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SHADOW SEASON / D1 CONTEST RECEIPT

KBOS · High ≥ 72°F

Boston, MA · 20260920 · 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 19 · 05:00 UTC
Observed day startsSep 20 · 05:00 UTC
Observed day endsSep 21 · 05:00 UTC
Unresolved contract voidsSep 28 · 05:00 UTC

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

Scheduled opponents

IFS Ensemble versus ICON

WeatherNext 2 versus IFS HRES

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

Locked forecasts

0% · NO50%YES · 100%
HRES
14%
EPS
4%
ICON
<1%
MODELPROBABILITYINITIALIZED UTCRECEIVED UTCCAPTURED UTC
AIFS8%Sep 18 · 18:00 UTCSep 19 · 01:33 UTCSep 19 · 01:33 UTC
EPS4%Sep 18 · 00:00 UTCSep 18 · 11:07 UTCSep 18 · 11:07 UTC
HRES14%Sep 18 · 12:00 UTCSep 18 · 22:28 UTCSep 18 · 22:28 UTC
ICON<1%Sep 19 · 00:00 UTCSep 19 · 04:23 UTCSep 19 · 04:23 UTC

Positions & reserved credits

YES MODELNO MODELQUANTITYYES PRICEYES RESERVED AT ENTRYNO RESERVED AT ENTRYYES / NO REALIZED P&L
No positions have been opened for this contest.

IFS Ensemble / ICON: Gap below 4 percentage points.

WeatherNext 2 / IFS HRES: Missing eligible forecast.

The observation record

Finalized contract result: NO · 63°F · Sep 24 · 05:30 UTC

FIRST SEEN UTCHIGHSOURCEOBSERVATION HOURTREATMENT
Sep 21 · 09:04 UTC63°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:KBOS:20260920:D1