API developers

@vicb Thanks.

Yep, I correct for that.

But, u & v interpolation better, at least for large angle differences.

I like method 3, though probably slightly slower.

I use u & v interpolations.

There is one gotcha when you do angle interpolation wrt to wrapping: avg(310, 50) is 0 not 360 / 2.

it's been there for ages. just search for "windy" in the app store. it's not that hard. https://apps.apple.com/us/app/windy-com/id1161387262

Could you add charts for high temp ensemble / trend forecast like in the following examples (the shaded area shows the uncertainty of the ensemble forecasts):

Most recent 15 days high temp trend of German broadcasting company

The long range radar (lower resolution) should not be used instead of the short range radar (higher resolution) but additional to it in the areas not covered by the short range one!

@BarboraSamkova Thanks!!

Played around with the different methods here.

Drag the cursor around in the blocks to see.

Satellite is updated.

We are investigating the cause of the satellite data distribution problem.

Hi

What is the best way to interpolate wind data? Which method do you use?

Interpolating the u and v vectors, results in the speed of the interpolated value being relatively lower.

Interpolating the direction and speed, rather than the vectors, appears appropriate for small angles, but not for large angles.

Perhaps a combination, dependent on the size of the angle?

I am doing a lot of interpolation in the traj plugin, to get the trajectories smoother.

According to the NOAA Climate Prediction Center, up to three tropical cyclones could form in the Northwest Pacific Basin within the next 7 days, which could affect the Philippines, Taiwan, Guam, and the recently-affected Japan.

Tropical Depression 95W

A Tropical Depression (95W) remains just northeast of Palau and is slowly organizing. According to Japan Meteorological Agency (JMA), this could intensify into a Tropical Storm and have the international name “Peipah”.

Once it enters the Philippine Area of Responsibility, it will be named “Marilyn”. Its trough is affecting the eastern section of the country, and as it moves north, it is expected to enhance the southwest monsoon that could bring rains and gusty winds over the western sections of the Philippines in the coming days.

Until now, its future track is still uncertain due to low model consensus. ECMWF model is showing possible approach towards Taiwan-southern Japan Area, while GFS Model is showing that it will stall just northeast of the Philippines and interact with the other cyclones.

Other Potential Tropical Cyclones

As of the moment, the ECMWF and GFS models are indicating the formation of tropical cyclones within the next 7 days and linger around the basin, but the future track remains uncertain. Interests in Japan, Taiwan, and the Philippines are advised to monitor this development.

Here’s ECMWF Model showing multiple Low Pressure Systems in the Northwest Pacific Basin by weekend.

The leftmost is 95W (Peipah) and the rest are still not yet being monitored by forecasting agencies, but these could develop into tropical cyclones in the coming days.

https://www.windy.com/?2019-09-15-09,16.145,162.347,4,i:pressure,internal