NDFD DeGRIB Custom Grids - MDL
NDFD DeGRIB Custom Grids
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 images together.
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: https://products.weather.gov/PDD/User_Defined_Grib2_OFFICIAL.pdf (pdf)
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.