Russian River HEFS hourly hindcasts - January 2026

Contains NOAA/NWS Hydrologic Ensemble Forecast Service (HEFS) hourly hindcasts out to 15-day lead times for all sites in the Russian River system in California. Includes hindcasts from the three different sources listed below including scaled events. Also includes observations (historical hourly simulations) run for all sites in the system. All forecasts and observations are archived in .csv format. 1. HEFS_GEFSv12: ‘Frozen’ GEFSv12 meteorological forcings (1989-2019) plus operational GEFSv12 forcings (2019-2023) for all lead times run through the HEFS model for all Lake Sonoma forecast sites. Dates: ‘1989-10-01’ to ‘2023-09-30’ Scaled event year [scaling] groupings: 1986 [200,180,160,140,130,120,110]; 1995 [200,180,160,140,130,120,110]; 1997 [200,180,160,140,130,120,110]; 2005 [200,180,160,140,130,120,110] 2. HEFS_GEFSv12_cbpr: ‘Frozen’ GEFSv12 meteorological forcings (1989-2019) plus operational GEFSv12 forcings (2019-2023) for all lead times run through the HEFS model with Conditionally Biased Penalized Regression (CBPR) postprocessing [MEFP] for all Lake Sonoma forecast sites. Dates: ‘1989-10-01’ to ‘2023-09-30’ Scaled event year [scaling] groupings: 1986 [200,180,160,140,130,120,115,110,105]; 1995 [200,180,160,150,140,130,125,120,115,110]; 1997 [200,180,160,140,130,120,110]; 2005 [200,180,160,140,130,120,110] 3. HEFS_RFC_cbpr: RFC QPF meteorological forcings for leads 1:6 and operational GEFSv12 meteorological forcings for leads 7:15 run through the HEFS model with Conditionally Biased Penalized Regression (CBPR) postprocessing [MEFP] for all Lake Sonoma forecast sites.