New publication of User Guide by Weather4D Lite in French version. Warning, It's about a New version to download which replaces the previous one (¹). The old guide should be removed from your library in the Apple Books app. Read more …
Label : Weather4D
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 …
The Logbook in Weather4D Routing & Navigation
With update 2.0.57 Entering a logbook is now available in Weather4D Routing & Navigation. Data transfer to web interface Navygatio (¹) allows logbook entries to be recorded in near-real or delayed time depending on whether or not there is an internet connection during navigation. Read more …
Weather4D and iOS Local Network
From iOS / iPadOS version 14.5, a new setting has appeared proposing to allow application access to the Local network. This option is offered when installing a new application, but is not necessarily activated if the application is already installed when updating the OS.
Since then, many of you can no longer connect certain applications (Weather4D, iNavX, aso.) to devices connected via Wi-Fi : Iridium GO!®, multiplexers, various NMEA gateways. To do this, you must activate this "Local network" option for the application concerned. Read more …
Weather4D Routing User Guide & Navigation
New publication of User Guide by Weather4D Routing & Navigation in French version. Warning, It's about a New version to download which replaces the previous one (¹). The old guide should be removed from your library in the Apple Books app. Read more …
Navygatio : Weather4D's 5th dimension [Update]
Weather4D Routing & Navigation brings a major novelty : the serviceNavygatio (¹), a web interface which will allow to record the navigations on a server as time goes by, to add photos, to share own page with relatives, to compare the tracks, to analyze performance, and many more things to come. A real " cloud at the unique service of Weather4D Routing & Navigation users with iOS and SailGrib WR with Android. Read more …
Sea state : interpret wave patterns
In Weather4D, as generally in other applications, sea state forecasts are described by ocean models. The most used is the model WW3 (Wave Watch III), published by the FNMOC (Fleet Numerical Meteorology and Oceanography Center) of the US Navy, with a Global model due 7 days and resolution 1 ° (60NM), and a European model at 3 days and resolution 0.2 ° (12NM). Meteo France publish modelsMFWAM (Wave Assimilated Model) coupled with the ARPEGE and AROME weather models with three resolutions : Global at 0.5 ° (30NM), Europe at 0.1 ° (6NM), France at 0.025 ° (1,5NM) with variable deadlines (¹). Read more …
Routing : from reality to game (episode 3)
While, this morning of the 9th day, Hugo Boss at the top of the Vendée globe 2020 finishes crossing the "Doldrums" at a slow trot(¹), followed by the fleet of competitors stretching out behind him to the north of the Cape Verde Islands, it's a whole different score that the game leaders play Virtual Regatta. Read more …
Routing : from game to reality (continue)
Friday 13 November will not be a lucky day for the Vendée Globe skippers 2020 (¹). They will have to negotiate the meeting with the tropical storm "Theta" which crosses their course with average winds which can reach the 40 knots and strong gusts. Especially the sea will be to fear because, strongly crossed when passing the low pressure center, the waves may exceed the 6 meters and surge chaotically. Read more …