National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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NAPA RIVER - SAINT HELENA (SHEC1)
Latitude: 38.51º NLongitude: 122.45º WElevation: 195 Feet
Location: Napa County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: Mar 18 2024 at 2:59 PM PDTNext Issuance: Mar 19 2024 at 9:00 AM PDT
Monitor Stage: 16.0 FeetFlood Stage: 18.0 Feet

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Napa River - Saint Helena (SHEC1)
#
# File Generation Time:  03/18/2024 at 02:59 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/13/2024 at 05:00 PM PDT
# Maximum Observed Stage:                       2.6 Feet
# Maximum Observed Flow:                        150 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/18/2024 at 03:00 PM PDT
# Maximum Forecast Stage:                       2.2 Feet
# Maximum Forecast Flow:                        93 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/13/2024 02 PM PDT             2.6            150                        Normal
  03/13/2024 03 PM PDT             2.6            150         0              Normal
  03/13/2024 04 PM PDT             2.6            150         0              Normal
  03/13/2024 05 PM PDT             2.6            150         0              Normal
  03/13/2024 06 PM PDT             2.6            148         -              Normal
  03/13/2024 07 PM PDT             2.6            147         -              Normal
  03/13/2024 08 PM PDT             2.6            148         +              Normal
  03/13/2024 09 PM PDT             2.6            147         -              Normal
  03/13/2024 10 PM PDT             2.6            147         0              Normal
  03/13/2024 11 PM PDT             2.6            143         -              Normal
  03/14/2024 12 AM PDT             2.6            143         0              Normal
  03/14/2024 01 AM PDT             2.6            143         0              Normal
  03/14/2024 02 AM PDT             2.6            143         0              Normal
  03/14/2024 03 AM PDT             2.6            142         -              Normal
  03/14/2024 04 AM PDT             2.6            142         0              Normal
  03/14/2024 05 AM PDT             2.6            142         0              Normal
  03/14/2024 06 AM PDT             2.6            140         -              Normal
  03/14/2024 07 AM PDT             2.6            140         0              Normal
  03/14/2024 08 AM PDT             2.6            139         -              Normal
  03/14/2024 09 AM PDT             2.6            139         0              Normal
  03/14/2024 10 AM PDT             2.6            139         0              Normal
  03/14/2024 11 AM PDT             2.6            137         -              Normal
  03/14/2024 12 PM PDT             2.6            137         0              Normal
  03/14/2024 01 PM PDT             2.5            136         -              Normal
  03/14/2024 02 PM PDT             2.5            136         0              Normal
  03/14/2024 03 PM PDT             2.5            134         -              Normal
  03/14/2024 04 PM PDT             2.5            133         -              Normal
  03/14/2024 05 PM PDT             2.5            131         -              Normal
  03/14/2024 06 PM PDT             2.5            131         0              Normal
  03/14/2024 07 PM PDT             2.5            130         -              Normal
  03/14/2024 08 PM PDT             2.5            130         0              Normal
  03/14/2024 09 PM PDT             2.5            128         -              Normal
  03/14/2024 10 PM PDT             2.5            128         0              Normal
  03/14/2024 11 PM PDT             2.5            127         -              Normal
  03/15/2024 12 AM PDT             2.5            125         -              Normal
  03/15/2024 01 AM PDT             2.5            125         0              Normal
  03/15/2024 02 AM PDT             2.5            124         -              Normal
  03/15/2024 03 AM PDT             2.5            124         0              Normal
  03/15/2024 04 AM PDT             2.5            124         0              Normal
  03/15/2024 05 AM PDT             2.5            124         0              Normal
  03/15/2024 06 AM PDT             2.5            121         -              Normal
  03/15/2024 07 AM PDT             2.5            124         +              Normal
  03/15/2024 08 AM PDT             2.5            122         -              Normal
  03/15/2024 09 AM PDT             2.5            122         0              Normal
  03/15/2024 10 AM PDT             2.5            122         0              Normal
  03/15/2024 11 AM PDT             2.4            118         -              Normal
  03/15/2024 12 PM PDT             2.5            122         +              Normal
  03/15/2024 01 PM PDT             2.4            119         -              Normal
  03/15/2024 02 PM PDT             2.5            122         +              Normal
  03/15/2024 03 PM PDT             2.5            124         +              Normal
