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

Long Range Daily Ensemble CSV File Download

Forecast Groups

Forecast Group

Filename

Date/Time Last Modified

Size

Klamath2026041912_klamath_hefs_csv_daily.zip19-Apr-2026 06:58 AM PDT1181K
North Coast2026041912_NorthCoast_hefs_csv_daily.zip19-Apr-2026 06:58 AM PDT1147K
Russian/Napa2026041912_RussianNapa_hefs_csv_daily.zip19-Apr-2026 07:01 AM PDT1514K
Upper Sacramento2026041912_UpperSacramento_hefs_csv_daily.zip19-Apr-2026 07:55 AM PDT1439K
Feather/Yuba2026041912_FeatherYuba_hefs_csv_daily.zip19-Apr-2026 08:06 AM PDT2185K
Cache/Putah2026041912_cacheputah_hefs_csv_daily.zip19-Apr-2026 08:05 AM PDT215K
American2026041912_american_hefs_csv_daily.zip19-Apr-2026 08:05 AM PDT1793K
Salinas/Pajaro2026041912_SalinasPajaro_hefs_csv_daily.zip19-Apr-2026 07:08 AM PDT556K
South Bay2026041912_SouthBay_hefs_csv_daily.zip19-Apr-2026 07:05 AM PDT414K
Southern California2026041912_SouthernCalifornia_hefs_csv_daily.zip19-Apr-2026 07:10 AM PDT893K
San Diego/Inland2026041912_SanDiego_Inland_hefs_csv_daily.zip19-Apr-2026 07:27 AM PDT585K
Tulare2026041912_Tulare_hefs_csv_daily.zip19-Apr-2026 08:14 AM PDT822K
San Joaquin2026041912_SanJoaquin_hefs_csv_daily.zip19-Apr-2026 08:34 AM PDT1303K
North San Joaquin2026041912_n_sanjoaquin_hefs_csv_daily.zip19-Apr-2026 08:29 AM PDT528K
East Sierra2026041912_EastSierra_hefs_csv_daily.zip19-Apr-2026 07:31 AM PDT1998K
Humboldt2026041912_Humboldt_hefs_csv_daily.zip19-Apr-2026 07:30 AM PDT723K
Water Supply Indices2026041912_WSI_hefs_csv_daily.zip19-Apr-2026 08:37 AM PDT215K

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

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Forecast Groups Archive

Forecast Group

Start Date

End Date