Seattle, WAHigh ≥ 63°F
Who takes which side?
Probabilities derived from each source’s mean and spread. Forecasts may have different initialization times.
Head-to-head preview
ILLUSTRATIVE · NOT EXECUTED50 contracts at the midpoint of these model probabilities. Each contract pays 1u to the winning side.
EPS +45.88u · HRES −45.88u
These are current forecast comparisons, not locked entries. No credits have been committed. Read the proposed policy →
Probability history
Reconstructed from archived summary forecasts using a shared lead-dependent Gaussian error model. Times are initializations, not verified release times.
Forecasts & evidence
| MODEL | YES | MEAN | SPREAD σ | INITIALIZATION UTC | BRIER ↓ |
|---|---|---|---|---|---|
| IFS Ensemble | 15% | 58.2°F | 4.1°F | 2026-10-19 00:00 | Pending |
| NWS forecast | 14% | 57.0°F | 5.2°F | 2026-10-19 03:00 | Pending |
| ICON | 6% | 53.1°F | 6.1°F | 2026-10-19 00:00 | Pending |
| National Blend | 4% | 55.0°F | 4.4°F | 2026-10-19 06:00 | Pending |
| WeatherNext 2 | 4% | 55.2°F | 4.1°F | 2026-10-19 00:00 | Pending |
| AIFS Single | 3% | 53.2°F | 5.0°F | 2026-10-19 00:00 | Pending |
| IFS HRES | 2% | 50.4°F | 5.8°F | 2026-10-19 00:00 | Pending |
Spread is the standard deviation used in the probability approximation. It is not a measured confidence rating. Brier here scores the latest recorded snapshot, not a league deadline.
High ≥ 63°F · KSEA
Daily temperature props settle on the ACIS official station record. Inclusive and strict thresholds retain their exact meanings. Provisional observations do not replace the settlement record.
WP-KSEA-20261024-TMAX-GE63
Opened Oct 17 · 07:45 UTC
Original listing: Seattle runs hot-for-here: 63°F+ · Sat Oct 24
Original prop, full history & receipt ↗