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

Klamath2025112018_klamath_hefs_csv_hourly.zip20-Nov-2025 12:53 PM PST2191K
North Coast2025112018_NorthCoast_hefs_csv_hourly.zip20-Nov-2025 12:52 PM PST1290K
Russian/Napa2025112018_RussianNapa_hefs_csv_hourly.zip20-Nov-2025 12:53 PM PST2163K
Upper Sacramento2025112018_UpperSacramento_hefs_csv_hourly.zip20-Nov-2025 01:14 PM PST3374K
Feather/Yuba2025112018_FeatherYuba_hefs_csv_hourly.zip20-Nov-2025 01:14 PM PST3948K
Cache/Putah2025112018_cacheputah_hefs_csv_hourly.zip20-Nov-2025 01:19 PM PST714K
American2025112018_american_hefs_csv_hourly.zip20-Nov-2025 01:13 PM PST2874K
Lower Sacramento2025112018_LowerSacramento_hefs_csv_hourly.zip20-Nov-2025 01:40 PM PST347K
Salinas/Pajaro2025112018_SalinasPajaro_hefs_csv_hourly.zip20-Nov-2025 01:32 PM PST1217K
South Bay2025112018_SouthBay_hefs_csv_hourly.zip20-Nov-2025 01:20 PM PST1592K
Southern California2025112018_SouthernCalifornia_hefs_csv_hourly.zip20-Nov-2025 01:31 PM PST1977K
San Diego/Inland2025112018_SanDiego_Inland_hefs_csv_hourly.zip20-Nov-2025 01:32 PM PST989K
Tulare2025112018_Tulare_hefs_csv_hourly.zip20-Nov-2025 01:17 PM PST1095K
San Joaquin2025112018_SanJoaquin_hefs_csv_hourly.zip20-Nov-2025 01:18 PM PST2702K
North San Joaquin2025112018_n_sanjoaquin_hefs_csv_hourly.zip20-Nov-2025 01:17 PM PST787K
East Sierra2025112018_EastSierra_hefs_csv_hourly.zip20-Nov-2025 01:38 PM PST3141K
Humboldt2025112018_Humboldt_hefs_csv_hourly.zip20-Nov-2025 01:40 PM PST555K

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)