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 CaliforniaRiver Group: Russian Napa
Issuance Time: Sep 18 2021 at 7:38 AM PDTNext Issuance: Sep 19 2021 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:  09/18/2021 at 07:38 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  09/18/2021 at 07:00 AM PDT
# Maximum Observed Stage:                       0.4 Feet
# Maximum Observed Flow:                        0 cfs
#
# Earliest Date & Time of Maximum Forecast:     09/18/2021 at 08:00 AM PDT
# Maximum Forecast Stage:                       0.4 Feet
# Maximum Forecast Flow:                        0 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  09/13/2021 07 AM PDT             0.4              0                        Normal
  09/13/2021 08 AM PDT             0.4              0         0              Normal
  09/13/2021 09 AM PDT             0.4              0         0              Normal
  09/13/2021 10 AM PDT             0.4              0         0              Normal
  09/13/2021 11 AM PDT             0.4              0         0              Normal
  09/13/2021 12 PM PDT             0.4              0         0              Normal
  09/13/2021 01 PM PDT             0.4              0         0              Normal
  09/13/2021 02 PM PDT             0.4              0         0              Normal
  09/13/2021 03 PM PDT             0.4              0         0              Normal
  09/13/2021 04 PM PDT             0.4              0         0              Normal
  09/13/2021 05 PM PDT             0.4              0         0              Normal
  09/13/2021 06 PM PDT             0.4              0         0              Normal
  09/13/2021 07 PM PDT             0.4              0         0              Normal
  09/13/2021 08 PM PDT             0.4              0         0              Normal
  09/13/2021 09 PM PDT             0.4              0         0              Normal
  09/13/2021 10 PM PDT             0.4              0         0              Normal
  09/13/2021 11 PM PDT             0.4              0         0              Normal
  09/14/2021 12 AM PDT             0.4              0         0              Normal
  09/14/2021 01 AM PDT             0.4              0         0              Normal
  09/14/2021 02 AM PDT             0.4              0         0              Normal
  09/14/2021 03 AM PDT             0.4              0         0              Normal
  09/14/2021 04 AM PDT             0.4              0         0              Normal
  09/14/2021 05 AM PDT             0.4              0         0              Normal
  09/14/2021 06 AM PDT             0.4              0         0              Normal
  09/14/2021 07 AM PDT             0.4              0         0              Normal
  09/14/2021 08 AM PDT             0.4              0         0              Normal
  09/14/2021 09 AM PDT             0.4              0         0              Normal
  09/14/2021 10 AM PDT             0.4              0         0              Normal
  09/14/2021 11 AM PDT             0.4              0         0              Normal
  09/14/2021 12 PM PDT             0.4              0         0              Normal
  09/14/2021 01 PM PDT             0.4              0         0              Normal
  09/14/2021 02 PM PDT             0.4              0         0              Normal
  09/14/2021 03 PM PDT             0.4              0         0              Normal
  09/14/2021 04 PM PDT             0.4              0         0              Normal
  09/14/2021 05 PM PDT             0.4              0         0              Normal
  09/14/2021 06 PM PDT             0.4              0         0              Normal
  09/14/2021 07 PM PDT             0.4              0         0              Normal
  09/14/2021 08 PM PDT             0.4              0         0              Normal
  09/14/2021 09 PM PDT             0.4              0         0              Normal
  09/14/2021 10 PM PDT             0.4              0         0              Normal
  09/14/2021 11 PM PDT             0.4              0         0              Normal
  09/15/2021 12 AM PDT             0.4              0         0              Normal
  09/15/2021 01 AM PDT             0.4              0         0              Normal
  09/15/2021 02 AM PDT             0.4              0         0              Normal
  09/15/2021 03 AM PDT             0.4              0         0              Normal
  09/15/2021 04 AM PDT             0.4              0         0              Normal
  09/15/2021 05 AM PDT             0.4              0         0              Normal
  09/15/2021 06 AM PDT             0.4              0         0              Normal
  09/15/2021 07 AM PDT             0.4              0         0              Normal
  09/15/2021 08 AM PDT             0.4              0         0              Normal
  09/15/2021 09 AM PDT             0.4              0         0              Normal
  09/15/2021 10 AM PDT             0.4              0         0              Normal
  09/15/2021 11 AM PDT             0.4              0         0              Normal
  09/15/2021 12 PM PDT             0.4              0         0              Normal
