Precipitation, next 15 days
Total water, rain plus melted snow, from each forecast model. Pick a model, or compare two, then step through the maps: 15, 7 and 3 day totals, days 8 to 15, and every day on its own.
Where the numbers come from
The European model (ECMWF), the European AI model (ECMWF AIFS), the American model (GFS) and the GFS ensemble mean, straight from the free NOAA and ECMWF files as each new run comes out. The Kerr blend is the plain average of the four. Each day runs 5 AM to 5 AM Pacific.
Past about a week, the models move around from run to run, so treat days 8 to 15 as where storms could go, not where they will. The Kerr Map has the hour by hour future radar and the 15 day map you can play.