National Weather Service California-Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

Short Range Hourly Ensemble CSV File Download

Forecast Groups

Help \"Help\"
Forecast Group

Filename

Date/Time Last Modified

Size

ID Help Doc

Klamath2026060312_klamath_hefs_csv_hourly.zip03-Jun-2026 07:07 AM PDT1466K
North Coast2026060312_NorthCoast_hefs_csv_hourly.zip03-Jun-2026 07:08 AM PDT811K
Russian/Napa2026060312_RussianNapa_hefs_csv_hourly.zip03-Jun-2026 07:10 AM PDT764K
Upper Sacramento2026060312_UpperSacramento_hefs_csv_hourly.zip03-Jun-2026 06:55 AM PDT2108K
Feather/Yuba2026060312_FeatherYuba_hefs_csv_hourly.zip03-Jun-2026 06:55 AM PDT2064K
Cache/Putah2026060312_cacheputah_hefs_csv_hourly.zip03-Jun-2026 06:57 AM PDT315K
American2026060312_american_hefs_csv_hourly.zip03-Jun-2026 06:53 AM PDT2050K
Lower Sacramento2026060312_LowerSacramento_hefs_csv_hourly.zip03-Jun-2026 07:27 AM PDT194K
Salinas/Pajaro2026060312_SalinasPajaro_hefs_csv_hourly.zip03-Jun-2026 07:21 AM PDT138K
South Bay2026060312_SouthBay_hefs_csv_hourly.zip03-Jun-2026 07:13 AM PDT223K
Southern California2026060312_SouthernCalifornia_hefs_csv_hourly.zip03-Jun-2026 07:21 AM PDT195K
San Diego/Inland2026060312_SanDiego_Inland_hefs_csv_hourly.zip03-Jun-2026 07:21 AM PDT63K
Tulare2026060312_Tulare_hefs_csv_hourly.zip03-Jun-2026 06:57 AM PDT767K
San Joaquin2026060312_SanJoaquin_hefs_csv_hourly.zip03-Jun-2026 07:08 AM PDT1452K
North San Joaquin2026060312_n_sanjoaquin_hefs_csv_hourly.zip03-Jun-2026 07:04 AM PDT343K
East Sierra2026060312_EastSierra_hefs_csv_hourly.zip03-Jun-2026 07:22 AM PDT1916K
Humboldt2026060312_Humboldt_hefs_csv_hourly.zip03-Jun-2026 07:28 AM PDT348K

Note 1: Data represented in the files are in kcfs (thousands of cubic feet per second).

Note 2: Each location includes 44 ensemble members with the first column starting with year 1980 and the last column ending with year 2023. Each historical year is more meaningful beyond the first couple weeks when climatology drives the spread in the ensemble.

Note 3: On October 20, 2022 the Central Coast forecast group was split into two forecast groups (Salinas/Pajaro and South Bay) and the Southern California forecast group was split into two forecast groups (Southern California and San Diego/Inland).

Individual Points

Enter desired location(s) below (some older browsers may allow only one file download at a time):


Forecast Groups Archive


Forecast Group


Start Date

Start Hour
(Forecast Cycle)


End Date

End Hour
(Forecast Cycle)