Current NOAA Coral Reef Watch data show Main Hawaiian Islands at Bleaching Watch status with modest heat stress, supporting the narrow 52.5% market-implied odds against reaching Alert Level 1 (HotSpot ≥1 and DHW 4–8) by year-end. Seasonal cooling through fall and winter, combined with the apparent end of the 2023–2025 global mass bleaching event, anchors trader sentiment toward “No.” Key uncertainties include potential late-2026 marine heatwave development, ENSO transition variability, and model spread in sea-surface temperature forecasts that could push Degree Heating Weeks across the threshold. Updated NOAA Coral Reef Watch 5 km products and seasonal outlooks through December will likely drive the next decisive shifts in positioning.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWill Hawaii reach Coral Bleaching Alert Level 1 by December 31, 2026?
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".
Market Opened: Aug 7, 2026, 2:28 PM ET
Resolution Source
https://coralreefwatch.noaa.gov/product/vs/gauges/hawaii.phpResolver
0x65070BE91...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".
Resolution Source
https://coralreefwatch.noaa.gov/product/vs/gauges/hawaii.phpResolver
0x65070BE91...Current NOAA Coral Reef Watch data show Main Hawaiian Islands at Bleaching Watch status with modest heat stress, supporting the narrow 52.5% market-implied odds against reaching Alert Level 1 (HotSpot ≥1 and DHW 4–8) by year-end. Seasonal cooling through fall and winter, combined with the apparent end of the 2023–2025 global mass bleaching event, anchors trader sentiment toward “No.” Key uncertainties include potential late-2026 marine heatwave development, ENSO transition variability, and model spread in sea-surface temperature forecasts that could push Degree Heating Weeks across the threshold. Updated NOAA Coral Reef Watch 5 km products and seasonal outlooks through December will likely drive the next decisive shifts in positioning.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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