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icon for Will Hawaii reach Coral Bleaching Alert Level 1 by December 31, 2026?
Climate & Science·Weather

Will Hawaii reach Coral Bleaching Alert Level 1 by December 31, 2026?

icon for Will Hawaii reach Coral Bleaching Alert Level 1 by December 31, 2026?
Climate & Science·Weather

Will Hawaii reach Coral Bleaching Alert Level 1 by December 31, 2026?

72% chance
Polymarket
NEW
72% chance
Polymarket
NEW
This market will resolve to "Yes" if NOAA Coral Reef Watch's Bleaching Alert Area for the Main Hawaiian Islands virtual station reaches "Bleaching Alert Level 1" (or a higher alert level) on the Current Coral Bleaching Alert Level on any day within this market's timeframe (from market creation through December 31, 2026, 11:59 PM ET). Otherwise, this market will resolve to "No". The Bleaching Alert Area for the Main Hawaiian Islands virtual station reaching Bleaching Alert Level 1 (or a higher alert level) on any single day within this timeframe is sufficient for a "Yes" resolution. For the purposes of this market, Bleaching Alert Level 1 corresponds to a Degree Heating Week (DHW) value of 4 or greater °C-weeks at the Main Hawaiian Islands virtual station, as calculated by NOAA Coral Reef Watch from the 90th-percentile daily HotSpot values within that station's boundary. The primary resolution source for this market will be the "Bleaching Alert Area" reading on NOAA Coral Reef Watch's Main Hawaiian Islands virtual station gauge page (https://coralreefwatch.noaa.gov/product/vs/gauges/hawaii.php). If that page is unavailable or has not been updated, resolution will use NOAA Coral Reef Watch's own data for the Main Hawaiian Islands virtual station in any other format it publishes (for example, its regional virtual station time-series data files, available at https://coralreefwatch.noaa.gov/product/vs/data.php), which apply the same station-level methodology. Readings for individual 5km satellite pixels that are not aggregated to the Main Hawaiian Islands virtual station will not be used. Only NOAA Coral Reef Watch readings dated within this market's timeframe (from market creation through December 31, 2026) can trigger a "Yes" resolution. If NOAA Coral Reef Watch data covering this timeframe has not been published by January 4, 2027, this market will remain open until January 11, 2027, or until such data is published, whichever comes first. If no NOAA Coral Reef Watch data covering any day within this market's timeframe is ever published, this market will resolve to "No".Strong El Niño conditions, with sea surface temperature anomalies exceeding 1.7°C in the Niño-3.4 region and forecasts for a very strong event through fall and winter 2026-27, represent the primary driver behind the 71.5% market-implied probability of Hawaii reaching Coral Bleaching Alert Level 1 by year-end. Elevated ocean temperatures increase the likelihood of accumulating Degree Heating Weeks sufficient for bleaching alerts per NOAA Coral Reef Watch criteria, consistent with historical patterns linking strong El Niño phases to Pacific heat stress. Recent model runs and observational data reinforce trader consensus on this trajectory, though divergence in seasonal forecasts and potential shifts in steering patterns introduce realistic uncertainty around exact timing and intensity.

This market will resolve to "Yes" if NOAA Coral Reef Watch's Bleaching Alert Area for the Main Hawaiian Islands virtual station reaches "Bleaching Alert Level 1" (or a higher alert level) on the Current Coral Bleaching Alert Level on any day within this market's timeframe (from market creation through December 31, 2026, 11:59 PM ET). Otherwise, this market will resolve to "No".

The Bleaching Alert Area for the Main Hawaiian Islands virtual station reaching Bleaching Alert Level 1 (or a higher alert level) on any single day within this timeframe is sufficient for a "Yes" resolution. For the purposes of this market, Bleaching Alert Level 1 corresponds to a Degree Heating Week (DHW) value of 4 or greater °C-weeks at the Main Hawaiian Islands virtual station, as calculated by NOAA Coral Reef Watch from the 90th-percentile daily HotSpot values within that station's boundary.

The primary resolution source for this market will be the "Bleaching Alert Area" reading on NOAA Coral Reef Watch's Main Hawaiian Islands virtual station gauge page (https://coralreefwatch.noaa.gov/product/vs/gauges/hawaii.php). If that page is unavailable or has not been updated, resolution will use NOAA Coral Reef Watch's own data for the Main Hawaiian Islands virtual station in any other format it publishes (for example, its regional virtual station time-series data files, available at https://coralreefwatch.noaa.gov/product/vs/data.php), which apply the same station-level methodology. Readings for individual 5km satellite pixels that are not aggregated to the Main Hawaiian Islands virtual station will not be used.

