This session focuses on precipitation observation, modeling, estimation, and applications of in situ and remotely sensed precipitation products. Topics include, but are not limited to (1) precipitation processes and modeling; (2) advances in remote sensing of precipitation from satellite and radar platforms; (3) recent development pertaining to fusion and down-scaling of precipitation products; (4) assimilation of precipitation and precipitation related variables in NWP models; and (5) impacts of improving precipitation estimates on hydrologic and land surface modeling. We particularly encourage novel work related to assimilation of precipitation products into numerical weather prediction models. Please contact the session organizers: Yu Zhang (yu.zhang@noaa.gov), Paul Kucera (pkucera@ucar.edu) and/or Emad Habib (habib@louisiana.edu).