The program to generate and display weather forecast maps from the NCEP data
Quick start guide


For the first time, please follow Grib Data Download Wizard

  • The program features:
  • Download instant files from the NCEP hosts (NOMADS).
  • On download, select data by the complete set of parameters, as defined by the GRIB2 filter tool.
  • Load weather forecast data at the program startup from the local grib files.
  • Load shape-file maps (contours) and overlay them on a sequence weather maps just loaded.
  • For a particular date-time slot and forecast time, generate and display a weather forecast map for a particular grib code, level and height.
  • Select a region of interest by specifying a city as a region center and region size, or typing a center point longitude-latitude and region size, or interactively from the Open Street Map view.
  • Define visual appearance of the map by selecting ramp color table, font face and size, line color etc.
  • Save opened file names and all other settings into the program INI file that will be used next time
  • Navigate and automatically open grib code-level planes for a date-time-forecast slot selected
  • Zoom and scroll the weather map and vector overlays to any resolution to see more details
  • The program is used for:
  • Quick and easy access to instant weather forecast data of the NCEP center.
  • Download many data sets at once: by several days, many numerical model run times and many forecast times, by a variable time step and any combinations of grib code-level-heights tags.
  • Filter data on the server to save bandwidth, downloading time and disk space, extensive set of parameters of the NCEP GRIB2 filter tool is implemented.
  • Wise grib file loading: a grib file is treated as a sequence of the code-level-height planes, loaded separately, so they have difffferent attributes like ramp color tables, and the grib data planes are only loaded when necessary.
  • Straightforward GIS approach to vector overlays, standard ESRI Shape is used for geography attributes of the surface, orography and so on.
  • All the Natural Earth shape files are usefull.
  • Each shape-file has its own visual parameters like line and text color, line style, etc.
  • All the data are projected into the geographic projection (x,y are decimal degrees), the working region is selected by a city to bind, raw latitude-longitude coordinate, or modern interactive approach by the OSM tiled view.

Open local files


To open local data (grib2 and shape files) click the Open File button. Open Files

It brings the Startup files dialog window.

  • The upper part of the window is used to load gridded data, the lower is to load vector shapes data.
  • To load GRIB2 files click the Plus button at the bottom of the Grib layers list.
  • Navigate to a subfolder with GFS grib files and select the files to load.
  • To load shape files with contours (coastline and populated places) click the Plus button at the bottom of the Contours list.
  • Select shape files from the fixed folder Import/ Shp.
  • Download the other Natural Earth shape files, place them to the Import/ Shp folder and open them as usual.
  • Select visual attributes of contour files. Most attributes are obvious, but the DBF-params attribute is a little special.
  • The DBF-params string defines the name of DBF field used for reading and ranging the place labels. For example, if the populated places names are stored in the field with the name NAME and the population values are stored in the field with the name POP_MAX, the DBF-params string should be as name;pop_max.
  • The title Startup means that you should not do the file selection again. Click the Save button and the configuration just made will be saved into the INI file and used in the next program startup.

Grib2 download manager



To load grib2 files from the NOMADS servers click the Download button. Download

It brings the Download Grib2 data dialog window.

Settings manager


To manage the program settings click the Settings button.

The Settings dialog window consists of the two panels, the Interface settings and the Grib palettes list.

Contact Me
Send me your feedback, comments, and suggestions, please.
Email to:
Copyright ©2017-2019 BadProgrammer. All rights reserved.