Only NOAA Coral Reef Watch readings dated within this market's timeframe (from market creation through December 31, 2026) can trigger a "Yes" resolution. If NOAA Coral Reef Watch data covering this timeframe has not been published by January 4, 2027, this market will remain open until January 11, 2027, or until such data is published, whichever comes first. If no NOAA Coral Reef Watch data covering any day within this market's timeframe is ever published, this market will resolve to "No".This market will resolve to "Yes" if NOAA Coral Reef Watch's Bleaching Alert Area for the Main Hawaiian Islands virtual station reaches "Bleaching Alert Level 1" (or a higher alert level) on the Current Coral Bleaching Alert Level on any day within this market's timeframe (from market creation through December 31, 2026, 11:59 PM ET). Otherwise, this market will resolve to "No". The Bleaching Alert Area for the Main Hawaiian Islands virtual station reaching Bleaching Alert Level 1 (or a higher alert level) on any single day within this timeframe is sufficient for a "Yes" resolution. For the purposes of this market, Bleaching Alert Level 1 corresponds to a Degree Heating Week (DHW) value of 4 or greater °C-weeks at the Main Hawaiian Islands virtual station, as calculated by NOAA Coral Reef Watch from the 90th-percentile daily HotSpot values within that station's boundary. The primary resolution source for this market will be the "Bleaching Alert Area" reading on NOAA Coral Reef Watch's Main Hawaiian Islands virtual station gauge page (https://coralreefwatch.noaa.gov/product/vs/gauges/hawaii.php). If that page is unavailable or has not been updated, resolution will use NOAA Coral Reef Watch's own data for the Main Hawaiian Islands virtual station in any other format it publishes (for example, its regional virtual station time-series data files, available at https://coralreefwatch.noaa.gov/product/vs/data.php), which apply the same station-level methodology. Readings for individual 5km satellite pixels that are not aggregated to the Main Hawaiian Islands virtual station will not be used. Only NOAA Coral Reef Watch readings dated within this market's timeframe (from market creation through December 31, 2026) can trigger a "Yes" resolution. If NOAA Coral Reef Watch data covering this timeframe has not been published by January 4, 2027, this market will remain open until January 11, 2027, or until such data is published, whichever comes first. If no NOAA Coral Reef Watch data covering any day within this market's timeframe is ever published, this market will resolve to "No".
Volume
$1,588
End Date
Jan 12, 2027
Market Opened
Aug 7, 2026, 2:28 PM ET

Resolution Source

https://coralreefwatch.noaa.gov/product/vs/gauges/hawaii.php

Resolver

0x65070BE91...
This market will resolve to "Yes" if NOAA Coral Reef Watch's Bleaching Alert Area for the Main Hawaiian Islands virtual station reaches "Bleaching Alert Level 1" (or a higher alert level) on the Current Coral Bleaching Alert Level on any day within this market's timeframe (from market creation through December 31, 2026, 11:59 PM ET). Otherwise, this market will resolve to "No". The Bleaching Alert Area for the Main Hawaiian Islands virtual station reaching Bleaching Alert Level 1 (or a higher alert level) on any single day within this timeframe is sufficient for a "Yes" resolution. For the purposes of this market, Bleaching Alert Level 1 corresponds to a Degree Heating Week (DHW) value of 4 or greater °C-weeks at the Main Hawaiian Islands virtual station, as calculated by NOAA Coral Reef Watch from the 90th-percentile daily HotSpot values within that station's boundary. The primary resolution source for this market will be the "Bleaching Alert Area" reading on NOAA Coral Reef Watch's Main Hawaiian Islands virtual station gauge page (https://coralreefwatch.noaa.gov/product/vs/gauges/hawaii.php). If that page is unavailable or has not been updated, resolution will use NOAA Coral Reef Watch's own data for the Main Hawaiian Islands virtual station in any other format it publishes (for example, its regional virtual station time-series data files, available at https://coralreefwatch.noaa.gov/product/vs/data.php), which apply the same station-level methodology. Readings for individual 5km satellite pixels that are not aggregated to the Main Hawaiian Islands virtual station will not be used. Only NOAA Coral Reef Watch readings dated within this market's timeframe (from market creation through December 31, 2026) can trigger a "Yes" resolution. If NOAA Coral Reef Watch data covering this timeframe has not been published by January 4, 2027, this market will remain open until January 11, 2027, or until such data is published, whichever comes first. If no NOAA Coral Reef Watch data covering any day within this market's timeframe is ever published, this market will resolve to "No".Strong El Niño conditions, with sea surface temperature anomalies exceeding 1.7°C in the Niño-3.4 region and forecasts for a very strong event through fall and winter 2026-27, represent the primary driver behind the 71.5% market-implied probability of Hawaii reaching Coral Bleaching Alert Level 1 by year-end. Elevated ocean temperatures increase the likelihood of accumulating Degree Heating Weeks sufficient for bleaching alerts per NOAA Coral Reef Watch criteria, consistent with historical patterns linking strong El Niño phases to Pacific heat stress. Recent model runs and observational data reinforce trader consensus on this trajectory, though divergence in seasonal forecasts and potential shifts in steering patterns introduce realistic uncertainty around exact timing and intensity.

This market will resolve to "Yes" if NOAA Coral Reef Watch's Bleaching Alert Area for the Main Hawaiian Islands virtual station reaches "Bleaching Alert Level 1" (or a higher alert level) on the Current Coral Bleaching Alert Level on any day within this market's timeframe (from market creation through December 31, 2026, 11:59 PM ET). Otherwise, this market will resolve to "No".

The Bleaching Alert Area for the Main Hawaiian Islands virtual station reaching Bleaching Alert Level 1 (or a higher alert level) on any single day within this timeframe is sufficient for a "Yes" resolution. For the purposes of this market, Bleaching Alert Level 1 corresponds to a Degree Heating Week (DHW) value of 4 or greater °C-weeks at the Main Hawaiian Islands virtual station, as calculated by NOAA Coral Reef Watch from the 90th-percentile daily HotSpot values within that station's boundary.

The primary resolution source for this market will be the "Bleaching Alert Area" reading on NOAA Coral Reef Watch's Main Hawaiian Islands virtual station gauge page (https://coralreefwatch.noaa.gov/product/vs/gauges/hawaii.php). If that page is unavailable or has not been updated, resolution will use NOAA Coral Reef Watch's own data for the Main Hawaiian Islands virtual station in any other format it publishes (for example, its regional virtual station time-series data files, available at https://coralreefwatch.noaa.gov/product/vs/data.php), which apply the same station-level methodology. Readings for individual 5km satellite pixels that are not aggregated to the Main Hawaiian Islands virtual station will not be used.

Only NOAA Coral Reef Watch readings dated within this market's timeframe (from market creation through December 31, 2026) can trigger a "Yes" resolution. If NOAA Coral Reef Watch data covering this timeframe has not been published by January 4, 2027, this market will remain open until January 11, 2027, or until such data is published, whichever comes first. If no NOAA Coral Reef Watch data covering any day within this market's timeframe is ever published, this market will resolve to "No".This market will resolve to "Yes" if NOAA Coral Reef Watch's Bleaching Alert Area for the Main Hawaiian Islands virtual station reaches "Bleaching Alert Level 1" (or a higher alert level) on the Current Coral Bleaching Alert Level on any day within this market's timeframe (from market creation through December 31, 2026, 11:59 PM ET). Otherwise, this market will resolve to "No". The Bleaching Alert Area for the Main Hawaiian Islands virtual station reaching Bleaching Alert Level 1 (or a higher alert level) on any single day within this timeframe is sufficient for a "Yes" resolution. For the purposes of this market, Bleaching Alert Level 1 corresponds to a Degree Heating Week (DHW) value of 4 or greater °C-weeks at the Main Hawaiian Islands virtual station, as calculated by NOAA Coral Reef Watch from the 90th-percentile daily HotSpot values within that station's boundary. The primary resolution source for this market will be the "Bleaching Alert Area" reading on NOAA Coral Reef Watch's Main Hawaiian Islands virtual station gauge page (https://coralreefwatch.noaa.gov/product/vs/gauges/hawaii.php). If that page is unavailable or has not been updated, resolution will use NOAA Coral Reef Watch's own data for the Main Hawaiian Islands virtual station in any other format it publishes (for example, its regional virtual station time-series data files, available at https://coralreefwatch.noaa.gov/product/vs/data.php), which apply the same station-level methodology. Readings for individual 5km satellite pixels that are not aggregated to the Main Hawaiian Islands virtual station will not be used. Only NOAA Coral Reef Watch readings dated within this market's timeframe (from market creation through December 31, 2026) can trigger a "Yes" resolution. If NOAA Coral Reef Watch data covering this timeframe has not been published by January 4, 2027, this market will remain open until January 11, 2027, or until such data is published, whichever comes first. If no NOAA Coral Reef Watch data covering any day within this market's timeframe is ever published, this market will resolve to "No".
Volume
$1,588
End Date
Jan 12, 2027
Market Opened
Aug 7, 2026, 2:28 PM ET

Resolution Source

https://coralreefwatch.noaa.gov/product/vs/gauges/hawaii.php

Resolver

0x65070BE91...

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Frequently Asked Questions

"Will Hawaii reach Coral Bleaching Alert Level 1 by December 31, 2026?" is a prediction market on Polymarket where traders buy and sell "Yes" or "No" shares based on whether they believe this event will happen. The current crowd-sourced probability is 72% for "Yes." For example, if "Yes" is priced at 72¢, the market collectively assigns a 72% chance that this event will occur. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Will Hawaii reach Coral Bleaching Alert Level 1 by December 31, 2026?" is a newly created market on Polymarket, launched on Aug 7, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Will Hawaii reach Coral Bleaching Alert Level 1 by December 31, 2026?," simply choose whether you believe the answer is "Yes" or "No." Each side has a current price that reflects the market's implied probability. Enter your amount and click "Trade." If you buy "Yes" shares and the outcome resolves as "Yes," each share pays out $1. If it resolves as "No," your "Yes" shares pay $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current probability for "Will Hawaii reach Coral Bleaching Alert Level 1 by December 31, 2026?" is 72% for "Yes." This means the Polymarket crowd currently believes there is a 72% chance that this event will occur. These odds update in real-time based on actual trades, providing a continuously updated signal of what the market expects to happen.

The resolution rules for "Will Hawaii reach Coral Bleaching Alert Level 1 by December 31, 2026?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.