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

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MAD RIVER - ARCATA (ARCC1)
Latitude: 40.91º NLongitude: 124.06º WElevation: 13 Feet
Location: Humboldt County in CaliforniaRiver Group: North Coast
Issuance Time: Feb 25 2021 at 1:27 PM PSTNext Issuance: Feb 26 2021 at 9:00 AM PST
Monitor Stage: 15.0 FeetFlood Stage: 22.0 Feet

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mad River - Arcata (ARCC1)
#
# File Generation Time:  02/25/2021 at 01:27 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/20/2021 at 01:00 PM PST
# Maximum Observed Stage:                       11.4 Feet
# Maximum Observed Flow:                        6721 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/25/2021 at 02:00 PM PST
# Maximum Forecast Stage:                       9.0 Feet
# Maximum Forecast Flow:                        2255 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/20/2021 01 PM PST            11.4           6721                        Normal
  02/20/2021 02 PM PST            11.4           6681         -              Normal
  02/20/2021 03 PM PST            11.3           6442         -              Normal
  02/20/2021 04 PM PST            11.2           6284         -              Normal
  02/20/2021 05 PM PST            11.2           6186         -              Normal
  02/20/2021 06 PM PST            11.1           5990         -              Normal
  02/20/2021 07 PM PST            11.0           5893         -              Normal
  02/20/2021 08 PM PST            11.0           5816         -              Normal
  02/20/2021 09 PM PST            10.9           5662         -              Normal
  02/20/2021 10 PM PST            10.9           5623         -              Normal
  02/20/2021 11 PM PST            10.8           5528         -              Normal
  02/21/2021 12 AM PST            10.8           5470         -              Normal
  02/21/2021 01 AM PST            10.8           5413         -              Normal
  02/21/2021 02 AM PST            10.7           5318         -              Normal
  02/21/2021 03 AM PST            10.7           5318         0              Normal
  02/21/2021 04 AM PST            10.6           5186         -              Normal
  02/21/2021 05 AM PST            10.6           5149         -              Normal
  02/21/2021 06 AM PST            10.6           5111         -              Normal
  02/21/2021 07 AM PST            10.6           5036         -              Normal
  02/21/2021 08 AM PST            10.5           4943         -              Normal
  02/21/2021 09 AM PST            10.5           4869         -              Normal
  02/21/2021 10 AM PST            10.4           4795         -              Normal
  02/21/2021 11 AM PST            10.4           4758         -              Normal
  02/21/2021 12 PM PST            10.4           4703         -              Normal
  02/21/2021 01 PM PST            10.3           4630         -              Normal
  02/21/2021 02 PM PST            10.3           4593         -              Normal
  02/21/2021 03 PM PST            10.3           4538         -              Normal
  02/21/2021 04 PM PST            10.2           4466         -              Normal
  02/21/2021 05 PM PST            10.2           4393         -              Normal
  02/21/2021 06 PM PST            10.2           4393         0              Normal
  02/21/2021 07 PM PST            10.2           4321         -              Normal
  02/21/2021 08 PM PST            10.1           4285         -              Normal
  02/21/2021 09 PM PST            10.1           4231         -              Normal
  02/21/2021 10 PM PST            10.1           4160         -              Normal
  02/21/2021 11 PM PST            10.1           4124         -              Normal
  02/22/2021 12 AM PST            10.0           4106         -              Normal
  02/22/2021 01 AM PST            10.0           4089         -              Normal
  02/22/2021 02 AM PST            10.0           4053         -              Normal
  02/22/2021 03 AM PST            10.0           4053         0              Normal
  02/22/2021 04 AM PST            10.0           4018         -              Normal
  02/22/2021 05 AM PST            10.0           4000         -              Normal
  02/22/2021 06 AM PST             9.9           3916         -              Normal
  02/22/2021 07 AM PST             9.9           3916         0              Normal
  02/22/2021 08 AM PST             9.9           3899         -              Normal
  02/22/2021 09 AM PST             9.9           3849         -              Normal
  02/22/2021 10 AM PST             9.9           3815         -              Normal
  02/22/2021 11 AM PST             9.9           3815         0              Normal
  02/22/2021 12 PM PST             9.9           3798         -              Normal
  02/22/2021 01 PM PST             9.8           3765         -              Normal
  02/22/2021 02 PM PST             9.8           3715         -              Normal
