Named storm forms before hurricane season?
Overestimating short-term impact (Amara's Law). AI estimates 39% vs market's 52%, suggesting the market overprices this outcome.
Alpha Opportunity
Alpha Thesis
We believe the Polymarket contract for a named storm forming before the June 1 hurricane season is overvalued at 52%, with our estimate at 30%. Historical data shows pre-season Atlantic storms occur roughly once every 4 years — 43 storms since 1851 in the Jan-May window (base rate 24.6%). Elevated SSTs push this to ~30%, but the 2015-2021 anomalous 7-year streak has inflated market expectations well beyond justified levels.
📐Key Metrics
Key Findings
- Long-Term Base Rate: 24.6% — 43 pre-season storms in 175 years of records. This is the most reliable data point.
- Warm Ocean Adjustment: +5% — Above-normal SSTs in 2026 increase probability modestly, not dramatically.
- 2015-2021 Was Anomalous — 7 consecutive years of pre-season storms was unprecedented. Regression to mean is expected.
- NHC Starts Monitoring May 15 — Even the National Hurricane Center doesn't begin regular outlooks until 2 weeks before season.
- No Pre-Season Storm Yet — As of March 16, no tropical development. That eliminates ~3 months of the pre-season window.
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Alpha Quality Factors
Criteria that determine how exploitable this mispricing is
Human Bias Detected
Cognitive biases creating this alpha opportunity
The crowd may lack specialized knowledge that narrows the true probability range.
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Market Data
Position Sizing
Kelly Criterion (per $1,000 bankroll)