Hi,
If you use ncdump -v,Times you can see what specific times were written to the file… Is it the first 15 hours, then nothing? or did it write the whole day but split up into 15 increments instead of 24? That info would be useful for debugging.
Also, I’m not sure what you mean when you say you ran these periods in a “single run”… Did you use a wrfrst file to restart the run? Or did you initialize separate runs on the 4th and 9th? If it’s the later, you would encounter an issue with using MCIP because of the way WRF accumulates precipitation fields. See this thread for info on that: MCIP/WRF Precipitation - MCIP - CMAS CENTER FORUM
Megan