|Local forecast by
Degrib: Custom NDFD Grids
Table of Contents:
The official location for the custom grid process is located at:
http://weather.gov/ndfd/select_grib.php. Unfortunately it appears
to be broken.
Fortunately, I had created this page before it was placed there, and since not all of
the information on my page was included in the official site I'm continuing to provide it here.
The concept is that for a given state, say Pennsylvania, the user would need
to download two or more NDFD sectors. The problem with this is that they would
overlap, and they would contain more information than the user would be
interested in. It is also inconvenient for the user to have to mosaic the
What the custom grid service does, is
it grabs a specified rectangle out of the NDFD and returns it as a GRIB2 message to
the user. One thing to keep in mind is that the rectangle is on the NDFD map
projection. It will not appear to be a rectangle unless you project the map.
For more information on the product see:
The form below allows the entry of opposite corners of a defined area no
more than 15 degrees apart. If you are interested in large areas of NDFD area,
you may find the
predefinded data sectors
available from a ftp transfer to be better suited for your task.