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

Klamath2025101112_klamath_hefs_csv_hourly.zip11-Oct-2025 09:40 AM PDT2027K
North Coast2025101112_NorthCoast_hefs_csv_hourly.zip11-Oct-2025 09:37 AM PDT1060K
Russian/Napa2025101112_RussianNapa_hefs_csv_hourly.zip11-Oct-2025 09:37 AM PDT1841K
Upper Sacramento2025101112_UpperSacramento_hefs_csv_hourly.zip11-Oct-2025 08:41 AM PDT2957K
Feather/Yuba2025101112_FeatherYuba_hefs_csv_hourly.zip11-Oct-2025 08:40 AM PDT3231K
Cache/Putah2025101112_cacheputah_hefs_csv_hourly.zip11-Oct-2025 09:07 AM PDT553K
American2025101112_american_hefs_csv_hourly.zip11-Oct-2025 09:07 AM PDT2533K
Lower Sacramento2025101112_LowerSacramento_hefs_csv_hourly.zip11-Oct-2025 09:27 AM PDT329K
Salinas/Pajaro2025101112_SalinasPajaro_hefs_csv_hourly.zip11-Oct-2025 09:41 AM PDT647K
South Bay2025101112_SouthBay_hefs_csv_hourly.zip11-Oct-2025 09:41 AM PDT1055K
Southern California2025101112_SouthernCalifornia_hefs_csv_hourly.zip11-Oct-2025 09:43 AM PDT619K
San Diego/Inland2025101112_SanDiego_Inland_hefs_csv_hourly.zip11-Oct-2025 09:43 AM PDT297K
Tulare2025101112_Tulare_hefs_csv_hourly.zip11-Oct-2025 09:22 AM PDT844K
San Joaquin2025101112_SanJoaquin_hefs_csv_hourly.zip11-Oct-2025 08:41 AM PDT1945K
North San Joaquin2025101112_n_sanjoaquin_hefs_csv_hourly.zip11-Oct-2025 09:27 AM PDT596K
East Sierra2025101112_EastSierra_hefs_csv_hourly.zip11-Oct-2025 09:50 AM PDT2611K
Humboldt2025101112_Humboldt_hefs_csv_hourly.zip11-Oct-2025 09:48 AM PDT710K

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)