WeatherMulti-outcomeExpires Jan 13, 2026Closed
Creator

Will fewer than 30 tornadoes occur in the United States in December?

Probability

100¢

1h

+0.0pp

24h

+1.3pp

24h Vol

$0.00

Liquidity

$0.00

Historical archiveResolved YES

Orrery restored this market from Polymarket's closed-market records. Treat the numbers below as last-known market context, then verify the resolution source before citing the outcome.

How Orrery handles status →

Research loop

Inspect detail

Read the move, holders, recent trades, source, and resolution risk before saving anything.

MarketsDetailWatchlistAlertBrief

Canonical status

confidence: medium

Source status (Polymarket)

active · closed · uma=resolved

Derived status (Orrery)

RESOLVED YES

Reason

Upstream marked the market closed/settled with YES price dominant.

The derived status is computed from the source flags plus the live YES price, so a market trading near a rail can read as PRICE-PINNED while upstream is still active. That isn't the same as resolved.

Resolution & Risk

LOW risk
End date
Jan 13, 2026
UMA status
resolved
Resolution source
Primary
to the number of tornadoes recorded in the United States during the specified month, based on the monthly count publishe
Link
ncei.noaa.gov
Type
Ambiguous wording
Confidence
extracted · low
Market type
Multi-outcome (neg-risk)
  • Part of a multi-outcome event (neg-risk): only one market can resolve YES.
Share risk cardRead full market rules on Polymarket

Probability (last 7 days)

+0.4pp 7d
No price history available
updated 13:15:00 UTC·src:Polymarket CLOB·snap:snap_2026-06-04T13-15Z

Why did it move?

Structured · 2 factors
  • 01
    Price move

    Up 1pp over 24h

    Now 100¢; flat in the last hour.

  • 02
    Active signal

    Resolution-risk observation firing

    Market has reached expiry. Watch the UMA dispute window.

What to track next

  • Verify the resolution source on this page — exchange feed, official release, news consensus — before treating any move as new information.

Verification actions only — never trade recommendations.

Each factor is grounded in a single named metric you can verify on this page — probability, volume, liquidity, signal, resolution state. No predictions, no prose hallucinations.

Verification Brief

A guided checklist for what must be proven before this market is treated as reliable context.

officially resolved
Trust transition

The market appears resolved. The useful check is whether the source and final oracle state match the displayed outcome.

Verification goal

Map resolution-relevant sources to the exact criteria needed to avoid misreading price as settlement.

What needs proof

Primary source

required

Confirm the primary ambiguous wording source and whether it directly answers the market's resolution question.

Current evidence: to the number of tornadoes recorded in the United States during the specified month, based on the monthly count publishe

Contract wording

required

Extract the exact condition that makes YES resolve true and note any exclusions, time zone, deadline, or fallback rule.

Telegram verification task

Orrery verification task Will fewer than 30 tornadoes occur in the United States in December? State: Resolved YES — officially resolved Need sources for: 1. Primary source: Confirm the primary ambiguous wording source and whether it directly answers the market's resolution question. 2. Contract wording: Extract the exact condition that makes YES resolve true and note any exclusions, time zone, deadline, or fallback rule. 3. Liquidity context: Check whether the move is supported by enough liquidity and volume to treat it as meaningful context. Drop only durable links that map to one criterion. Research only. Not trade advice.

X verification thread

Orrery verification brief Will fewer than 30 tornadoes occur in the United States in December? State: officially resolved Verify: Primary source + Contract wording Price is not settlement. Research only. Not trade advice.

Market link goes in reply

Guided source review

A controlled loop for durable sources. Every source must answer one criterion from this Verification Brief.

Sources

0

Criteria covered

0

Reviewed

0

Awaiting review

0

Submit a source mapped to a criterion

Confirm the primary ambiguous wording source and whether it directly answers the market's resolution question.

Research only · no price-only screenshots · no profit claims

Recent source checks

Pilot audit summary

Research only · Not trade advice · Every source maps to one criterion

Timeline

critical · price · trade flow

Critical

  • 13:15Signal

    Resolution risk

    Market has reached expiry. Watch the UMA dispute window.

