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Free GRIB Files Provided by GLOBAL MARINE NETWORKS
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Global Marine Networks (GMN) offers 7 day wind forecasts of the world as a free public service via its GRIB Mail Robot. These forecasts are generated daily for every region of the world. GRIB forecasts are based on the National Weather Service Wave Watch III model yielding highly accurate forecasts every 6 hours for up to 7 days into the future. All GRIB forecasts are delivered via e-mail and optimized specifically for low bandwidth wireless connections. You assume any and all risk associated with the use of these GRIB files.

There is NO technical support provided for these Free GRIB files. If you are looking for supported weather information, please view the favorite GMN Weather Data Package. It includes WeatherNet and GRIB Explorer. WeatherNet is a subscription service designed specifically to download weather products via wireless connections. GRIB Explorer is a sophisticated GRIB file viewer with a simple user interface.

To receive these free GRIB files, you must have email (which is data) capability. If you will be requesting these files over a satellite connection, we recommend you use GMN’s XGate Wireless Email software. With its compression technology and mid-file restart you will realize significant airtime savings.

In addition, you must have a way to view these GRIB files. There may still be some free GRIB viewers that can be downloaded off the internet; however, we recommend GRIB Explorer software for viewing GRIB files.

If you are unfamilar with GRIB, read What's a GRIB a short story on GRIB files and the additional information below.

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Purchases our most popular WeatherNet Data Package with GRIB Explorer included

Our most popular weather data package. Take some guess work out of planning voyages with all this weather and ocean data plus the power of GRIB at your fingertips. For Windows OS systems.

  • Purchase User's Favorite Weather Data Package    


Purchase GRIB Explorer Software sold separately
  • Purchase GRIB Explorer Software

For your convenience your account will be set to automatically renew. You will receive an email alerting you of this process one week before your next renewal. If you would like to stop the subscription at that time, please notify us via email.

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GMN produces 7 day GRIB forecasts for the entire world. The GRIB files are generated at 0015, 0615, 1215, 1815 GMT everyday. The GMN GRIB robot generates GFS GRIB files if you request any static region which contains an interior body of water (such as the Mediterranean, Baltic, Black Sea, etc.). If you request a custom region which contains an interior body of water, you will receive a blank file.

* * * * * * * DOWNLOADING GMN GRIB FILES * * * * * * *

To Request a Free GRIB File by email: Place a valid KEY as described below in the SUBJECT line and send the email to: gmngrib@globalmarinenet.net
Please NOTE: ***KEYS are CASE SENSITIVE***

Use the following examples when creating a KEY to request a GRIB file:

BASIC EXAMPLES:

By entering the KEY alone, you will receive one email with a 24-hour forecast.
Example:     Atlantic - Will return one email with a GRIB file containing a 24 hour forecast.

You can specify the time of the forecast by entering the time after the KEY on the subject line. Valid times are 6 to 126 hours in increments of 6 hours. i.e. 12, 24, 36, 48, 72 are all valid times.

Example:     Atlantic 24 48 72 - Will return three 3 emails, each containing a separate forecast for the Atlantic region. Please Note: On average, each email will be 3 - 5 Kb in size.

To perform weather animation specify 1day, 2day, 3day, 4day, or 5day worth of weather, sampled at 6 hour intervals.

Example:     Atlantic 3day - Will return one compressed GRIB file, 30-40K in size that contains 3 days worth of forecasts at 6 hour intervals.
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CUSTOM REGIONS:

Replace the "KEY" with the center Lat:Lon coordinates.
The syntax for custom regions is: LAT[NS]:LON[EW]:RANGE [24 48 .. | 1day | 2day ...] The RANGE is Optional and is in nautical miles. The default RANGE is 1200 nautical miles; if none is specified.

Example:     18N:67W:600 3day - Will return a 3day forecast GRIB that is 600x600 miles centered at 18N and 67W.

Example:     55S:70W 24 48 72 - Will return 3 GRIB files 1200x1200 miles centered at 55S and 70W.
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AUTOMATIC SCHEDULE:

Entering a number followed by the word "times" returns a GRIB file to you everyday at 5AM EST for the number of days entered.

Example:     7times Caribbean 3day - Will return the Caribbean 3day forecast everyday for 7 days.
NOTE: "7times" must be entered as the first command on the Subject line. Entering "Caribbean 7times 3day" is incorrect. Do not put a space between the 7 and times and time must be in lower case.

TO CANCEL AN AUTOMATIC SCHEDULE: To cancel a request, simply send an email with the word cancel on the subject line. NOTE: The word cancel must be in lower case.

A NOTE ON SIZE: The more data you request the more efficient the compression.

Example:     Caribbean 24 48 72 - Will return 3 GRIB files, each 1.5-2K in size for a total of around 6K.

Example:     Caribbean 3day - Will return 12 forecasts in one file that is 11K.

GRIB files are compressed in bzip2 format and are about 10Kb in size per day for large regions and about 4K per day for the Caribbean. GRIB Explorer, MaxSea, MacENC, WindPlot and some other GRIB viewer programs can display these GRIB files directly. Users of other GRIB viewing software may need a special bunzip2 utility to unpack these files.

CHART OF KEY REGIONS

Key Description
Pacific Pacific Region Forecast Data (includes Gulf of Alaska data)
Atlantic West Atlantic (US) Region Forecast Data
Canada East Canada Region Forecast Data
Caribbean Caribbean Basin and Gulf of Mexico
Drake Drake Passage
East Atlantic East Atlantic Region Forecast Data
Great Lakes Great Lakes Region Forecast Data
North Europe North Europe Region Forecast Data
Argentina Chile, Argentina Region Forecast Data
South Africa South Africa Region Forecast Data
Brazil Brazil Region Forecast Data
New Zealand New Zealand Region Forecast Data
Mediterranean Mediterranean Region Forecast Data
Scandinavia Scandinavia Region Forecast Data
Barents Barents Sea Region Forecast Data
Baffin Baffin Bay Region Forecast Data
WAlaska West Alaska Region Forecast Data
Vancouver Vancouver Region Forecast Data
Central N Pacific Central North Pacific Region Forecast Data
Central S Pacific Central South Pacific Region Forecast Data
S S Pacific South Pacific Region Forecast Data
Central Pacific Central Pacific Region Forecast Data
Chile Peru Chile and Peru Region Forecast Data
Central America Central America Region Forecast Data
S S Atlantic South Atlantic Region Forecast Data
Madagascar Madagascar Region Forecast Data
Indian Indian Region Forecast Data
N Indian North Indian Region Forecast Data
WKergelen West Kergelen Region Forecast Data
Kergelen Kergelen Region Forecast Data
S Australia South Australia Region Forecast Data
Indonesia Australia Indonesia and Australia Region Forecast Data
Indonesia New Zealand Indonesia and New Zealand Region Forecast Data
China China Region Forecast Data
W Pacific West Pacific Region Forecast Data
N Japan North Japan Region Forecast Data
TasmanSea Tasman Sea 30-50S, 140-180E
DaimlerChrysler 60-10N, 75-0W
CapeTownRio 20-30S, 48W-25E
SydneyHobart 2-44S, 146-155E
NewportBermuda 42-32N, 74-64W
Central Atlantic Central Atlantic Region Forecast Data


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Turbocharge your wireless data connection with compression software by Global Marine Networks!


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Last modified: 08/24/2010