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

Klamath2025102012_klamath_hefs_csv_hourly.zip20-Oct-2025 07:15 AM PDT1991K
North Coast2025102012_NorthCoast_hefs_csv_hourly.zip20-Oct-2025 07:21 AM PDT1159K
Russian/Napa2025102012_RussianNapa_hefs_csv_hourly.zip20-Oct-2025 07:22 AM PDT1771K
Upper Sacramento2025102012_UpperSacramento_hefs_csv_hourly.zip20-Oct-2025 06:52 AM PDT2769K
Feather/Yuba2025102012_FeatherYuba_hefs_csv_hourly.zip20-Oct-2025 06:57 AM PDT2877K
Cache/Putah2025102012_cacheputah_hefs_csv_hourly.zip20-Oct-2025 07:10 AM PDT554K
American2025102012_american_hefs_csv_hourly.zip20-Oct-2025 06:57 AM PDT2372K
Lower Sacramento2025102012_LowerSacramento_hefs_csv_hourly.zip20-Oct-2025 07:38 AM PDT235K
Salinas/Pajaro2025102012_SalinasPajaro_hefs_csv_hourly.zip20-Oct-2025 07:26 AM PDT392K
South Bay2025102012_SouthBay_hefs_csv_hourly.zip20-Oct-2025 07:24 AM PDT796K
Southern California2025102012_SouthernCalifornia_hefs_csv_hourly.zip20-Oct-2025 07:37 AM PDT443K
San Diego/Inland2025102012_SanDiego_Inland_hefs_csv_hourly.zip20-Oct-2025 07:37 AM PDT256K
Tulare2025102012_Tulare_hefs_csv_hourly.zip20-Oct-2025 07:01 AM PDT787K
San Joaquin2025102012_SanJoaquin_hefs_csv_hourly.zip20-Oct-2025 07:03 AM PDT1779K
North San Joaquin2025102012_n_sanjoaquin_hefs_csv_hourly.zip20-Oct-2025 07:00 AM PDT519K
East Sierra2025102012_EastSierra_hefs_csv_hourly.zip20-Oct-2025 07:38 AM PDT2520K
Humboldt2025102012_Humboldt_hefs_csv_hourly.zip20-Oct-2025 07:37 AM PDT647K

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)