  02/22/2021 03 PM PST             9.8           3682         -              Normal
  02/22/2021 04 PM PST             9.8           3665         -              Normal
  02/22/2021 05 PM PST             9.8           3615         -              Normal
  02/22/2021 06 PM PST             9.7           3599         -              Normal
  02/22/2021 07 PM PST             9.7           3566         -              Normal
  02/22/2021 08 PM PST             9.7           3549         -              Normal
  02/22/2021 09 PM PST             9.7           3533         -              Normal
  02/22/2021 10 PM PST             9.7           3480         -              Normal
  02/22/2021 11 PM PST             9.7           3480         0              Normal
  02/23/2021 12 AM PST             9.7           3500         +              Normal
  02/23/2021 01 AM PST             9.7           3439         -              Normal
  02/23/2021 02 AM PST             9.7           3439         0              Normal
  02/23/2021 03 AM PST             9.6           3398         -              Normal
  02/23/2021 04 AM PST             9.6           3378         -              Normal
  02/23/2021 05 AM PST             9.6           3338         -              Normal
  02/23/2021 06 AM PST             9.6           3358         +              Normal
  02/23/2021 07 AM PST             9.6           3319         -              Normal
  02/23/2021 08 AM PST             9.6           3299         -              Normal
  02/23/2021 09 AM PST             9.6           3260         -              Normal
  02/23/2021 10 AM PST             9.6           3240         -              Normal
  02/23/2021 11 AM PST             9.5           3221         -              Normal
  02/23/2021 12 PM PST             9.5           3182         -              Normal
  02/23/2021 01 PM PST             9.5           3163         -              Normal
  02/23/2021 02 PM PST             9.5           3163         0              Normal
  02/23/2021 03 PM PST             9.5           3144         -              Normal
  02/23/2021 04 PM PST             9.5           3144         0              Normal
  02/23/2021 05 PM PST             9.5           3125         -              Normal
  02/23/2021 06 PM PST             9.5           3087         -              Normal
  02/23/2021 07 PM PST             9.4           3031         -              Normal
  02/23/2021 08 PM PST             9.4           3012         -              Normal
  02/23/2021 09 PM PST             9.4           2994         -              Normal
  02/23/2021 10 PM PST             9.4           2994         0              Normal
  02/23/2021 11 PM PST             9.4           2957         -              Normal
  02/24/2021 12 AM PST             9.4           2939         -              Normal
  02/24/2021 01 AM PST             9.4           2885         -              Normal
  02/24/2021 02 AM PST             9.4           2903         +              Normal
  02/24/2021 03 AM PST             9.4           2885         -              Normal
  02/24/2021 04 AM PST             9.3           2867         -              Normal
  02/24/2021 05 AM PST             9.3           2831         -              Normal
  02/24/2021 06 AM PST             9.3           2813         -              Normal
  02/24/2021 07 AM PST             9.3           2796         -              Normal
  02/24/2021 08 AM PST             9.3           2761         -              Normal
  02/24/2021 09 AM PST             9.3           2726         -              Normal
  02/24/2021 10 AM PST             9.3           2761         +              Normal
  02/24/2021 11 AM PST             9.3           2709         -              Normal
  02/24/2021 12 PM PST             9.3           2709         0              Normal
  02/24/2021 01 PM PST             9.3           2709         0              Normal
  02/24/2021 02 PM PST             9.2           2640         -              Normal
  02/24/2021 03 PM PST             9.2           2674         +              Normal
  02/24/2021 04 PM PST             9.2           2640         -              Normal
  02/24/2021 05 PM PST             9.2           2640         0              Normal
  02/24/2021 06 PM PST             9.2           2590         -              Normal
  02/24/2021 07 PM PST             9.2           2573         -              Normal
  02/24/2021 08 PM PST             9.2           2573         0              Normal
  02/24/2021 09 PM PST             9.2           2540         -              Normal
  02/24/2021 10 PM PST             9.1           2507         -              Normal
  02/24/2021 11 PM PST             9.1           2507         0              Normal
  02/25/2021 12 AM PST             9.1           2491         -              Normal
  02/25/2021 01 AM PST             9.1           2491         0              Normal
  02/25/2021 02 AM PST             9.1           2442         -              Normal
  02/25/2021 03 AM PST             9.1           2426         -              Normal
