What if a worldwide heatwave cripples power grids and outdoor labour?
A synchronized global heatwave is a gas-plus-grain squeeze: power-burn demand lifts the gas complex and EU TTF, ammonia-linked fertilizer follows, while heat-stressed crops push Wheat/Corn and food CPI. Rhymes with summer 2022, when European TTF gas spiked toward EUR300/MWh on heat and drought. Forward angle: today's larger US LNG export capacity tightens the transatlantic link, so a US heat dome now transmits to European energy faster than in prior episodes.
how we built this number — every step
The class rate is measured from our dated, sourced event library (decade-normalized Poisson — the full table is public at base_rates.json). The variant’s share within its class is the analyst’s editorial call, published so you can audit it. A wider range means thinner precedent. Full recipe: methodology · scored at Reality Check.
The butterfly cascade
How this trigger trickles across markets, left → right — the root shock, its first‑order moves, then the ripple effects. Drag any node; tap a market for its real price history.
Resolution timeline — how this probability is moving
Our model's odds (gold) over time vs the crowd's (Polymarket, blue), from the past toward the 1–3 years horizon. Each dot is a real macro event that nudged the probability — green pushed it up, red pushed it down. Tap a dot for the source. The gold path is an illustrative reconstruction anchored to today's estimate — real dated events, not a live re-estimate history.
What it would mean
If this plays out, it is a mixed shock. A simultaneous global heatwave cripples power grids and outdoor labor. The trigger decomposes into signed root‑shocks — Climate/crop supply ▲ · Natural gas ▲ — which propagate through our causal graph to the markets below.
If it happens — the markets it would move
Biggest moves first. Projected moves are cascade-model priors; hist A–B% = what comparable past events actually did (measured abnormal returns), and model prior · unmeasured marks markets with no analogue backing yet. Tap any market for its price history.
| Market | Class | Projected move | |
|---|---|---|---|
| 1 | Wheat WHEATon Hyperliquid 📈 chart | Commodity | ▲ +0.7% hist -0.23–+1.38% |
| 2 | Corn CORNon Hyperliquid 📈 chart | Commodity | ▲ +0.6% hist -0.47–+2.27% |
| 3 | Natural gas NGon Hyperliquid 📈 chart | Commodity | ▲ +0.6% hist -1.22–+0.55% |
| 4 | Semiconductors SMHon Hyperliquid 📈 chart | Equity | ▼ -0.1% hist -0.13–+0.15% |
Probable recommendation
Why we may diverge from history
Trust the cascade long on NG: realized -2.4% reflects 2025 metals/cocoa-squeeze windows, not power demand — a global heatwave is a direct cooling-load gas shock the off-channel analogue cluster mismeasures.
Historical precedent — what analogous events actually did
Across 40 analogous events (overlap‑weighted), as abnormal returns — market beta stripped, so it's the event's own effect, not the market backdrop. Shown at 20 days (persistent) and 5 days (immediate); ↺ fades = the two horizons disagree. Confidence = consistency × sample × significance.
| Asset | History says | Abnormal (20d · 5d) | Hit | n | Confidence | vs cascade |
|---|---|---|---|---|---|---|
| NG NG | SHORT | -1.3% · 5d -2.4% | 64% | 39 | 0.27 | ⚠ differs |
| Gold XAU | LONG | +1.2% · 5d -0.3% ↺ fades | 64% | 39 | 0.26 | · |
| CORN CORN | LONG | +1.8% · 5d -0.7% ↺ fades | 60% | 39 | 0.20 | ✓ matches cascade |
| 10y yield DGS10 | SHORT | -1bp · 5d -1bp | 60% | 40 | 0.15 | · |
| SMH SMH | LONG | +0.2% · 5d -0.8% ↺ fades | 58% | 39 | 0.14 | ⚠ differs |
| US dollar DXY | SHORT | -0.1% · 5d -0.2% | 51% | 40 | 0.02 | · |
| WHEAT WHEAT | LONG | +0.9% · 5d -0.1% ↺ fades | 42% | 39 | 0.00 | ✓ matches cascade |
| Volatility VIX | SHORT | -0.9% · 5d -0.9% | 49% | 39 | 0.00 | · |
| Bitcoin BTC | LONG | +3.9% · 5d -0.6% ↺ fades | 46% | 33 | 0.00 | · |
| High-yield credit HYG | LONG | +0.7% · 5d +0.1% | 47% | 37 | 0.00 | · |
Why this probability
Severe regional heatwaves recur, but truly simultaneous global grid failure within 1-3y is rarer. A base‑rate‑anchored prior, continuously scored against what actually happens — not a forecast.