  03/15/2024 04 PM PDT             2.5            121         -              Normal
  03/15/2024 05 PM PDT             2.4            119         -              Normal
  03/15/2024 06 PM PDT             2.4            118         -              Normal
  03/15/2024 07 PM PDT             2.4            118         0              Normal
  03/15/2024 08 PM PDT             2.4            118         0              Normal
  03/15/2024 09 PM PDT             2.4            116         -              Normal
  03/15/2024 10 PM PDT             2.4            119         +              Normal
  03/15/2024 11 PM PDT             2.4            119         0              Normal
  03/16/2024 12 AM PDT             2.4            118         -              Normal
  03/16/2024 01 AM PDT             2.4            116         -              Normal
  03/16/2024 02 AM PDT             2.4            115         -              Normal
  03/16/2024 03 AM PDT             2.4            113         -              Normal
  03/16/2024 04 AM PDT             2.4            113         0              Normal
  03/16/2024 05 AM PDT             2.4            112         -              Normal
  03/16/2024 06 AM PDT             2.4            112         0              Normal
  03/16/2024 07 AM PDT             2.4            112         0              Normal
  03/16/2024 08 AM PDT             2.4            110         -              Normal
  03/16/2024 09 AM PDT             2.4            110         0              Normal
  03/16/2024 10 AM PDT             2.4            109         -              Normal
  03/16/2024 11 AM PDT             2.4            109         0              Normal
  03/16/2024 12 PM PDT             2.4            109         0              Normal
  03/16/2024 01 PM PDT             2.4            109         0              Normal
  03/16/2024 02 PM PDT             2.4            108         -              Normal
  03/16/2024 03 PM PDT             2.4            106         -              Normal
  03/16/2024 04 PM PDT             2.4            108         +              Normal
  03/16/2024 05 PM PDT             2.4            106         -              Normal
  03/16/2024 06 PM PDT             2.4            106         0              Normal
  03/16/2024 07 PM PDT             2.3            105         -              Normal
  03/16/2024 08 PM PDT             2.3            105         0              Normal
  03/16/2024 09 PM PDT             2.3            105         0              Normal
  03/16/2024 10 PM PDT             2.3            105         0              Normal
  03/16/2024 11 PM PDT             2.3            103         -              Normal
  03/17/2024 12 AM PDT             2.3            103         0              Normal
  03/17/2024 01 AM PDT             2.3            103         0              Normal
  03/17/2024 02 AM PDT             2.3            102         -              Normal
  03/17/2024 03 AM PDT             2.3            101         -              Normal
  03/17/2024 04 AM PDT             2.3            102         +              Normal
  03/17/2024 05 AM PDT             2.3            102         0              Normal
  03/17/2024 06 AM PDT             2.3            101         -              Normal
  03/17/2024 07 AM PDT             2.3            101         0              Normal
  03/17/2024 08 AM PDT             2.3            101         0              Normal
  03/17/2024 09 AM PDT             2.3            101         0              Normal
  03/17/2024 10 AM PDT             2.3             99         -              Normal
  03/17/2024 11 AM PDT             2.3            101         +              Normal
  03/17/2024 12 PM PDT             2.3             99         -              Normal
  03/17/2024 01 PM PDT             2.3             98         -              Normal
  03/17/2024 02 PM PDT             2.3             99         +              Normal
  03/17/2024 03 PM PDT             2.3             98         -              Normal
  03/17/2024 04 PM PDT             2.3             98         0              Normal
  03/17/2024 05 PM PDT             2.3             98         0              Normal
  03/17/2024 06 PM PDT             2.3             98         0              Normal
  03/17/2024 07 PM PDT             2.3             97         -              Normal
  03/17/2024 08 PM PDT             2.3             97         0              Normal
  03/17/2024 09 PM PDT             2.3             97         0              Normal
  03/17/2024 10 PM PDT             2.3             97         0              Normal
  03/17/2024 11 PM PDT             2.3             95         -              Normal
  03/18/2024 12 AM PDT             2.3             95         0              Normal
  03/18/2024 01 AM PDT             2.3             95         0              Normal
  03/18/2024 02 AM PDT             2.3             94         -              Normal
  03/18/2024 03 AM PDT             2.3             94         0              Normal
  03/18/2024 04 AM PDT             2.3             94         0              Normal
  03/18/2024 05 AM PDT             2.3             94         0              Normal