  02/25/2021 04 AM PST             9.1           2410         -              Normal
  02/25/2021 05 AM PST             9.1           2395         -              Normal
  02/25/2021 06 AM PST             9.1           2363         -              Normal
  02/25/2021 07 AM PST             9.1           2363         0              Normal
  02/25/2021 08 AM PST             9.0           2347         -              Normal
  02/25/2021 09 AM PST             9.0           2332         -              Normal
  02/25/2021 10 AM PST             9.0           2316         -              Normal
  02/25/2021 11 AM PST             9.0           2301         -              Normal
  02/25/2021 12 PM PST             9.0           2285         -              Normal
  02/25/2021 01 PM PST             9.0           2270         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/25/2021 02 PM PST             9.0           2255                        Normal
  02/25/2021 03 PM PST             9.0           2240         -              Normal
  02/25/2021 04 PM PST             9.0           2225         -              Normal
  02/25/2021 05 PM PST             8.9           2210         -              Normal
  02/25/2021 06 PM PST             8.9           2195         -              Normal
  02/25/2021 07 PM PST             8.9           2180         -              Normal
  02/25/2021 08 PM PST             8.9           2180         0              Normal
  02/25/2021 09 PM PST             8.9           2150         -              Normal
  02/25/2021 10 PM PST             8.9           2150         0              Normal
  02/25/2021 11 PM PST             8.9           2136         -              Normal
  02/26/2021 12 AM PST             8.9           2121         -              Normal
  02/26/2021 01 AM PST             8.9           2106         -              Normal
  02/26/2021 02 AM PST             8.9           2092         -              Normal
  02/26/2021 03 AM PST             8.9           2078         -              Normal
  02/26/2021 04 AM PST             8.8           2063         -              Normal
  02/26/2021 05 AM PST             8.8           2049         -              Normal
  02/26/2021 06 AM PST             8.8           2035         -              Normal
  02/26/2021 07 AM PST             8.8           2021         -              Normal
  02/26/2021 08 AM PST             8.8           2007         -              Normal
  02/26/2021 09 AM PST             8.8           1993         -              Normal
  02/26/2021 10 AM PST             8.8           1979         -              Normal
  02/26/2021 11 AM PST             8.8           1965         -              Normal
  02/26/2021 12 PM PST             8.8           1965         0              Normal
  02/26/2021 01 PM PST             8.8           1951         -              Normal
  02/26/2021 02 PM PST             8.8           1937         -              Normal
  02/26/2021 03 PM PST             8.8           1924         -              Normal
  02/26/2021 04 PM PST             8.7           1910         -              Normal
  02/26/2021 05 PM PST             8.7           1896         -              Normal
  02/26/2021 06 PM PST             8.7           1883         -              Normal
  02/26/2021 07 PM PST             8.7           1870         -              Normal
  02/26/2021 08 PM PST             8.7           1856         -              Normal
  02/26/2021 09 PM PST             8.7           1843         -              Normal
  02/26/2021 10 PM PST             8.7           1830         -              Normal
  02/26/2021 11 PM PST             8.7           1830         0              Normal
  02/27/2021 12 AM PST             8.7           1817         -              Normal
  02/27/2021 01 AM PST             8.7           1804         -              Normal
  02/27/2021 02 AM PST             8.7           1791         -              Normal
  02/27/2021 03 AM PST             8.6           1778         -              Normal
  02/27/2021 04 AM PST             8.6           1778         0              Normal
  02/27/2021 05 AM PST             8.6           1765         -              Normal
  02/27/2021 06 AM PST             8.6           1752         -              Normal
  02/27/2021 07 AM PST             8.6           1739         -              Normal
  02/27/2021 08 AM PST             8.6           1739         0              Normal
  02/27/2021 09 AM PST             8.6           1726         -              Normal
  02/27/2021 10 AM PST             8.6           1714         -              Normal
  02/27/2021 11 AM PST             8.6           1701         -              Normal
  02/27/2021 12 PM PST             8.6           1689         -              Normal
  02/27/2021 01 PM PST             8.6           1689         0              Normal
  02/27/2021 02 PM PST             8.6           1676         -              Normal
  02/27/2021 03 PM PST             8.6           1664         -              Normal
  02/27/2021 04 PM PST             8.5           1652         -              Normal
