The Weather Forecasting Forum

Jeff,

I have the 6th question and hope you don’t mind answering it.
6th Question:
At 14 UTC, I wanted to download GRIB files for 15 UTC and went to MT.gfs_CY.12 directory and found that fh.003 files had not been released yet. Later, I found that the fh.003 file was actually released at 15:40 UTC ...

Dear Kevin,
Thank you very much for your nice diagram to make me clear which file is NWS and WAFS files.
But I have to say sorry that I have read the web-page which your hyperlink points to and found it difficult to understand the content and difficult to apply the content to my project. Actually ...

Hi Jeff,

Regarding Question 1, I have read the GRIB documentation which is included in the PCGRIDDS32/DOC directory, and understood that:
NWS GRIB files are non-WAFS GRIB data files and data for the entire grid are stored together as a single group in NWS GRIB data files. No pre-processing of NWS ...

Jeff,
I am doing a project which considers wind effects on aircrafts and the wind data used are from GRIB files. I have planned to use the GRIB files from NWS/NCEP FTP Servers rather than from Canadian Meteorological Center (CMC). I now have 5 questions concerning the download of GRIB files, and I ...