  09/15/2021 01 PM PDT             0.4              0         0              Normal
  09/15/2021 02 PM PDT             0.4              0         0              Normal
  09/15/2021 03 PM PDT             0.4              0         0              Normal
  09/15/2021 04 PM PDT             0.4              0         0              Normal
  09/15/2021 05 PM PDT             0.4              0         0              Normal
  09/15/2021 06 PM PDT             0.4              0         0              Normal
  09/15/2021 07 PM PDT             0.4              0         0              Normal
  09/15/2021 08 PM PDT             0.4              0         0              Normal
  09/15/2021 09 PM PDT             0.4              0         0              Normal
  09/15/2021 10 PM PDT             0.4              0         0              Normal
  09/15/2021 11 PM PDT             0.4              0         0              Normal
  09/16/2021 12 AM PDT             0.4              0         0              Normal
  09/16/2021 01 AM PDT             0.4              0         0              Normal
  09/16/2021 02 AM PDT             0.4              0         0              Normal
  09/16/2021 03 AM PDT             0.4              0         0              Normal
  09/16/2021 04 AM PDT             0.4              0         0              Normal
  09/16/2021 05 AM PDT             0.4              0         0              Normal
  09/16/2021 06 AM PDT             0.4              0         0              Normal
  09/16/2021 07 AM PDT             0.4              0         0              Normal
  09/16/2021 08 AM PDT             0.4              0         0              Normal
  09/16/2021 09 AM PDT             0.4              0         0              Normal
  09/16/2021 10 AM PDT             0.4              0         0              Normal
  09/16/2021 11 AM PDT             0.4              0         0              Normal
  09/16/2021 12 PM PDT             0.4              0         0              Normal
  09/16/2021 01 PM PDT             0.4              0         0              Normal
  09/16/2021 02 PM PDT             0.4              0         0              Normal
  09/16/2021 03 PM PDT             0.4              0         0              Normal
  09/16/2021 04 PM PDT             0.4              0         0              Normal
  09/16/2021 05 PM PDT             0.4              0         0              Normal
  09/16/2021 06 PM PDT             0.4              0         0              Normal
  09/16/2021 07 PM PDT             0.4              0         0              Normal
  09/16/2021 08 PM PDT             0.4              0         0              Normal
  09/16/2021 09 PM PDT             0.4              0         0              Normal
  09/16/2021 10 PM PDT             0.4              0         0              Normal
  09/16/2021 11 PM PDT             0.4              0         0              Normal
  09/17/2021 12 AM PDT             0.4              0         0              Normal
  09/17/2021 01 AM PDT             0.4              0         0              Normal
  09/17/2021 02 AM PDT             0.4              0         0              Normal
  09/17/2021 03 AM PDT             0.4              0         0              Normal
  09/17/2021 04 AM PDT             0.4              0         0              Normal
  09/17/2021 05 AM PDT             0.4              0         0              Normal
  09/17/2021 06 AM PDT             0.4              0         0              Normal
  09/17/2021 07 AM PDT             0.4              0         0              Normal
  09/17/2021 08 AM PDT             0.4              0         0              Normal
  09/17/2021 09 AM PDT             0.4              0         0              Normal
  09/17/2021 10 AM PDT             0.4              0         0              Normal
  09/17/2021 11 AM PDT             0.4              0         0              Normal
  09/17/2021 12 PM PDT             0.4              0         0              Normal
  09/17/2021 01 PM PDT             0.4              0         0              Normal
  09/17/2021 02 PM PDT             0.4              0         0              Normal
  09/17/2021 03 PM PDT             0.4              0         0              Normal
  09/17/2021 04 PM PDT             0.4              0         0              Normal
  09/17/2021 05 PM PDT             0.4              0         0              Normal
  09/17/2021 06 PM PDT             0.4              0         0              Normal
  09/17/2021 07 PM PDT             0.4              0         0              Normal
  09/17/2021 08 PM PDT             0.4              0         0              Normal
  09/17/2021 09 PM PDT             0.4              0         0              Normal
  09/17/2021 10 PM PDT             0.4              0         0              Normal
  09/17/2021 11 PM PDT             0.4              0         0              Normal
  09/18/2021 12 AM PDT             0.4              0         0              Normal
  09/18/2021 01 AM PDT             0.4              0         0              Normal
  09/18/2021 02 AM PDT             0.4              0         0              Normal
