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

Klamath2026020212_klamath_hefs_csv_daily.zip02-Feb-2026 07:55 AM PST1217K
North Coast2026020212_NorthCoast_hefs_csv_daily.zip02-Feb-2026 07:54 AM PST1149K
Russian/Napa2026020212_RussianNapa_hefs_csv_daily.zip02-Feb-2026 07:56 AM PST1539K
Upper Sacramento2026020212_UpperSacramento_hefs_csv_daily.zip02-Feb-2026 07:34 AM PST1451K
Feather/Yuba2026020212_FeatherYuba_hefs_csv_daily.zip02-Feb-2026 07:36 AM PST2212K
Cache/Putah2026020212_cacheputah_hefs_csv_daily.zip02-Feb-2026 07:49 AM PST215K
American2026020212_american_hefs_csv_daily.zip02-Feb-2026 07:49 AM PST1808K
Salinas/Pajaro2026020212_SalinasPajaro_hefs_csv_daily.zip02-Feb-2026 08:05 AM PST569K
South Bay2026020212_SouthBay_hefs_csv_daily.zip02-Feb-2026 08:04 AM PST436K
Southern California2026020212_SouthernCalifornia_hefs_csv_daily.zip02-Feb-2026 08:12 AM PST1197K
San Diego/Inland2026020212_SanDiego_Inland_hefs_csv_daily.zip02-Feb-2026 08:17 AM PST683K
Tulare2026020212_Tulare_hefs_csv_daily.zip02-Feb-2026 07:49 AM PST869K
San Joaquin2026020212_SanJoaquin_hefs_csv_daily.zip02-Feb-2026 07:53 AM PST1319K
North San Joaquin2026020212_n_sanjoaquin_hefs_csv_daily.zip02-Feb-2026 07:49 AM PST534K
East Sierra2026020212_EastSierra_hefs_csv_daily.zip02-Feb-2026 08:18 AM PST2094K
Humboldt2026020212_Humboldt_hefs_csv_daily.zip02-Feb-2026 08:16 AM PST814K
Water Supply Indices2026020212_WSI_hefs_csv_daily.zip02-Feb-2026 08:23 AM PST217K

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

End Date