NBM Data Download

Operational Products (NBM v4.0)

NBM Grib2 Files

The master files contain all available elements in Grib2 format (specifications can be found on the NBM Grib2 Specifications Page). Files are in directories where YYYYMMDD is the run date-stamp, and CC is the cycle. File names are as follows: blend.tCCz.core.fXXX.RR.grib2 (for most NBM elements) or blend.tCCz.qmd.fXXX.RR.grib2 (for QMD elements), where CC is the cycle, XXX is the forecast hour, and RR is the region. (Example: blend.t00z.master.f001.co.grib2) There are also limited numbers of other elements available by single file. These files are available for 1-2 days.

Grib2 NBM master files
Format grib2
Regions CONUS (co), Alaska (ak), Hawaii(hi), Puerto Rico(pr), Guam (gu), Oceanic (oc)
FTP ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/blend/prod/blend.YYYYMMDD/CC/grib2/



NBM Full Text Bulletin Files

NBM text files contain bulletins for all available station locations in a single file. Files are as follows, where YYYYMMDD is the run date-stamp, and CC is the cycle. These files come in five types: hourly (blend_nbhtx.tCCz),short-range(blend_nbstx.tCCz),extended-range(blend_nbetx.tCCz), super-extended range (blend_nbxtx.tCCz), and probabilistic (blend_nbptx.tCCz). Specifications can be found on the NBM Text Bulletin Key. These files are available for 1-2 days.

Data can be viewed for specific stations at our NBM Text Bulletin Page.

NBM text bulletin master files
Format ASCII text
Regions all (in one file)
FTP ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/blend/prod/blend.YYYYMMDD/CC/text/
HTTP URL https://nomads.ncep.noaa.gov/pub/data/nccf/com/blend/prod/blend.YYYYMMDD/CC/text/

NBM Grib2 and Text Extended Archive

Both grib2 and text bulletins can also be found for an extended period of time on the Amazon Web Services S3 Explorer at https://noaa-nbm-grib2-pds.s3.amazonaws.com/index.html . The file paths for each data type are as follows, where YYYYMMDD is the run date-stamp, and CC is the cycle hour. The data begins for these products May 18, 2020 and extends through present. 

AWS S3 Explorer data paths by file type
grib2 data https://noaa-nbm-grib2-pds.s3.amazonaws.com/index.html#blend.YYYYMMDD/CC/grib2/
text bulletin https://noaa-nbm-grib2-pds.s3.amazonaws.com/index.html#blend.YYYYMMDD/CC/text/

Experimental Products (NBM v4.1)

There are no experimental products available for public download at this time.

If you desire access to NBM products prior to operational implementation, please email the address noted in the "Contact NBM" portion of this page.


Contact NBM

For further information about the National Blend of Models, please contact The NBM Web Team


You can also join the NBM Mailing List by following sign-up instructions here.