About precipitation forecast table
HHFS receives precipitation forecast data from the Hungarian Meteorological Service twice a day. Forecast data are given on a regular grid which covers all subcatchment areas included in HHFS hydrological forecast system. From incoming precipitation forecast data mean areal values are produced for various time intervals and subcatchments using different methods (including HHFS' own developed downscaling and parameter estimation methods). After data processing phase maps and tables are produced in order to give an adequate representation of the forecasts for hydrological purposes.
The meteorological model used by HHFS is run twice a day, namely at 00 UTC and 12 UTC. Products based on the first model run are published on this site shortly after 9 a.m. during summer time (respectively after 8 a.m. in the rest of the year), correspondingly data of the second model run are published after 9 p.m. during summer time (respectively after 8 p.m. in the rest of the year).