  09/18/2021 03 AM PDT             0.4              0         0              Normal
  09/18/2021 04 AM PDT             0.4              0         0              Normal
  09/18/2021 05 AM PDT             0.4              0         0              Normal
  09/18/2021 06 AM PDT             0.4              0         0              Normal
  09/18/2021 07 AM PDT             0.4              0         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  09/18/2021 08 AM PDT             0.4              0                        Normal
  09/18/2021 09 AM PDT             0.4              0         0              Normal
  09/18/2021 10 AM PDT             0.4              0         0              Normal
  09/18/2021 11 AM PDT             0.4              0         0              Normal
  09/18/2021 12 PM PDT             0.4              0         0              Normal
  09/18/2021 01 PM PDT             0.4              0         0              Normal
  09/18/2021 02 PM PDT             0.4              0         0              Normal
  09/18/2021 03 PM PDT             0.4              0         0              Normal
  09/18/2021 04 PM PDT             0.4              0         0              Normal
  09/18/2021 05 PM PDT             0.4              0         0              Normal
  09/18/2021 06 PM PDT             0.4              0         0              Normal
  09/18/2021 07 PM PDT             0.4              0         0              Normal
  09/18/2021 08 PM PDT             0.4              0         0              Normal
  09/18/2021 09 PM PDT             0.4              0         0              Normal
  09/18/2021 10 PM PDT             0.4              0         0              Normal
  09/18/2021 11 PM PDT             0.4              0         0              Normal
  09/19/2021 12 AM PDT             0.4              0         0              Normal
  09/19/2021 01 AM PDT             0.4              0         0              Normal
  09/19/2021 02 AM PDT             0.4              0         0              Normal
  09/19/2021 03 AM PDT             0.4              0         0              Normal
  09/19/2021 04 AM PDT             0.4              0         0              Normal
  09/19/2021 05 AM PDT             0.4              0         0              Normal
  09/19/2021 06 AM PDT             0.4              0         0              Normal
  09/19/2021 07 AM PDT             0.4              0         0              Normal
  09/19/2021 08 AM PDT             0.4              0         0              Normal
  09/19/2021 09 AM PDT             0.4              0         0              Normal
  09/19/2021 10 AM PDT             0.4              0         0              Normal
  09/19/2021 11 AM PDT             0.4              0         0              Normal
  09/19/2021 12 PM PDT             0.4              0         0              Normal
  09/19/2021 01 PM PDT             0.4              0         0              Normal
  09/19/2021 02 PM PDT             0.4              0         0              Normal
  09/19/2021 03 PM PDT             0.4              0         0              Normal
  09/19/2021 04 PM PDT             0.4              0         0              Normal
  09/19/2021 05 PM PDT             0.4              0         0              Normal
  09/19/2021 06 PM PDT             0.4              0         0              Normal
  09/19/2021 07 PM PDT             0.4              0         0              Normal
  09/19/2021 08 PM PDT             0.4              0         0              Normal
  09/19/2021 09 PM PDT             0.4              0         0              Normal
  09/19/2021 10 PM PDT             0.4              0         0              Normal
  09/19/2021 11 PM PDT             0.4              0         0              Normal
  09/20/2021 12 AM PDT             0.4              0         0              Normal
  09/20/2021 01 AM PDT             0.4              0         0              Normal
  09/20/2021 02 AM PDT             0.4              0         0              Normal
  09/20/2021 03 AM PDT             0.4              0         0              Normal
  09/20/2021 04 AM PDT             0.4              0         0              Normal
  09/20/2021 05 AM PDT             0.4              0         0              Normal
  09/20/2021 06 AM PDT             0.4              0         0              Normal
  09/20/2021 07 AM PDT             0.4              0         0              Normal
  09/20/2021 08 AM PDT             0.4              0         0              Normal
  09/20/2021 09 AM PDT             0.4              0         0              Normal
  09/20/2021 10 AM PDT             0.4              0         0              Normal
  09/20/2021 11 AM PDT             0.4              0         0              Normal
  09/20/2021 12 PM PDT             0.4              0         0              Normal
  09/20/2021 01 PM PDT             0.4              0         0              Normal
  09/20/2021 02 PM PDT             0.4              0         0              Normal
  09/20/2021 03 PM PDT             0.4              0         0              Normal
