Home / Prediction Markets / Science / M5.5+ Earthquake Count for July 14-19: Above Twelve Leads M5.5+ Earthquake Count for July 14-19: Above Twelve Leads ☆ Watch Paper Trade View on Polymarket → Share SR Sofia Renard Climate & Science Analyst Embed NEW Embed this market Full Compact Copy Published July 18, 2026 6 min read Lines Verdict YES at 80% implied probability SLIGHT LEAN TO ABOVE TWELVE: Historical USGS baselines favor more than twelve M5.5+ events in a six-day window, anchoring the market at 54.5%. Market probability: 54.5%. 80% Market Probability 1h +0.0% 24h +34.5% Trend Moderate (51/100) Volume $59.2K $15.7K in 24h Liquidity $54.9K Moderate depth Time Left 22 hours Resolves Jul 19 59K Vol. Jul 19, 2026 1H 6H 1D 1W 1M ALL Select lines to display >12 $11K Vol. 80% Yes 79.5¢ No 20.5¢ 12 $2K Vol. 19% Yes 18.5¢ No 81.5¢ 11 $2K Vol. 3% Yes 3.4¢ No 96.6¢ 10 $4K Vol. 1% Yes 0.7¢ No 99.4¢ 7 $8K Vol. 0% Yes 0.2¢ No 99.8¢ 9 $7K Vol. 0% Yes 0.2¢ No 99.8¢ Six days of seismic data, one tight window, and a market sitting just above a coin flip. The >12 outcome for M5.5+ earthquakes between July 14 and July 19 carries a 54.5% implied probability, meaning traders see this as a slight lean toward elevated seismic activity but are far from certain. The window closes July 19 at 23:59 UTC, and the USGS real-time earthquake catalog is the arbiter. The market question asks how many magnitude 5.5 or above earthquakes occur globally between July 14 and July 19, 2026. The >12 position trades at $0.55. The field of alternatives, including 12, 11, 10, 9, 8, 7, and ≤6, collectively trade against it at $0.46. Total volume stands at $53,205, with $10,334 moving in the last 24 hours. How This Earthquake Frequency Contract Works Resolution depends on the final USGS count of M5.5+ events logged in the catalog for the July 14 through July 19 window. The USGS National Earthquake Information Center maintains the authoritative global record. Every confirmed M5.5 or above event worldwide counts. The >12 position ($0.55, 54.5%) pays out if the USGS catalog records thirteen or more M5.5+ earthquakes in the window.The 12 position prices a precise count of exactly twelve qualifying events.The 11, 10, 9, 8, 7, and ≤6 positions each price progressively quieter seismic weeks. A quieter-than-average seismic period wins the NO-equivalent positions. Historically, the USGS records roughly fifteen to twenty M5.5+ earthquakes per week globally. A week landing at twelve or below would represent a notably subdued stretch. Subduction zone activity along the Pacific Ring of Fire, particularly in the western Pacific and South America, drives most weekly totals into the mid-to-high teens. The below-twelve cluster wins when no major regional swarm occurs and background seismicity stays suppressed across all active zones simultaneously. Momentum and Market Signals Sponsored Partner Where the Price Is and What Is Driving It The momentum composite is soft but slightly constructive for >12. The 1-hour change is flat at 0.0%, the 24-hour change is up 1.0%, and the trend score sits at 40 out of 100. This is not conviction trading. It reads as a market waiting on the final USGS data to confirm or deny the count rather than traders loading up on directional conviction. The modest 24-hour uptick likely reflects partial event counts becoming visible in the real-time catalog as the window progresses. Total volume at $53,205 is thin. The $10,334 in 24-hour volume shows some recent interest, and $34,281 in liquidity provides a reasonable order book for a market this size. But thin volume means a single large position or a USGS catalog update confirming several events in quick succession could move the price sharply before July 19 closes. Traders should treat this price as dynamic, not settled. The 24-hour price increase of 1.0% connects to the mid-window seismic catalog update, where confirmed event counts become clearer.The flat 1-hour signal suggests no single large earthquake has repriced the contract in the most recent period.A trend score of 40 reflects genuine uncertainty: neither side has built dominant flow.Volume below $100,000 total means price can gap on any surprise USGS confirmation of a swarm or cluster.The $34,318 liquidity pool is adequate but not deep enough to absorb sharp directional moves without slippage. Lines Analysis: USGS Data Versus Historical Baselines The USGS global earthquake catalog consistently records M5.5+ events at a pace that makes >12 in a six-day window the statistically expected outcome. The global long-run average runs between two and three such events per day. Over six days, that baseline produces twelve to eighteen events. The >12 threshold aligns almost exactly with the lower half of the typical range, which explains why the market has converged near 54-55% rather than at a higher probability. The data is not screaming either direction. What makes the lower counts real is the uneven distribution of seismic energy. The Ring of Fire can go through brief lulls when no major subduction zone is in an active phase. A week where the Tonga Trench, the Aleutians, the Philippines, and the Chilean coast all stay quiet simultaneously can push a seven-day total below twelve. That scenario is not common, but it happens several times per year. The market is pricing that real-world variability. A confirmed cluster of M5.5+ events in the western Pacific before July 19 would push the >12 probability above 70% quickly.A USGS catalog update showing the running total already at ten or eleven with less than a day remaining would compress uncertainty sharply.Any M6.5 or above earthquake tends to trigger aftershock sequences that add multiple M5.5+ events rapidly, which