    LOW

Price movement

+1.3pp over the last 24h, now 100¢.

updated 13:15:00 UTC·src:Polymarket CLOB·Polymarket Data

Active signals

Recent Trades

No recent trades visible from the Data API for this market. That usually means liquidity is thin or this market is between event windows.

Open large-trade flowBrowse related marketsAlert me on the next trade
updated 13:15:00 UTC·src:Polymarket Data

Market Description

This market will resolve according to the number of tornadoes recorded in the United States during the specified month, based on the monthly count published on the National Centers for Environmental Information U.S. Tornadoes Time Series page (see: https://www.ncei.noaa.gov/access/monitoring/tornadoes/time-series). Only tornadoes appearing in the final NCEI dataset for that month will count. As of market creation, the relevant report is scheduled to be released on January 13, 2026, at 5:01 PM GMT+1 or 11:01 AM ET (Release schedule: https://www.ncei.noaa.gov/access/monitoring/dyk/monthly-releases). The market will resolve based on the first relevant tornado count published on the NCEI tornado time-series page after this scheduled release time. If the value published after this scheduled release time is labeled preliminary, it will still determine resolution, and the market will resolve independently of any subsequent revisions, corrections, or retroactive adjustments. The market will not resolve based on any preliminary values published before the scheduled release time. If no data is published by the scheduled release time, or if the NCEI website is temporarily unavailable, this market will remain open until that data is made available. If the relevant data is not made available by the date of the next scheduled publication ET, this market will resolve based on available data for the most recent prior month. If the NCEI website becomes permanently unavailable, this market will resolve using another credible source.

Why this category?

confidence: medium

Category

Weather

Source

Keyword rule

Matched term

tornado

Reason

Question text contains "tornado" — matched the Weather keyword rule.

Categories come from a deterministic engine: manual overrides (highest priority) → sports hard markers → event-tag rules → keyword rules → Gamma category hint → default. The engine is versioned in category-overrides.ts; methodology lives at /methodology.

FAQ — questions readers actually ask

What is the current Polymarket probability for "Will fewer than 30 tornadoes occur in the United States in December?"?

As of Thu, 04 Jun 2026 13:15:00 GMT, YES is priced at 100% implied probability on Polymarket. The price changed +1.3pp in the last 24 hours, +0.0pp in the last hour, and +0.4pp in the last 7 days.

When does this market resolve?

This market resolves by Jan 13, 2026 (2026-01-13T00:00:00.000Z). Resolution is determined from UMA optimistic oracle (resolved).

What source determines the outcome?

Resolution is sourced from UMA optimistic oracle (resolved). Polymarket's UMA optimistic oracle is the final settlement layer; if the published source is ambiguous, UMA tokenholders adjudicate. Source-extraction confidence is shown in the Resolution & Risk block above.

How much is being traded on this market?

$0.00 of trading volume in the last 24 hours. Lifetime volume on Polymarket: $25.0K. Open liquidity in the YES/NO orderbooks: $0.00. Spread between best bid and best ask: 0.1¢.

Is this a trade recommendation?

No. Orrery describes — never predicts. Every signal on this market carries explicit Evidence, Backtest, and Action tiers. The Action is always one of: Watch only, Inspect timeline, Create alert, Verify source, or Ignore — never Buy or Sell. The probability above is the market's collective implied probability, not a forecast Orrery is publishing.

How fresh is this data and where does it come from?

This page revalidates from the public Polymarket APIs every 30 seconds. Probability and 24h-change come from Gamma; the chart series comes from the CLOB orderbook history; trade and holder data come from the Data API. The fetched-at timestamp on each block tells you exactly how old the underlying upstream pull was.

Alerts

¢
Deliver

In-app banners fire as soon as a rule is satisfied. Email digests are wired to a server-side cron and continue while your tabs are closed. Telegram and Discord are planned — every existing rule will keep working as channels light up.

Top Holders

10 wallets
YES

None.

Open on Polymarket