How many 6.5 or above earthquakes August 3 - August 9?

Platform comparison

Market context

A magnitude 6.5 earthquake in this window would be counted by the USGS total, and the market settles on the number of qualifying events between 3 August and 9 August under the USGS search parameters. The crowd is already pricing a very high chance of at least one such quake, which is consistent with recent activity: a worldwide summary on 9 August showed no magnitude 6 or higher quakes in the prior 24 hours, but the same period has still seen several moderate events, reminding traders that the count can move quickly if a single large rupture is added later to the catalogue.[1]

Historically, the cleanest analogue for reading this market is the frequency of global M6.5+ earthquakes in a single week, not the headline severity of any one event. In 2026, the USGS significant-earthquakes listings show multiple large shocks already recorded this year, including a major Mindanao event and other M6+ entries, so a 95% implied chance of *some* qualifying quake is plausible rather than extreme. On Polymarket, that probability is usually shown directly; on Kalshi, Smarkets, and Betfair, the same view is more often expressed through price/decimal odds, with fees and access varying by venue and KYC reach, so the apparent “cost” of the same view can differ even when the underlying forecast is identical.[3][4][7]

The main catalyst for traders is USGS catalogue lag: a substantial quake can occur during the window but only appear in the official search results after manual review, so the live market can understate the final count until the feed is updated. The other practical watchpoint is whether late-week aftershocks or a separate offshore event gets upgraded to 6.5 or above, since one additional revision is enough to shift a market priced at 95% from “almost certain” to “certain.” Broadly, the higher the number of weak-to-moderate global events, the more likely one of them is later re-estimated into the qualifying band.[1][7]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares How many 6.5 or above earthquakes August 3 - August 9? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

UK Frequently Asked Questions

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Polymarket vs Betfair Exchange: which is better for UK prediction trading?

Betfair Exchange offers UKGC regulation, GBP settlement, and potentially tax-free winnings — but focuses on sports and politics only. Polymarket has deeper liquidity, 0% platform fee, global event coverage, and crypto/geopolitical markets Betfair doesn't offer. For UK traders: Betfair for regulated GBP sports markets; Polymarket for broader, global prediction events.

Is Kalshi available in the UK?

Kalshi is a US CFTC-regulated prediction exchange. UK residents can create accounts but must use USD and US payment methods. Kalshi's product range overlaps with Polymarket but with lower liquidity on most contracts. For UK traders, Polymarket typically offers better prices due to higher global volume.