Historical shock anatomy and 90-day Brent/WTI scenario paths for a shipping chokepoint closure, anchored to empirical magnitude, spread, and decay behavior.
| Scenario | Definition | Magnitude | Half-life | Peak Spread | Brent Day 0 | Brent Day 90 |
|---|---|---|---|---|---|---|
| Low | Partial closure, quick resolution (days), SPR release. | +9.8% | 2.0 days | $5.24 | 109.84 | 100.00 |
| Base | Significant rerouting, resolved in weeks. | +17.5% | 6.5 days | $8.46 | 117.45 | 100.00 |
| High | Full closure, military conflict, resolved in months. | +62.9% | 287.0 days | $28.78 | 162.88 | 150.59 |
Scenario logic. The three cases map a partial closure, a sustained rerouting case, and a full chokepoint outage onto historically observed shock magnitudes, half-lives, and Brent-WTI spread blowouts.
Reversion profile. Low and Base paths decay rapidly toward the pre-event anchor of 100, while the High path still sits +50.6% above baseline by day 90.
Data hygiene. The half-life view excludes 4 unstable exponential-fit values above 1,000 days so the decay comparison remains interpretable.
All scenario paths are expressed on a normalized price base where 100 represents the pre-event anchor. Spreads remain interpretable as Brent minus WTI differentials.