Large error in ship wind speed display values on map
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The wind speed at sea recorded on ship as displayed in Windy in ship markers is hugely delayed, by hours. See this screenshot. You will see that the latest historical wind speed value, displayed upon clicking on the wind flag and a time chart brought up and the cursor slides to the right end, is very much different. Relying on wind indications so outdated can put fishermen in grave dangers. The screenshot does not capture the cursor, but when this screenshot was captured the cursor was position at the ship marker showing '22'. The latest value in the time chart shows 32km/hr, so does the pop up display box when the cursor was brought to the ship marker. The closest time that 22km/hr can be found by scanning back to the left of the time chart is about 4 to 5 hours before.
Upon inspecting across many ship markers, it turns out the same ship is given multiple markers across the hours at different locations. As the latest weather record comes in for the ship, the older markers should be removed and the new marker placed. This will solve the problem.
Upon zooming out and ship markers being pruned away, the remaining markers show the most up-to-date wind speeds. Upon zooming back in, the obsolete wind speed markers show up.
I recognize there is value is showing the historical positions of the ship to know what locations the historical wind values correspond to. But as is only when the cursor is brought to the marker will a text box pop up to say how long ago the ship was there. Perhaps a solution is to keep the old marker there but color it differently than the latest marker.
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@hangInThere
You are right.
The previous positions of the same ship is shown at high zoom level and could be confusing.
In this screenshot all the weather stations shown are actually the same ship at different times and different positions as the ship is moving. By clicking on T1, T2, T3, it gives the same diagram but with the white mark always on the latest position T0.
It would definitively better to remove the previous positions of the ship or to show the ship track like I did.
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@idefix37
Your suggestion to show historical positions in markers with time and linked by lines would be very helpful.I would add a further suggestion that, upon clicking on a ship marker, ALL its historical positions are brought up in markers--without these historical markers, the historical weather measurements in chart become meaningless for ships.
A further suggestion is to reposition the vertical hairline on the chart to the time that correspond to a historical ship marker that has just been left clicked at.
The above would be very helpful where one needs to determine where & when a ship encountered a particularly challenging weather situation, e.g. like what happened in the south of the Strait Of Melaka this morning, with strong winds at 48km/hr. This is essential information to further investigate what weather phenomenon brought this strong wind. I hope Windy R&D team can implement these improvements. The weather data from ships are too crucial to be lost--for the study of adverse weather events at sea one can learn how to better forecast using historical data. See the adverse event in chart below:
