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Tornado in California by October 25?
polymarket

Tornado in California by October 25?

Volume:
$722

Tornado in California by October 25?

 - Polymarket

Tornado in California by October 25? - Polymarket

1W

News

Positive

Negative

Neutral

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Vol.

·

Resolved Oct 29, 2026

Closed: Oct 29, 6:02 AM EST

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Tornado in California by October 25?

View
0%
Yes 0¢No 100¢
—
N/A
$722
N/A
N/A
N/A
Settled
No
Total markets: 1

Description

This market will resolve to “Yes” if a tornado is on the ground anywhere in California at any time between October 21, 2026, 12:00 AM PT and October 25, 2026, 11:59 PM PT. Otherwise, this market will resolve to “No”. Any portion of a tornado's ground path within California qualifies, including a tornado that begins outside the state. A tornado qualifies if it is listed as a tornado report in the NOAA Storm Prediction Center (SPC) Storm Reports or any National Weather Service (NWS) office confirms it in a damage survey or Public Information Statement. The time the tornado occurred governs, not the date of the SPC report page or the time it was reported. SPC report times are in UTC and will be converted to PT. A report qualifies only if its reported location, coordinates, or surveyed path is on land within California. Funnel clouds that do not touch down and waterspouts that stay offshore do not qualify. Where an NWS damage survey or Public Information Statement and the SPC Storm Reports disagree about whether an event was a tornado, the SPC Storm Reports determination governs. This market may resolve “Yes” before October 28, 2026, 11:59 PM PT only on SPC Storm Report, NWS confirmation in a damage survey or Public Information Statement. Only information published by October 28, 2026, 11:59 PM PT will be considered, and the SPC Storm Reports will be read as they stand at that time. A report that the NWS or SPC removes, or determines was not a tornado, by that time does not qualify. The primary resolution source is the SPC Storm Reports at https://www.spc.noaa.gov/climo/reports/, with NWS damage surveys and Public Information Statements as confirming sources. Public Information Statements are available on each NWS office's product page, for example https://forecast.weather.gov/product.php?site=LOX&issuedby=LOX&product=PNS for the Los Angeles office. Statements from other NWS offices can be found at https://forecast.weather.gov/product_sites.php?site=NWS&product=PNS.

Polymarket

This market will resolve to “Yes” if a tornado is on the ground anywhere in California at any time between October 21, 2026, 12:00 AM PT and October 25, 2026, 11:59 PM PT. Otherwise, this market will resolve to “No”. Any portion of a tornado's ground path within California qualifies, including a tornado that begins outside the state. A tornado qualifies if it is listed as a tornado report in the NOAA Storm Prediction Center (SPC) Storm Reports or any National Weather Service (NWS) office confirms it in a damage survey or Public Information Statement. The time the tornado occurred governs, not the date of the SPC report page or the time it was reported. SPC report times are in UTC and will be converted to PT. A report qualifies only if its reported location, coordinates, or surveyed path is on land within California. Funnel clouds that do not touch down and waterspouts that stay offshore do not qualify. Where an NWS damage survey or Public Information Statement and the SPC Storm Reports disagree about whether an event was a tornado, the SPC Storm Reports determination governs. This market may resolve “Yes” before October 28, 2026, 11:59 PM PT only on SPC Storm Report, NWS confirmation in a damage survey or Public Information Statement. Only information published by October 28, 2026, 11:59 PM PT will be considered, and the SPC Storm Reports will be read as they stand at that time. A report that the NWS or SPC removes, or determines was not a tornado, by that time does not qualify. The primary resolution source is the SPC Storm Reports at https://www.spc.noaa.gov/climo/reports/, with NWS damage surveys and Public Information Statements as confirming sources. Public Information Statements are available on each NWS office's product page, for example https://forecast.weather.gov/product.php?site=LOX&issuedby=LOX&product=PNS for the Los Angeles office. Statements from other NWS offices can be found at https://forecast.weather.gov/product_sites.php?site=NWS&product=PNS.

Frequently asked questions

On Polymarket, the dashboard for the California tornado market tracks the current odds of a tornado occurring in California by October 25. You’ll find the implied probability of a 'yes' outcome, along with a price history chart showing how the market has fluctuated over time. The dashboard also displays the 24-hour trading volume, indicating how much activity is happening in this market. Currently, the total volume is $722 with $5 traded in the last day, reflecting trader sentiment on this unusual weather possibility.

Comparing prediction market odds to analyst forecasts reveals interesting insights into collective belief. While traditional weather analysts might assign a very low probability to a tornado in California during this timeframe, this market allows traders to express their own assessments, potentially incorporating factors not fully captured in standard models. If analysts consistently underestimate or overestimate the probability compared to this market's price, it could suggest a valuable signal about overlooked information or biases in forecasting. Currently, the market price suggests a different view than many conventional forecasts.

On Polymarket, this market is priced through a continuous auction mechanism. Traders buy and sell shares representing 'yes' or 'no' outcomes, and the price of these shares fluctuates based on supply and demand. As more traders believe a tornado will occur, the price of 'yes' shares increases, and vice versa. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price reflects the market’s collective assessment of the probability, and the closer we get to Oct 26, 2026, the more sensitive the price will become to new information. The current volume indicates a moderate level of interest in this event.

This market resolves around Oct 26, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Specifically, the resolution will depend on whether a tornado is officially recorded in California before that date. Verification will rely on reports from the National Weather Service or similar authoritative sources. The outcome is determined by the presence or absence of a confirmed tornado, not by the severity or impact of any potential storm. This market provides a way to forecast this rare weather event.

Several signals could significantly move this market. Any credible reports of unusual atmospheric conditions developing in California, such as increased wind shear or instability, would likely increase the price of 'yes' shares. Conversely, forecasts from the National Weather Service explicitly stating a low probability of tornado formation would likely decrease the price. Major news coverage of potential severe weather threats in the region could also influence trader behavior. Unexpected shifts in long-range weather models or the emergence of a tropical system impacting California are other potential catalysts.