<p>Looking at the index files in <code>https://ftp.ncep.noaa.gov/data/nccf/com/gfs/prod/</code>, there's no probability of precipitation (POP) data provided. (There is a probability of frozen precipitation.)</p>
<p>Is there a way to derive a POP (using the NWS 0.01 inch standard, or some other standard) from the other values provided like the precipitation rate (PRATE) value?</p>
<p>The model output statistics in the GFS data provides POP values for a number of domestic airports, but I'm interested in worldwide, hourly POP.</p>

<meteorology><gfs>
Determining probability of precipitation from GFS data
simchikoops
# Determining probability of precipitation from GFS data

(Asked by: username_0 on 2021-04-07)

Looking at the index files in `https://ftp.ncep.noaa.gov/data/nccf/com/gfs/prod/`, there's no probability of precipitation (POP) data provided. (There is a probability of frozen precipitation.)

Is there a way to derive a POP (using the NWS 0.01 inch standard, or some other standard) from the other values provided like the precipitation rate (PRATE) value?

The model output statistics in the GFS data provides POP values for a number of domestic airports, but I'm interested in worldwide, hourly POP.

**Tags:** meteorology, gfs


---

## 0 answers