strongly favors >12.Absence of a major triggering event through July 18 would shift probability weight toward the 10-12 range positions.The related market, How many 7.0 or above earthquakes in 2026, at 46%, signals that the broader trading community sees elevated but not exceptional global seismicity this year. The $53,205 in total volume confirms this is a specialized, lower-liquidity market. The data slightly favors >12 given historical baselines, but the six-day window and the tight threshold keep uncertainty real. The USGS real-time catalog is the only thing that matters from here. LINES VERDICT SLIGHT LEAN TO ABOVE TWELVE Historical USGS weekly baselines put the typical M5.5+ count comfortably above twelve, and that statistical anchor is what has nudged the market to 54.5%. The window is nearly closed, which means the catalog count is close to final. What the market says: A 54.5% implied probability reflects a genuine statistical lean toward elevated seismic activity, not strong conviction. With the July 19 resolution hours away, the price will track directly with the USGS running total and could move sharply in either direction on a catalog update. Key unknown: The single most important input is the current USGS M5.5+ count for July 14 through July 18. If that number is already at eleven or twelve before July 19 opens, the outcome is nearly decided. If it is at eight or nine, both sides remain live. Frequently Asked QuestionsWhat does the 54.5% probability mean for this earthquake market?The USGS catalog recording more than twelve M5.5+ earthquakes between July 14 and July 19 has a 54.5% implied probability. That reflects a slight statistical lean toward elevated seismic activity based on historical weekly baselines.What does it mean to hold one of the lower-count positions like 10 or 11?Holding a position at 10, 11, or 12 pays out only if the USGS final catalog confirms that exact count of M5.5+ events in the window. A suppressed week across the Pacific Ring of Fire is required for those to resolve.What single event would most sharply reprice this contract?A magnitude 6.5 or above earthquake anywhere on the Ring of Fire would likely trigger aftershocks that push the M5.5+ total above twelve quickly, moving the >12 probability well above 70%.When does this market resolve?Resolution occurs at 2026-07-19 23:59 UTC. The USGS National Earthquake Information Center's final confirmed count of M5.5+ global earthquakes for the July 14-19 window determines the outcome.Is the $53,205 total volume enough to trust this market's price?Volume below $100,000 means thin liquidity. The price can move sharply on a USGS catalog update confirming new events. Treat the 54.5% as a directional signal, not a settled probability.How is the Smart Money Index calculated?We aggregate the live positions of the top 50 Polymarket whales (ranked by 30-day tracked volume) into one composite reading per market. It refreshes every hour. The percentage shows how many of those whales hold YES versus NO; the net dollar position shows the cohort's directional exposure in dollars.What is a convergence signal?A convergence event fires when three or more tracked wallets buy the same outcome on the same market within a four-hour window. We surface these in the activity feed and the VIP digest.Is Lines a market operator?No. Lines is an editorial and data product. We do not operate prediction markets, custody funds, or accept trades. All trade flows deep-link to Polymarket via our affiliate code. Probabilities shown are market-implied and not predictions or recommendations. What Could Shift These Probabilities? Pacific Cluster Confirms >12 A magnitude 6.5 or above event on the western Pacific subduction zones triggers multiple M5.5+ aftershocks before July 19, pushing the USGS count well above twelve. The >12 probability jumps to 75% or higher as the catalog confirms the sequence. This is the most common path given baseline seismicity rates. Ring of Fire Goes Quiet All major subduction zones, including Tonga, the Aleutians, and Chile, remain suppressed through July 19. The USGS catalog closes the window at ten or eleven confirmed M5.5+ events. This scenario happens several times per year but requires simultaneous lulls across multiple seismically active regions, which is statistically unlikely in a six-day window. Exact Count Positions Gain Ground If the USGS running total sits at eleven with several hours remaining on July 19, positions at 11 and 12 gain sharp probability weight. A quiet final day would collapse the >12 probability rapidly. Traders holding the exact-count positions would see strong gains in this narrow scenario as the window closes without additional confirmed events. Major Subduction Earthquake Triggers Swarm A magnitude 7.5 or above event anywhere along the Cascadia, Japan Trench, or South American subduction zones could produce ten or more M5.5+ aftershocks within hours. The USGS count would race past twelve before the window closes, resolving the >12 contract decisively and making every lower-count position worthless simultaneously. Key macro factor: Global seismicity in 2026 shows no documented anomaly from baseline tectonic rates, meaning historical USGS averages remain the best available guide for this weekly count market. Market Timeline Jul 14, 12:52 AM Market Created Jul 14, 12:55 AM Market Opened 11:59 PM Market Resolution Place paper trade No real money × How many 5.5 or above earthquakes July 14 - July 19? Outcome >12 · 80% 12 · 19% 11 · 3% 10 · 1% 7 · 0% 9 · 0% ≤6 · 0% 8 · 0% YES $0.80 NO $0.21 Stake (USD) $100 $500 $1,000 $5,000 Pick a market to see how many shares you would hold. 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