  03/18/2024 06 AM PDT             2.3             94         0              Normal
  03/18/2024 07 AM PDT             2.2             93         -              Normal
  03/18/2024 08 AM PDT             2.2             93         0              Normal
  03/18/2024 09 AM PDT             2.2             93         0              Normal
  03/18/2024 10 AM PDT             2.2             93         0              Normal
  03/18/2024 11 AM PDT             2.2             93         0              Normal
  03/18/2024 12 PM PDT             2.2             93         0              Normal
  03/18/2024 01 PM PDT             2.2             93         0              Normal
  03/18/2024 02 PM PDT             2.2             93         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/18/2024 03 PM PDT             2.2             93                        Normal
  03/18/2024 04 PM PDT             2.2             91         -              Normal
  03/18/2024 05 PM PDT             2.2             91         0              Normal
  03/18/2024 06 PM PDT             2.2             91         0              Normal
  03/18/2024 07 PM PDT             2.2             91         0              Normal
  03/18/2024 08 PM PDT             2.2             91         0              Normal
  03/18/2024 09 PM PDT             2.2             91         0              Normal
  03/18/2024 10 PM PDT             2.2             90         -              Normal
  03/18/2024 11 PM PDT             2.2             90         0              Normal
  03/19/2024 12 AM PDT             2.2             90         0              Normal
  03/19/2024 01 AM PDT             2.2             90         0              Normal
  03/19/2024 02 AM PDT             2.2             90         0              Normal
  03/19/2024 03 AM PDT             2.2             90         0              Normal
  03/19/2024 04 AM PDT             2.2             90         0              Normal
  03/19/2024 05 AM PDT             2.2             89         -              Normal
  03/19/2024 06 AM PDT             2.2             89         0              Normal
  03/19/2024 07 AM PDT             2.2             89         0              Normal
  03/19/2024 08 AM PDT             2.2             89         0              Normal
  03/19/2024 09 AM PDT             2.2             89         0              Normal
  03/19/2024 10 AM PDT             2.2             89         0              Normal
  03/19/2024 11 AM PDT             2.2             87         -              Normal
  03/19/2024 12 PM PDT             2.2             87         0              Normal
  03/19/2024 01 PM PDT             2.2             87         0              Normal
  03/19/2024 02 PM PDT             2.2             87         0              Normal
  03/19/2024 03 PM PDT             2.2             87         0              Normal
  03/19/2024 04 PM PDT             2.2             87         0              Normal
  03/19/2024 05 PM PDT             2.2             87         0              Normal
  03/19/2024 06 PM PDT             2.2             86         -              Normal
  03/19/2024 07 PM PDT             2.2             86         0              Normal
  03/19/2024 08 PM PDT             2.2             86         0              Normal
  03/19/2024 09 PM PDT             2.2             86         0              Normal
  03/19/2024 10 PM PDT             2.2             86         0              Normal
  03/19/2024 11 PM PDT             2.2             86         0              Normal
  03/20/2024 12 AM PDT             2.2             86         0              Normal
  03/20/2024 01 AM PDT             2.2             85         -              Normal
  03/20/2024 02 AM PDT             2.2             85         0              Normal
  03/20/2024 03 AM PDT             2.2             85         0              Normal
  03/20/2024 04 AM PDT             2.2             85         0              Normal
  03/20/2024 05 AM PDT             2.2             85         0              Normal
  03/20/2024 06 AM PDT             2.2             85         0              Normal
  03/20/2024 07 AM PDT             2.2             85         0              Normal
  03/20/2024 08 AM PDT             2.2             84         -              Normal
  03/20/2024 09 AM PDT             2.2             84         0              Normal
  03/20/2024 10 AM PDT             2.2             84         0              Normal
  03/20/2024 11 AM PDT             2.2             84         0              Normal
  03/20/2024 12 PM PDT             2.2             84         0              Normal
  03/20/2024 01 PM PDT             2.2             84         0              Normal
  03/20/2024 02 PM PDT             2.2             84         0              Normal
  03/20/2024 03 PM PDT             2.2             82         -              Normal
  03/20/2024 04 PM PDT             2.2             82         0              Normal
  03/20/2024 05 PM PDT             2.2             82         0              Normal
  03/20/2024 06 PM PDT             2.2             82         0              Normal
  03/20/2024 07 PM PDT             2.2             82         0              Normal
