Recent updates from the operators
Hy-Line Cruises
“#ALERT for Tuesday, August 25: We are running modified Martha's Vineyard & Inter-Island schedules. See below:”
Source: Hy-Line Cruises social media
Time: Monday 8/24/26 at 6:05 PM EDT
Schedule & Forecast
Updated at 6:35 PM ETThese probabilities are calibrated — the percentages reflect how often comparable trips historically ran under similar conditions. When the model shows an 80% chance of running, about 80% of comparable trips historically ran.
Today
| Time | Vessel | Probability | Wind | Gusts | Waves | Dir |
|---|---|---|---|---|---|---|
| 7:30 pm | SSA Fast | 99% | 13.4 mph | 17.9 mph | 1.3 ft | S |
| 8:00 pm | SSA Trad. | 99% | 13.4 mph | 17.9 mph | 1.3 ft | S |
| 8:00 PM | Hy-Line Fast | 99% | 13.4 mph | 17.9 mph | 1.3 ft | S |
Today’s forecast uses data from NOAA Buoy 44020 (Nantucket Sound). Tomorrow and beyond use the Open-Meteo marine forecast, matched to the nearest 3-hour interval. Forecasts for days 1–3 are highly reliable; confidence decreases further out.
Running day-level model. Per-trip predictions use weather forecasts matched to each departure time.
Model & Methodology
The model estimates whether each scheduled ferry will run based on current and forecasted marine conditions.
When the model shows an 80% chance of running, about 80% of comparable trips historically ran. This means the probabilities are calibrated and can be interpreted directly.
Trained on 33,000+ trips (2023–present), including 870 confirmed cancellations, covering Nantucket routes. The model covers weather-related risk only; mechanical and operational cancellations are not modeled.
distinguishes high-risk conditions from normal operation
probabilities reflect real-world outcomes
Current Conditions
Data from NOAA Buoy 44020 (Nantucket Sound)
Wind Speed
13.4 mph
6:00 PM EDT
Wind Gusts
17.9 mph
6:00 PM EDT
Wind Direction
S (190°)
6:00 PM EDT
Wave Height
1.3 ft
5:50 PM EDT
Wave Period
3s
5:50 PM EDT
Temperature
75°F
6:00 PM EDT
33 of the last 72 observations include wave height; 24 include dominant wave period (DPD). The buoy doesn't report wave data in every reading — we display the most recent available values, which may be less recent than the wind data.
Vessel Locations
