You said "Medicane" ?

The many sailors who crisscross the "Big Blue" have known for ages that, if the navigation is relatively easy, meteorology represents a particularly difficult constraint to apprehend. Indeed, if the coasts are mostly steep and the dangers very localized, if the tides are almost negligible, if the currents are only to be taken into account in well-defined areas, the major difficulty comes from a capricious meteorology, difficult to predict, can represent a real danger by his changing moods, sudden, even brutal. Read more …

Introduction to Marine Weather [2021]

The new tutorial " Introduction to Marine Weather »Is available on the Amazon Store for e-reader and cross-platform applications Kindle.

Complete overhaul of the work initially published in 2015, new layout, clearer and more readable in portrait mode, complete revision of the text, updated videos and illustrations.

From basic knowledge to interpreting GRIB files, an educational path to help better understand the weather, the one he will do, and master the weather-routing and navigation applications, like SailGrib, Weather4D, and many others.

  • 130 pages
  • 15 videos
  • 100 illustrations

This work replaces the previous deleted.

[Update 10 more 2021] Update V.1.3 online at Amazon.co.uk. Video correction and links.

ECMWF weather data soon open to the public [11st part]

Created in 1975 at the initiative of members of the European Union, the European Center for Medium-Term Meteorological Forecasting is an independent intergovernmental organization with, until this day, is located in Reading, England. ECMWF is funded by 22 member states and 12 associated states. It employs nearly 350 people, and its supercomputer equipment is one of the largest in Europe. For about fifteen years, ECMWF forecasts tend to be among the most accurate in the world, according to verification data from the World Meteorological Organization (WMO). ECMWF is currently headed by French meteorologist Florence Rabier, who worked at the local Meteorological Office of Météo-France.

But, since the advent of Brexit, the situation has changed. UK no longer part of the EU, CEPMMET must move to a European country, and this may have, for weather data users, consequences… positives. Read more …

Weather4D introduced the mapping [Update]

[SHIFT of 15/10/2014]

The latest version 1.08-69 is a major update that introduces a novelty of size : the ability to download a, or more, mapping(s) to display the data in the GRIB files. It also offers the free GFS files to 8 days.

The application presents a new icon in the top toolbar that provides standard free access to three types of Basemaps : Blue Marble (by default), OSM (Open Street Map) or a combined Bing Maps – Aerial (Satellite). In the selection window, two associated buttons activate the functions :

  • OK maps : to load cached the contents of the base map, and therefore use it offline.
  • Manage maps : to subscribe to a selection of marine cartography covering the world.

Read more …

The race will take place GRIB

This is an interesting match-racing looming Android applications in the field of Marine Weather. Indeed, since Olivier Bouyssou focused its Android software Weather4D, friendly Henri Laurent, I had the pleasure of meeting at Nautic, has been working hard to bring new features and enhancements to its application SailGrib/WR. In this "digital regatta" he thus marks a formidable opponent, although it has not yet brought the advanced features of iOS Android. This tactic to stay ahead by standing firmly in front of his opponent is often used by the best sailors. Read more …

Weather4D adds fine mesh WRF forecasts

model WRFThe latest release 1.05 now adds queries forecast fine mesh. Indeed, last few days, App4Nav society generates its own files fine mesh based on the American model predictions WRF.

WRF (Weather Research and Forecasting) mesoscale is a new generation digital system for weather forecast. It is designed for both operational forecasting and for the purposes of Atmospheric Research. Read more …

Weather4D on Android on how to Pixar

Weather4D basic version is available on Google Play. Free forecasts 24 hours based on the GFS model GRIB files (¹), one evaluation period for 7 days However, you can use all the features without limitation : GFS models, GEM and COAMPS for the weather, FNMOC WW3 for waves and MyOcean for ocean currents and coastal, time range up to 7 days, refreshed 4 times a day. Beyond, a modest annual subscription (10 €) keeps the full functionality of the application. Read more …

SailGrib WR weather routing and Android

SailGrib WRAfter the publication of my previous article on navigation applications, Henri Laurent contacted me to correct the omission of its implementation SailGrib WR, inadvertently passed through the mesh of my initial research. SailGrib SailGrib and WR are on Google Play since early 2013.

Both applications are based on queries and display GRIB files, WR version adds a routing module. Read more …