | HIGH | SOURCE | OBSERVATION HOUR | TREATMENT |
|---|---|---|---|---|
| Sep 20 · 09:17 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:KORD:20260919:D3