Station Name: TRINITY R AB NF TRINITY R NR HELENA CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 1,404 feet

Nearest Address:
State Rte 299
Helena, CA 96052
Trinity County

GPS Coordinates: 40.76653148, -123.1144757

Nearby Water Temperatures

Red Flag Warning issued August 3 at 3:54PM PDT until August 5 at 9:00PM PDT by NWS Medford OR

Effective: Mon August 3, 2026, 3:54 PM
Expires: Tue August 4, 2026, 5:00 AM

The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM to 9 PM PDT Wednesday. * IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In California, Fire Weather zones 282, including Mt Shasta City, Dunsmuir and McCloud. * WIND...Southeast to southwest 10 to 15 mph with gusts to 20 mph. * HUMIDITY...Minimum humidity 10 to 15 percent. * ADDITIONAL INFORMATION...Increasingly unstable conditions could further increase fire activity. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr

Follow all fire restrictions. You can find your county's emergency sign up form as well as links to fire restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Be sure you're signed up for your county's emergency alert system. Familiarize yourself with your emergency plan and make sure you listen to emergency services. Visit ready.gov/plan for more information. A Red Flag Warning is issued when we identify weather conditions that promote rapid spread of fire which may become life- threatening. This does not mean there is a fire. These conditions are either occurring now or will begin soon. It is important to have multiple ways to receive information from authorities.

Red Flag Warning issued August 3 at 3:54PM PDT until August 5 at 9:00PM PDT by NWS Medford OR

Effective: Mon August 3, 2026, 3:54 PM
Expires: Tue August 4, 2026, 5:00 AM

* IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In California...Fire weather zone 280, and in Oregon, Fire weather zones 616 and 617. This includes the East Evans Creek and Castle fires as well as Roseburg, Toketee Falls, Elkton, Tiller, Happy Camp, Etna, and Fort Jones. * WIND...West to northwest 10 to 15 mph with gusts up to 25 mph. * HUMIDITY...Minimum humidity 10 to 15 percent * ADDITIONAL INFORMATION...Increasingly unstable conditions could further increase fire activity. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr

Follow all fire restrictions. You can find your county's emergency sign up form as well as links to fire restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Be sure you're signed up for your county's emergency alert system. Familiarize yourself with your emergency plan and make sure you listen to emergency services. Visit ready.gov/plan for more information. A Red Flag Warning is issued when we identify weather conditions that promote rapid spread of fire which may become life- threatening. This does not mean there is a fire. These conditions are either occurring now or will begin soon. It is important to have multiple ways to receive information from authorities.

Heat Advisory issued August 3 at 1:42PM PDT until August 6 at 11:00PM PDT by NWS Medford OR

Effective: Mon August 3, 2026, 1:42 PM
Expires: Tue August 4, 2026, 2:00 PM

* WHAT...High temperatures around 105 to 113 with lows in the mid 60's. Moderate heat risk. * WHERE...In the Rogue, Illinois, Applegate, Scott and Klamath River Valleys. * WHEN...From 11 AM Tuesday to 11 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

Heat Advisory issued August 3 at 8:55PM PDT until August 6 at 11:00PM PDT by NWS Eureka CA

Effective: Mon August 3, 2026, 8:55 PM
Expires: Tue August 4, 2026, 5:00 AM

* WHAT...Temperatures of 105 to 110 will produce moderate to major heat risk. * WHERE...Trinity County. * WHEN...From 11 AM Tuesday to 11 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.