  09/20/2021 04 PM PDT             0.4              0         0              Normal
  09/20/2021 05 PM PDT             0.4              0         0              Normal
  09/20/2021 06 PM PDT             0.4              0         0              Normal
  09/20/2021 07 PM PDT             0.4              0         0              Normal
  09/20/2021 08 PM PDT             0.4              0         0              Normal
  09/20/2021 09 PM PDT             0.4              0         0              Normal
  09/20/2021 10 PM PDT             0.4              0         0              Normal
  09/20/2021 11 PM PDT             0.4              0         0              Normal
  09/21/2021 12 AM PDT             0.4              0         0              Normal
  09/21/2021 01 AM PDT             0.4              0         0              Normal
  09/21/2021 02 AM PDT             0.4              0         0              Normal
  09/21/2021 03 AM PDT             0.4              0         0              Normal
  09/21/2021 04 AM PDT             0.4              0         0              Normal
  09/21/2021 05 AM PDT             0.4              0         0              Normal
  09/21/2021 06 AM PDT             0.4              0         0              Normal
  09/21/2021 07 AM PDT             0.4              0         0              Normal
  09/21/2021 08 AM PDT             0.4              0         0              Normal
  09/21/2021 09 AM PDT             0.4              0         0              Normal
  09/21/2021 10 AM PDT             0.4              0         0              Normal
  09/21/2021 11 AM PDT             0.4              0         0              Normal
  09/21/2021 12 PM PDT             0.4              0         0              Normal
  09/21/2021 01 PM PDT             0.4              0         0              Normal
  09/21/2021 02 PM PDT             0.4              0         0              Normal
  09/21/2021 03 PM PDT             0.4              0         0              Normal
  09/21/2021 04 PM PDT             0.4              0         0              Normal
  09/21/2021 05 PM PDT             0.4              0         0              Normal
  09/21/2021 06 PM PDT             0.4              0         0              Normal
  09/21/2021 07 PM PDT             0.4              0         0              Normal
  09/21/2021 08 PM PDT             0.4              0         0              Normal
  09/21/2021 09 PM PDT             0.4              0         0              Normal
  09/21/2021 10 PM PDT             0.4              0         0              Normal
  09/21/2021 11 PM PDT             0.4              0         0              Normal
  09/22/2021 12 AM PDT             0.4              0         0              Normal
  09/22/2021 01 AM PDT             0.4              0         0              Normal
  09/22/2021 02 AM PDT             0.4              0         0              Normal
  09/22/2021 03 AM PDT             0.4              0         0              Normal
  09/22/2021 04 AM PDT             0.4              0         0              Normal
  09/22/2021 05 AM PDT             0.4              0         0              Normal
  09/22/2021 06 AM PDT             0.4              0         0              Normal
  09/22/2021 07 AM PDT             0.4              0         0              Normal
  09/22/2021 08 AM PDT             0.4              0         0              Normal
  09/22/2021 09 AM PDT             0.4              0         0              Normal
  09/22/2021 10 AM PDT             0.4              0         0              Normal
  09/22/2021 11 AM PDT             0.4              0         0              Normal
  09/22/2021 12 PM PDT             0.4              0         0              Normal
  09/22/2021 01 PM PDT             0.4              0         0              Normal
  09/22/2021 02 PM PDT             0.4              0         0              Normal
  09/22/2021 03 PM PDT             0.4              0         0              Normal
  09/22/2021 04 PM PDT             0.4              0         0              Normal
  09/22/2021 05 PM PDT             0.4              0         0              Normal
  09/22/2021 06 PM PDT             0.4              0         0              Normal
  09/22/2021 07 PM PDT             0.4              0         0              Normal
  09/22/2021 08 PM PDT             0.4              0         0              Normal
  09/22/2021 09 PM PDT             0.4              0         0              Normal
  09/22/2021 10 PM PDT             0.4              0         0              Normal
  09/22/2021 11 PM PDT             0.4              0         0              Normal
  09/23/2021 12 AM PDT             0.4              0         0              Normal
  09/23/2021 01 AM PDT             0.4              0         0              Normal
  09/23/2021 02 AM PDT             0.4              0         0              Normal
  09/23/2021 03 AM PDT             0.4              0         0              Normal
  09/23/2021 04 AM PDT             0.4              0         0              Normal
  09/23/2021 05 AM PDT             0.4              0         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.