Oceans & waters · Puerto Rico · summer
Marine Bioluminescence in Mosquito Bay, Vieques
Dinoflagellate bays and marine bioluminescence windows, scored from lunar darkness, seasonal water warmth, and low freshwater runoff.
Readiness
High confidence39
Peak was 117 days ago
Live summary
As of 9 Nov 2026, Marine Bioluminescence readiness in Mosquito Bay, Vieques, Puerto Rico is 39 out of 100, phase past peak. The timing model places peak on 15 Jul 2026. Lunar illumination is 1%. Mean cloud cover over the next three days is 41%.
- Readiness
- 39 / 100
- Status
- Declining
- Confidence
- High confidence
- Evidence type
- Forecast
- Model
- Dark-moon ephemeris, seasonal warmth, and runoff
- Timing
- Peak was 117 days ago
- Estimated peak window
- 2 Jul 2026 – 28 Jul 2026
- Climatological peak
- 15 Jul 2026
- Adjusted peak
- 15 Jul 2026
- Accumulated GDD
- n/a
- Planetary K-index
- n/a
- Lunar illumination
- 1%
- NDVI
- n/a
- Cloud cover, next 3 days
- 41%
- Coordinates
- 18.10° N, 65.44° W
- Updated
- 9 Nov 2026, 08:38 UTC
This score uses dark-moon ephemeris, seasonal warmth, and runoff.
Fourteen-day outlook
Projected readiness for each day. Botanical and wildlife bars use forecast temperature. Meteor shower bars combine stream activity, lunar phase, and forecast cloud cover. Aurora bars use the NOAA 3-day Kp forecast when available and a quiet-oval baseline with forecast cloud cover for days 4–14.
Mon 9
39 out of 100 on 2026-11-09
46% cld
Tue 10
40 out of 100 on 2026-11-10
50% cld
Wed 11
38 out of 100 on 2026-11-11
26% cld
Thu 12
38 out of 100 on 2026-11-12
25% cld
Fri 13
35 out of 100 on 2026-11-13
24% cld
Sat 14
31 out of 100 on 2026-11-14
49% cld
Sun 15
29 out of 100 on 2026-11-15
61% cld
Mon 16
0 out of 100 on 2026-11-16
64% cld
Tue 17
0 out of 100 on 2026-11-17
26% cld
Wed 18
0 out of 100 on 2026-11-18
26% cld
Thu 19
0 out of 100 on 2026-11-19
14% cld
Fri 20
0 out of 100 on 2026-11-20
24% cld
Sat 21
0 out of 100 on 2026-11-21
35% cld
Sun 22
0 out of 100 on 2026-11-22
38% cld
Field notes & historical context
Shallow mangrove-ringed bay with high Pyrodinium bahamense density; brightest on warm, dry nights around the new moon.
Bioluminescent dinoflagellates such as Pyrodinium bahamense and Noctiluca scintillans concentrate in shallow, nutrient-rich embayments during warm months, flashing blue-green when mechanically agitated under moonless skies.
18.10° N, 65.44° W · America/Puerto_Rico
Sources & data freshness
Forecast · High confidence · Updated 9 Nov 2026, 08:38 UTC
- USNO / Synodic Lunar Ephemeris
New-moon darkness window and lunar illumination interference
- NOAA CoastWatch / Marine Bio-Optical Reference
Dinoflagellate embayment seasonality and coastal water conditions
- Open-Meteo Weather & Precipitation Forecast
Freshwater runoff (precipitation) and cloud cover outlook
Safety & responsible visiting
Never wear DEET insect repellent, sunscreen, or skin lotions into bioluminescent waters—chemical residues kill dinoflagellate colonies. Use licensed kayak operators and avoid swimming where prohibited.
Natural phenomena depend on live weather, local access rules, and habitat conditions. Verify local advisories before travelling.
Ground-truth provenance
Community reportField observations for Mosquito Bay, Vieques
Community observations supplement satellite and weather models with eye-level reports. Every submission is tagged as a Community report with provenance and moderation status—never blended silently into automated readiness scores.
No community field reports have been logged for Mosquito Bay, Vieques in this session yet.
Related places
Other Marine Bioluminescence regions on the index.