Flash flood warning affecting Trinity County Friday night due to thunderstorms

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The NWS Eureka CA issued a flash flood warning at 6:52 p.m. on Friday in effect until 9:45 p.m. for Trinity County.

"At 6:52 p.m., Doppler radar indicated thunderstorms producing heavy rain 17 miles north of Weaverville. Between 0.5 and 1 inch of rain has fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly," states the NWS. "Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas."

The warning is for Mainly rural areas of North Central Trinity County.

The NWS adds, "In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry arroyos is likely. The heavy rains will likely trigger rockslides, mudslides and debris flows in steep terrain, especially in and around these areas. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks."

This warning is in effect until 9:45 p.m.

Ways to stay safe during a flood according to the NWS

In case you reside within a flood-prone area or are currently camping in a low-lying zone, it is crucial to promptly seek higher ground. If told to evacuate, do so immediately. Ensure your home is securely locked when vacating the premises. If time permits, disconnect utilities and appliances. Avoid entering basements or rooms with submerged electrical outlets or cords. Should you observe sparks or hear buzzing, crackling, snapping, or popping sounds, evacuate immediately. Refrain from entering water that might carry an electric current and avoid walking through floodwaters. Remember, as little as 6 inches of moving water can knock you off your feet. If trapped by moving water, seek the highest possible point and contact emergency services by calling 911.

During heavy rainfall, there is a risk of flooding, especially in low-lying and flood-prone areas. Remember to never drive through water on the road, even if it seems shallow. According to the NWS, as little as 12 inches of rapidly flowing water can carry away most cars.

What steps to follow when driving in the rain?

• Turn on your headlights - Even when it's light outside, using headlights can improve visibility and alert other drivers to your presence.
• On the road - Drive in the middle lanes and stay on high ground. Rainwater tends to stockpile on the edges of roads.
• Keep clear of puddles - Driving through puddles or low rainwater areas can cause vehicles to hydroplane or skid out of control
• Maintain a safe distance from large vehicles - Trucks or buses can produce a water spray that hampers visibility.
• Steer clear of flooded areas - When coming to a flooded road, turn around and head back. Flash flooding currents are strong and can sweep drivers off roadways. Driving through deep water can also affect a vehicle's mechanical and electrical systems.

What is hydroplaning?

Hydroplaning occurs when a vehicle begins to slide uncontrollably on wet roads.

This happens when water in front of the tire builds up faster than the vehicle's weight can push water out of the way. The water pressure then causes the vehicle to rise and slide on a thin layer of water between the tires and the road, making the driver lose control. The three main causes of hydroplaning are:

1. Vehicle speed - When a vehicle's speed increases, the tire-traction grip and ability to control the vehicle decreases. Drive at a reduced speed during wet weather.
2. Water depth - The deeper the water, the sooner a vehicle loses traction on the road. It doesn't matter how deep the water is, even a thin layer can lead to hydroplaning.
3. Tire tread depth - Checking your tire tread before hitting the road is important, as low or no tread can lead to sliding.

In the event of your vehicle hydroplaning, here's what to know:

• Ease off the accelerator - Step off the gas to slow down the vehicle until the tires find traction.
• Turn into the skid - Turning into the skid can help the vehicle's tires realign to regain control.
• Make sure the tires reconnect with the road - During the skid, wait until the tires reconnect with the road and then gently straighten the wheels to regain control.
• Brake gently as needed - Brake normally if the vehicle has anti-lock brakes and pump brakes gently if in an older vehicle.

Source: The National Weather Service

United Robots California

This story was originally published May 22, 2026 at 6:55 PM.