SHADOW SEASON / D1 CONTEST RECEIPT

KATL · High ≥ 77°F

Atlanta, GA · 20261007 · 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	Oct 06 · 05:00 UTC
Observed day starts	Oct 07 · 05:00 UTC
Observed day ends	Oct 08 · 05:00 UTC
Unresolved contract voids	Oct 15 · 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 WeatherNext 2

IFS HRES versus IFS Ensemble

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

Locked forecasts

0% · NO50%YES · 100%

88%

78%

77%

75%

59%

MODEL	PROBABILITY	INITIALIZED UTC	RECEIVED UTC	CAPTURED UTC
AIFS	77%	Oct 05 · 18:00 UTC	Oct 06 · 01:28 UTC	Oct 06 · 01:28 UTC
EPS	78%	Oct 05 · 00:00 UTC	Oct 05 · 15:12 UTC	Oct 05 · 15:12 UTC
HRES	75%	Oct 05 · 00:00 UTC	Oct 05 · 07:31 UTC	Oct 05 · 07:31 UTC
ICON	59%	Oct 05 · 12:00 UTC	Oct 05 · 23:06 UTC	Oct 05 · 23:06 UTC
WN2	88%	Oct 05 · 12:00 UTC	Oct 05 · 23:06 UTC	Oct 05 · 23:06 UTC

Positions & reserved credits

YES MODEL	NO MODEL	QUANTITY	YES PRICE	YES RESERVED AT ENTRY	NO RESERVED AT ENTRY	YES / NO REALIZED P&L
WN2	AIFS	40	0.82110	32.84	7.16	+7.16 / -7.16

IFS HRES / IFS Ensemble: Gap below 4 percentage points.

The observation record

Finalized contract result: YES · 80°F · Oct 11 · 05:06 UTC

FIRST SEEN UTC	HIGH	SOURCE	OBSERVATION HOUR	TREATMENT
Oct 08 · 09:52 UTC	80°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:20261007:D1