  02/27/2021 05 PM PST             8.5           1652         0              Normal
  02/27/2021 06 PM PST             8.5           1639         -              Normal
  02/27/2021 07 PM PST             8.5           1627         -              Normal
  02/27/2021 08 PM PST             8.5           1627         0              Normal
  02/27/2021 09 PM PST             8.5           1615         -              Normal
  02/27/2021 10 PM PST             8.5           1603         -              Normal
  02/27/2021 11 PM PST             8.5           1591         -              Normal
  02/28/2021 12 AM PST             8.5           1591         0              Normal
  02/28/2021 01 AM PST             8.5           1579         -              Normal
  02/28/2021 02 AM PST             8.5           1567         -              Normal
  02/28/2021 03 AM PST             8.5           1555         -              Normal
  02/28/2021 04 AM PST             8.5           1555         0              Normal
  02/28/2021 05 AM PST             8.4           1543         -              Normal
  02/28/2021 06 AM PST             8.4           1532         -              Normal
  02/28/2021 07 AM PST             8.4           1532         0              Normal
  02/28/2021 08 AM PST             8.4           1520         -              Normal
  02/28/2021 09 AM PST             8.4           1509         -              Normal
  02/28/2021 10 AM PST             8.4           1497         -              Normal
  02/28/2021 11 AM PST             8.4           1497         0              Normal
  02/28/2021 12 PM PST             8.4           1486         -              Normal
  02/28/2021 01 PM PST             8.4           1474         -              Normal
  02/28/2021 02 PM PST             8.4           1474         0              Normal
  02/28/2021 03 PM PST             8.4           1463         -              Normal
  02/28/2021 04 PM PST             8.4           1452         -              Normal
  02/28/2021 05 PM PST             8.4           1452         0              Normal
  02/28/2021 06 PM PST             8.4           1440         -              Normal
  02/28/2021 07 PM PST             8.3           1429         -              Normal
  02/28/2021 08 PM PST             8.3           1429         0              Normal
  02/28/2021 09 PM PST             8.3           1418         -              Normal
  02/28/2021 10 PM PST             8.3           1407         -              Normal
  02/28/2021 11 PM PST             8.3           1407         0              Normal
  03/01/2021 12 AM PST             8.3           1396         -              Normal
  03/01/2021 01 AM PST             8.3           1385         -              Normal
  03/01/2021 02 AM PST             8.3           1385         0              Normal
  03/01/2021 03 AM PST             8.3           1374         -              Normal
  03/01/2021 04 AM PST             8.3           1363         -              Normal
  03/01/2021 05 AM PST             8.3           1363         0              Normal
  03/01/2021 06 AM PST             8.3           1353         -              Normal
  03/01/2021 07 AM PST             8.3           1353         0              Normal
  03/01/2021 08 AM PST             8.3           1342         -              Normal
  03/01/2021 09 AM PST             8.3           1331         -              Normal
  03/01/2021 10 AM PST             8.3           1331         0              Normal
  03/01/2021 11 AM PST             8.2           1321         -              Normal
  03/01/2021 12 PM PST             8.2           1310         -              Normal
  03/01/2021 01 PM PST             8.2           1310         0              Normal
  03/01/2021 02 PM PST             8.2           1300         -              Normal
  03/01/2021 03 PM PST             8.2           1300         0              Normal
  03/01/2021 04 PM PST             8.2           1289         -              Normal
  03/01/2021 05 PM PST             8.2           1289         0              Normal
  03/01/2021 06 PM PST             8.2           1279         -              Normal
  03/01/2021 07 PM PST             8.2           1279         0              Normal
  03/01/2021 08 PM PST             8.2           1269         -              Normal
  03/01/2021 09 PM PST             8.2           1269         0              Normal
  03/01/2021 10 PM PST             8.2           1259         -              Normal
  03/01/2021 11 PM PST             8.2           1248         -              Normal
  03/02/2021 12 AM PST             8.2           1248         0              Normal
  03/02/2021 01 AM PST             8.2           1238         -              Normal
  03/02/2021 02 AM PST             8.2           1238         0              Normal
  03/02/2021 03 AM PST             8.2           1228         -              Normal
  03/02/2021 04 AM PST             8.2           1218         -              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.