Other Surface Observations
Issued by NWS Eureka, CA

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000
SXUS56 KEKA 300715
OSOEKA

Area Water Temperatures for Northwest California
National Weather Service Eureka CA
1215 AM PDT Fri Jul 30 2021

This product contains provisional data from automated gauges.
These data have not been reviewed or verified for accuracy.

                                   Water Temp F    QC
Location          Basin           Obs 24Hr Change Flag
----------------- --------------- --- ----------- ----
Branscomb 5N      Elder Creek      70     +1.0
Calpella 5E       Russian River E  73     +0.8
Helena 1SSE       Trinity River    66     +1.3
Hopland 4N        Russian River    69     +2.1
Klamath 3SE       Klamath River    76     +0.1
Lewiston 1NE      Trinity River    50     +0.6
Lewiston 6SE      Grass Vly Creek  70     +529.5      *
Lewiston Hatchery Trinity River    50     +0.7
Orleans           Klamath River    76     -0.3
Ukiah 3NNE        Russian River E  60     +0.4
Upper Lake 2SSE   Middle Creek     56      0.0
Crescent City 8NW Pacific Ocean    55
Crescent City     Crescent Harbor  59
Eureka 11NW       Pacific Ocean    51
Cape Mendocino    Pacific Ocean    53
Pt Arena 19N      Pacific Ocean    54

* QC Flag indicates the river temperature has changed 5F
  or more in 6 hours or 10F or more in 24 hours.

&&

Water temperatures can be cold, even if the air temperature is
warm. Immersion in cold water can be life threatening very
quickly due to cold water shock and loss of muscle control.
If you choose to venture out, wear all cold water protective
gear, including a life jacket, in the event of an accident.

       Cold Water Exposure Times

 Water     Loss of       Exhaustion/
Temp F  Muscle Control Unconsciousness
------- -------------- ---------------
 33-40     1-3 min        15-30 min
 40-50     1-5 min        30-60 min
 50-60    10-15 min         1-2 hr
 60-70    30-40 min         2-7 hr
 70-80     1-2 hr          2-12 hr

$$


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