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HPC QPF GRIB Files
- The HPC is evaluating whether to continue generating GRIB files of its QPF forecasts. Please use the link at the bottom of this page to let us know if you use any of these GRIB files.
- The HPC is currently making gridded 6-hourly QPF files, in GRIB format at 32km resolution, in addition to the standard Day 3, Days 4-5 and 5-Day total QPF products. The GRIB files are available for download via the
NCEP anonymous FTP server (ftp.hpc.ncep.noaa.gov), under:
/grib/ccYYMMDD
where:
cc = century;
YY = year;
MM = month;
DD = day.
- The files use the following naming convention:
p06m_ccYYMMDDhhfFFF.grb
where:
cc = century;
YY = year;
MM = month;
DD = day;
hh = hour valid from (00, 06, 12, 18);
FFF = forecast hour.
For example, p06m_2000032112f060.grb represents the 6-hourly QPF from
60-66 hours from the 03/20/2000 1200 UTC cycle.
- 24-hour Day 3 (p24m_ccYYMMDDhhf072.grb),
48-hour Days 4-5 (p48m_ccYYMMDDhhf120.grb),
and 5-day total
(p120m_ccYYMMDDhhf120.grb)
are also available
for download.
- These files are usually available around 1100/2300 UTC, with the Days 4-5 and
5-Day available around 2300 UTC.
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Additional information about GRIB format:
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www.weather.gov 
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