  03/20/2024 08 PM PDT             2.2             82         0              Normal
  03/20/2024 09 PM PDT             2.2             82         0              Normal
  03/20/2024 10 PM PDT             2.2             81         -              Normal
  03/20/2024 11 PM PDT             2.2             81         0              Normal
  03/21/2024 12 AM PDT             2.2             81         0              Normal
  03/21/2024 01 AM PDT             2.2             81         0              Normal
  03/21/2024 02 AM PDT             2.2             81         0              Normal
  03/21/2024 03 AM PDT             2.2             81         0              Normal
  03/21/2024 04 AM PDT             2.2             81         0              Normal
  03/21/2024 05 AM PDT             2.1             80         -              Normal
  03/21/2024 06 AM PDT             2.1             80         0              Normal
  03/21/2024 07 AM PDT             2.1             80         0              Normal
  03/21/2024 08 AM PDT             2.1             80         0              Normal
  03/21/2024 09 AM PDT             2.1             80         0              Normal
  03/21/2024 10 AM PDT             2.1             80         0              Normal
  03/21/2024 11 AM PDT             2.1             80         0              Normal
  03/21/2024 12 PM PDT             2.1             79         -              Normal
  03/21/2024 01 PM PDT             2.1             79         0              Normal
  03/21/2024 02 PM PDT             2.1             79         0              Normal
  03/21/2024 03 PM PDT             2.1             79         0              Normal
  03/21/2024 04 PM PDT             2.1             79         0              Normal
  03/21/2024 05 PM PDT             2.1             79         0              Normal
  03/21/2024 06 PM PDT             2.1             79         0              Normal
  03/21/2024 07 PM PDT             2.1             77         -              Normal
  03/21/2024 08 PM PDT             2.1             77         0              Normal
  03/21/2024 09 PM PDT             2.1             77         0              Normal
  03/21/2024 10 PM PDT             2.1             77         0              Normal
  03/21/2024 11 PM PDT             2.1             77         0              Normal
  03/22/2024 12 AM PDT             2.1             77         0              Normal
  03/22/2024 01 AM PDT             2.1             77         0              Normal
  03/22/2024 02 AM PDT             2.1             77         0              Normal
  03/22/2024 03 AM PDT             2.1             76         -              Normal
  03/22/2024 04 AM PDT             2.1             76         0              Normal
  03/22/2024 05 AM PDT             2.1             76         0              Normal
  03/22/2024 06 AM PDT             2.1             76         0              Normal
  03/22/2024 07 AM PDT             2.1             76         0              Normal
  03/22/2024 08 AM PDT             2.1             76         0              Normal
  03/22/2024 09 AM PDT             2.1             76         0              Normal
  03/22/2024 10 AM PDT             2.1             75         -              Normal
  03/22/2024 11 AM PDT             2.1             75         0              Normal
  03/22/2024 12 PM PDT             2.1             75         0              Normal
  03/22/2024 01 PM PDT             2.1             75         0              Normal
  03/22/2024 02 PM PDT             2.1             75         0              Normal
  03/22/2024 03 PM PDT             2.1             75         0              Normal
  03/22/2024 04 PM PDT             2.1             75         0              Normal
  03/22/2024 05 PM PDT             2.1             75         0              Normal
  03/22/2024 06 PM PDT             2.1             75         0              Normal
  03/22/2024 07 PM PDT             2.1             76         +              Normal
  03/22/2024 08 PM PDT             2.1             76         0              Normal
  03/22/2024 09 PM PDT             2.1             77         +              Normal
  03/22/2024 10 PM PDT             2.1             77         0              Normal
  03/22/2024 11 PM PDT             2.1             79         +              Normal
  03/23/2024 12 AM PDT             2.1             79         0              Normal
  03/23/2024 01 AM PDT             2.1             80         +              Normal
  03/23/2024 02 AM PDT             2.1             80         0              Normal
  03/23/2024 03 AM PDT             2.1             80         0              Normal
  03/23/2024 04 AM PDT             2.2             81         +              Normal
  03/23/2024 05 AM PDT             2.2             81         0              Normal
#
# NOTE 1: Stages are rounded to the nearest tenth (.1) of a foot.
# NOTE 2: Flows are rounded to the nearest (1) cfs.
# NOTE 3: Trends are determined using hourly change in unrounded stage and flow.
# NOTE 4: Maximum Values are determined using unrounded stage and flow.