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Short Range Hourly Ensemble CSV File Download

Forecast Groups

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Forecast Group

Filename

Date/Time Last Modified

Size

ID Help Doc

Klamath2025112518_klamath_hefs_csv_hourly.zip25-Nov-2025 01:31 PM PST1913K
North Coast2025112518_NorthCoast_hefs_csv_hourly.zip25-Nov-2025 01:38 PM PST1097K
Russian/Napa2025112518_RussianNapa_hefs_csv_hourly.zip25-Nov-2025 01:38 PM PST2081K
Upper Sacramento2025112518_UpperSacramento_hefs_csv_hourly.zip25-Nov-2025 01:28 PM PST2996K
Feather/Yuba2025112518_FeatherYuba_hefs_csv_hourly.zip25-Nov-2025 01:28 PM PST3317K
Cache/Putah2025112518_cacheputah_hefs_csv_hourly.zip25-Nov-2025 01:27 PM PST702K
American2025112518_american_hefs_csv_hourly.zip25-Nov-2025 01:26 PM PST2710K
Lower Sacramento2025112518_LowerSacramento_hefs_csv_hourly.zip25-Nov-2025 01:43 PM PST212K
Salinas/Pajaro2025112518_SalinasPajaro_hefs_csv_hourly.zip25-Nov-2025 01:39 PM PST963K
South Bay2025112518_SouthBay_hefs_csv_hourly.zip25-Nov-2025 01:39 PM PST1354K
Southern California2025112518_SouthernCalifornia_hefs_csv_hourly.zip25-Nov-2025 01:39 PM PST1555K
San Diego/Inland2025112518_SanDiego_Inland_hefs_csv_hourly.zip25-Nov-2025 01:40 PM PST802K
Tulare2025112518_Tulare_hefs_csv_hourly.zip25-Nov-2025 01:27 PM PST1072K
San Joaquin2025112518_SanJoaquin_hefs_csv_hourly.zip25-Nov-2025 01:28 PM PST2437K
North San Joaquin2025112518_n_sanjoaquin_hefs_csv_hourly.zip25-Nov-2025 01:28 PM PST678K
East Sierra2025112518_EastSierra_hefs_csv_hourly.zip25-Nov-2025 01:48 PM PST2974K
Humboldt2025112518_Humboldt_hefs_csv_hourly.zip25-Nov-2025 01:47 PM PST527K

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

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Forecast Groups Archive


Forecast Group


Start Date

Start Hour
(Forecast Cycle)


End Date

End Hour
(Forecast Cycle)