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SHADOW SEASON / D5 CONTEST RECEIPT

KORD · High ≥ 71°F

Chicago, IL · 20260925 · Settled

Simulation credits only. The probabilities below are locked entries; current forecasts cannot replace them.

The contract clock

MILESTONEUTC
PublishedSep 08 · 15:49 UTC
Forecast deadlineSep 20 · 06:00 UTC
Observed day startsSep 25 · 06:00 UTC
Observed day endsSep 26 · 06:00 UTC
Unresolved contract voidsOct 03 · 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 ICON

IFS Ensemble versus WeatherNext 2

Bye: IFS HRES. An eligible bye forecast still contributes to the common-case skill table.

Locked forecasts

0% · NO50%YES · 100%
AIFS
62%
ICON
33%
EPS
28%
HRES
27%
MODELPROBABILITYINITIALIZED UTCRECEIVED UTCCAPTURED UTC
AIFS62%Sep 19 · 18:00 UTCSep 20 · 01:31 UTCSep 20 · 01:44 UTC
EPS28%Sep 19 · 00:00 UTCSep 19 · 15:13 UTCSep 19 · 15:13 UTC
HRES27%Sep 19 · 12:00 UTCSep 19 · 19:36 UTCSep 19 · 19:43 UTC
ICON33%Sep 20 · 00:00 UTCSep 20 · 04:37 UTCSep 20 · 04:45 UTC

Positions & reserved credits

YES MODELNO MODELQUANTITYYES PRICEYES RESERVED AT ENTRYNO RESERVED AT ENTRYYES / NO REALIZED P&L
AIFSICON520.4735024.6227.38-24.62 / +24.62

IFS Ensemble / WeatherNext 2: Missing eligible forecast.

The observation record

Finalized contract result: NO · 64°F · Sep 29 · 06:24 UTC

FIRST SEEN UTCHIGHSOURCEOBSERVATION HOURTREATMENT
Sep 26 · 09:29 UTC64°FRCC-ACIS StnData24Provisional 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:20260925:D5