User Manual

Observed Rainfall Monitoring (0.1-deg GSMap Now)

  • GSMaP is a blended Microwave-IR product and has been developed in Japan for the Global Precipitation Measurement (GPM) mission with a spatial resolution of 0.1 degree.
  • 24-hr accumulated and the latest hourly rain rate maps are based on the GSMap product and produced by HII
  • Rain intensity is categorized into four groups (light, moderate, heavy, and violent) according to the TMD  

7-day Rainfall Forecast (Coupled WRF-ROMS Model)

  • The first 3-day forecast with the highest spatial resolution of grid spacing at 3 km, while following days are run at grid spacing of 9 km. 
  • Rain intensity is categorized into four groups: light (<10 mm), moderate, (10-35 mm), heavy (35-90 mm), and violent rain (>95 mm) following a 24-hr accumulated rainfall by Thai Meteorological Department (TMD).   
  • The model forecast is issued twice a day by HII for the initial condition at 00 UTC and 12 UTC.
  • The forecast is subject to be changed depending on initial condition, hence please use the most up to date version. 

Cloud Top Temperature (HIMAWARI-8)

  • Estimation of cloud top temperature (CTT) from Himawari-8 provided by JAXA.
  • The estimated CTT map is routinely updated every hour by HII
  • The higher magnitude of the CTT, the more severe weather is expected.


by: Hydro-Informatics Institute (Public Organization)