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

Klamath2025111612_klamath_hefs_csv_hourly.zip16-Nov-2025 09:10 AM PST2383K
North Coast2025111612_NorthCoast_hefs_csv_hourly.zip16-Nov-2025 09:08 AM PST1460K
Russian/Napa2025111612_RussianNapa_hefs_csv_hourly.zip16-Nov-2025 08:26 AM PST2953K
Upper Sacramento2025111612_UpperSacramento_hefs_csv_hourly.zip16-Nov-2025 08:37 AM PST3799K
Feather/Yuba2025111612_FeatherYuba_hefs_csv_hourly.zip16-Nov-2025 08:49 AM PST4250K
Cache/Putah2025111612_cacheputah_hefs_csv_hourly.zip16-Nov-2025 08:47 AM PST1003K
American2025111612_american_hefs_csv_hourly.zip16-Nov-2025 08:47 AM PST3026K
Lower Sacramento2025111612_LowerSacramento_hefs_csv_hourly.zip16-Nov-2025 09:05 AM PST508K
Salinas/Pajaro2025111612_SalinasPajaro_hefs_csv_hourly.zip16-Nov-2025 08:22 AM PST1435K
South Bay2025111612_SouthBay_hefs_csv_hourly.zip16-Nov-2025 08:19 AM PST1806K
Southern California2025111612_SouthernCalifornia_hefs_csv_hourly.zip16-Nov-2025 07:45 AM PST1890K
San Diego/Inland2025111612_SanDiego_Inland_hefs_csv_hourly.zip16-Nov-2025 07:44 AM PST974K
Tulare2025111612_Tulare_hefs_csv_hourly.zip16-Nov-2025 08:47 AM PST1134K
San Joaquin2025111612_SanJoaquin_hefs_csv_hourly.zip16-Nov-2025 09:10 AM PST2702K
North San Joaquin2025111612_n_sanjoaquin_hefs_csv_hourly.zip16-Nov-2025 09:06 AM PST796K
East Sierra2025111612_EastSierra_hefs_csv_hourly.zip16-Nov-2025 08:10 AM PST3239K
Humboldt2025111612_Humboldt_hefs_csv_hourly.zip16-Nov-2025 08:07 AM PST744K

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)