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The NWS Portland OR issued a flood watch at 11:11 a.m. on Monday valid from Thursday 4 a.m. until Saturday 4 a.m. The watch is for South Washington Coast, Willapa and Wahkiakum Lowlands, Willapa Hills, Cowlitz County Lowlands, North Clark County Lowlands, Inner Vancouver Metro, East Clark County Lowlands, South Washington Cascade Foothills, West Columbia River Gorge – SR 14, Central Columbia River Gorge – SR 14 and South Washington Cascades.
The NWS states, “Flooding caused by excessive rainfall is possible.”
“Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Area creeks and streams are running high and could flood with more heavy rain. Landslides and debris flows are possible during this flood event. People, structures, and roads located below steep slopes, in canyons, and near the mouths of canyons may be at serious risk from rapidly moving landslides,” states the NWS. “You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.”
This watch is in effect until Saturday at 4 a.m.
Recommendations from the NWS for staying safe during a flood
If you live in a flood-prone area or are camping in a low-lying area, get to higher ground immediately. If told to evacuate, do so immediately. Lock your home when you leave. If you have time, disconnect utilities and appliances. Don’t go into a basement, or any room, if water covers the electrical outlets or if cords are submerged. If you see sparks or hear buzzing, crackling, snapping, or popping noises, get out. Stay out of water that may have electricity in it. Don’t walk through flood waters. It only takes 6 inches of moving water to knock you off your feet. If you are trapped by moving water, move to the highest possible point and call 911 if possible.
During periods of intense rainfall, the risk of flooding increases, particularly in low-lying and flood-prone areas. It is imperative to avoid driving through any water on the road, even if it seems shallow. According to the NWS, most cars can be swept away by just 12 inches of rushing water.
What to do in the rain on the road?
- Switch on headlights – Even during daylight hours, using headlights can enhance visibility and signal your presence to other drivers.
- While on the road – Opt for the middle lanes and remain on higher ground. Rainwater tends to gather along the road edges.
- Keep clear of puddles – Driving through puddles or low rainwater areas can cause vehicles to hydroplane or skid out of control
- Give ample space to large vehicles – Trucks or buses can create a water spray that diminishes visibility.
- Avoid flooded areas – When encountering a flooded road, do a U-turn and head back. The strong currents from flash floods can pull drivers off roadways. Driving through deep water can also negatively affect a vehicle’s mechanical and electrical systems.
What is hydroplaning?
Hydroplaning happens when a vehicle starts sliding 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:
- 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.
- 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.
- 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 Washington
This story was originally published December 15, 2025 at 11:18 AM.
