Weather4D supports Bátar community

Bátar, What is ? This is the word "boat" in Icelandic. It is true that pronounced in French, it sounds a bit weird, but we quickly forget ! And why talk about it ? Because Weather4D has given its support to this surprising collective that has decided to revive the great tradition of the Vikings and their maritime expeditions. Toulouse citizen as the members of Bátar, Olivier Bouyssou was seduced by their project and the energy they have devoted to it for ten years. And since they already use its application to navigate the connection became obvious.. Read more …

Weather4D with Mac M1

We've been talking about it since 2020 in the Facebook group of Weather4D users, the messaging appWeather4D Routing & Navigation (¹) now works on ARM-based Mac : Mac M1 and later, from the system macOS 11.x ("Big Sur" and following). All you need to do is connect the Mac to a GPS receiver or a NMEA gateway via Wi-Fi to receive the position and navigation data from the instruments.. Read more …

Alternative weather models [Update]

[Updated 29 July 2022]

For several years, forecast files in GRIB format have been widely used in meteorological applications.. The majority of forecast models have been made freely available by the meteorological services, all countries included. Applications like XyGrib, LuckGrib, SailGrib, Weather4D and other, offer a selection of atmospheric and oceanic models, up to 25 weather models and 15 waves and currents models for Weather4D, more than thirty models with LuckGrib, in example. But there are always others that can usefully complement the standard offerings of these applications.. Read more …

Predict thunderstorms with Weather4D


In Weather4D (all versions) most weather models provide a data calledCAPE.

Convective Available Potential Energy, in French : Energie potentielle de convection disponible. Behind this abstruse acronym hides a powerful tool for forecasting thunderstorms. The CAPE is measured in joules per kilogram of air (J / Kg) and defines the vertical thrust energy of a hot air particle in a colder atmosphere. In other words, vertical acceleration of the air particle will be directly related to this energy measurement. Read more …