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In short

PocketGrib is a free Android teaching app developed by Nicko Brennan. This app is recommended for coastal sailors. This is a good app to access several models.


Really good for sailing weather forecasts

Gives pretty accurate wind data for sailing on the Chesapeake Bay

Easy to use map interface

But I love the ability to run the grib files on my phone

Really useful for getting large scale picture good for route planning

It has been accurate and a great teaching tool

Very accurate and ideal for coastal sailors both at home or overseas

Works very well on my Samsung phone and tablet

This is a very useful app for all weather watchers

Great to get forecasts for a few days as I sail a lot

Unfortunately it keeps loosing the background map

Grib files sadly don't indicate min

Can no longer download in poor signal area

And you have to relocate from the Bering Straights every time

The wave forecast is not shown properly

Small GRIB file size is fast to download on the slowest wifi


With PocketGrib GRIB file viewer you can easily download, view and analyse global weather data. Wind, preciptation, pressure, temperature and wave data extracted from GRIB files are displayed through our simple interface. This GRIB viewer is perfect for sailors (both sailing and in the pub), windsurfers, storm chasers, outdoor enthusiasts, amateur and professional meteorologists. Features - Choose your map location and have weather information overlaid - Mapped weather can be animated - Weather can be viewed as a meteogram (graph) or raw data - Configurable download to minimise file sizes (great for roaming) - GRIB files can be downloaded to your PC - Displays online or offline PocketGrib downloads and displays the following weather types: - Wind speed and direction (10 m above mean sea level) - Precipitation (rain, snow etc) - Pressure - Air temperature - Waves (including Mediterranean and Black Sea) - Cloud cover - Relative humidity - CAPE (Convective Atmospheric Potential Energy) - Current (Atlantic only) Direct download of GRIB data from NOAA's GFS (Global Forecast System) model - Forecasts up to 8 days - Data steps: 3hr, 6hr, 12hr - Worldwide Coverage - Resolution: 0.25°, 0.5°, 1°, 2° - Data updated 4 times a day (every 6 hours) Also support for COAMPS, WW3, NOGAPS, RTOFS (Currents) and FNMOC WW3 (Mediterranean wave) models. By downloading only what the user needs it it possible to keep the GRIB files small which makes it especially convenient for low bandwidth regions or when roaming internationally. GRIB forecasts are published without human intervention or review. Therefore some knowledge and awareness is required by the end user. Most GRIB models do NOT accurately forecast hurricanes and tropical cyclones so their use should be combined with specific hurricane and tropical cyclone forecasts.

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