SHADOW SEASON / D1 CONTEST RECEIPT

KATL · High ≥ 81°F

Atlanta, GA · 20260925 · 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 24 · 05:00 UTC
Observed day starts	Sep 25 · 05:00 UTC
Observed day ends	Sep 26 · 05:00 UTC
Unresolved contract voids	Oct 03 · 05:00 UTC

1991–2020 ACIS daily normal, rounded at publication. Source: exact KATL ACIS daily maximum. Observing window uses local standard time in America/New_York.

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

0% · NO50%YES · 100%

77%

48%

25%

14%

MODEL	PROBABILITY	INITIALIZED UTC	RECEIVED UTC	CAPTURED UTC
AIFS	14%	Sep 23 · 18:00 UTC	Sep 24 · 01:35 UTC	Sep 24 · 01:35 UTC
EPS	77%	Sep 23 · 00:00 UTC	Sep 23 · 15:11 UTC	Sep 23 · 15:11 UTC
HRES	48%	Sep 23 · 12:00 UTC	Sep 23 · 19:21 UTC	Sep 23 · 19:21 UTC
ICON	25%	Sep 24 · 00:00 UTC	Sep 24 · 04:27 UTC	Sep 24 · 04:27 UTC
WN2	9%	Sep 23 · 18:00 UTC	Sep 24 · 04:58 UTC	Sep 24 · 04:58 UTC

Positions & reserved credits

YES MODEL	NO MODEL	QUANTITY	YES PRICE	YES RESERVED AT ENTRY	NO RESERVED AT ENTRY	YES / NO REALIZED P&L
HRES	AIFS	37	0.31070	11.50	25.50	-11.50 / +11.50
ICON	WN2	40	0.16990	6.80	33.20	-6.80 / +6.80

The observation record

Finalized contract result: NO · 77°F · Sep 29 · 05:21 UTC

FIRST SEEN UTC	HIGH	SOURCE	OBSERVATION HOUR	TREATMENT
Sep 26 · 09:29 UTC	77°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:KATL:20260925:D1